CN1088139C - Key and lock cylinder and method for manufacturing the key - Google Patents

Abstract

The invention relates to a key and a lock core. The key is a groove with concave-convex key teeth at the bottom of the groove, which is formed by combining a key body and a sleeve rod. The outer peripheral surface of the loop bar is provided with a plurality of concave parts with different depths; the lock core mainly comprises a lock body, an inner lock core, a bolt and a sleeve. The lock body and the inner lock core are provided with pin holes corresponding to the key teeth and the concave parts, and the pin holes are respectively provided with an inner lock pin and an outer lock pin. A front anti-theft mechanism comprising a front anti-drilling steel sheet and an anti-drilling steel sleeve is arranged at the lock body and the inner lock cylinder at the key insertion end; the rear section of the inner lock cylinder is provided with a rear anti-theft mechanism comprising an anti-impact steel bar, a rear anti-drilling steel sheet and a positioning pin. The lock core and the key have high anti-theft performance, are not easy to be damaged by electric drills or foreign matters, and are not easy to be copied.

Description

Key and lock cylinder and method for manufacturing the key

The invention relates to a key and a lock core, especially a key and a lock core with a high anti-theft effect.

The invention also relates to a method of manufacturing the key.

There are two types of common keys that are inserted into the lockhole: flat and round. The flat key forms concave-convex teeth on one or both sides, and the round key forms several conical recesses on its outer peripheral surface. Concave-convex teeth or the conical recess, the key can push the strips or lock pins inside the lock core, so that the strips or the lock core are in an open state to achieve the purpose of unlocking. However, traditional flat keys and round keys are commonly used, and general lock shops have copying machines, so they are easily copied by a large number of people and lose the anti-theft effect. Moreover, generally flat keys with concave-convex teeth on one side and most round keys have the disadvantage of being difficult to open because they have directionality and must be aligned with the lock hole to unlock. The Chinese Utility Model Patent (Patent No. ZL 93 2 10622.6) owned by the applicant of the present invention discloses a "key and lock core". The spoon body is combined to form a concave guide groove to achieve the purpose of not being easy to copy and having no direction. However, since the key only has a concave guide groove, it is easy to be opened by people using a special tool (such as hook or iron wire). In addition, the end of the lock core where the key is inserted is easy to be directly drilled through the keyhole with an electric drill (or directly inserted into the keyhole with a foreign object and turned hard), destroying the internal lock pin and opening; or, it is easy to be opened with a punch Insert from the keyhole, impact the end of the lock core (or directly destroy the end of the lock core with an electric drill), separate the lock tongue from the lock core, and then rotate the lock tongue to open, thus reducing its anti-theft performance.

The object of the present invention is to provide a key and a lock cylinder, which have high anti-theft characteristics, are not easy to be opened by a key other than the lock cylinder, and are difficult to be damaged by electric drills or foreign objects.

Another object of the present invention is to provide a key and a lock cylinder, the key is not easy to copy and has no directionality.

In order to achieve the above object, the present invention provides a key and a lock cylinder, the key includes a key body and a shaft, the key body is composed of a tooth part with a key tooth and a handle part formed at the root of the tooth part, The sleeve rod is a round rod with a notch formed longitudinally. The notch on the sleeve rod is combined with the key tooth part of the key body to form a groove with concave and convex key teeth at the bottom of the groove, so as to prevent the key from being easily broken.

Copy in general lock shop. At the same time, in order to improve the anti-theft performance of the key, a plurality of recesses of different depths are provided on the outer peripheral surface of the sleeve rod to increase the difficulty of opening the lock core used in conjunction with the key. The recesses can form a row on both sides of the groove respectively, or be in any random arrangement.

