CN205277064U - Avoid violence to rotate lock core that damages - Google Patents

Abstract

The utility model provides a lock cylinder that avoids damage caused by violent rotation, which includes a plurality of equal-diameter cylindrical blades, the plurality of blades are stacked in sequence, and a blade groove is opened on the outer periphery of each blade, and the blade groove is parallel to the axis of the blade. There is a key hole in the center of the blade, key teeth are arranged in the key hole, a lock tongue is arranged on the periphery of the blade, a lock body is arranged on the outer periphery of the lock tongue, a pin slot is arranged in the lock body, and a pin hole is arranged on the lock tongue, behind the lock tongue A plectrum is arranged at the end, a pin is arranged in the pin groove and the pin hole, a spring is arranged between the pin and the pin groove, and a V-shaped bar matching the blade groove is arranged on the end of the pin near the blade. When the utility model inserts an illegal key, if the blade groove on the blade does not form a straight long groove, the pin will be stuck in the pin groove and pin hole between the deadbolt and the lock body, and the deadbolt It will not rotate, but the blades are circular and can be rotated at will, that is, they can run idly and the lock will not be opened.

Description

A lock cylinder avoiding violent rotation damage

technical field

The utility model relates to the field of lock cylinder structure, in particular to a lock cylinder which avoids violent rotation damage.

Background technique

The leaf lock is a kind of lock. The principle of the leaf lock is to use the teeth with different angles on the key to rotate and align the blades with different angles in the lock cylinder, so as to realize the rotation and opening of the lock cylinder. When the existing blade lock cylinder is in a normal state, the inner peripheral fixing part and the inner core body keep cooperating, and the core body will not rotate idly, and the core body can be twisted and unlocked by inserting a correct key. Such a blade lock cylinder is easy to be inserted into the keyhole by a violent unlocking tool to forcibly twist the core body and then drive the deadbolt to unlock. Not only the anti-theft performance is poor, but also the core body will be damaged.

Contents of the invention

The technical problem to be solved by the utility model is to provide a lock cylinder that avoids violent rotation and damage, and solves the problem that the lock cylinder will be damaged when twisted forcibly.

The utility model is achieved in the following way: a lock cylinder that avoids violent rotation damage, including a plurality of equal-diameter cylindrical blades, the plurality of blades are stacked in sequence, and a blade groove is opened on the outer periphery of each blade, and the blade groove is connected with the blade The axis of the blade is parallel, the center of the blade is provided with a key hole, the key hole is provided with a key tooth, the outer periphery of the blade is provided with a lock tongue, the outer periphery of the lock tongue is provided with a lock body, the lock body is provided with a pin slot, and the lock tongue is provided with a pin hole , the rear end of the lock tongue is provided with a pick, the pin slot and the pin hole are provided with a pin, a spring is provided between the pin and the pin slot, and the end of the pin close to the blade is provided with a blade that matches the blade groove. V-bar.

Further, the number of blade grooves on the outer periphery of each blade is two, and two key teeth are arranged in the key hole, and the two blade grooves and the two key teeth are symmetrical with respect to the center of the blade.

Further, the front end and the rear end of the plurality of blades are respectively provided with limiting protrusions inside the lock tongue.

Further, the keyhole is a cylindrical keyhole.

Further, the front and rear ends of the lock body protrude from the lock tongue, and the inner diameters of the front and rear ends of the lock body are smaller than the inner diameter of the lock tongue.

Further, a limiting member is provided between adjacent blades to limit the rotation angle between the blades.

Further, one of the adjacent blades is provided with a limiting slot, and the other blade is provided with a limiting block, and the limiting block is placed in the limiting slot.

Further, a spring is arranged between the limiting groove and the limiting block.

Further, a locking member is provided between the lock tongue and the lock body.

The utility model has the following advantages: when an illegal key is inserted, the blade groove on the blade does not form a straight long groove, and the pin will be stuck in the pin groove and pin hole between the deadbolt and the lock body , then dead bolt can not rotate, and blade is circular and can rotate freely, like this, promptly inserts illegal key, and blade can rotate freely and dead bolt does not move, promptly can idling and lock can not be opened. When the legal key is inserted, the blade groove will form a straight long groove, and the V-shaped strip of the pin will enter into the blade groove under the pressure of the spring, so that the pin will break away from the pin groove, and the deadbolt will turn, and the key will turn That is, the blade and the dead bolt can be driven to rotate to realize unlocking.

