Pin tumbler lock cylinder and lock

Abstract

The invention provides a pin tumbler lock cylinder and a lock. The pin tumbler lock cylinder comprises an inner cylinder, an outer cylinder and a pin tumbler assembly, the outer cylinder is provided with a plurality of bent pin tumbler tunnels, the inner cylinder is provided with a key hole and a plurality of pin tumbler through holes, and the key hole is communicated with the pin tumbler through holes; the inner core is provided with a marble blind hole; an included angle is formed between the marble blind hole and the marble through hole; when the inner core is located at a preset angle position, the key hole, the marble through hole, the marble tunnel and the marble blind hole are sequentially communicated to form a marble group mounting space; the marble assembly comprises a ball group, a first marble group, a second marble group and an elastic piece; in one group of marble components, the elastic piece is arranged in the marble blind hole, the first marble group is arranged between the marble through hole and the marble tunnel, the second marble group is arranged between the marble blind hole and the marble tunnel, and the ball group is arranged in the marble tunnel and located between the first marble group and the second marble group. The lock comprises the pin tumbler lock cylinder. The anti-prying performance is improved by improving the mounting space of the marble group.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of locks, in particular to a pick-resistant lock cylinder and a lock. BACKGROUND

[0002] The existing pick-resistant lock cylinder includes an inner cylinder and an outer cylinder, the inner cylinder is rotatably arranged in the inner periphery of the outer cylinder. The outer cylinder is provided with a plurality of pin channels, the pin channels extend along the radial direction of the inner cylinder, and the plurality of pin channels are arranged in a straight line along the axial direction of the inner cylinder. The inner side of the pin channel is provided with a channel opening towards the inner cylinder, and the outer side of the pin channel is blocked. The inner cylinder is provided with a key hole and a plurality of pin holes, the pin holes extend along the radial direction of the inner cylinder and are arranged in a straight line along the axial direction of the inner cylinder. When the inner cylinder is rotated to a preset angular position, the pin holes and the pin channels are communicated to form a pin assembly installation space. The pick-resistant lock cylinder further includes a plurality of pin assemblies, each pin assembly is installed in a corresponding pin assembly installation space, and the pin assembly includes at least two pins and a spring. The plurality of pins and the spring are installed in the pin assembly installation space from the inside to the outside, and the innermost pin extends into the key hole, and the spring abuts between the outer wall of the lock cylinder and the outermost pin.

[0003] In the locked state of the pick-resistant lock cylinder, the inner cylinder is at the above-mentioned preset angular position and the pin holes and the pin channels are communicated to form a pin assembly installation space, under the action of the spring, one of the pins in each pin assembly is clamped between the pin hole and the pin assembly installation space, so that the inner cylinder cannot rotate relative to the outer cylinder; when the appropriate key is inserted, the pins can be lifted to the correct position, so that the gap between the adjacent two pins in each pin assembly is aligned with the gap between the inner cylinder and the outer cylinder, at this time the inner cylinder can rotate relative to the outer cylinder, at this time the pick-resistant lock cylinder is in the unlocked state.

[0004] The existing single-row pin pick-resistant lock cylinder can directly and destructively lift all the pins according to the pin position of the key hole, so that all the pins are withdrawn from the pin hole and completely enter the pin channel. In this state, the inner cylinder can rotate, and thus the pick-resistant effect is poor. SUMMARY

[0005] The first object of the present application is to provide a pick-resistant lock cylinder that effectively improves the pick-resistant performance.

[0006] The second object of the present application is to provide a lock that effectively improves the pick-resistant performance.

[0007] The first object of the present application provides a pin tumbler lock cylinder, which comprises an inner cylinder, an outer cylinder and a pin assembly. The inner cylinder is rotatably arranged, and the outer cylinder is located at the outer periphery of the inner cylinder. The outer cylinder is provided with a plurality of pin channels, which are arranged in a straight line along the axial direction of the inner cylinder. The inner cylinder is provided with a key hole and a plurality of pin through holes, which are arranged in a straight line along the axial direction of the inner cylinder. The key hole is located at the inner periphery of the plurality of pin through holes and communicates with the plurality of pin through holes. The inner cylinder is provided with a pin blind hole. In the axial projection, the pin blind hole and the pin through hole form an angle. The pin channel is provided as a pin tunnel, and the two ends of the pin tunnel are open, and at least a part of the pin tunnel is curvedly extended. When the inner cylinder is at a preset angle position, the key hole, the pin through hole, the pin tunnel and the pin blind hole sequentially communicate to form a pin group installation space. The pin assembly comprises a ball group, a first pin group, a second pin group and an elastic member. The pin assembly is arranged in the pin group installation space. In a group of pin assemblies, the elastic member is arranged in the pin blind hole, the first pin group is arranged between the pin through hole and the pin tunnel, the second pin group is arranged between the pin blind hole and the pin tunnel, and the ball group is arranged in the pin tunnel and located between the first pin group and the second pin group.

