A pin lock with a time delay function

Abstract

A pin lock with a time delay function is provided on a lock core (2), wherein a lower pin hole (13), a locking rod (5), a blocking block (7), and a positioning block (16) are provided on the lock body (1). An upper pin hole (12) and a blocking groove (8) are provided on the lock body (1). An upper pin (3) and a lower pin (4) are respectively installed in the upper pin hole (12) and the lower pin hole (13). When unlocking, the lock core (2) must be pushed inward for a certain distance so that the blocking block (7) can be moved out of the blocking groove (8) and the lock core can be rotated to unlock the lock. During the process of pushing the lock core inward, the position of the lower pin is locked by the locking rod. When the lock cannot be unlocked by technical unlocking once, the lock core must be withdrawn outward to readjust the position of the lower pin and the lock core must be pushed inward again for a second trial. After the time delay device is added to the lock, the lock core cannot be withdrawn outward immediately and must wait for a period of time before it can be withdrawn outward for a second trial unlocking.

Description

Technical Field

[0001] The present invention relates to a mechanical lock, in particular to a mechanical lock with a time delay function. Background Art

[0002] Existing pin tumbler locks with a delay function, although they can lock the pins before opening the lock, require a delay before a second opening if the first opening fails, such as the technology with patent number ZL2018210286206, but the structure is relatively complex, with many components and high manufacturing costs. Summary of the Invention

[0003] The lock of the present invention includes a lock body and a lock core. A cylindrical cavity is provided in the lock body, and a cylindrical lock core is provided in the cavity. The lock core can rotate in the lock body, and the rotation of the lock core can open the lock. A lower pin hole is provided in the lock core, and a lower pin is provided in the lower pin hole. An upper pin hole is provided in the lock body, and an upper pin is provided in the upper pin hole. A spring is provided between the upper pin and the lock body, and the spring pushes the upper pin toward the lock core. When the interface between the upper pin and the lower pin is aligned with the interface between the lock body and the lock core, the lock core can rotate in the lock body, so that the lock is opened.

[0004] A lower pin groove is provided in the axial direction of the lock core, and a locking rod is provided in the lower pin groove, and the locking rod can slide in the lower pin groove; a locking ring is provided at one end of the locking rod, and the locking ring is fixed relative to the axial direction of the lock body, and the locking ring can rotate around the axis of the lock body; when the lock core moves in the axial direction of the lock body, the locking rod can slide in the lower locking groove; convex teeth are provided on the locking rod, and convex teeth are provided on the lower pin, and when the locking rod slides in the lower locking groove, the position of the lower pin can be locked, so that the lower pin cannot move in the radial direction of the lock core.

[0005] A groove corresponding to the locking ring is provided on the lock body, and a first positioning hole is provided at a position corresponding to the locking ring on the lock body; after the locking ring is installed into the lock body together with the lock core, the positioning pin is inserted into the first positioning hole to position the locking ring at a specific cross-section of the lock body cavity. The locking ring cannot move in the axial direction, but can rotate around its axis.

[0006] A blocking groove is provided on the lock body, and a blocking block is provided on the lock core. When the lock is locked, the blocking block is in the blocking groove, the lock core cannot rotate in the lock body, and the lock cannot be opened. When unlocking, the lock core needs to be moved axially a certain distance in the lock body so that the blocking block is out of the blocking groove and the lock core can rotate in the lock body.

[0007] A keyhole is provided in the lock core. When the correct key is inserted into the keyhole, the key can push the upper pin and the lower pin to the correct position; a positioning block is provided on the lock core at at least one lower pin. Only after the lower pin is completely lifted by the key can the lock core slide axially in the lock body; when unlocking, the key pushes the lock core inward; a spring is provided at the corresponding position of the lock core, and the spring pushes the lock core outward.

[0008] The cross-section of the middle section of the lower pin is larger than that of the lower section, and also larger than that of the upper section. The length of the lower section of all lower pins is exactly the same, and the length of the middle section of all lower pins is exactly the same. The middle section of the lower pin will be restricted by the locking rod and the lower pin hole when moving, and the range of movement of all lower pins is exactly the same.

