A bolt control structure of a lock

Abstract

The present application relates to the technical field of lock, and particularly relates to a lock tongue control structure of a lock, which comprises a lock shell, a lock tongue, a locking swing block and a control element arranged in the lock shell, the control element is provided with a power mechanism for controlling the movement of the control element, the locking swing block is in contact with the lock tongue to lock the lock tongue, the lock tongue is provided with a front block and a rear block, the control element is arranged between the front block and the rear block, the length of the control element is less than the distance between the front block and the rear block, the swing block inclined wedge is arranged on the side of the control element close to the locking swing block, the power mechanism drives the control element to move from the front block to the rear block, the swing block inclined wedge moves to act on the locking swing block, the locking swing block stops locking the lock tongue, the control element is in contact with the rear block, the power mechanism continues to drive the control element to move to drive the lock tongue to move. The lock tongue structure is simple, safe and reliable in action, the internal parts are few and the shape is not complex, which helps to greatly reduce the processing cost of the lock.

Description

Technical Field

[0001] This invention relates to the field of lock technology, specifically to a lock tongue control structure. Background Technology

[0002] With the development of science and technology and the improvement of processing capabilities, my country has gradually become a major producer of burglarproof safes, with over 70% of the world's burglarproof safes originating from China. On April 4, 2019, the mandatory national standard GB10409-2019 "Burdenproof Safes" (hereinafter referred to as the "New National Standard") was officially released and implemented on May 1, 2020. The New National Standard clearly stipulates that the locking mechanism should not use electromagnets for driving and locking. However, most domestically produced safes use electromagnets for driving and locking, which falls far short of the requirements of the New National Standard for burglarproof locks.

[0003] Currently, a small portion of domestic safes (boxes) do not use electromagnets for driving and locking; these are all driven by motors, which have excellent performance. Most are comparable to imported products. However, because foreign electronic and mechanical anti-theft locks for safes are consistent, have the same function and installation dimensions, and are interchangeable, they have disadvantages such as larger size, more materials used, more complex structure, and higher production costs. This also affects the widespread use of these locks.

[0004] Among the many requirements of the new national standard for safe locks, the lock tongue must be able to withstand 980N axially and six reverse impacts of 50g. Currently, many domestic and foreign safe locks either fail to meet these requirements or have complex structures.

[0005] Therefore, it is necessary to develop a new type of safe lock that is as economical as an electromagnet and meets the new national standards. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned technology and provide a lock tongue control structure.

[0007] A lock tongue control structure is disclosed. The lock includes a lock housing, a lock tongue, a locking rocker block, and a control element disposed within the lock housing. The control element is equipped with a power mechanism for moving the control element. The locking rocker block abuts against the lock tongue to lock it. The lock tongue has a front stop and a rear stop. The control element is disposed between the front stop and the rear stop, and the length of the control element is less than the distance between the front stop and the rear stop. A rocker block wedge is provided on the side of the control element near the locking rocker block. The power mechanism drives the control element to move from the front stop to the rear stop. The rocker block wedge moves and stops locking the lock tongue. The control element abuts against the rear stop, and the power mechanism continues to operate the control element to move, driving the lock tongue to move.

[0008] Furthermore, the control element has an internal cavity, and one side of the control element has a support leg that extends out of the lock housing.

[0009] Furthermore, the locking swing block has a mounting hole at its center, a central shaft is mounted in the mounting hole, soft rubber sleeves are fitted to both ends of the central shaft and mounted on the lock housing, a torsion spring is provided between the locking swing block and the lock housing and fitted on the central shaft, the locking swing block is symmetrically arranged about the axis of the central shaft, and a wedge is symmetrically arranged on one side of the locking swing block about the axis of the central shaft.

[0010] Furthermore, the lock housing is provided with a limiting support for supporting the locking rocker block at the end of the locking rocker block away from the rocker block wedge.

[0011] Furthermore, it also includes an emergency unlocking mechanism, which includes a rocker arm located on the outside of the lock housing and rotating around its own center. One end of the rocker arm abuts against the side of the support leg near the front block.

[0012] Furthermore, the power mechanism includes a motor, the output end of which is connected to a rotating shaft via a gear set, a spring is sleeved on the rotating shaft, a rotating shaft pin is provided on the rotating shaft, one end of the spring is connected to a control element, and the rotating shaft pin is located within the helical gap of the spring.

[0013] Furthermore, the lock tongue has a placement cavity inside, the control element is located in the placement cavity, the front block and the rear block are respectively located at both ends of the placement cavity, the end of the rotating shaft away from the motor passes through the cavity of the control element and is rotatably connected to the lock housing, the control element does not affect the rotation of the rotating shaft, the spring and the rotating shaft pin are both located in the cavity, the lock tongue has a clearance groove at the end near the rotating shaft away from the motor to make way for the rotating shaft, the lock tongue has a locking step on the side near the locking rocker block, and a gap is provided between the lock tongue and the lock housing at the rocker block wedge for the rocker block wedge to move.