The lock core includes a lock body, an inner lock core, a rear anti-theft mechanism, a dead bolt, a sleeve and a front anti-theft mechanism. Among them, the lock body is provided with a lock core hole that runs through longitudinally, several pin holes vertically penetrating with the lock core hole, and a step difference formed at the front end of the outer periphery of the lock body; the inner lock core is provided with a keyhole, and several Vertically through the stepped pin hole, the inner lock core set is inserted into the lock core hole of the lock body, wherein the stepped pin hole communicates with the pin hole of the lock body, and is sequentially loaded into the inner lock pin, outer lock pin and A spring, the inner lock pin has a flange in the radial direction, and the flange is positioned in the stepped pin hole, and one end protrudes from the inner wall of the key hole, and the inner lock pin includes the corresponding concave and convex teeth. Corresponding main inner locking pins and auxiliary inner locking pins corresponding to the recesses with different depths. The sleeve sleeve is placed on the outer periphery of the lock body, and the inner lock pin, the outer lock pin and the spring are limited in the connected stepped pin hole and pin hole, and an annular groove is formed with the step difference around the lock body. In this way, the key can be inserted into the keyhole, and the inner lock pin can be pushed to link with the outer lock pin to form an open state.

The front anti-theft mechanism includes an anti-drilling sleeve with a longitudinal flange, which is inserted into the annular groove with the flange, and a front anti-drilling steel sheet installed between the front end face of the lock body and the inner lock core and the anti-drilling sleeve. Both the drill steel sheet and the anti-drill sleeve have openings communicating with the keyhole. In this way, a thief can be prevented from drilling through the keyhole with an electric drill, destroying the inner and outer lock pins and opening the access control. The rear anti-theft mechanism includes an anti-impact steel rod installed on the rear section of the inner lock core and a rear anti-drilling steel sheet fixed on the end surface of the rear section by a lock core screw cap screwed on the rear section. The end surface of the lock core screw cover has an opening, and the end surface of the rear section is formed with a transverse groove and a longitudinal blind hole. The blind hole can be loaded with springs and positioning pins in sequence. The slots and notches corresponding to the holes. One end of the positioning pin protrudes in the notch to limit the rotation of the lock bolt relative to the inner lock core. There are flanges on both sides of the tail end of the deadbolt, and the tail end is packed into the transverse groove, and its front end passes through the slot hole of the anti-drilling sheet and the opening of the lock core screw cover and is vertically fixed. In this way, it is possible to prevent a thief from inserting a punch into the keyhole, impacting the end of the lock core (or directly destroying the end of the lock core with an electric drill), separating the lock tongue from the lock core, and then turning the lock tongue to open the access control.

Graphic description:

Fig. 1 is a perspective view of a key and a lock core of the present invention.

Figure 2 is an exploded view of the key of the present invention, showing the key body, shaft and ring.

Fig. 3 is a three-dimensional exploded view of the key and the lock core of the present invention, wherein the lock body and the inner lock core are partially sectioned to show the pin hole perpendicular to the key hole of the lock body and the key hole of the inner lock core .

Fig. 4 is a longitudinal sectional view of the lock core of the present invention.

Fig. 5 is a longitudinal sectional view of the lock core in Fig. 4 inserted into the key, pushing the main inner lock pin to open state.

Fig. 6 is a longitudinal sectional view of the lock core of the present invention perpendicular to the direction of the longitudinal sectional view in Fig. 4 .

Fig. 7 is a longitudinal sectional view of the lock core in Fig. 6 inserted into the key and pushing the inner lock pin of the pair to open.

Figure 8 is a plan view of various primary inner latches of the present invention.

Fig. 9 is a plan view of various secondary internal lock pins of the present invention.

Figure 10 is a plan view of various outer locking pins of the present invention.

Embodiments of the key and the lock core of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1 , the key and lock core of the present invention include: a key 1 and a lock core 4 . As shown in Figures 1 and 2, the key 1 includes a key body 10 and a shaft 20. The key body 10 is composed of a key tooth portion 12 provided with concave and convex key teeth 120 and a handle portion 14 formed at the root of the key tooth portion. The sleeve rod 20 is a round rod with a conical shape at one end and a notch 22 formed longitudinally at the other end. Wherein the sleeve rod 20 cooperates with the concave point 16 at the root of the spoon tooth 12 with the convex point 26 formed at the front end of the notch 22, and then the collar 3 is pressed against the root of the spoon tooth 12 of the spoon body 10 to combine with the spoon body 10. In addition, a plurality of recesses 24 with different depths are provided on the outer peripheral surface of the sleeve rod 20 . The recesses 24 are conical and have gentle bottoms. Wherein, the concave-convex spoon tooth 120 concave tooth shape and the number and interval of the concave portion 24 can be increased, decreased and changed according to the needs. The recesses 24 respectively form a row on both sides of the notch 22 .

