Conditional decoding mechanical lock and unlocking method

Abstract

This invention provides a conditionally decoded mechanical lock, the lock body of which includes: a key, a lock cylinder, and a lock cylinder; wherein the lock cylinder further includes a keyhole closing mechanism, a key release restriction mechanism, and a triggering mechanism; when the key is inserted, the key pushes the triggering mechanism, closing the keyhole and releasing the restriction on the lock cylinder key; the key decodes the lock cylinder key, and the lock cylinder is turned to unlock. This invention restricts the space for key detection and the time for key detection; without time and space constraints, the security of the key is greatly enhanced.

Description

Technical Field

[0001] This invention relates to a lock, and more particularly to the control of the movement of a lock key. Background Technology

[0002] Locks play a vital role in human society, playing an irreplaceable role in protecting property and even lives. Currently, in existing pin tumbler locks, the upper pins in each row of pin holes are identical. However, due to manufacturing errors, gaps exist between the upper and lower pins and the pin holes. Utilizing these unavoidable gaps in the manufacturing process, the decoding method is as follows: First, insert a hook into the lock cylinder's neutral position to generate torque. Then, use a master key to push the lower pins, first pushing the pair with the smallest gap to the junction of the lock cylinder and lock body. At this point, the lock cylinder rotates slightly under the torque of the hook. Then, push the pairs of upper and lower pins, starting with the smallest gap and gradually increasing it, to the junction of the lock cylinder and lock body. The lock cylinder, under the torque of the hook, rotates slightly more each time. This continues until the last pair of upper and lower pins reaches the junction of the lock cylinder and lock body. At this point, the lock cylinder can rotate significantly under the torque of the hook, and the lock is opened.

[0003] Meanwhile, in known pin tumbler locks, when each pin reaches its lowest position, its bottom surface can reach the bottom surface of the keyhole in the lock cylinder or the protruding part inside the S-shaped keyhole. The method of unlocking using a vibratory lock pick is as follows: each groove of the vibratory pick's vibrating plate is set according to the longest pin. When inserted into the lock cylinder, the vibratory pick's vibrating plate generates a slight vibration that pushes against the pins. The pins, with the gaps increasing from small to large, are vibrated one by one until they reach the junction of the lock cylinder and the lock body. At this point, under the torque of the vibratory pick's vibrating plate, the lock cylinder rotates slightly by one angle. Until the last pair of pins reaches the junction of the lock cylinder and the lock body, the lock cylinder can then rotate significantly under the torque of the vibratory pick's vibrating plate, and the lock is opened. A vibratory lock pick can also be used to unlock without a key. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a lock with restricted key pin movement. When the keyhole is open, the key pin movement is restricted, and the key cannot be detected to the unlock position. When the key is inserted into the keyhole and the key is closed, the key restriction is lifted.

[0005] The unlocking method provided by this invention restricts the movement of the key pins. When the keyhole is open, the key pins cannot move freely. To unlock with a key, the key pins are first released from their restriction, and the keyhole is closed at the same time. Then, the key is matched to unlock.

[0006] The lock includes: a key, a lock cylinder, and a lock cylinder. The lock cylinder includes multiple two-section keys. When the contact lines of the two-section keys coincide with the circumference of the lock cylinder, the lock can be unlocked. When the keyhole is open, the key is restricted and cannot reach the position where the contact lines of the two-section keys coincide with the circumference of the lock cylinder. When the key is inserted into the keyhole, the restriction on the key is released, and the keyhole is closed.

[0007] The key unlocking method provided by the present invention includes a lock body comprising: a key, a lock head body, and a lock cylinder; wherein the lock cylinder is further provided with a key hole closing mechanism, a key release restriction mechanism, and a triggering mechanism; the steps are: inserting the key, the key pushes the triggering mechanism to close the key hole and release the restriction on the lock cylinder key, the key decodes the lock cylinder key, and the lock cylinder is rotated to unlock.

[0008] Preferably, closing the keyhole and releasing the lock cylinder key restriction are accomplished by a single component working together.

[0009] Alternatively: After closing the keyhole, the lock cylinder key restriction can be released via photoelectric induction.

[0010] Another aspect of the present invention provides a conditionally decoded mechanical lock, which includes: a key, a lock head body, and a lock cylinder; wherein the lock cylinder is further provided with a keyhole closing mechanism, a key release restriction mechanism, and a triggering mechanism;

[0011] When the key enters the keyhole, it pushes the key restriction mechanism to activate the keyhole closing mechanism and close the keyhole.