[0009] The upper pin is wider than the lower pin in the axial direction of the lock core. When the lock core moves inward so that the lock core can rotate in the lock body, the lower pin and the upper pin still partially overlap, and the lower pin can support the upper pin. The part of the upper pin that overlaps with the lower pin is made narrower to prevent the upper pin from contacting the convex teeth of the locking rod when entering the locking rod; when the lock core is pushed inward until it can rotate in the lock body, the lock core is blocked by the locking ring and cannot continue to be pushed inward, so that the upper pin and the lower pin will not separate when the lock core is pushed inward.

[0010] When the correct key is fully inserted into the keyhole, the upper and lower pins are in the correct positions. Continue to push the key to move the lock core inward in the lock body. When the lock core moves, the lower pin moves with the lock core. The locking rod is fixed relative to the axial direction of the lock body, the lower pin is locked in position by the locking rod, and the blocking block moves out of the blocking groove. The lock core can be rotated in the lock body to open the lock. When an incorrect key is inserted into the keyhole, as long as the lower pin at the positioning block is lifted, the lock core can move inward in the lock body, and the blocking block can be disengaged from the blocking groove. When the other pins are not in the correct position, the lock core cannot be rotated and the lock cannot be opened.

[0011] Furthermore, a delay device is installed on the lock. After the lock fails to be opened technically once, the lock cylinder is pushed inward for a certain distance. The lock cylinder cannot return to its original position within a period of time. The lower pin is always in the locked state of the locking rod, and the lower pin cannot be operated. It is necessary to wait for a period of time before the lock cylinder can return to its original position and the lower pin can be operated again to open the lock for the second time. This can effectively extend the time for technically opening the lock.

[0012] A check block is provided on the lock core, a check pin is provided on the lock body corresponding to the check block, and a control pin is provided on the lock body corresponding to the check pin. When the lock core is pushed inward, the check block can push the control pin so that the control pin releases the control of the check pin, and the check pin can move toward the check block to prevent the lock core from moving outward and returning to its original position; a second reset block is provided on the lock core, and when the key can open the lock normally, the second reset block can push the check pin so that the check pin releases the obstruction of the check block; the inclined surface provided on the check pin allows the check pin to be controlled by the control pin again under the push of the second reset block.

[0013] When the lock is technically opened, when the lock core cannot be opened after being pushed inward, the lock core cannot rotate, and the second reset block cannot reset the check pin. At this time, a delay device is required to reset the check pin. A reset ring is provided on the lock body, and the reset ring can rotate in the lock body. A first reset block is provided on the reset ring. When the reset ring rotates, the first reset block can push the check pin so that the check pin is separated from the check block and is controlled by the control pin again; a tooth is provided on the reset ring, and a reset rod is provided on the lock body. A shift block is provided on the reset rod. The rotation of the reset rod can shift the reset ring through the shift block. The reset rod is provided with a centrifugal block, which is connected to the shift block. The shift block can slide on the reset rod. When the reset rod rotates at a higher speed, the centrifugal block moves under the action of centrifugal force. The movement of the centrifugal block can drive the shift block to move, and the movement of the shift block prevents the shift block from turning the reset ring to rotate; one end of the reset rod is at the reset ring, and the other end leads to the lock body. A groove is provided on the outer end of the reset rod, which can be used to rotate the reset rod by a special tool or a common tool; the reset rod must turn the reset ring at a lower speed to reset the check pin to achieve the purpose of delay.

[0014] The reset ring is provided with a section without edge teeth. When the shift block shifts the reset ring, when the shift block moves to a position without convex teeth, the check pin is pushed to reset. A reset column is provided on the reset ring corresponding to the check block, and an inclined surface is provided on the reset column. When the lock cylinder moves outward to reset, a part of the check block moves to the bottom of the check pin. When the check block moves outward again, the check block can make the reset ring rotate an angle through the reset column, so that the first reset block rotates to a position where it cannot block the check pin from moving toward the check block, so that the shift block is in a position with edge teeth on the reset ring.

[0015] A spring is provided between the control pin and the lock body. When the control pin is not pushed by the check block, the control pin can move toward the direction of the check pin. A vertical rod is provided on the control pin, and a spring piece is provided between the control pin and the lock body. When the lock core rotates, when the check block passes through the control pin vertical rod, the control pin vertical rod can rotate. After the check block is reset, the control pin can be reset under the action of the spring piece.