The manufacture of the key 1 can first form the key body 10 and the sleeve shaft 20, and then use the general flat key tooth-shaped copy machine or the processing locomotive of automatic equipment to mill out the concave and convex key tooth 120 of the key body 10, and use the processing of the automatic equipment The locomotive mills out the gap 22 of the sleeve rod 20, then assembles it, and uses the collar 3 to tighten it, and finally drills and mills the conical concave portion 24 with a copy machine or a processing machine of automatic equipment that generally manufactures the concave portion of the round key . As shown in FIG. 3 , the lock core 4 includes a lock body 40 , an inner lock core 42 , a front anti-theft mechanism 46 , a rear anti-theft mechanism 48 , a lock tongue 52 and a casing 54 . The lock body 40 is a hollow cylinder with a longitudinally penetrating lock core hole 400 , several pin holes 402 , 404 vertically penetrating through the lock core hole 400 , and a step difference 412 formed around the front end of the lock body 40 . The front end of the lock core hole 400 is provided with a two-stage step 406 , wherein the number and spacing of the pin holes 402 correspond to the concave tooth shape of the groove 2 , and the number and spacing of the pin holes 404 correspond to the recess 24 . The central portion of the inner lock core 42 is provided with a keyhole 420 and several stepped pinholes 422 , 424 vertically penetrating the keyhole. The inner lock core 42 is inserted into the lock core hole 400 of the lock body 40, and the flange 428 formed at its front end is matched with the small diameter section of the two-stage step difference 406 for positioning, wherein the stepped pin holes 422, 424 are respectively connected with the lock The pin holes 402, 404 of the body 40 are connected, and the inner lock pins 430, 432 (the main inner lock pin 430, the auxiliary inner lock pin 432), the outer lock pin 408 and the spring 410 are loaded in order, and then the casing 54 is used On the periphery of the lock body 40, the inner lock pins 430, 432, the outer lock pins 408 and the spring 410 are limited in the connected stepped pin holes 422, 424 and the pin holes 402, and the front end of the outer periphery of the lock body 40. The step difference 412 forms an annular groove (not shown). As shown in FIG. 4 or FIG. 5 , in order to prevent the sleeve 54 from loosening, a concave hole 416 can be provided around the outer periphery of the lock body 40 , and the sleeve 54 is punched to form a concave portion 542 at a position corresponding to the concave hole 416 .

Front anti-theft mechanism 46 comprises front anti-drilling steel sheet 460 and anti-drilling sleeve 464, and front anti-drilling steel sheet 460 is the circular plate with circular hole 462, and is installed in the large-diameter section place of this lock body two-stage step difference 406, as Figure 4 or Figure 5. The anti-drilling sleeve 464 is a cover-shaped body with a round hole 466 in the center and a longitudinal collar 468 near the edge, as shown in FIG. The formed annular groove is shown in Fig. 4, 5 or Fig. 6, 7. Among them, the round hole 462 and the round hole 466 are both connected to the keyhole 420, so that the key 1 can be inserted from the side of the anti-drill sleeve 464, and the inner lock pins 430, 432 are pushed to form an open state where the inner lock core 42 can rotate relative to the lock body 40. , and then by the rotation of the key 1, the lock tongue 52 with the folding groove 522 is interlocked, so that the mechanism connected to the lock tongue 52 drives the lock bolt mechanism (not shown) to unlock. Moreover, the front anti-drilling steel sheet 460 and the anti-drilling sleeve 464 are all made of high-hardness steel, so that the lock core 4 can prevent thieves from destroying with an electric drill. The inner lock pins 430, 432 can be T-shaped or middle-shaped lock pins with flanges 431 in the radial direction, as shown in Figures 8 and 9, or any suitable shape, and the flanges 431 are positioned in the stepped pin holes 422 . To match the concave tooth shape of the key tooth 120 ; one end of the auxiliary inner locking pin 432 protruding from the inner wall of the key hole 420 is formed into a conical shape to match the concave portion 24 . The other ends of the inner locking pins 430, 432 and the two ends of the outer locking pin 408 form smooth arc surfaces.

