A single-hole double-bead lock core

Abstract

The present invention discloses a single-hole double-bead lock core, which relates to the technical field of lock cores. The present invention includes a lock shell and a group of lock cylinders. A keyhole is provided on the lock cylinder, and a plurality of inner ball holes are provided on the lock cylinder. An outer ball hole matching with the inner ball hole is provided on the lock shell. A ball mechanism is provided in the outer ball hole and the inner ball hole. A group of outer guide edges and a group of inner guide edges are respectively fixed on the inner walls opposite to the keyhole. By designing a novel double-bead ball mechanism and cooperating with kidney-shaped ball holes, the present invention realizes single-hole double beads, two bullet heads with offset positions are separated in a single hole and are respectively opposite to two inner guide edges. At the same time, a round-head ball mechanism is designed, the round-head ball is opposite to the center of the two inner guide edges, and the lengths of the inner balls of each double-bead ball mechanism are different. The key matching points are double rows and one point, which can greatly improve the anti-theft ability of the lock core.

Description

Technical Field

[0001] The present invention belongs to the technical field of lock cores, and particularly relates to a single-hole double-ball lock core. Background Art

[0002] In existing lock cores, bullet holes are provided on the lock cylinder and the lock shell, and a bullet mechanism is arranged in the bullet holes. Generally, a single bullet mechanism is arranged in each bullet hole. One way to increase the number of tooth profile matching points is a means to improve the anti-theft ability of the lock core. Since the length of the lock core needs to match the door panel and is within a certain range, the lengths of the lock shell and the lock cylinder are not suitable for change. Under the condition that the length range is constant, it is not conducive to the increase of tooth profile matching points. Therefore, multiple rows of tooth profiles can be designed to improve the anti-theft ability of the lock core.

[0003] For a lock core with multiple rows of tooth profiles, multiple rows of bullet mechanisms can be designed. By increasing the number of bullet mechanisms and the number of tooth profile matching points between the bullets and the key, the anti-theft ability can be improved. That is, the technical solution disclosed in the patent with the publication number FR2637644A1. However, this method is not conducive to the production and processing of the lock shell, the lock cylinder and the key, is not conducive to the installation of the bullet mechanism, requires high processing precision and high cost.

[0004] Therefore, designing a lock core with a single row of bullet holes and a high anti-theft effect is a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of the present invention is to provide a single-hole double-ball lock core. By designing a new double-ball bullet mechanism and cooperating with a kidney-shaped bullet hole, a single hole with two balls is realized. Two bullet heads with offset positions are separated in the single hole and respectively face two inner guide edges. At the same time, a round-head bullet mechanism is designed. The round-head bullet is centered relative to the center of the two inner guide edges, and the inner bullets of each double-ball bullet mechanism have different lengths. The matching points with the key are double-row and single-point, which can greatly improve the anti-theft ability of the lock core.

[0006] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0007] The present invention is a single-hole double-ball lock core, including a lock shell and a set of lock cylinders. The lock cylinder is provided with a key hole, and the lock cylinder is provided with a plurality of inner bullet holes. The lock shell is provided with outer bullet holes that cooperate with the inner bullet holes, and a bullet mechanism is arranged in the outer bullet holes and the inner bullet holes;

[0008] A set of outer guide edges and a set of inner guide edges are respectively fixed on the inner walls opposite to the key hole. A set of the inner guide edges and a set of the outer guide edges are staggered in position and centrosymmetric about the center point of the key hole. The inner bullet holes penetrate through the two inner guide edges and extend into the key hole;

[0009] A number of the inner ball holes and outer ball holes are each divided into a cylindrical hole and a number of waist-shaped holes. The ball mechanism in the cylindrical hole is a round-headed ball mechanism, and the ball mechanism in the waist-shaped hole is a double-ball mechanism.

[0010] The double-ball mechanism includes a first seal fixed in the outer ball hole, an outer ball sliding in the outer ball hole, and an inner ball sliding in the inner ball hole.