[0016] Furthermore, when the lock is used in a place with a handle, a reset ring and a reset rod are no longer required. A delay rod is provided on the lock body, and the delay rod is provided with an upper rod and a lower rod. The upper rod is provided with an inclined surface and is provided at the check pin. The upper rod moves toward the check pin to lift the check pin, so that the check pin releases the obstruction of the check block; the lower rod of the delay rod can be inserted into the lock core, and a hole for inserting the lower rod is provided on the lock core. When the upper rod lifts the check pin, the lower rod is inserted into the lock core, and after the upper rod is separated from the check pin, the lower rod is withdrawn from the lock core. When the lower rod is inserted into the lock core, it can prevent the lock core from moving outward.

[0017] A delay slot is provided on the delay rod, and a delay device is provided at the corresponding position of the delay slot. The delay device is similar to a mechanical timer on a washing machine. The delay device can rotate an angle under the action of an external force. After the external force is lost, the delay device can reverse and exert a force on the outside world. A dial rod is provided on the delay device, and the delay device dial rod can move freely for a distance in the delay slot. When the delay device rotates under the action of an external force, the delay device dial rod can push the delay rod to move toward the check pin, and the lower rod of the delay rod is inserted into the lock core; the upper rod of the delay rod pushes the check pin out of the check block, pushing the check pin to a position that can be controlled by the control pin. The check block can be withdrawn outward for a distance along with the lock core, and the check pin and the check block partially overlap, and the lock core is blocked by the lower rod of the delay rod and cannot continue to withdraw outward; after the delay device loses external force, the delay device begins to reverse, and the delay rod cannot be moved in the previous stage of the delay device reversal. After a period of time, the delay device starts to drive the delay rod, first the upper rod of the delay rod is withdrawn from the check pin, and then the lower rod of the delay rod is withdrawn from the lock core, and the lock core can be completely withdrawn outward; a handle shaft is provided at the corresponding position of the delay device, and a connecting rod is provided between the handle shaft and the delay device, and the rotation of the handle shaft can rotate the delay device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of the lock body;

[0019] Figure 2 A three-dimensional diagram of the lock cylinder;

[0020] Figure 3 It is a three-dimensional diagram of the next marble;

[0021] Figure 4 is a three-dimensional diagram of a positioning pin;

[0022] Figure 5 A three-dimensional diagram of the marbles;

[0023] Figure 6 A three-dimensional view of the lock body cut through the first positioning hole;

[0024] Figure 7 This is a three-dimensional view of the lock body cut through the upper pin hole;

[0025] Figure 8is a perspective view of a locking lever;

[0026] Figure 9 This is a three-dimensional diagram of the lock rod and lock core, with parts of the lock rod and lock core removed;

[0027] Figure 10 This is an exploded view of the lock body, lock cylinder, and locking rod;

[0028] Figure 11 A three-dimensional diagram showing the lock cylinder and locking rod being installed in the lock body;

[0029] Figure 12 A three-dimensional view of the lock body of the second embodiment;

[0030] Figure 13 It is a three-dimensional diagram of the next marble;

[0031] Figure 14 A three-dimensional diagram of the stop-sale;

[0032] Figure 15 A three-dimensional view of the lock body partially cut away from the second positioning hole;

[0033] Figure 16 is a perspective view of a control pin;

[0034] Figure 17 It is a three-dimensional diagram of the secondary lock body;

[0035] Figure 18 A perspective view of the control pin being installed on the secondary lock body;

[0036] Figure 19 is a stereogram of the reset ring;

[0037] Figure 20 is a perspective view of the reset rod;

[0038] Figure 21 It is a three-dimensional diagram of the reset rod when it is at rest;

[0039] Figure 22 This is a three-dimensional diagram of the reset rod rotating at high speed;

[0040] Figure 23 A three-dimensional diagram showing the reset rod, reset ring, and check pin being installed on the lock body;

[0041] Figure 24 for Figure 23 A three-dimensional diagram of the control pin being installed;

[0042] Figure 25 It is a three-dimensional diagram of the secondary lock cylinder;

[0043] Figure 26 for Figure 24 Three-dimensional view after installing the secondary lock cylinder;

[0044] Figure 27 for Figure 26 A three-dimensional diagram of installing the secondary lock body;

[0045] Figure 28 for Figure 27 A stereogram of the other end;

