CN101265763B - Lock head and key with blade marble idle rotation lock core structure - Google Patents

Abstract

The invention discloses a lock with a blade marble idling lock core structure, which comprises a front lock core in a lock body, wherein a plurality of blade marbles are arranged on the front lock core along the axis, locking side columns which can be matched with V-shaped grooves on the blade marbles are arranged in locking side column grooves on the front lock core, step-shaped grooves are arranged on the locking side columns, clamping pieces and fixing parts which are matched with the step-shaped grooves on the locking side columns are arranged at the upper parts of the locking side column grooves, radial locking side column return springs are arranged between the fixing parts and the locking side columns, axial locking side column return springs are arranged between the locking side columns and end walls of the locking side column grooves, and protruding parts which can be matched with marble grooves on a key are arranged in the middle parts of one sides of the blade marbles. The key is provided with the bullet groove only on one side, and the thickness is thinner. The lock head has simple structure, few parts and easy processing, and can prevent a thicker tool from being inserted into a lock hole to violently unlock.

Description

Lock head and key with blade pin idling lock cylinder structure

technical field

The invention belongs to mechanical locks, and relates to a lock head and a key with a blade pin idling lock cylinder structure.

Background technique

Chinese Patent No. ZL200710035717.X discloses a lock head whose lock cylinder can rotate idly. This lock head includes a lock body and a lock cylinder in the lock body. The lock cylinder is divided into a front lock cylinder and a rear lock cylinder. The locking side column and the sliding block, the sliding block and the locking side column are respectively provided with a protrusion (groove) and a groove (protrusion) that can be matched, and a locking side column return spring is provided between the locking side column and the sliding block , a sliding block return spring is provided between the sliding block and the end wall of the locking side column groove; a lock pin chute is arranged on the rear lock cylinder corresponding to the locking side column groove of the front lock cylinder, and the lock pin chute is located on the rear lock cylinder There is an end wall at the tail of the lock pin chute, a lock pin is placed in the lock pin chute, and a lock pin return spring is arranged between the end wall in the lock pin chute and the lock pin; the elasticity of the lock pin return spring is greater than that of the sliding block return spring; the lock pin or At least one of the locking side column grooves uses a slope to contact the other; a step for stopping the rear lock cylinder is provided at the tail of the lock body, and a gap is opened on the step corresponding to the lock pin slide groove on the rear lock cylinder , the lock pin can cooperate with the notch, and the step is also provided with a limit notch that limits the rotation angle of the rear lock core, and the afterbody of the rear lock core is provided with a projection that matches the upper limit notch of the lock body afterbody. Because the front lock cylinder of the lock head can rotate idly, external force cannot act on the lock body or the rear lock cylinder through the front lock cylinder, which better solves the difficult problems of strong unlocking and destructive unlocking. It is very effective to prevent violent tools from picking and twisting the lock cylinder to unlock. However, in the manufacturing process, it is found that the lock still has some problems: the main reason is that the structure is relatively complicated, there are many parts, the processing is time-consuming, the processing accuracy is difficult to guarantee, and the cost is relatively high.

Among the existing locks, there is another kind of key that adopts the same tooth pattern on both sides. The thickness of this key is relatively large, so the keyhole on the lock head is relatively large, which provides criminals who can use size comparison. Thick and high-strength tools are inserted into the lock hole to achieve the opportunity of violent unlocking.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a lock head and key with a simpler structure and higher safety with a blade pin idling lock cylinder structure.

The lock head of the present invention includes a front lock cylinder in the lock body, on which several blade pins are arranged along the axis, and a V-shaped groove on the front lock core is provided with a V-shaped groove that can cooperate with the blade pins. The locking side column is provided with a step-shaped groove on the locking side column. The upper part of the locking side column groove is provided with a card and a fixing part that matches the stepped groove on the locking side column. There is a radial return spring for the locking side post, and an axial return spring for the locking side post is provided between the locking side post and the end wall of the locking side post groove, and the middle part of one side of the blade pin is provided with a pin slot that can be connected with the pin on the key matching protrusions.

The fixing part can be a blocking piece inlaid on the front lock cylinder, or a sleeve sleeved on the front lock cylinder.

The key matched with the lock cylinder of the present invention includes a key piece, a pin groove is arranged on one surface of the key piece, and tooth marks are arranged on two groove walls of the pin groove.

Compared with the prior art, the present invention cancels the sliding block and only retains the locking side column. By setting the step-shaped groove on the locking side column to cooperate with the card on the front lock cylinder, the control of the locking side column in the unlocked or locked state is achieved. The axial movement at the time realizes the clutch of the front and rear lock cylinders, so that the front lock cylinders can run idly. This structure makes the structure of the lock head simpler, reduces parts and is easier to process, which can further reduce the cost. And because the key adopted has only one side to be provided with pin groove, its thickness can be reduced, and the lock hole of lock end is reduced accordingly, can prevent to utilize the tool that size is thicker and strength is higher to insert lock hole violently to unlock again, make the lock Security is improved.

The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a view along the line A-A of Fig. 1 .

FIG. 3 is a partial top view of FIG. 1 .

Fig. 4 is a left side view of Fig. 1 .

FIG. 5 is a schematic diagram of different usage states of FIG. 1 .

Fig. 6 is a B-B arrow view of Fig. 5 .

FIG. 7 is a partial top view of FIG. 5 .