[0011] The outer ball includes two semi-outer balls that slide relative to each other and are semi-cylindrical in shape. A first spring is fixed between each of the two semi-outer balls and the first seal.

[0012] The inner ball includes two semi-inner balls that are semi-cylindrical in shape. A chute and a sliding edge are provided on the vertical surface of the semi-inner ball. A semi-warhead is fixed to one side of the bottom end of the semi-inner ball. The two semi-inner balls slide relative to each other through the sliding edge and the chute. The semi-warheads of the two semi-inner balls are in contact with each other and are respectively opposite to the positions of the two inner guide edges. The two semi-inner balls are magnetically connected to the two semi-outer balls respectively.

[0013] The lengths of the inner balls of a number of the double-ball mechanisms are different.

[0014] Further, the round-headed ball mechanism includes a round-headed ball, a flat-headed ball, and a second seal. The second seal is fixed in the cylindrical hole on the lock case. The round-headed ball is slidably disposed in the cylindrical hole on the lock case. A second spring is fixed between the round-headed ball and the second seal. The flat-headed ball is slidably disposed in the cylindrical hole on the lock core. The flat-headed ball is magnetically connected to the round-headed ball.

[0015] Further, it further includes a set of keys. The key includes a key body and a key handle. Symmetrically arranged key flower parts are provided on both the upper surface and the lower surface of the key body. The key flower part includes a set of positioning grooves. The positioning grooves are in clearance fit with the inner guide edge or the outer guide edge. A number of tooth grooves are provided on the positioning grooves. The tooth grooves cooperate with the semi-warheads. The positions of the a number of tooth grooves on the two positioning grooves are offset. An intermediate groove is provided between the two positioning grooves. The intermediate groove cooperates with the round-headed ball.

[0016] Further, the bottom end of the sliding edge extends to the bottom surface of the semi-warhead. The sliding edge and the bottom of the semi-warhead are provided with arc-shaped ends.

[0017] Further, the first spring includes an intermediate part and two end parts. An elastic part is provided between the intermediate part and the end parts. The pitch between the intermediate part and the end parts is a small pitch. The structural characteristics of the second spring are the same as those of the first spring.

[0018] Further, a slot is provided on the semi-outer ball. The bottom end of the first spring is fixed in the slot.

[0019] Further, a notch is provided at the middle position of the lock case, and a dial wheel is provided in the notch.

[0020] Further, transmission parts are provided inside the opposite end faces of the two lock cylinders. The transmission parts are connected to the dial wheel, and the two transmission parts are connected by rivets.

[0021] Further, a through hole is provided at the middle of the lock case, and the through hole is a threaded hole.

[0022] Further, a snap ring groove is provided on the outer side of one end of the lock cylinder close to the dial wheel, and a snap ring is provided between the snap ring groove and the lock case.

[0023] The present invention has the following beneficial effects:

[0024] 1. By designing a novel double-ball cylinder mechanism and cooperating with kidney-shaped cylinder holes, the present invention realizes single-hole double balls, divides two offset bullet heads in a single hole, and respectively faces two inner guide edges. At the same time, a round-head cylinder mechanism is designed, and the round-head cylinder is centered relative to the two inner guide edges, and the inner cylinders of each double-ball cylinder mechanism have different lengths. The key matching points are double rows and one point, which can greatly improve the anti-theft ability of the lock core.

[0025] 2. Through the design of the double-ball cylinder mechanism, the present invention can increase the number of cylinders in the same cylinder space, and improve the anti-theft ability of the lock core by increasing the number of cylinders.

[0026] 3. The key used in the present invention is double-sided and can be used on both sides. The positions cooperating with the cylinders are concave groove-shaped, and the key has no protruding tooth pattern, which can avoid damage to the key caused by bumping and other situations, thereby improving the service life of the key.

[0027] 4. The cylinder holes on the lock case and the lock cylinder of the present invention are single-row and have a simple structure, which is beneficial to production.