[0012] When the keyhole is closed, the key release mechanism releases the restriction on the lock cylinder key;

[0013] With the keyhole open, the key restriction mechanism restricts the movement of the key, preventing the lock cylinder from being decoded.

[0014] Preferably, the keyhole interception mechanism is located at the front end of the keyhole, or in the middle section of the keyhole, or on other keyhole channels.

[0015] Preferably, the lock cylinder includes a plurality of two-section keys, and the key release restriction mechanism restricts the contact surface of the two-section keys to match the circumference of the lock cylinder.

[0016] Preferably, the lock cylinder has a slot that is approximately parallel to the key channel. The key restriction mechanism includes a clamping frame and a push rod. The clamping frame is located in the slot, and the push rod is located at the top of the key hole. The clamping frame is on the path of key movement. The clamping frame includes a release hole and a restriction hole that match the key hole. The key can move up and down in the release hole and its movement is restricted in the restriction hole.

[0017] This invention restricts decryption activities when the keyhole is open, preventing the key from reaching the unlock position, detecting it without a duplicate key, and moving it to the unlock position. When the keyhole is closed, the key restrictions are lifted, allowing normal decoding by the key. This invention limits the space and time for key detection; without both time and space constraints, key security is greatly enhanced. Attached Figure Description

[0018] Figure 1 a is a schematic diagram of the overall appearance of the lock body in this embodiment 2;

[0019] Figure 1 b is Figure 1 Sectional view of AA in a;

[0020] Figure 2 This is a schematic diagram showing the positional relationship between the key restriction mechanism, key, and gate in Example 2.

[0021] Figure 3 This is a schematic diagram of the gate structure in Example 2;

[0022] Figure 4 This is a schematic diagram of the lock body structure in Example 2;

[0023] Figure 5 This is a schematic diagram of the lock cylinder structure in Example 2;

[0024] Figure 6 This is a schematic diagram of the key restriction mechanism in Example 2;

[0025] Figure 7 This is a schematic diagram of the key structure in Example 2;

[0026] Figure 8 Diagram showing the connection between the key restriction mechanism and the gate;

[0027] Figure 9 This is a schematic diagram of the gate structure;

[0028] Figure 10 This is a diagram of the gate structure;

[0029] Figure 11 This is a schematic diagram of the lock body appearance in Example 3;

[0030] Figure 12 for Figure 11 Sectional view along line AA;

[0031] Figure 13 This is a schematic diagram of the lock body structure in Example 3;

[0032] Figure 14 This is a schematic diagram of the lock cylinder structure in Example 3;

[0033] Figure 15This is a schematic diagram showing the relationship between the various parts inside the lock cylinder in Example 3;

[0034] Figure 16 This is a schematic diagram of the key restriction mechanism in Example 3;

[0035] Figure 17 This is a schematic diagram of the linkage structure in Example 3;

[0036] Figure 18 This is a schematic diagram showing the positional relationship between the gate and the actuating component in Example 3;

[0037] Figure 19 This is a side view of the gate in Example 3;

[0038] Figure 20 This is a schematic diagram of the linkage bumper structure in Example 3;

[0039] Figure 21 This is a schematic diagram of the linkage bumper structure in Example 3;

[0040] Figure 22 This is a schematic diagram of the first sub-body structure in Example 3;

[0041] Figure 23 This is a schematic diagram of the second sub-body structure in Example 3;

[0042] Figure 24 This is a schematic diagram of the toggle mechanism structure in Example 3;

[0043] Figure 25 This is a schematic diagram of the lever structure of Example 3;

[0044] Figure 26 This is a schematic diagram illustrating the relationship between the sub-body, the movable seat key, the key, and the gate in Example 3.

[0045] Figure 27 This is a schematic diagram of the gate movable seat assembly in Example 4;

[0046] Figure 28 This is a schematic diagram of the trigger key restriction mechanism in Example 5;

[0047] Figure 29 Example 6: Schematic diagram of the trigger key restriction mechanism.

[0048] Figure 30 This is a top view of Example 7;

[0049] Figure 31 for Figure 30 Sectional view of the Y-Y plane;

[0050] Figure 32 for Figure 30 Z-Z sectional view;

[0051] Figure 33This is a top view of Example 8;

[0052] Figure 34 for Figure 30 Sectional view of the M-M plane;

[0053] Figure 35 for Figure 30 N-N sectional view. Detailed Implementation

[0054] Explanation of nouns and definitions:

[0055] The key mentioned in this application refers to a tumbler, square pin, or other irregularly shaped pin that matches the key and meshes with the key teeth to achieve a match with the outer diameter of the lock cylinder.