Description of drawings

Fig. 1 is the schematic diagram of the sectional three-dimensional structure of the utility model when no legal key is inserted;

Fig. 2 is the schematic diagram of the cross-sectional three-dimensional structure when the utility model is inserted into a legal key;

Fig. 3 is a schematic cross-sectional structure diagram of the utility model.

detailed description

In order to describe the technical content, structural features, achieved goals and effects of the present utility model in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

Please refer to Fig. 1 to Fig. 3, the utility model provides a kind of lock core that avoids violent rotation damage, including a plurality of equal-diameter cylindrical blades 1, the utility model does not limit the number of blades, the more blades can To achieve better anti-theft performance, in order to simplify the description, the embodiment of the utility model uses two blades for illustration, and the embodiment of multiple blades can add blades on the basis of this embodiment. A plurality of blades are stacked in sequence, and a blade groove 2 is opened on the outer periphery of each blade, and the blade groove is parallel to the axis of the blade, so that after a plurality of blades are stacked and rotated to a certain angle, the blade groove of each blade can form a Long straight blade grooves. A key hole 3 is arranged in the center of the blade, and a key tooth 30 is arranged in the key hole. The key tooth can be a cylindrical or conical protrusion, and this protrusion can be accommodated in the groove of the key. The periphery of the blade is provided with a deadbolt 4, the periphery of the deadbolt is provided with a lock body 5, the lock body is provided with a pin slot 6, the deadbolt is provided with a pin hole 7, and the rear end of the deadbolt is provided with a plectrum 8. Pick piece 8 is used to stir the latch etc. of locking door, after stirring, door can be opened. A pin 9 is arranged in the pin groove and the pin hole, a spring 90 is arranged between the pin and the pin groove, and a V-shaped bar 10 matching the blade groove is arranged on the end of the pin near the blade.

When the utility model is in use, when an illegal key is inserted, as shown in Figure 1, the blades do not rotate to a suitable position relative to each other, and the blade grooves on the blades do not form a straight long groove. At this time, the pin is pressed against the circumference of the blade, and the pin will be stuck in the pin groove and the pin hole between the deadbolt and the lock body, so the deadbolt will not rotate relative to the lock body, and multiple blades are formed. Cylindrical shape can be rotated at will, like this, promptly insert illegal key, key and blade can rotate at will and dead bolt does not move, promptly can lock core idling and lock can not be opened. After inserting the legal key, as shown in Figure 2, the blade groove will form a straight long groove, and the V-shaped strip of the pin will enter into the blade groove under the pressure of the spring, so that the pin will break away from the pin groove, and the lock will The tongue can rotate, and after turning the key, the key will drive the blade and the dead bolt to rotate, and the dead bolt will drive the plectrum to rotate to realize unlocking.

In order to allow the key to be more conveniently aligned with the keyhole when the key is inserted, and to allow the key teeth to easily enter the groove of the key, the number of blade grooves on the outer periphery of each blade is two, and the keyhole is provided with The two key teeth, the two blade grooves, and the two key teeth are all symmetrical with respect to the center of the blade, as shown in Figure 3 . In this way, both sides of the key can also be made into the same shape, and then when the key is inserted into the keyhole, the key tooth can slide into the groove of the key better, because the groove of the key is the largest of the key tooth. The angle of difference is 180 degrees in the case of two key teeth, and 360 degrees in the case of one key tooth, the smaller the angle of difference, the easier it is for the key teeth to slide into the groove of the key.

In order to prevent the blades from sliding back and forth inside the lock tongue, limiting protrusions 11 are respectively provided at the front end and the rear end of the plurality of blades inside the lock tongue. The limiting projections at the front end are arranged in front of all the blades, and the limiting projections at the rear end are arranged at the back of all the blades, so that all the blades can only rotate inside the deadbolt without moving back and forth.

In some embodiments, the key hole may be a square key hole or a semicircular key hole. In a preferred embodiment, the key hole is a cylindrical key hole, and a circular key hole is convenient for key insertion.

And in order to avoid violent damage to the dead bolt, the dead bolt of the present utility model is preferably placed inside the lock body. Specifically, as shown in Figure 3, the front and rear ends of the lock body protrude from the dead bolt and the inner diameter of the front and rear ends of the lock body is smaller than that of the dead bolt. the inside diameter of. That is, the lock body wraps the lock tongue, and the lock tongue cannot be touched outside, thereby avoiding damage to the lock tongue. Preferably, the inner diameter of the front end is slightly larger than the diameter of the key hole, so that only the key hole can be seen from the outside to the inside of the lock body, and the key can be inserted without touching most of the outer periphery of the blade and the dead bolt, so as to avoid possible Direct damage to the bolt and blade.