[0028] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0030] Figure 1 is a schematic structural diagram of a single-hole double-ball lock core of the present invention;

[0031] Figure 2 is a schematic structural diagram of the lock cylinder;

[0032] Figure 3 It is a structural schematic diagram of a double-ball pin tumbler mechanism;

[0033] Figure 4 It is a structural schematic diagram of a semi-inner pin tumbler;

[0034] Figure 5 It is a structural schematic diagram of a key;

[0035] Figure 6 It is a structural schematic diagram of a first spring;

[0036] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0037] 1 - lock housing, 2 - lock cylinder, 3 - round head pin tumbler mechanism, 4 - double-ball pin tumbler mechanism, 5 - key, 6 - dial, 7 - transmission part, 8 - snap ring, 101 - outer pin tumbler hole, 102 - notch, 103 - through hole, 201 - key hole, 202 - inner pin tumbler hole, 203 - outer guide edge, 204 - inner guide edge, 205 - cylindrical hole, 206 - kidney-shaped hole, 301 - round head pin tumbler, 302 - flat head pin tumbler, 303 - second seal, 304 - second spring, 401 - first seal, 402 - semi-outer pin tumbler, 403 - first spring, 404 - semi-inner pin tumbler, 405 - chute, 406 - sliding edge, 407 - semi-warhead, 408 - middle part, 409 - end head part, 410 - elastic part, 411 - slotted, 501 - key body, 502 - key handle, 503 - positioning groove, 504 - tooth groove, 505 - middle groove. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0039] Please refer to Figures 1-4 As shown, the present invention is a single-hole double-ball lock core, including a lock housing 1 and a set of lock cylinders 2. A key hole 201 is provided on the lock cylinder 2, and a number of inner pin tumbler holes 202 are provided on the lock cylinder 2. An outer pin tumbler hole 101 matching the inner pin tumbler hole 202 is provided on the lock housing 1, and a pin tumbler mechanism is provided in the outer pin tumbler hole 101 and the inner pin tumbler hole 202;

[0040] A set of outer guide edges 203 and a set of inner guide edges 204 are respectively fixed on the inner walls opposite to the key hole 201. The set of inner guide edges 204 and the set of outer guide edges 203 are staggered in position and centrosymmetric about the center point of the key hole 201. The inner pin tumbler hole 202 penetrates through the two inner guide edges 204 and extends into the key hole 201;

[0041] A number of inner ball holes 202 and outer ball holes 101 are each divided into a cylindrical hole 205 and a number of waist-shaped holes 206. The ball mechanism in the cylindrical hole 205 is a round-head ball mechanism 3, and the ball mechanism in the waist-shaped hole 206 is a double-ball mechanism 4;

[0042] The double-ball mechanism 4 includes a first sealing member 401 fixed in the outer ball hole 101, an outer ball sliding in the outer ball hole 101, and an inner ball sliding in the inner ball hole 202;

[0043] The outer ball includes two semi-outer balls 402 that slide relative to each other and are semi-cylindrical in shape. A first spring 403 is fixed between each of the two semi-outer balls 402 and the first sealing member 401;

[0044] The inner ball includes two semi-cylindrical semi-inner balls 404. A sliding groove 405 and a sliding edge 406 are provided on the vertical surface of the semi-inner ball 404. A semi-warhead 407 is fixed to one side of the bottom end of the semi-inner ball 404. The two semi-inner balls 404 slide relative to each other through the sliding edge 406 and the sliding groove 405. The semi-warheads 407 of the two semi-inner balls 404 are in contact with each other and are respectively opposite to the positions of the two inner guide edges 204. The two semi-inner balls 404 are magnetically connected to the two semi-outer balls 402 respectively;

[0045] The inner balls of a number of double-ball mechanisms 4 have different lengths, the outer balls have the same length, the first springs 403 have the same length, and the first sealing members 401 have the same length.