[0056] Example 1:

[0057] An unlocking method is provided, wherein the lock includes: a key, a lock cylinder, and a lock cylinder; the lock cylinder includes multiple two-section keys, and the two-section key contact lines coincide with the circumference of the lock cylinder to achieve unlocking; when the keyhole is open, the keys are restricted and cannot reach the position where the two-section key contact surfaces coincide with the circumference of the lock cylinder; when the key is inserted into the keyhole, the keyhole is closed, and the restriction on the keys is released.

[0058] Example 2:

[0059] like Figure 1-10 The mechanical lock of this embodiment includes a key 1, a lock cylinder 2, and a lock core 3. The lock core includes a key, which has at least two sections. The key can be in the form of a pin 31, a square pin 32, an irregularly shaped square pin 33, or other shapes. The movement of the key is restricted, and the inner pin or inner square pin cannot reach the unlock position. In this embodiment, the key restriction mechanism includes a pushing part 41 and a clamping frame 42. In this embodiment, the key restriction mechanism is an L-shaped structure rod 4, with the pushing rod being one side 41 of the L-shape and the clamping frame being the other side 42 of the L-shape.

[0060] The lock cylinder 6 has a second channel 66 roughly parallel to the keyhole channel. A clamping bracket 42 is placed within the second channel 66. A pushing part 41 is located at the rear end of the lock cylinder 6 and abuts against the top of the keyhole, pushed by the key. The lock cylinder 6 has a gate groove 62, a pin hole 63, a square pin hole 64, and an irregularly shaped square pin hole 65 in the direction perpendicular to the keyhole. Figure 5 As shown. The lock body is as follows. Figure 4 As shown, a lock cylinder cavity 25 is provided in the axial direction, and a gate cavity 24, a pin hole 21, a square column hole 22, and an irregular square column hole 23 are provided in the radial direction. The cooperation between the lock head body 2 and the lock cylinder 6, and the cooperation relationship between the pin and the lock cylinder are existing technologies.

[0061] like Figure 2 , Figure 6The key-locking mechanism has a through groove 421 in the middle of the clamping frame 42. The inner pins 312, inner square pins 322, and irregular square pins 332 are held on the through groove 421. The through groove wall has multiple first inclined surfaces 422. The inner pins or inner square pins have different diameters on their corresponding sidewalls, with the lower section being narrower. The sidewall at the narrowed section has a second inclined wall 35 corresponding to the inclined wall of the through groove. The clamping frame 42 moves in the vertical direction of the pins, and the first inclined surface 422 and the second inclined surface 34 move relative to each other. The pins 31, square pins 32, and irregular square pins 33 rise and fall in the clamping frame 42. The clamping frame 42 restricts the pins 31, etc., to a high position, suspended above the keyhole, or to a low position, which is moved by the key. The clamping frame 42 restricts the rise and fall of the pins; the clamping frame can restrict each inner pin or inner square pin in the lock cylinder, or it can restrict some of the pins or square pins in the lock cylinder.

[0062] The clamping frame 42 is linked with the gate 5. The clamping frame 42 abuts against the gate 5 at its front end. The front end of the clamping frame is provided with a downward-facing third inclined surface 423. The lower end of the gate is provided with a corresponding upward-facing fourth inclined surface 51. When the clamping frame 42 is locked, the third inclined surface 423 abuts against the fourth inclined surface 51 of the gate. When the gate is unlocked, the clamping frame moves into the key channel, causing the third inclined surface 423 to move horizontally. The fourth inclined surface 51 that matches it moves downward, and the gate 5 falls down. The top of the gate 5 matches the arc surface 53 of the lock cylinder.

[0063] Example 3:

[0064] like Figures 11 to 26 As shown: The mechanical lock of this embodiment includes a key 1, a lock body 2, and a lock cylinder 6. The lock cylinder 6 includes a key. The key restriction mechanism 4 is similar to that of embodiment 1. The key restriction mechanism of this embodiment also includes a trigger mechanism 36. The trigger mechanism is located on the lock cylinder and lock head body in the direction perpendicular to the keyhole. The trigger mechanism includes a trigger pin hole 36 and a trigger pin 361. A trigger pin hole 45 is provided on the clamping frame 42. A trigger pin hole 69 is also provided in the radial direction of the lock cylinder, parallel to the pin hole. The lock head body is also provided with a corresponding trigger pin hole 27. The trigger hole is located on the lock cylinder and lock head body and contains multiple trigger pins. In this embodiment, the trigger pins are four-sectioned, including a first trigger pin 361, a second trigger pin 362, a third trigger pin 263, and a fourth trigger pin 364. When the contact surfaces of the third trigger pin 363 and the fourth trigger pin 364 are parallel to the bottom surface of the clamping frame 42, and the contact surfaces of the third trigger pin 363 and the second trigger pin 362 are parallel to the upper surface of the clamping frame 42, the clamping frame 42 can move away from the constraint of the trigger pins.