Fig. 8 is a schematic diagram of different fixing parts arranged on the upper part of the locking side post groove of the front lock cylinder.

Fig. 9 is a schematic diagram of the cooperation between the key and the blade pin of the present invention.

Detailed ways

See Fig. 1 to Fig. 4, lock end of the present invention, comprise lock body 2, the lock core in lock body 2, lock core is divided into front lock core 1 and rear lock core 14, and front lock core is provided with several along the axis by Two blade pins 15 are a group of vane pins. The locking side column groove on the front lock core 1 is provided with a locking side column 6 that can cooperate with the V-shaped groove 16 on the blade pins. There is a step-shaped groove 7, and the upper part of the locking side column groove is provided with a card 8 and a fixing part that cooperates with the step-like groove 7 on the locking side column. 3 and the locking side column 6 are provided with a locking side column radial return spring 5, and between the locking side column 6 and the end wall of the locking side column groove is provided with a locking side column axial return spring 4; Lock pin chute 13 is arranged correspondingly with locking edge column groove in front lock core 1, and lock pin chute 13 has an end wall 12 at the afterbody of rear lock core, and lock pin 9 is placed in lock pin chute 13, and lock pin slides Lock pin return spring 10 is arranged between the end wall 12 in the groove 13 and the lock pin 9; The elasticity of the lock pin return spring 10 is greater than the axial return spring 4 of the locking side column; The side column groove wall is in contact; the tail of the lock body 2 is provided with a step 20 for stopping the rear lock core 14, and a gap 11 is opened on the step 20 corresponding to the lock pin chute 13, and the lock pin 9 in the lock pin chute 13 Can cooperate with this breach 11, also be provided with the position-limiting breach 21 that limits rear lock core 14 rotation angles on this step 20, the afterbody of rear lock core 14 is provided with the protrusion that cooperates with lock body 2 tail end upper limit breaches 21. Block 22, the lower middle part of the blade pin 15 is provided with a protruding portion 18 that can cooperate with the pin groove on the key blade 23, and the front lock core 1 is provided with a blade pin return spring 17 (seeing figure 9).

Described fixed part, also can adopt the blocking piece 3 ' that is embedded on the front lock cylinder, as shown in Figure 8.

The matching key with the lock head of the present invention is shown in Fig. 9, and includes a key piece 23, on which one surface of the key piece 23 is provided with a pin groove 24, and two groove walls 25 of the pin pin groove 24 are provided with tooth marks.

The working principle of the lock head of the present invention: the locking state is shown in Fig. 5 and Fig. 6, and the card 8 is located in the lower step of the groove 7 on the locking side post 6. When unlocking, see Fig. 1, insert the key, the teeth on the pin groove wall 25 on the key blade 23 cooperate with the protruding part 18 on the blade pins, forcing the V-shaped grooves on each group of blade pins in the front lock cylinder 1 to align At the same time, the radial return spring 5 of the locking side column makes the locking side column 6 move radially inward, the card 8 is located in the upper step of the groove 7 on the locking side column 6, the locking side column 6 can move axially, and the front lock cylinder is rotated 1 Make the lock pin 9 in the rear lock core 12 align with the locking side column groove in the front lock core 1, because the elasticity of the lock pin return spring 10 is greater than that of the locking side column axial return spring 4, the lock pin 9 will lock the side column groove The inner locking side post 6 pushes forward and enters into the locking side post groove. At this moment, the front and rear lock cores 1 and 14 are connected into one body through the lock pin 9, and the front lock core 1 can not rotate idly relative to the rear lock core 14; The front lock cylinder 1 rotates an angle, as shown in Fig. 7, because the lock pin 9 uses the slope 19 to contact the groove wall of the locking side column (see Fig. 3), the groove wall of the locking side column forces the lock pin 9 to retract into the rear lock cylinder 14, locking The side column 6 is axially reset, and at this time the card 8 is aligned with the lower step of the groove 7 on the locking side column 6, and the key is pulled out, as shown in Figure 5 and Figure 6, the blade pins 15 are arranged in disorder, and the V-shaped groove on the blade pins 16 forces the locking side column 6 to move radially outward, and the card 8 enters the lower step of the upper groove 7 of the locking side column 6 to position the locking side column 6. At this time, the contact end surface between the locking side column 6 and the lock pin 9 is just right. Located at the interface between the front and rear lock cores 1, 14, the front lock core 1 can rotate relative to the rear lock core 14 to realize idling.

Claims (3)

1. A lock head with a blade pin idling lock core structure, including a front lock core in the lock body, a number of blade pins are arranged along the axis on the front lock core, and it is characterized in that the locking edge column groove on the front lock core is provided with The locking side column that can be matched with the V-shaped groove on the pin of the blade, the locking side column is provided with a stepped groove, and the upper part of the locking side column groove is provided with a card and fixed Components, the radial return spring of the locking side post is provided between the fixed part and the locking side post, and the axial return spring of the locking side post is provided between the locking side post and the end wall of the locking side post groove. The middle part of one side is provided with a protruding part which can cooperate with the pin groove on the key. 2. The lock head with blade pin idling lock cylinder structure according to claim 1, characterized in that said fixing part is a stopper inlaid on the front lock cylinder, or a sleeve sleeved on the front lock cylinder. 3. A key matched with the lock cylinder according to claim 1, comprising a key piece, characterized in that a marble groove is provided on one surface of the key piece, and tooth marks are provided on the two groove walls of the pinhole groove.

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