[0046] Figure 29 is a schematic diagram of a third embodiment;

[0047] Figure 30 is a schematic diagram of a third embodiment;

[0048] Figure 31 is a cross-sectional view of the lock;

[0049] Figure 32 、 33 This is a diagram showing the coordination between the locking rod and the upper and lower pins;

[0050] 1-lock body, 2-lock core, 3-upper pin, 4-lower pin, 5 locking rod, 6-locking ring, 7-blocking block, 8-blocking groove, 9-locating pin, 10-first positioning hole, 11-keyhole, 12-upper pin hole, 13-lower pin hole, 14-upper pin groove, 15 lower pin groove, 16-locating block, 17-check block, 18-check pin, 19-control pin, 20-spring, 21-reset ring, 22-first reset block, 23-reset column, 24-reset rod, 25-shift block, 26-centrifugal block, 27-second reset block, 28, second positioning hole, 29, check pin hole, 30-reset rod hole, 31-secondary lock body, 32-secondary lock core, 33-delay rod, 34-delay groove, 35-delay device, 36-connecting rod, 37-handle shaft, 38-control pin hole. DETAILED DESCRIPTION

[0051] like Figure 1 As shown, a cylindrical cavity is provided in the lock body 1, a plurality of upper pin holes 12 are provided in the radial direction of the outer wall of the lock body 1, and an upper pin groove 14 is provided axially inside the upper pin hole 12 of the lock body 1; a blocking groove 8 is provided on the lock body 1, and a plurality of first positioning holes 10 are provided in the radial direction of the lock body 1; a groove for mounting a locking ring 6 is provided in the lock body 1, and the outer side of the lock body 1 may be circular or of other shapes.

[0052] like Figure 2 As shown, a plurality of lower pin holes 13 are provided on the lock cylinder 2, a key hole 11 is provided in the axial direction of the lock cylinder 2, a lower pin groove 15 is provided in the axial direction at the lower pin hole 13 of the lock cylinder 2, a positioning block 16 is set at the end of the lower pin hole 13, and a blocking block 7 is provided on the lock cylinder 2.

[0053] like Figure 3As shown, the cross-sectional area of ​​the lower section of the lower pin 4 is smaller and can be set to a circular shape, the cross-sectional area of ​​the middle section is larger, the cross-sectional area of ​​the upper section is smaller than that of the middle section, and the upper section is provided with convex teeth; the lengths of the lower sections of all the lower pins 4 are exactly the same, the lengths of the middle sections of all the lower pins 4 are exactly the same, and the lengths of the upper sections of all the lower pins 4 are different.

[0054] like Figure 4 Shown is a perspective view of the positioning pin 9.

[0055] like Figure 5 Shown is a perspective view of the upper pin 3, wherein a portion thereof is made narrower.

[0056] like Figure 6 As shown, it is a three-dimensional view of the lock body 1 after being cut at the cross section of the first positioning holes 10, wherein the two first positioning holes 10 are installed with positioning pins 9; the positioning pins 9 can position the locking ring 6.

[0057] like Figure 7 As shown, it is a three-dimensional view of the lock body 1 after being cut at the cross section of the upper pin holes 12, wherein the upper pins 3 are installed in the two upper pin holes 12, and the upper pin grooves 14 are provided at the ends of the upper pin holes 12.

[0058] like Figure 8 The figure shows a three-dimensional view of the locking rod 5. A convex tooth is provided on the inner side of the locking rod 5, which engages with the convex tooth of the lower pin 4. The locking rod 5 is inserted into the lower pin groove 15 of the lock cylinder 2. The locking rod 5 can slide in the lower pin groove 15. When the locking rod 5 slides, it can lock the lower pin 4 and also release the lock of the lower pin 4. Several groups of locking rods 5 are connected by a locking ring 6.

[0059] When the lower pin 4 is pushed to the maximum extent in the direction of the locking rod 5, the upper section of the lower pin 4 will enter the upper pin groove 14 and cannot contact the lock body 1; when the lower pin 4 is not subjected to external force, the upper pin 3 can enter the middle of the locking rod 5 and does not contact the lock cylinder 2. When the lock cylinder 2 does not rotate, the upper pin 3 cannot contact the locking rod 5.