[0065] The keyhole closing mechanism includes an upper gate 501 and a lower gate 502. Corresponding recesses 24 are provided on the lock cylinder and lock body for the upper and lower gates to be inserted. When the keyhole is open, the outer arc surfaces of the upper gate 501 and the lower gate 502 extend beyond the outer edge of the lock cylinder and into the recess 24 of the lock body. One or more of the key-shaped inner square post 332, square post 32, and double-shoulder pin 31 are held up by the key-restricting mechanism 4 and extend beyond the outer edge of the lock cylinder.

[0066] like Figure 14 The lock cylinder 6 has a connecting rod channel 66 on the other side of the keyhole channel. The connecting rod channel 66 is roughly parallel to the keyhole. The connecting rod 7 is located in the connecting rod channel 66, with one end abutting against the top plate 41 of the key restriction mechanism and the other end abutting against the lower gate 502. The contact surface is a beveled abutment, with the bevel at the end of the connecting rod facing upwards and the bevel 75 decreasing inwards from the end. Thus, when the connecting rod 7 moves into the keyhole, it drives the lower gate 502 to move upwards and inwards, thereby closing the gate. The lock cylinder has a connecting rod safety bar on the outside of the connecting rod, perpendicular to the connecting rod 7. The connecting rod has a beveled groove 74 for the connecting rod safety bar to enter. The connecting rod safety bar is two-sectioned, including an inner connecting rod safety bar 71 and an outer connecting rod safety bar 72. Figure 16 , 17 A pressure spring is provided at the outer end of the outer safety bar, and the safety bar is subjected to pressure in the direction of the connecting rod. When the connecting rod moves, the inner connecting rod safety bar 71 enters the connecting rod inclined groove 74. The contact surfaces of the inner and outer connecting rod safety bars are parallel to the outer edge surface of the lock cylinder, and the lock cylinder can rotate. The connecting rod safety bar adds a layer of security to the lock cylinder, and the connecting rod safety bar is also equivalent to a pin tumbler.

[0067] like Figure 17 A blade 61 is provided between the keyhole channel and the connecting rod 7, and a blade limiting groove 73 is provided on the connecting rod. The blade 61 is moved away from the locked position by the key.

[0068] When key 1 is inserted into the keyhole and positioned, the top of the key contacts the force point 41 of the key restriction mechanism, pushing the key key mechanism clamp 42 inward. The upper gate 501 and the end of the clamp are inclined surfaces abutting each other, with the inclined surface of the end of the clamp facing downward and the inclined surface 51 of the upper gate facing upward. The clamp 42 moves into the keyhole, and its end presses down on the fourth inclined surface 51 at the lower end of the upper gate that matches it, causing the upper gate 501 to fall. The lower gate 502 moves upward under the push of the inclined surface at the end of the lower connecting rod 7, and the upper and lower gates close together. Until the gate foot 53 passes through the key's cutout 12, at this point, the outer end face 52 of the gate matches the outer arc surface of the lock cylinder, the key restriction mechanism 4 is released into position, and the blade limiting groove is also released into position. The irregular inner square column 332, inner square column 322, and double shoulder pin 312 move towards the key under the action of the spring 34, and the blade moves towards the decryption direction under the action of the spring. When the key matches the password, the key drives the lock cylinder to rotate and unlock.

[0069] like Figure 12, 21 to Figure 26 A movable key 8 is also provided on the outside of the gate. The movable key includes a first sub-body 81, a second sub-body 82, a toggle element 83, and a sub-body lever 84, such as... Figures 22 to 26 The lock cylinder has a movable key hole 60, which is roughly parallel to the key hole. A spring 34 is provided at the upper end of the movable key hole. The lower end of the first sub-body 81 is an inner arc surface 812, and the upper end of the second sub-body 82 is an outer arc surface 821. The contact surfaces of the two are the same as the curvature of the outer edge of the lock cylinder. The actuating member 83 is pushed by the key. The actuating surface 831 of the actuating member 83 pries the first arc surface 843 of the sub-body lever 84. The second arc surface 841 of the sub-body lever 84 moves downward at the other end of the pivot 843. The second sub-body 82 then descends and reaches the outer arc surface 821 of the second sub-body 82, which matches the outer edge of the lock cylinder 6. The movable key is then unlocked.