[0008] As can be seen from the above scheme, the present application improves the pin group installation space, sets the pin channel as a curved pin tunnel, one end of the pin tunnel communicates with the key hole and the pin through hole, and the other end communicates to the newly arranged pin blind hole on the inner cylinder. Under this setting, if the lock cylinder needs to be unlocked, not only is it required that the pin gap of the first pin group at the pin through hole is aligned with the lock cylinder gap (the gap between the inner cylinder and the outer cylinder), but also it is required that the pin gap of the second pin group at the pin blind hole is aligned with the lock cylinder gap. In this way, if the lock picker uses the previous way of lifting the first pin group to pick the lock, even if the first pin group is damaged and lifted and completely retracted into the pin channel, the second pin group is still stuck at the lock cylinder gap, so it is difficult to be picked. Further, since the pin blind hole is not exposed to the key hole, the lock picker cannot determine the position of the second pin group, so the lock cylinder is difficult to be picked.

[0009] A further scheme is that, in the axial projection, the angles of at least two single pin group installation spaces are different.

[0010] As can be seen above, in the axial projection, the angle of the pin group installation space is equal to the angle formed by the pin blind hole and the pin through hole contained therein, and also equal to the angle formed by the first straight tunnel part and the second straight tunnel part of the pin tunnel contained therein. Under this setting, the second pin groups of at least two pin assemblies are located at different angles. Since the pin blind hole is not exposed to the key hole, it is more difficult for the lock picker to determine the position of each second pin group, thus further improving the anti-picking effect.

[0011] A further scheme is that the outer cylinder comprises a plurality of tunnel modules arranged in sequence along the axial direction, and each tunnel module is provided with a pin tunnel.

[0012] From the above, when at least two pin tunnels with different angles need to be set, the setting facilitates to reduce the processing difficulty of the outer core, and realizes the modularization of the pin tunnel, and the plurality of pin tunnels with different angles can be freely combined.

[0013] In a further aspect, the pin group mounting space is arranged on a plane, and the plane is perpendicular to the rotation axis of the inner core.

[0014] From the above, the setting reduces the manufacturing difficulty and assembly difficulty of the components.

[0015] In a further aspect, the first included angle is 90 degrees, and the second included angle is greater than the first included angle.

[0016] From the above, since the included angles of the two ends of the pin tunnel are consistent with the included angle between the pin blind hole and the pin through hole, if the included angle is less than 90 degrees, the pin tunnel will be too curved, and the smoothness of the movement of the ball will decrease. Therefore, the setting ensures that the pin tunnel is relatively moderate in curvature, the smoothness of the movement of the ball is improved, and the unlocking action is more smooth.

[0017] In a further aspect, the pin tunnel comprises a first straight tunnel portion, a curved tunnel portion and a second straight tunnel portion connected in sequence; the first pin group is arranged between the first straight tunnel portion and the pin through hole; the second pin group is arranged between the second straight tunnel portion and the pin blind hole; and the ball group is arranged in the first straight tunnel portion, the curved tunnel portion and the second straight tunnel portion.

[0018] From the above, since the first pin group and the second pin group need to move along a straight line, the setting ensures the straight line movement space of the first pin group and the second pin group and ensures the straightness of the movement.

[0019] In a further aspect, the outer core is provided with a slot, and the slot is communicated to the pin tunnel; the magnetic attraction baffle mechanism comprises a coil piece, a baffle piece and a reset piece; under the restoring force of the reset piece, the baffle piece is inserted into the pin tunnel through the slot and clamped between the two balls of the ball group; the coil piece is energized to attract the baffle piece and make the baffle piece exit the slot.

[0020] From the above, when the key is not inserted, the baffle piece is clamped between the two balls, and the lock picker cannot pry the first pin group at all, further improving the anti-prying performance; when the user controls the coil to be energized through the computer key or the device through the wireless signal, the baffle piece exits the pin through tunnel, at which time the mechanical key can be used to operate the unlocking.

[0021] In a further aspect, the magnetic attraction baffle mechanism is mounted on the outer core.

[0022] In a further aspect, the outer core is provided with a mounting cavity around the pin tunnel, and the magnetic attraction baffle mechanism is arranged in the mounting cavity.