[0046] Among them, as Figure 1 shown, the round-head ball mechanism 3 includes a round-head ball 301, a flat-head ball 302, and a second sealing member 303. The second sealing member 303 is fixed in the cylindrical hole 205 on the lock case 1. The round-head ball 301 is slidably arranged in the cylindrical hole 205 on the lock case 1. A second spring 304 is fixed between the round-head ball 301 and the second sealing member 303. The flat-head ball 302 is slidably arranged in the cylindrical hole 205 on the lock core 2. The flat-head ball 302 is magnetically connected to the round-head ball 301.

[0047] Among them, as Figure 5 shown, it further includes a set of keys 5. The key 5 includes a key body 501 and a key handle 502. Symmetrically arranged key flower parts are provided on both the upper surface and the lower surface of the key body 501. The key flower part includes a set of positioning grooves 503. The positioning grooves 503 are in clearance fit with the inner guide edge 204 or the outer guide edge 203. A number of tooth grooves 504 are formed on the positioning grooves 503. The tooth grooves 504 cooperate with the semi-warheads 407. The positions of the a number of tooth grooves 504 on the two positioning grooves 503 are offset. An intermediate groove 505 is provided between the two positioning grooves 503. The intermediate groove 505 cooperates with the round-head ball 301.

[0048] Among them, as Figures 3-4As shown, the sliding edge 406 extends to the bottom surface of the semi-projectile 407. The sliding edge 406 and the bottom of the semi-projectile 407 are provided with arc-shaped head ends, and the design of the arc-shaped head ends facilitates the insertion and extraction of the key 5.

[0049] Among them, as Figure 6 shown, the first spring 403 includes an intermediate portion 408 and two end portions 409. An elastic portion 410 is provided between the intermediate portion 408 and the end portion 409. The pitch between the intermediate portion 408 and the end portion 409 is a small pitch. The structural characteristics of the second spring 304 are the same as those of the first spring 403.

[0050] Among them, as Figure 3 shown, the semi-external ball 402 is provided with a slot 411, and the bottom end of the first spring 403 is fixed in the slot 411.

[0051] Among them, as Figure 1 shown, a notch 102 is provided at the middle position of the lock shell 1, and a dial 6 is provided in the notch 102.

[0052] Among them, as Figure 1 shown, a transmission member 7 is provided inside the opposite end faces of the two lock cylinders 2. The transmission member 7 is connected to the dial 6, and the two transmission members 7 are connected by rivets.

[0053] Among them, as Figure 1 shown, a through hole 103 is provided in the middle of the lock shell 1, and the through hole 103 is a threaded hole.

[0054] Among them, as Figure 1 shown, a snap ring groove is provided on the outer side of one end of the lock cylinder 2 close to the dial 6, and a snap ring 8 is provided between the snap ring groove and the lock shell 1.

[0055] Among them, the length direction of the kidney-shaped hole 206 is parallel to the axis direction of the lock cylinder 2.