[0070] Example 4: Figure 27 As shown, the difference between this embodiment and embodiment 3 lies in the use of a movable seat key. This is a technical solution involving setting a movable seat key on the lock cylinder gate. In this embodiment, the gate 5 also serves as a sub-body, cooperating with the movable seat and the lock cylinder. The gate 5 has an outer arc top surface 52, whose curvature matches the outer edge of the lock cylinder, allowing it to rotate with the lock cylinder 6. From top to bottom, the gate 5 has one or more longitudinal through holes. This embodiment has three holes 524, which are hexagonal, square, and circular, respectively. The shape of the holes corresponds to the shape of the column, corresponding to the inner sub-body hexagonal column 96 and inner sub-body square column 96. The gate has a column 95 and an inner sub-body circular column 94. An outer movable seat 520 is provided on the top surface of the gate. The bottom surface of the outer movable seat is an arc surface 521, which matches the arc surface 52 of the top surface of the gate, i.e., has approximately the same curvature. It also matches the outer edge arc surface of the lock cylinder 6. The bottom surface of the outer movable seat is provided with three through holes 523 corresponding to the top surface of the gate. These holes are hexagonal, square, and circular, respectively. Correspondingly, there are outer sub-body hexagonal columns 93, outer sub-body square columns 92, and outer sub-body circular columns 91. A spring 34 is provided above the outer sub-body columns to compress the outer and inner sub-bodies. The working process is as follows: When the key is inserted into place, the force-applying surface pushes the key restriction mechanism 4 forward. The gate falls towards the key as the key restriction mechanism moves until the gate foot passes through the key cutout. At this time, the outer arc surface 52 of the top surface of the gate matches the outer edge of the lock cylinder 6, and the gate 5 closes. The inner sub-body circular column 94, inner sub-body square column 95, and inner sub-body hexagonal column 96 move towards the center of the lock cylinder under the pressure of the spring, matching the movable key seat. The top surfaces of the inner sub-body circular column 94, inner sub-body square column 95, and inner sub-body hexagonal column 96 also completely match the arc surface of the lock cylinder 6. The gate 5 is closed in place, and the movable key seat can be unlocked.

[0071] Example 5: Figure 28The difference between this embodiment and embodiment 1 is that the key restriction mechanism is triggered by a triggering mechanism, which is a trigger lever 365, including a lifting arm 3651 and a force-receiving arm 3652. The lifting arm 3651 and the force-receiving arm 3652 are pivotally connected to a shaft 3653. When the force-receiving arm 3652 is pressed inward, the lifting arm 3651 rises and pushes the third triggering column 363 to rise, leaving the obstruction of the inward movement of the blocking clamp 42. The other side of the force-receiving arm pushes the spring 3657 to push the push plate 41 of the key restriction mechanism forward, thereby releasing the key restriction mechanism 4 from the key restriction.

[0072] Example 6: As Figure 29 The difference between this embodiment and embodiment 5 is that the triggering mechanism is a triggering cam 366. The cam 366 is pivotally connected to the lower part of the triggering hole. The protrusion 3661 of the cam 366 is located below the triggering hole. When the triggering post rises, it pushes the third triggering post 363 to rise and move away from the block of the clamping frame. The lower part 3662 of the cam is located below the triggering hole. When the triggering post 363 falls, the clamping frame 42 moves.

[0073] Example 7:

[0074] like Figure 30 , 31 As shown in Figure 32, this embodiment adds a delay device 9 based on embodiment 2. After the delay, the lock cylinder does not rotate. The pins or other shaped keys inside the delay device rise up, enter the lock head body, and leave the matching of the pins and the key. During the delay period, the lock cylinder rotates, the pins leave the pin hole position of the lock head body, and the lock cylinder can continue to rotate.