In order to prevent the blades from rotating at an excessively large angle, a limiting member is arranged between adjacent blades to limit the rotation angle between the blades. There are many ways to implement the limiter, as long as the rotation angle can be displayed. In this embodiment, as shown in Fig. 1-2, one of the adjacent blades is provided with a limiting groove 12, and the other blade is provided with a limiting block 13, and the limiting block is placed in the limiting groove. When the blades rotate with each other, the limit block will move in the limit slot. When it moves to one end of the limit slot, there is no way for the blades to continue to rotate. At this time, they can only rotate in reverse. After the other end of the limiting groove, there is no way for the blades to continue to rotate, thereby realizing the limitation of the angle between the blades. The angle of blade and blade deviation has a limit like this, avoids that deviation is too big and makes key be difficult to insert.

In order to make the space between the blades return to the initial state, a spring 14 is arranged between the limiting groove and the limiting block. That is, springs are arranged on both sides of the limit block, and when the key is inserted, the spring on one side will be squeezed, and after the key is pulled out, under the action of the spring, the blades will return to the initial state.

In order to make it easier for the key to be pulled out after the lock is unlocked, the utility model is provided with a locking part 15 between the deadbolt and the lock body. The retaining part is used to relatively block the dead bolt and the lock body, and when the force of rotation is small, the dead bolt and the lock body are relatively blocked. After the dead bolt is rotated firmly, the dead bolt and the lock body can rotate relatively. When the utility model is in use, after the unlocking is completed, the lock tongue and the lock body can be rotated to the clamping parts, so that the lock tongue and the lock body are stuck by the clamping parts, and then the key is drawn out, the blades rotate relatively, and the blade grooves will lock the pins. The V-shaped column of the blade is pushed out, so that the pin blade enters the groove of the pin blade, that is, the dead bolt and the lock body are locked together, and then the key can be pulled out. As an optional embodiment, the implementation of the limiter can be shown in Figure 3, that is, the lock tongue contains a spherical groove, the lock body has a cylindrical groove, and there are springs and balls in the cylindrical groove. When the lock When the groove of the tongue moves to the position of the cylindrical groove, the spring of the cylindrical groove will push the ball into the spherical groove, that is, the lock tongue and the lock body can be locked, and the lock tongue and the lock body can be locked only when the force is used. The lock body moves away from the clamping parts, that is, rotates with each other.

The above is only an embodiment of the utility model, and does not limit the scope of patent protection of the utility model. Any equivalent structure or equivalent process transformation made by using the utility model specification and accompanying drawings is directly or indirectly used in Other relevant technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (9)

1. A lock cylinder for avoiding violent rotation damage, characterized in that: it includes a plurality of equal-diameter cylindrical blades, the plurality of blades are stacked in sequence, and the outer circumference of each blade is provided with a blade groove, the blade groove and the axis of the blade Parallel, the center of the blade is provided with a key hole, the key hole is provided with a key tooth, the outer periphery of the blade is provided with a lock tongue, the outer periphery of the lock tongue is provided with a lock body, the lock body is provided with a pin groove, the lock tongue is provided with a pin hole, and the lock tongue is provided with a pin hole. There is a paddle at the rear end of the tongue, a pin is set in the pin slot and the pin hole, a spring is set between the pin and the pin slot, and a V-shaped pin that matches the blade groove is set at the end of the pin close to the blade. strip. 2. A lock cylinder for avoiding violent rotation damage according to claim 1, characterized in that: the number of blade grooves on the outer periphery of each blade is two, two key teeth are arranged in the keyhole, two blade grooves, Both key teeth are symmetrical about the center of the blade. 3 . The lock cylinder for avoiding violent rotation damage according to claim 1 , characterized in that: the front and rear ends of the plurality of blades are respectively provided with limiting protrusions inside the lock tongue. 4 . 4. The lock cylinder for avoiding violent rotation damage according to claim 1, characterized in that: the key hole is a cylindrical key hole. 5. A lock cylinder that avoids violent rotation damage according to claim 1, wherein the front and rear ends of the lock body protrude from the lock tongue, and the inner diameter of the front and rear ends of the lock body is smaller than the inner diameter of the lock tongue. 6 . The lock cylinder for avoiding violent rotation damage according to claim 1 , wherein a stopper is arranged between adjacent blades to limit the rotation angle between the blades. 7 . 7. A lock cylinder for avoiding violent rotation damage according to claim 6, characterized in that: one of the adjacent blades is provided with a limiting groove, the other blade is provided with a limiting block, and the limiting block is placed on the in the limit slot. 8 . The lock cylinder for avoiding violent rotation damage according to claim 7 , wherein a spring is arranged between the limiting groove and the limiting block. 9. The lock cylinder avoiding violent rotation damage according to claim 1, characterized in that: a retaining member is provided between the lock tongue and the lock body.