[0060] like Figure 9 As shown, the lower pin 4 is installed in the lower pin hole 13, and the locking rod 5 is inserted into the lower pin groove 15. After the locking rod 5 and the locking ring 6 are installed in the lock core 2, the blocking block 7 is installed on the lock core 2.

[0061] like Figure 10 As shown, the locking rod 5 is moved to the right and installed into the lock core 2, and then the lock core 2 and the locking rod 5 are installed into the lock body 1; the lower pin 4 should be installed in the lock core 2, and the lower pin 4 is not shown in the figure.

[0062] like Figure 11As shown, after the lock cylinder 2 is installed into the lock body 1, the blocking block 7 enters the blocking groove 8; the positioning pin 9 is installed in the first positioning hole 10, and a spring is provided between the positioning pin 9 and the lock body; the upper pin 3 is installed in the upper pin hole 12, and a spring is provided between the upper pin 3 and the lock body 1.

[0063] like Figure 13 As shown, the middle section of the lower pin 4 is cylindrical, and the lower section and the middle section of the lower pin 4 can be cylindrical or square, or other shapes that are easy to process.

[0064] like Figure 31 The figure is a cross-sectional view of the positions of the upper pin 3 and the lower pin 4. The figure shows a situation where the lower pin 4 is provided in a radial direction of the lock core 2.

[0065] like Figure 32 、 33 As shown, the main body of the upper pin 3 is wider, and the portion between the protruding teeth of the locking rod 5 is narrower. After the lower pin 4 moves to the left with the lock cylinder 2, the upper pin 4 overlaps with the narrower portion of the upper pin 3.

[0066] Example 2

[0067] On the basis of Example 1, a delay device is added. When the lock cylinder 2 cannot be opened after being pushed inward, the lock cylinder 2 cannot be returned outward immediately.

[0068] like Figure 12 As shown, a second positioning hole 28 , a check pin hole 29 , and a reset rod hole 30 are additionally provided on the lock body 1 ; and a groove for installing the reset ring 21 is provided on the lock body 1 .

[0069] Figure 14 The stop pin 18 is shown, and a slope is provided on the stop pin 18 .

[0070] like Figure 15 The check pin 18 is inserted into the check pin hole 29 , and the positioning pin 9 is inserted into the second positioning hole 28 .

[0071] like Figure 16 Shown is a control pin 19, on which an inclined surface and a vertical rod are provided.

[0072] like Figure 17 As shown, a control pin hole 38 and a blocking groove 8 are provided on the secondary lock body 31;

[0073] like Figure 18As shown, when the control pin 19 is installed in the control pin hole 38, a spring 20 is provided on the secondary lock body 31, and a spring is provided between the secondary lock body 31 and the control pin 19, so that the control pin 19 can move axially in the control pin hole 38; when the control pin upright is subjected to external force, the control pin 19 can rotate around the axis of the control pin hole 38, and when the control pin upright loses the external force, the control pin 19 returns to its original position under the action of the spring 20; a bevel is provided on each of the check pin 18 and the control pin 19, or one of them is provided with a bevel.

[0074] like Figure 19 As shown, the reset ring 21 is provided with edge teeth, a first complex block 22, and a reset column 23. There is a section without edge teeth on the outer edge of the reset ring 21; and an inclined surface is provided on the reset column 23.

[0075] like Figure 20-22 As shown, a groove is provided at one end of the reset rod 24, and the groove can be moved by using a tool to rotate the reset rod 24; a shift block 25 is provided on the reset rod 24, and the shift block 25 can rotate with the reset rod 24 or slide in the axial direction of the reset rod 24; a centrifugal block 26 is provided on the reset rod 24, and the centrifugal block 26 is mounted on the reset rod 24 by a shaft, and the centrifugal block 26 is connected to the shift block 25, and a spring is provided between the shift block 25 and the reset rod 24; as shown Figure 22 As shown in FIG, when the reset rod 24 rotates at a high speed, the center of gravity of the centrifugal block 26 will be away from the axis of the reset rod 24, and the centrifugal block 26 will drag the shift block 25 to move a distance; Figure 21 As shown, when the reset rod 24 rotates at a lower speed or stops, the shift block 25 returns to the initial position under the action of the spring.

[0076] like Figure 23 As shown, the reset ring 21 is installed in the lock body 1, the reset rod 24 and the shift block 25 are installed in the reset rod hole 30, and the check pin 18 is installed in the check pin hole 29.