[0075] Specifically, the delay device 9 is located between the clamping rod 41 and the keyhole, and includes a hook support 92, a hook 91, a pin 93, a pressure plate 95, a spring 94, and an interactive component 8. The hook support 92 is located on the side of the front end of the key and is pushed by the key 1. The upper end of the hook support 92 has a groove, and the hook 91 is placed obliquely in the groove, with the hook extending obliquely elastically. A movable pin 93 is arranged roughly parallel above the hook support 92. The front end of the pin has an energy storage spring 94, and the rear end has a protrusion. The hook 91 can hook the protrusion. The front end of the pin 93 has a bevel, and the side of the inner tumbler has a corresponding abutting bevel or a lug of the inner tumbler. In this embodiment, it is an inner square post 322, and a lug 3221 is provided on the inner square post 322. When the key... When the hook 91 is pushed against the hook support 92, the inclined surface of the hook 91 is pressed back into the hook support 92 by the pressure plate 95. The spring 94 on the pin 93 is compressed and stored by the movement of the pin. When the hook 91 is squeezed and disengaged from the hook of the pin protrusion 2, the pin 93 returns to its original position under the pressure of the spring. After a neutral delay, the pin 93 pushes against the interactive part 8. The inclined surface of the front end of the interactive part 8 pushes against the lug 3221 of the inner square post 322, causing the inner square post 322 to extend out of the lock cylinder 6. The lock cylinder 6 cannot be rotated, thus locking. When the pin 93 rotates the lock cylinder 6 during the neutral time, the inner square post 322 has left the square post hole of the lock head body 2. The inner square post 322 is restricted by the lock head body 2 within the lock cylinder 6. During the delay period, the lock cylinder 6 can be rotated to unlock.

[0076] Example 8:

[0077] like Figure 33 , 34 As shown in Figure 35, this embodiment is equipped with a time-delay locking mechanism. If the lock cylinder is not rotated within a limited time, the lock cylinder will be restricted from rotating. A time delay device 9 is arranged approximately parallel to the clamping frame. The time delay device includes a pin 93, a pressure plate 95, a hook 91, a spring 94, and a latch 96. The lock head body 2 is provided with a second recess 25. The latch 96 extends out of the second recess 25, and the lock cylinder 6 cannot rotate. The upper end of the clamping frame 41 is provided with a groove, and the hook 91 is placed obliquely in the groove. The clamping frame 41 is pushed by the key 1, and the hook 91 drags the pin 93 to move. The spring 94 is compressed and stores energy. The pressure plate 95 presses the hook 92 against one side of the clamping frame 41. The front end of the pin 93 is provided with a structure that cooperates with the latch 96, such as pushing against the inclined surface, pushing against the end face of the latch 96 that extends out of the lock cylinder 6. As the clamping frame 41 moves backward, it drives the hook 92, which in turn pulls the ejector pin 93 to compress and store energy in the spring. When the clamping frame 41 moves backward to its final position, the hook 92 is pressed by the pressure plate 95, causing it to disengage from the ejector pin 93. Within a set time, the lock cylinder 6 does not rotate, and the spring releases energy to push the ejector pin 93 to push the latch 96 out of the radius arc surface of the lock cylinder and into the recess 25 of the lock head body. When the lock cylinder 6 rotates within the set time, the recess 25 of the lock head body leaves the latch 96. Therefore, the outer end of the latch 96 is restricted by the inner diameter arc surface of the lock head body 2, and the latch 96 does not exceed the radius arc surface of the lock cylinder, allowing the lock cylinder to rotate normally.

[0078] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A conditionally decoded mechanical lock, comprising: Key, lock body, lock cylinder; The lock cylinder is also equipped with a key hole interception mechanism, a key release restriction mechanism, and a triggering mechanism; When the key enters the keyhole, it pushes the trigger mechanism, which releases the key restriction mechanism and, in conjunction with the keyhole blocking mechanism, closes the keyhole. When the keyhole is closed, the key release mechanism releases the restriction on the lock cylinder key; With the keyhole open, the key restriction mechanism restricts the movement of the key, preventing the lock cylinder from being decoded.

2. The conditionally decoded mechanical lock according to claim 1, characterized in that: The keyhole interception mechanism is located at the front end of the keyhole, or in the middle section of the keyhole, or on other keyhole channels.

3. A conditionally decoded mechanical lock according to claim 1, characterized in that: It also includes a delay device; the delay device is compressed and stored by a key or key restriction mechanism, and after the energy is stored, the delay device latch is released and the latch is delayed to the position. When the latch is in the position, the rotation of the lock cylinder in the original position is restricted or the key restriction mechanism restricts the unlocking of the key.