[0023] From the above, the bending pin tunnel around the formation of a region that is not utilized, the use of the region set magnetic attraction baffle mechanism, not only makes the baffle piece enough close to the pin tunnel, and makes the lock cylinder structure more compact, conducive to the lock small size.

[0024] The second purpose of the present application provides a lock comprising the pin tumbler cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The structure diagram of the first embodiment of the lock and the key of the present application.

[0026] Figure 2 The structure diagram of the first embodiment of the lock and the key of the present application.

[0027] Figure 3 The structure diagram of the first embodiment of the lock and the key of the present application.

[0028] Figure 4 The structure diagram of the first embodiment of the lock and the key of the present application.

[0029] Figure 5 The structure diagram of the first embodiment of the lock and the key of the present application.

[0030] Figure 6 The structure diagram of the first embodiment of the lock and the key of the present application.

[0031] Figure 7 The structure diagram of the first embodiment of the lock and the key of the present application.

[0032] Figure 8 The structure diagram of the first embodiment of the lock and the key of the present application. DETAILED DESCRIPTION

[0033] The first embodiment of the pin tumbler cylinder and the lock Referring to Figure 1 and Figure 2 , the lock of the present embodiment is a padlock, which is the same as the padlock of the prior art, and comprises a shell 11, a lock ring 12, a lock tongue 13, a lock tongue spring 14 and a pin tumbler cylinder arranged in the shell 11. Under the restoring force of the lock tongue spring 14, the tongue tip of the lock tongue 13 is buckled to the buckling position 121 of the lock ring 12, so that the lock ring 13 is in the locked position. The pin tumbler cylinder comprises an eccentric shaft 39. After the matched key 9 is inserted into the keyhole and rotated, the eccentric shaft 39 can be driven to rotate. The rotating eccentric shaft 39 can push the lock tongue 13, and finally the lock tongue 13 is separated from the buckling position 121, and the lock ring 12 is in a state that can be unlocked.

[0034] The present application mainly improves the pin tumbler cylinder.

[0035] In combination Figure 3 , the pin tumbler lock core comprises an inner core 3, an outer core 4 and a pin assembly 5. The inner core 3 is installed in the inner core installation hole of the outer shell 11, and the inner core 3 can rotate around the rotation axis under the limitation of the installation hole. In this embodiment, the outer core 4 is not a surrounding structure, and the outer core 4 is installed in the outer core 4 installation position of the outer shell 11 and located at the outer periphery of the inner core 3.

[0036] In combination Figure 4 , the inner core 3 is provided with a key hole 31 and a plurality of pin through holes 32, and the plurality of pin through holes 32 are arranged in a straight line along the axial direction of the inner core 3. The key hole 31 is located at the inner periphery of the plurality of pin through holes 32 and communicates with the plurality of pin through holes 32. In particular, the inner core 3 is provided with a plurality of pin blind holes 33, and the plurality of pin blind holes 33 are arranged in a straight line along the axial direction of the inner core 3. The number of pin blind holes 33 is equal to the number of pin through holes 32. In the projection of the axial direction of the inner core 3, the pin blind hole 33 and the pin through hole 32 form an angle, and the angle in this embodiment is 90 degrees.

[0037] The outer core 4 is provided with a plurality of pin channels, and the plurality of pin channels are arranged in a straight line along the axial direction of the inner core 3. Further, the outer core 4 comprises a plurality of tunnel modules 41 arranged in sequence along the axial direction, and each tunnel module 41 is provided with a pin channel. In this application, the pin channel is provided as a pin tunnel 40, and the pin tunnel 40 is open at both ends and at least a part of the pin tunnel 40 is curvedly extended.

[0038] In combination Figure 3 , the tunnel module 41 comprises two module half shells 411 oppositely arranged along the axial direction, and each module half shell 411 is provided with a tunnel groove. The tunnel grooves of the two module half shells 411 are opposite to each other and constitute the pin tunnel 40. The pin tunnel 40 comprises a first straight tunnel part 401, a curved tunnel part 403 and a second straight tunnel part 402 which are connected in sequence. In the projection of the axial direction of the inner core 3, the first straight tunnel part 401 and the second straight tunnel part 402 of the same pin tunnel 40 form an angle of 90 degrees.

[0039] In combination Figure 3 , the pin assembly 5 comprises a first pin group 51, a second pin group 52, a ball group 53 and a spring 54. The spring 54 is the elastic member of the application and is a compression spring. In this embodiment, the first pin group 51 comprises a first pin 511 and a second pin 512, the second pin group 52 comprises a third pin 521 and a fourth pin 522, and the ball group 53 comprises 11 balls 531.