[0077] like Figure 24 As shown, in Figure 23 The control pin 19 is installed on the basis of the auxiliary lock body 31, and the auxiliary lock body 31 is hidden in this figure.

[0078] like Figure 25 As shown, a blocking block 7 , a check block 17 and a second reset block 27 are provided on the secondary lock core 32 .

[0079] like Figure 26 Shown in Figure 24 The auxiliary lock core 32 is installed on the basis of the lock core 1, and the auxiliary lock core 32 is combined with the lock core 1 into a whole. The auxiliary lock core 32 rotates and moves axially together with the lock core 1.

[0080] like Figure 27 Shown is Figure 26 The auxiliary lock body 31 is shown on the basis of FIG. 1 , and the auxiliary lock body 31 is fixed together with the lock body 1 .

[0081] like Figure 28 The other end of the lock is shown. This figure shows the state after the lock core 2 is pushed inward. After the lock is locked, a tool can be used to rotate the reset rod 24 to reset the check pin 18, so that the lock core 2 can be withdrawn outward for the next unlocking.

[0082] The edge teeth on the reset ring 21 can be configured such that one side coincides with the radius of the reset ring 21 and the other side is configured as an inclined surface. When the shifting block 25 shifts the reset ring 21 , the reset ring 21 can only rotate in one direction.

[0083] Example 3: This example is applicable to a lock with a handle. Based on Example 2, the reset ring 21 and the reset rod 24 are no longer required. Figure 29 As shown, a delay rod 33 is provided at the corresponding position of the lock cylinder 2, a delay groove 34 is provided on the delay rod 33, a delay device 35 is provided at the corresponding position of the delay groove 34, a handle shaft 37 is provided at the corresponding position of the delay device 35, and a connecting rod 36 is provided between the delay device 35 and the handle shaft 37; an upper rod and a lower rod are provided on the delay rod 33, the upper rod is provided at the corresponding position of the check pin 18, an inclined surface is provided on the upper rod, and the upper rod moves toward the check pin 18 to lift the check pin 18; A hole is provided on the lock core 2, and the lower rod of the check pin 18 can be inserted into the hole of the lock core 2. After the lower rod is inserted into the lock core 2, the lock core 2 can be partially withdrawn outward. After the check pin 18 partially overlaps with the check block 17, the lock core 2 can no longer be completely withdrawn outward, and the lower pin 4 is still in a locked state; the lower rod is inserted into the lock core 2 before the upper rod lifts the check pin 18, and the lower rod can be pulled out of the lock core 2 only after the upper rod is disengaged from the check pin 18.

[0084] In fact, the upper rod of the delay rod 33 is in front of or behind the check pin 18, and a protrusion is provided in front of or behind the check pin 18. The upper rod of the delay rod 33 pushes the protrusion of the check pin 18 to disengage the check pin 18 from the check block 17; the check block 17 is below the check pin 18.

Claims

1. A pin lock with a time delay function, comprising a lock body (1) and a lock core (2), wherein a cylindrical cavity is provided in the lock body (1), a cylindrical lock core (2) is provided in the cylindrical cavity, and the lock core (2) can rotate in the lock body (1), a plurality of upper pin holes (12) are provided on the lock body (1), an upper pin (3) is provided in the upper pin hole (12), a spring is provided between the upper pin (3) and the lock body (1), a plurality of lower pin holes (13) are provided in the lock core (2), a lower pin (4) is provided in the lower pin hole (13), locking rods (5) are provided on both sides of the lower pin (4), convex teeth are provided on both sides of the lower pin (4) and on the locking rod (5), and a key hole (11) is provided on the lock core (2); the characteristics are: An upper pin groove (14) is provided on the lock body (1) corresponding to the upper pin hole (12), a blocking groove (8) is provided on the lock body (1), a blocking block (7) is provided on the lock core (2), and a positioning block (16) is provided on the lock core (2) at at least one lower pin hole (13), so that the lock core (2) can slide inward and outward in the lock body (1); A locking ring (6) is provided at one end of the locking rod (5), a groove and a first positioning hole (10) are provided on the lock body (1) corresponding to the locking ring (6), and a positioning pin (9) is provided in the first positioning hole (10); The cross section of the middle section of the lower pin (4) is larger than the cross sections of the lower section and the upper section; a portion of the cross section of the upper pin (3) is narrower than the main section; A check block (17) is provided on the auxiliary lock core (32), a check pin (18) is provided on the lock body corresponding to the check block (17), and a control pin (19) is provided on the auxiliary lock body (31) corresponding to the check pin (18). When the auxiliary lock core (32) is pushed inward, the check block (17) can push the control pin (19) so that the control pin (19) releases the control of the check pin (18), and the check pin (18) can move toward the check block (17) to prevent the auxiliary lock core (32) from moving outward and returning to its original position. A second reset block (27) is provided on the auxiliary lock core (32). When the key can normally open the lock, the second reset block (27) can push the check pin (18) so that the check pin (18) releases the obstruction of the check block (17). The inclined surface provided on the check pin (18) allows the check pin (18) to be pushed by the second reset block (27) so that the check pin (18) is controlled by the control pin (19) again.