In this way, when the key 1 is inserted into the key hole 420, the concave tooth shape of the key tooth 120 and the concave portion 24 can push the inner lock pins 430, 432 through the outer lock pin 408 to compress the spring 410, so that the inner lock pins 430, 432 can move to different degrees. Displacement, and introduce the key teeth 120 and the concave portion 24 to form an open state where the inner lock core 42 can rotate relative to the lock body 40, as shown in FIGS. 5 and 7 . After the key 1 is pulled out, the locked state is restored by the restoring force of the spring 410 . Moreover, because the inner lock pins 430, 432 are designed to be fully retreated into the inner lock core 42, the key 1 of the present invention has no directionality, and can be inserted at any angle and transferred to the inner lock pins 430, 432 to fit into the recesses of the key teeth 120. Into the tooth shape and recess 24, so that the lock core 4 can be opened.

The outer lock pin 408 is mainly I-shaped as shown in Figure 10A, but in order to make the inner lock pins 430, 432 all retreat into the inner lock core 42, when the inner lock pins 430, 432 are too long, as shown in Figure 8 The inner lock pin G must cooperate with the cup-shaped outer lock pin B shown in FIG. 10 to provide a stroke for the inner lock pin to fully retreat into the inner lock core 42, as shown in 430G and 408B in FIG. 5 . In addition, in order to prevent thieves from inserting foreign objects into the keyhole and twisting it forcefully to break the I-shaped outer lock pin from the narrower part in the middle, the inner lock core 42 is forced to rotate relative to the lock body 40. Part of the outer lock pin can be made of high-hardness steel. The fabricated columnar body, as shown in 408C of FIGS. 6 and 7 and FIG. 10C , is used to strengthen the anti-shearing force of the outer locking pin 408 .

As shown in FIG. 3 , the rear section of the inner lock core 42 has a thread 434 formed around it, a pin hole 436 penetrating transversely, a transverse groove 438 and a longitudinal blind hole 440 formed on the end surface of the rear section.

The rear anti-theft mechanism 48 is composed of an anti-impact steel rod 482 that penetrates the pin hole 436 transversely, and a lock core screw cover 484 that is screwed on the rear section, a rear anti-drilling steel sheet 490 that is fixed on the end surface of the rear section, and sequentially The spring 496 and the positioning pin 498 that are loaded into the blind hole 440 are composed. The locking screw cover 484 has a thread 486 formed on the inner peripheral wall and a flower-shaped opening 488 formed on the end surface. The flower-shaped opening 488 is formed by connecting several small arcs. The rear anti-drilling steel sheet 490 has a slot 492 and a notch 494 corresponding to the transverse slot 438 and the blind hole 440 .

The dead bolt 52 is a steel plate body with folding grooves 522 on both sides and flanges 524 on both sides of the tail end, as shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, 7. Dead bolt 52 is packed into transverse groove 438 with the tail end, and its front end passes through the slotted hole 492 of rear anti-drilling steel sheet 490 and the mode of flower-shaped perforation 488 of lock core screw cover 484 and vertically fixes. Wherein, the lock core screw cover 484 is screwed on the rear section of the inner lock core 42 by the thread 486 matching the thread 434 of the rear section of the inner lock core 42 . And the rear anti-drilling steel sheet 490 is fixed on the rear section end face of the inner lock core 42, and the rear anti-drilling steel sheet 490 pushes against the flange 524 of the dead bolt 52 tail end, so that the dead bolt 52 is fixed on the rear end. Moreover, the small-diameter section 499 at one end of the positioning pin 498 just protrudes from the gap 494 of the rear anti-drilling steel sheet 490 , so that the dead bolt 52 cannot rotate relative to the inner lock core 42 .