[0040] In combination Figure 4 , Figure 4The inner core 3 is shown in a preset angle position. When the inner core 3 is in the preset angle position, the keyhole 31, the pin through hole 32, the pin tunnel 40 and the pin blind hole 33 are sequentially communicated to become a pin group installation space. As shown in Figure 4 The pin group installation space is arranged on a plane which is a plane perpendicular to the rotation axis of the inner core 3. In addition, in the embodiment, the angles of the plurality of pin group installation spaces are the same and are all 90 degrees. The angle of the pin group installation space is equivalent to the included angle between the pin blind hole 33 and the pin through hole 32.

[0041] Continuing to refer to Figure 4 Each pin group assembly 5 is arranged in a pin group installation space. In the pin group assembly 5, the spring 54 is arranged in the pin blind hole 33, the first pin group 51 is arranged between the pin through hole 32 and the pin tunnel 40, the second pin group 52 is arranged between the pin blind hole 33 and the pin tunnel 40, and the ball group 53 is arranged in the pin tunnel 40 and located between the first pin group 51 and the second pin group 52.

[0042] More specifically, the first pin group 51 is arranged between the first straight tunnel portion 401 and the pin through hole 32, the second pin group 52 is arranged between the second straight tunnel portion 403 and the pin blind hole 33, and the ball group 53 is arranged in the first straight tunnel portion 401, the curved tunnel portion 402 and the second straight tunnel portion 403, wherein most of the balls 531 in the ball group 53 are located in the curved tunnel portion 402.

[0043] The present application improves the pin group installation space, and arranges the pin passage as a curved pin tunnel 40, one end of which is communicated with the keyhole 31 and the pin through hole 32, and the other end is communicated to the newly arranged pin blind hole 33 on the inner core 3. Under this arrangement, if the lock core needs to be unlocked, not only the pin gap of the first pin group 51 at the pin through hole 32 needs to be aligned with the lock core gap (the gap between the inner core 3 and the outer core 4), but also the pin gap of the second pin group 52 at the pin blind hole 33 needs to be aligned with the lock core gap. In this way, if the lock picker uses the previous way of lifting the first pin group 51 to pick the lock, even if the first pin group 51 is damaged and lifted and completely retracted into the pin tunnel 40, the second pin group 52 is still stuck in the lock core gap, so it is difficult to be picked, and since the pin blind hole 33 is not exposed to the keyhole 31, the picker cannot determine the position of the second pin group 52, so the lock core is difficult to be picked. Therefore, this improvement makes the pin tumbler lock core have better anti-picking performance.

[0044] Second embodiment of pin tumbler lock core and lock Referring to Figures 5 to 7 Different from the first embodiment, the second embodiment further comprises a magnetic attraction baffle mechanism 6. The outer core 4 is provided with a mounting cavity 49 around the pin tunnel 40', and the magnetic attraction baffle mechanism 6 is arranged in the mounting cavity 49.

[0045] The magnetic blocking plate mechanism 6 comprises a coil member 61, a blocking plate member 62 and a restoring member 63. The coil member 61 comprises a coil seat 611 and a coil 612, and the coil 612 is wound on the coil seat 611. The coil seat 611 is provided with a sliding hole 610 at the center of the coil 612.

[0046] The blocking plate member 62 comprises a magnetic block 622 and a blocking plate 612 connected with each other. The magnetic block 622 is slidably installed in the sliding hole 610. The restoring member 63 is a compression spring, and two restoring members 63 are arranged in the sliding hole 610 and abut between the bottom of the sliding hole 610 and the bottom of the magnetic block 622.

[0047] The outer core 4' is provided with a slot 48, which is communicated to the pin hole 40' and further extends through the pin holes 40' in the axial direction and extends in the radial direction of the inner core.

[0048] Under the restoring force of the restoring member 63, the blocking plate member 62 is inserted into the pin hole 40' through the slot 48 and clamped between two balls 531 of the ball set, so that the balls cannot be driven and the mechanical key cannot be inserted to unlock. When the coil member 61 is powered to attract the magnetic block 622, the blocking plate member 62 is withdrawn from the slot 48, so that the mechanical key can be used to operate the unlocking.

[0049] In addition, the surrounding of the curved pin hole 40' forms an unused area, and the magnetic blocking plate mechanism 6 is arranged in the area, so that the blocking plate member 62 is close enough to the pin hole 40' and the lock core structure is more compact, which is beneficial to the miniaturization of the lock.

[0050] Third embodiment of the pin tumbler lock core and lock Referring to Figure 8 Different from the first embodiment, the angles of the three pin set installation spaces a, b and c of the pin tumbler lock core are different. It is again explained that the angle of the pin set installation space under the axial projection is equivalent to the included angle between the pin through hole and the pin blind hole, and is also equivalent to the included angle between the first straight tunnel part and the second straight tunnel part of the pin tunnel.