4. A conditionally decoded mechanical lock according to claim 3, characterized in that: The delay device is installed between the lock cylinder and the key restriction mechanism. During the backward movement of the key restriction mechanism, the key restriction mechanism drives the tow hook, which pulls the delay component to compress and store energy in the spring. When the key restriction mechanism is fully backward, the tow hook is squeezed by the trigger plate, causing the tow hook to disengage from the delay component. The latch is pushed out to the radial arc surface of the lock cylinder, which is still in its original position, and extends into the recess of the lock head body. Alternatively, the latch is pushed out to the radial arc surface of the lock cylinder before the lock cylinder has rotated, and the latch is restricted by the inner diameter arc surface of the lock head body, so the latch does not exceed the radial arc surface of the lock cylinder.

5. A conditionally decoded mechanical lock according to claim 3, characterized in that... The delay device includes a tow hook support, a tow hook, a push pin, a pressure plate, a spring, and an interactive component. The tow hook support is located on the side of the front end of the key and is pushed by the key. The upper end of the tow hook support has a groove, and the tow hook is placed obliquely in the groove. The hook extends obliquely with elasticity. A movable push pin is arranged roughly parallel above the tow hook support. The front end of the push pin has an energy storage spring, and the rear end has a protrusion. The tow hook hooks onto the protrusion. The front end of the push pin has an inclined surface, and the side of the inner tumbler has a corresponding abutting inclined surface or a lug of the inner tumbler. When the tow hook is squeezed and disengaged from the hook of the push pin protrusion, the push pin returns to its original position under the pressure of the spring. After a period of time, the push pin pushes against the interactive component, causing the inclined surface at the front end of the interactive component to push against the lug of the inner square post, causing the inner square post to extend out of the lock cylinder. The lock cylinder cannot rotate, thus locking the device.

6. A conditionally decoded mechanical lock according to claim 3, characterized in that: The lock cylinder includes multiple single-section keys and / or double-section keys and / or triple-section keys, and the key release restriction mechanism restricts the contact surfaces of the single-section keys and / or double-section keys and / or triple-section keys to match the circumference of the lock cylinder.

7. A conditionally decoded mechanical lock according to claim 1 or 3, characterized in that: The lock cylinder has a slot that is roughly parallel to the key channel. The key restriction mechanism includes a clamping frame and a push rod. The clamping frame is located in the slot, and the push rod extends into the key hole. The clamping frame is on the path of key movement. The clamping frame has a release hole and a restriction hole that match the key hole. In the release hole, the key can be matched with the key to unlock, and in the restriction hole, the key movement is restricted.

8. A conditionally decoded mechanical lock according to claim 7, characterized in that: The key restriction mechanism is an L-shaped structure rod, the push rod is one side of the L-shape, the clamping frame is the other side of the L-shape, and the push rod is located at the top of the keyhole.

9. A conditionally decoded mechanical lock according to claim 8, characterized in that: The clamping frame has a through groove in the middle, and multiple first inclined walls are provided on the wall of the through groove. The key is provided with a corresponding second inclined wall. When the clamping frame moves in the vertical direction of the ball, the first inclined wall and the second inclined wall of the key move relative to each other, and the key is moved to the release position or the limit position in the clamping frame.

10. A conditionally decoded mechanical lock according to claim 9, characterized in that... The key is a pin, a square pillar, or other shape, or a combination thereof.

11. A conditionally decoded mechanical lock according to claim 1 or 7, characterized in that: It also includes a triggering mechanism and / or a blocking mechanism, wherein the key presses against the triggering mechanism to release the blocking mechanism from obstructing the clamping mechanism.

12. A conditionally decoded mechanical lock according to claim 11, characterized in that... The blocking mechanism includes a blind hole set on the lock cylinder and parallel to the key, and a corresponding through hole provided on the clamping frame. Three trigger pins are set in the blind hole and the through hole. A spring is provided at the upper end of the trigger pin and the top of the blind hole. After the contact surface of the first trigger pin and the second trigger pin matches the bottom surface of the trigger pin hole of the clamping frame, and the contact surface of the second trigger pin and the third trigger pin matches the upper end surface of the trigger pin hole of the clamping frame, the blocking mechanism releases the restriction on the movement of the clamping frame.

13. A conditionally decoded mechanical lock according to claim 12, characterized in that... The key has a protrusion that corresponds to the bottom of the blind hole of the lock cylinder and can support the trigger pin.