Therefore, because the anti-shock steel rod 482 and the lock core screw cover 484 are screwed on the rear section of the inner lock core 42 to fix the design of the rear anti-drilling steel sheet 490, and the impact-resistant steel rod 482, the lock core screw cover 484 And the back anti-drilling steel sheet 490 is all made of high-hardness steel, so it can prevent a thief from stretching in from the keyhole 420 with a punch, impacting the rear section of the lock core 4, so that the dead bolt 52 is separated from the inner lock core 42; The electric drill is drilled into by the keyhole 420, destroys the rear section of the entire lock core, etc., and then rotates the dead bolt 52 to open the access control method.

In addition, as shown in Figures 4 and 5, the lock body 40 is also provided with a marble hole 414 vertically connected to the lock core hole 400, and the inner lock core 42 is provided with a positioning hole corresponding to the pinball hole 414 but with a slightly smaller diameter. Hole 442, the pinball hole 414 is equipped with a pinball 562 and a spring 564, used for when the key 1 is inserted into the key hole 420 and the inner lock core 42 can rotate relative to the lock body 40 when the open state is formed, the pinball 562 falls into position Hole 442 emits crisp sound and slight vibration, as identification of clamping return.

The combination of the spoon body 10 and the cover rod 20 can also be done in ways such as spot welding, welding and riveting.

Therefore, compared with prior art, the beneficial effects of the present invention can be summarized as follows:

(1) The key 1 of the present invention has a combination of the key body 10 and the sleeve rod 20 to form a groove 2 with concave and convex teeth 120 at the bottom of the groove, and a recess 24 on the outer peripheral surface of the sleeve rod 20 with different depths, so it is not easy to hook a needle. Or special tools such as iron wire to open. And the inner locking pins 430, 432 corresponding to the recessed tooth shape of the key tooth 120 and the concave portion 24 of the lock core 4, if seven different forms and lengths of the steel main inner locking pins 430 shown in Fig. 8; Fig. 9 The shown four different forms, lengths and lower ends form a taper, such as the secondary inner lock pin 430 that cannot be exerted if stolen or dug with technology; and a row of five main inner lock pins 430 as shown in Figure 3 And two rows of five auxiliary inner lock pins 432 as an example, the number of inner lock pin combinations that can be matched is 45×75×45=17,623,416,832 kinds, so it is very difficult to assemble, so it has a high degree of anti-theft feature.

(2) In addition, the lock core 4 of the present invention is equipped with a front anti-theft mechanism 46 and a rear anti-theft mechanism 48, and the front anti-drilling steel sheet 460 and the anti-drilling sleeve 464 forming the front anti-theft mechanism 46 are made of high hardness steel. Lock pin 430,432, and anti-impact steel rod 482, lock core screw cover 484 and rear anti-drilling steel sheet 490 that constitute rear anti-theft mechanism 48 are therefore not easy to be damaged by foreign objects such as punches or electric drills.

(3) The key 1 of the present invention has a combination of the key body 10 and the shaft 20 to form a groove 2 with concave and convex teeth 120 at the groove bottom, so it is not easy to copy. Moreover, the inner locking pins 430, 432 of the lock core 4 of the present invention are all designed to be fully retreated into the inner lock core 42, so the key 1 of the present invention has no directionality.

The above is an illustration of the preferred embodiment of the present invention, but it should be noted that the embodiment of the present invention is not limited by the embodiment.

Claims (24)