[0051] As shown in Figure 8 The included angle between the pin through hole 711 and the pin blind hole 712 of the pin set installation space a is 90 degrees, the included angle between the pin through hole 721 and the pin blind hole 722 of the pin set installation space b is 135 degrees, and the included angle between the pin through hole 731 and the pin blind hole 732 of the pin set installation space c is 180 degrees.

[0052] In the axial projection, the plurality of pin group mounting spaces have different angles, which actually makes the angle positions of the pin blind holes of the plurality of pin group mounting spaces different, and the angle positions of the plurality of second pin groups different. In this arrangement, the second pin groups of the at least two pin group assemblies are located at different angles. Since the pin blind holes are not exposed to the keyhole, it is more difficult for a lock picker to determine the position of each second pin group, thereby further improving the anti-picking effect.

[0053] Of course, the above-mentioned angles are only illustrative of the different angles of the plurality of pin group mounting spaces, and do not limit the actual angles of the pin group mounting spaces of the present application.

[0054] In addition, other structures not described in the above embodiments are implemented according to the prior art means of the existing padlocks.

[0055] Finally, it should be emphasized that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A pin tumbler lock cylinder, comprising an inner core and an outer core, wherein the inner core is rotatably disposed, and the outer core is located on the outer periphery of the inner core; The outer core is provided with multiple ball channels, which are arranged along the axial direction of the inner core; The inner core is provided with a keyhole and multiple pin holes, the multiple pin holes are arranged along the axial direction of the inner core, and the keyhole communicates with the multiple pin holes; It also includes the pin assemblies; Its features are: The inner core is provided with a blind hole for a ball, and on the projection of the axial direction, the blind hole for a ball forms an angle with the through hole for a ball; The ball channel is configured as a ball tunnel, the ball tunnel is open at both ends and at least a portion of the ball tunnel is curved and extended; When the inner core is at a preset angle position, the keyhole, the ball through hole, the ball tunnel and the ball blind hole are connected in sequence to form a ball assembly installation space; The ball assembly includes a ball set, a first ball set, a second ball set, and an elastic element; The ball assembly is disposed in the ball group installation space. In a set of ball assemblies, the elastic element is disposed in the ball blind hole. The first ball group is disposed between the ball through hole and the ball tunnel. The second ball group is disposed between the ball blind hole and the ball tunnel. The ball group is disposed in the ball tunnel and located between the first ball group and the second ball group.

2. The pin tumbler lock cylinder according to claim 1, characterized in that: Under the projection of the axial direction, the angles of the installation spaces of at least two subgroups are different.

3. The pin tumbler lock cylinder according to claim 2, characterized in that: The outer core includes a plurality of tunnel modules arranged sequentially along the axial direction, and each tunnel module is provided with one ball tunnel.

4. The pin tumbler lock cylinder according to claim 3, characterized in that: The mounting space for the ball set is located on a plane, which is perpendicular to the rotation axis of the inner core.

5. The pin tumbler lock cylinder according to claim 2, characterized in that: The first included angle is 90 degrees, and the second included angle is greater than the first included angle.

6. The pin tumbler lock cylinder according to claim 1, characterized in that: The bullet tunnel includes a first straight tunnel section, a curved tunnel section, and a second straight tunnel section connected in sequence. The first set of tumblers is disposed between the first straight tunnel section and the tumbler through hole; The second set of tumblers is disposed between the second straight tunnel section and the tumbler blind hole; The ball bearing assembly is disposed in the first straight tunnel section, the curved tunnel section, and the second straight tunnel section.

7. The pin tumbler lock cylinder according to any one of claims 1 to 6, characterized in that: The outer core is provided with a slot, and the slot is connected to the tumbler tunnel; It also includes a magnetic baffle mechanism, which comprises a coil component, a baffle component, and a reset component; Under the restoring force of the reset member, the baffle member is inserted into the ball tunnel through the slot and locked between the two balls of the ball assembly; When the coil is energized, it can attract the baffle and cause the baffle to exit the slot.

8. The pin tumbler lock cylinder according to claim 7, characterized in that: The magnetic baffle mechanism is mounted on the outer core.

9. The pin tumbler lock cylinder according to claim 8, characterized in that: The outer core has an installation cavity around the ball tunnel, and the magnetic baffle mechanism is disposed in the installation cavity.

10. A lock, characterized in that, Includes the pin tumbler lock cylinder as described in any one of claims 1 to 9.

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