2. The pin tumbler lock with a time delay function according to claim 1, characterized in that: When the lock is technically opened, the lock cylinder (2) cannot be opened after being pushed inward, the lock cylinder (2) cannot rotate, and the second reset block (27) cannot reset the check pin (18). At this time, a delay device is required to reset the check pin (18). A reset ring (21) is provided on the lock body (1). The reset ring (21) can rotate in the lock body. A first reset block (22) is provided on the reset ring (21). When the reset ring (21) rotates, the first reset block (22) can push the check pin (18) so that the check pin (18) is separated from the check block (17) and is reset. The lock body (1) is controlled by a control pin (19); a reset ring (21) is provided with an edge tooth, a reset rod (24) is provided on the lock body (1), a shift block (25) is provided on the reset rod (24), and the rotation of the reset rod (24) can shift the reset ring (21) through the shift block (25); a centrifugal block (26) is provided on the reset rod (24), and the centrifugal block (26) is connected to the shift block (25). The shift block (25) can slide on the reset rod (24). When the reset rod (24) rotates at a high speed, the centrifugal block (26) generates movement under the action of centrifugal force. The movement of the centrifugal block can drive the shift block (25) to move, and the movement of the shift block (25) prevents the shift block (25) from shifting the reset ring (21) to rotate; one end of the reset rod (24) is at the reset ring (21); the reset rod (24) must shift the reset ring (21) at a lower speed to reset the check pin (18) to achieve the purpose of delay; the reset ring (21) is provided with a section without edge teeth, and when the shift block (25) shifts the reset ring (21), when the shift block (25) moves to a position without convex teeth, the check pin (18) is pushed to reset, and the check pin (18) is reset at the check ring. A reset column (23) is provided on the reset ring (21) corresponding to the block (17), and an inclined surface is provided on the reset column (23). When the lock core moves outward to reset, a part of the check block (17) moves to the bottom of the check pin (18). When the check block (17) moves outward again, the check block (17) can rotate the reset ring (21) by an angle through the reset column (23), so that the first reset block (22) is rotated to a position where the check pin (18) cannot be blocked from moving toward the check block (17), so that the shift block (25) is located at a position where the reset ring (21) has an edge tooth.

3. The pin tumbler lock with a time delay function according to claim 2, characterized in that: A spring is provided between the lock body (1) and the check pin (18), and a spring and a spring sheet are provided between the auxiliary lock body (31) and the control pin (19).

4. The pin tumbler lock with a time delay function according to claim 2, characterized in that: A groove and a second positioning hole (28) are provided on the lock body (1) corresponding to the reset ring (21), and a positioning pin (9) is set in the second positioning hole (28).

5. The pin tumbler lock with a time delay function according to claim 2, characterized in that: A groove is provided at the outer end of the reset rod (24).

6. The pin tumbler lock with a time delay function according to claim 1, characterized in that: A delay rod (33) is provided at a position corresponding to the lock core (2), an upper rod, a lower rod and a delay groove (34) are provided on the delay rod (33), an inclined surface is provided on the upper rod corresponding to the check pin (18), a hole is provided on the lock core (2), and a lower rod is provided at a position corresponding to the hole; a delay device (35) is provided at a position corresponding to the delay groove (34), a handle shaft (37) is provided at a position corresponding to the delay device (35), and a connecting rod (36) is provided between the delay device (35) and the handle shaft (37).

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