1. The present invention relates to a key, characterized in that it comprises: a spoon body consisting of a tooth portion provided with teeth and a handle formed at the root of the tooth portion; and The cover rod is a round rod with a notch formed longitudinally, and the notch of the cover rod is combined with the spoon teeth of the spoon body to form a groove with concave and convex spoon teeth at the bottom of the groove. 2. The key according to claim 1, characterized in that the sleeve rod is combined with the key body by pressing against the root of the tooth portion of the key body with a ring. 3. The key according to claim 2, characterized in that the outer peripheral surface of the sleeve rod is provided with a plurality of recesses of different depths. 4. The key according to claim 1, characterized in that said recess is conical with a flat bottom. 5. A lock core paired with the key according to claim 1, characterized by comprising: a lock body with a keyhole extending longitudinally; and a plurality of pin holes vertically penetrating the lock core hole; An inner lock core, which is sleeved into the lock core hole of the lock body, has a spoon hole; A number of stepped lock holes vertically penetrating the keyhole communicate with the pin holes of the lock body; A plurality of inner lock pins protrude from the inner wall of the key hole with one end, and are positioned in the stepped pin hole through radially provided flanges; A plurality of outer locking pins are respectively pressed against the inner locking pins by springs; A sleeve, sleeved on the periphery of the lock body, used to limit the inner lock pin, outer lock pin and spring to the connected stepped pin hole and the pin hole of the lock body; A dead bolt is packed into the transverse groove of the rear section of the inner lock core with the tail end. 6. The lock core according to claim 5, characterized in that, the lock body and the inner lock core are respectively provided with several auxiliary pin holes and stepped auxiliary pin holes communicating with each other, for setting several The auxiliary inner lock pin is corresponding to the concave part deeply sunken around the outside of the cover rod. 7. The lock core according to claim 5, characterized in that, there is a difference formed at the front end of the outer periphery of the lock body, which is combined with the sleeve to form an annular groove. 8. The lock core according to claim 7, characterized in that, the lock core is also provided with a front anti-theft mechanism, comprising An anti-drilling sleeve with a round hole in the center, including a longitudinal collar disposed adjacent the edge for cooperating with said annular groove; and A front anti-drilling steel sheet has a central hole, which is installed between the lock body and the front end of the inner lock core and the anti-drilling sleeve, and communicates with the round hole and the keyhole of the anti-drilling sleeve. 9. The lock core according to claim 5, characterized in that, the lock core is also provided with a rear anti-theft mechanism, comprising A steel rod is installed in the rear section of the inner lock core for shock resistance; A lock screw cap screwed on the rear section has an opening on the end surface; a transverse groove and a horizontal groove are formed on the end surface of the rear section A longitudinal blind hole is formed in the rear section of the inner lock core for sequentially arranging a spring and a positioning pin for locking the lock tongue; A rear anti-drilling steel sheet fixed on the end face of the rear section has a slot and a notch corresponding to the transverse groove and the blind hole, and one end of the positioning pin protrudes from the notch. 10. The lock cylinder according to claim 9, characterized in that there are flanges on both sides of the rear end of the lock tongue, and the rear anti-drilling steel sheet is against the flanges. 11. The lock cylinder according to claim 5, characterized in that the outer lock pin is in the shape of an I-shape. 12. The lock cylinder of claim 5, wherein the outer pin is cup-shaped. 13. The lock cylinder according to claim 5, wherein the outer locking pin is cylindrical. 14. The lock cylinder according to claim 5, wherein the main inner lock pin is T-shaped. 15. The lock cylinder according to claim 5, characterized in that the main inner lock pin is in the shape of a Chinese character. 16. The lock cylinder according to claim 5, characterized in that the secondary inner lock pin is T-shaped. 17. The lock cylinder according to claim 5, characterized in that the lock pin in the auxiliary is in the shape of a Chinese character. 18. The lock cylinder according to claim 11, characterized in that the two ends of the I-shaped outer lock pin form a smooth arc surface. 19. The lock cylinder according to claim 12, characterized in that the bottom of the cup-shaped outer lock pin forms a smooth arc surface. 20. The lock cylinder according to claim 13, characterized in that the two ends of the cylindrical outer lock pin form a smooth arc surface. 21. The lock cylinder according to claim 5, characterized in that the two ends of the main inner lock pin form a smooth arc surface. 22. The lock core according to claim 6, characterized in that one end of the auxiliary internal lock pin extending into the keyhole forms a conical arc end, and the other end forms a smooth arc surface. 23. A method of manufacturing a key as claimed in claim 1, comprising the steps of: forming a spoon body, and forming high and low teeth on the spoon tooth part of the spoon body; Form a round rod-shaped sleeve rod, and form a gap in the longitudinal direction of the sleeve rod; The sleeve rod is combined with the spoon tooth part of the spoon body through the gap to form a groove with concave and convex spoon teeth at the bottom of the groove. 24. The method according to claim 23, characterized in that a plurality of recesses of different depths are formed on the outer peripheral surface of the sleeve rod.

Images