14. A conditionally decoded mechanical lock according to claim 11, characterized in that... The triggering mechanism is a trigger lever, including a lifting arm and a force-receiving arm. The lifting arm and the force-receiving arm are pivotally connected to the bottom of the blind hole. Pressing the force-receiving arm inward causes the lifting arm to rise and push the first triggering column to rise. The other side of the force-receiving arm pushes against the spring, pushing the push plate of the key restriction mechanism forward and releasing the key restriction mechanism from restricting the key.

15. A conditionally decoded mechanical lock according to claim 11, characterized in that... The triggering mechanism is a triggering cam, which is pivotally connected to the bottom of the blind hole; the convex part of the cam is located at the triggering position below the blind hole, or the lower part of the cam is located at the obstruction position below the blind hole.

16. A conditionally decoded mechanical lock according to claim 1 or 3, characterized in that... The lock hole closing mechanism is a gate, which closes the lock hole from above the key. The key has a hollow structure, and the gate closes the lock hole and fills the hollow space of the key.

17. A conditionally decoded mechanical lock according to claim 1 or 3, characterized in that... The lock hole interception mechanism consists of two gates, one above the other. The lock cylinder has a connecting rod channel on the other side of the keyhole channel. The connecting rod channel is roughly parallel to the keyhole. The connecting rod is located in the connecting rod channel. One end of the connecting rod abuts against the top plate of the key restriction mechanism, and the other end abuts against the lower gate. The contact surface is a beveled abutment. The beveled surface at the end of the connecting rod faces upward, and the beveled surface slopes from high to low from the end inward.

18. A conditionally decoded mechanical lock according to claim 17, characterized in that... The lock cylinder has a connecting rod safety bar perpendicular to the connecting rod on the outside of the connecting rod. The connecting rod has an inclined groove for the connecting rod safety bar to enter. The connecting rod safety bar is two-sectioned, including an inner connecting rod safety bar and an outer connecting rod safety bar. A pressure spring is provided at the outer end of the outer safety bar. The lower end of the outer connecting rod safety bar has an inner arc surface, and the upper end of the inner connecting rod safety bar has an outer arc surface. When the outer arc surface of the outer connecting rod safety bar and the outer arc surface at the upper end of the inner connecting rod safety bar match the outer diameter arc surface of the lock cylinder, the safety bar releases the restriction on the rotation of the lock cylinder.

19. A conditionally decoded mechanical lock according to claim 16, characterized in that... A movable key seat is also provided on the outside of the gate. Inside the movable key seat are a first sub-body, a second sub-body, a toggle, and a sub-body lever. The lock cylinder has a sub-body key hole, which is roughly parallel to the key hole. A spring is provided at the upper end of the sub-body key. The lower end of the first sub-body is an inner arc surface, and the upper end of the second sub-body is an outer arc surface. The contact surface of the two is the same as the curvature of the outer edge of the lock cylinder. When the key pushes the toggle, the wave surface of the toggle pryes the first arc surface of the sub-body lever. The second arc surface of the sub-body lever moves downward at the other end of the pivot, and the second sub-body descends accordingly. When the outer arc surface of the second sub-body matches the outer edge of the lock cylinder, the movable key seat unlocks.

20. A conditionally decoded mechanical lock according to claim 16, characterized in that... The gate has an outer arc-shaped top surface that matches the outer edge of the lock cylinder and can rotate with the lock cylinder. The top of the gate has one or more longitudinal through holes, which are hexagonal, square, and circular, respectively. Correspondingly, there are hexagonal, square, and circular inner sub-bodies. An outer movable seat is provided on the top surface of the gate. The bottom surface of the outer movable seat is arc-shaped and matches the arc surface of the top surface of the gate. The outer movable seat has three through holes corresponding to the top of the gate, which are hexagonal, square, and circular, respectively. Correspondingly, there are hexagonal, square, and circular outer sub-bodies. A spring is provided above the outer sub-bodies to compress the outer and inner sub-bodies.

21. A conditional key unlocking method, wherein the lock body comprises: Key, lock body, lock cylinder; The lock cylinder also includes a key hole closing mechanism, a key release restriction mechanism, and a triggering mechanism; The steps are as follows: insert the key, push the key against the mechanism to close the keyhole, simultaneously or subsequently release the lock cylinder key restriction, decode the lock cylinder key with the key, and turn the lock cylinder to unlock the lock.

22. The unlocking method according to claim 21, characterized in that... Closing the keyhole and unlocking the key lock are accomplished by a single component working together.

23. The unlocking method according to claim 22, characterized in that... After the keyhole is closed, the lock cylinder key restriction is released via photoelectric induction.

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