[0056] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0057] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A single-hole double-bead lock core, comprising a lock shell (1) and a set of lock cylinders (2). A keyhole (201) is provided on the lock cylinder (2), and a plurality of inner ball holes (202) are provided on the lock cylinder (2). An outer ball hole (101) matching with the inner ball hole (202) is provided on the lock shell (1). A ball mechanism is arranged in the outer ball hole (101) and the inner ball hole (202). It is characterized in that: A set of outer guide edges (203) and a set of inner guide edges (204) are respectively fixed on the inner walls opposite to the keyhole (201). A set of the inner guide edges (204) and a set of the outer guide edges (203) are staggered in position and centrosymmetric about the center point of the keyhole (201). The inner ball hole (202) penetrates through the two inner guide edges (204) and extends into the keyhole (201); A plurality of the inner ball holes (202) and the outer ball holes (101) are each divided into a cylindrical hole (205) and a plurality of kidney-shaped holes (206). The ball mechanism in the cylindrical hole (205) is a round-head ball mechanism (3), and the ball mechanism in the kidney-shaped hole (206) is a double-bead ball mechanism (4); The double-bead ball mechanism (4) includes a first seal (401) fixed in the outer ball hole (101), an outer ball sliding in the outer ball hole (101), and an inner ball sliding in the inner ball hole (202); The outer ball includes two semi-outer balls (402) that slide relative to each other and are semi-cylindrical in shape. A first spring (403) is fixed between each of the two semi-outer balls (402) and the first seal (401); The inner ball includes two semi-inner balls (404) that are semi-cylindrical in shape. A chute (405) and a sliding edge (406) are provided on the vertical surface of the semi-inner ball (404). A semi-warhead (407) is fixed on one side of the bottom end of the semi-inner ball (404). The two semi-inner balls (404) slide relative to each other through the sliding edge (406) and the chute (405). The semi-warheads (407) of the two semi-inner balls (404) are in contact with each other and are respectively opposite to the positions of the two inner guide edges (204). The two semi-inner balls (404) are magnetically connected to the two semi-outer balls (402) respectively; The lengths of the inner balls of a plurality of the double-bead ball mechanisms (4) are different; A slot (411) is provided on the semi-outer ball (402), and the bottom end of the first spring (403) is fixed in the slot (411); A notch (102) is provided in the middle of the lock shell (1), and a dial (6) is provided in the notch (102).

2. The single-hole double-bead lock core according to claim 1, characterized in that, The round-headed ball mechanism (3) includes a round-headed ball (301), a flat-headed ball (302), and a second seal (303). The second seal (303) is fixed in a cylindrical hole (205) on the lock housing (1). The round-headed ball (301) is slidably arranged in the cylindrical hole (205) on the lock housing (1). A second spring (304) is fixed between the round-headed ball (301) and the second seal (303). The flat-headed ball (302) is slidably arranged in the cylindrical hole (205) on the lock core (2), and the flat-headed ball (302) is magnetically connected to the round-headed ball (301).

3. The single-hole double-bead lock core according to claim 2, characterized in that, It further includes a set of keys (5). The key (5) includes a key body (501) and a key handle (502). Symmetrically arranged key flower parts are provided on both the upper surface and the lower surface of the key body (501). The key flower part includes a set of positioning grooves (503). The positioning grooves (503) are in clearance fit with the inner guide edge (204) or the outer guide edge (203). A number of tooth grooves (504) are formed on the positioning grooves (503). The tooth grooves (504) cooperate with the semi-projectile head (407). The positions of the tooth grooves (504) on the two positioning grooves (503) are offset. An intermediate groove (505) is provided between the two positioning grooves (503). The intermediate groove (505) cooperates with the round-headed ball (301).

4. A single-hole double-bead lock core according to claim 1, characterized in that, The bottom end of the sliding edge (406) extends to the bottom surface of the semi-projectile head (407). Arc-shaped end parts are provided at the bottom of the sliding edge (406) and the semi-projectile head (407).

5. A single-hole double-bead lock core according to claim 2, characterized in that, The first spring (403) includes an intermediate part (408) and two end parts (409). An elastic part (410) is provided between the intermediate part (408) and the end parts (409). The pitch between the intermediate part (408) and the end parts (409) is a small pitch. The structural features of the second spring (304) are the same as those of the first spring (403).

6. A single-hole double-bead lock core according to claim 1, characterized in that Transmission parts (7) are provided inside the opposite end faces of the two lock cores (2). The transmission parts (7) are connected to the dial (6), and the two transmission parts (7) are connected by rivets.

7. A single-hole double-bead lock core according to claim 1, characterized in that, A through hole (103) is formed in the middle of the lock housing (1), and the through hole (103) is a threaded hole.

8. A single-hole double-bead lock core according to claim 1, characterized in that, A snap ring groove is provided on the outer side of one end of the lock core (2) close to the dial (6). A snap ring (8) is provided between the snap ring groove and the lock housing (1).

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