[0014] Advantages of this invention: The locking tongue structure of this invention is simple, its operation is safe and reliable, and it has few internal parts with a simple shape, which helps to greatly reduce the processing cost of the lock; This invention uses a single driving power mechanism, and by setting a "control element", the function of the "control element" is divided into two stages. The first stage completes the task of removing the restriction of the locking swing block, and the second stage completes the task of retracting the locking tongue; A foot is provided on the control element to facilitate emergency unlocking; The symmetrical design of the locking swing block of this invention effectively achieves impact resistance, and the central axis support scheme of the locking swing block of this invention makes the locking tongue of this invention have high load-bearing strength, good safety, and is simple and flexible. Attached Figure Description

[0015] Figure 1 This is an exploded view of the bolt control structure of a lock according to the present invention;

[0016] Figure 2 This is a schematic diagram of the power mechanism of the present invention;

[0017] Figure 3 This is a schematic diagram of the locking tongue of the present invention;

[0018] Figure 4 This is a schematic diagram of the locking swing block of the present invention;

[0019] Figure 5 This is a schematic diagram of the installation of the locking swing block of the present invention;

[0020] Figure 6 This is a schematic diagram of the control element of the present invention;

[0021] Figure 7 This is a schematic diagram of the rocker arm of the present invention enabling emergency unlocking;

[0022] Figure 8 This is a schematic diagram of the movement of the control element of the present invention;

[0023] Figure 9 This is a schematic diagram of the movement of the pivot pin control spring according to the present invention.

[0024] As shown in the figure: 1. Locking tongue; 2. Locking swing block; 3. Control element; 4. Power mechanism; 5. Rocker arm; 6. Lock housing; 7. Emergency key lock; 101. Front stop; 102. Rear stop; 103. Placement cavity; 104. Relief groove; 105. Locking step; 201. Mounting hole; 202. Central shaft; 203. Soft rubber sleeve; 204. Torsion spring; 205. Wedge; 301. Swing block wedge; 302. Cavity; 303. Support leg; 401. Motor; 402. Gear set; 403. Rotating shaft; 404. Spring; 405. Rotating shaft pin; 601. Limit support. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings.

[0026] A lock tongue control structure is disclosed. The lock includes a lock housing 6, a lock tongue 1, a locking rocker block 2, and a control element 3 disposed within the lock housing 6. The control element 3 is equipped with a power mechanism 4 for operating the movement of the control element 3. The locking rocker block 2 abuts against the lock tongue 1 to lock the lock tongue 1. The lock tongue 1 has a front stop 101 and a rear stop 102. The control element 3 is disposed between the front stop 101 and the rear stop 102, and the length of the control element 3 is less than the distance between the front stop 101 and the rear stop 102. The control element 3 has a rocker block wedge 301 on the side near the locking rocker block 2. The power mechanism 4 drives the control element 3 to move from the front stop 101 to the rear stop 102. The movement of the rocker block wedge 301 acts on the locking rocker block 2, and the locking rocker block 2 stops locking the lock tongue 1. The control element 3 abuts against the rear stop 102, and the power mechanism 4 continues to control the movement of the element 3, driving the lock tongue 1 to move.

[0027] Example

[0028] A lock tongue control structure, the lock includes a lock housing 6, including a lock tongue 1, a locking swing block 2, a control element 3 and an emergency unlocking mechanism disposed in the lock housing 6, the control element 3 being equipped with a power mechanism 4;

[0029] like Figure 2 As shown, the power mechanism 4 includes a motor 401. The output end of the motor 401 is connected to a rotating shaft 403 through a gear set 402. A spring 404 is sleeved on the rotating shaft 403. A rotating shaft pin 405 is provided on the rotating shaft 404. One end of the spring 404 is connected to the control element 3. The rotating shaft pin 405 is located in the helical gap of the spring 404.

[0030] like Figure 3 As shown, the latch 1 is provided with a front stop 101 and a rear stop 102, and has a placement cavity 103 inside. The front stop 101 and the rear stop 103 are respectively provided at both ends of the placement cavity 103. The latch 1 is provided with a clearance groove 104 to make way for the rotating shaft 403 at the end near the rotating shaft 403 and away from the motor 401. The latch 1 is provided with a locking step 105 on the side near the locking swing block 2.

[0031] like Figure 4 and Figure 5 As shown, the locking swing block 2 has a mounting hole 201 at its center, and a central shaft 202 is installed in the mounting hole 201. Soft rubber sleeves 203 are sleeved on both ends of the central shaft 202 and installed on the lock housing 6. A torsion spring 204 is sleeved on the central shaft 202 between the locking swing block 2 and the lock housing 6. The locking swing block 2 is symmetrically arranged about the axis of the central shaft 202. A wedge 205 is symmetrically arranged on one side of the locking swing block 2 about the axis of the central shaft 202.

[0032] like Figure 6 As shown, the control element 3 has a swing block wedge 301 on the side near the locking swing block 2, the control element 3 has a cavity 302 inside, and a support leg 303 that protrudes from the lock housing 6 on one side of the control element 3.

[0033] like Figure 7 As shown, the emergency unlocking mechanism includes a support leg 303. A rocker arm 5 with the center as the rotation center is provided on the outside of the lock housing 6. The center of the rocker arm 5 is hinged to the lock housing 6. The support leg 303 extends out of the lock housing 6. A clearance is provided on the lock housing 6 at the position where the support leg 303 extends out of the lock housing 6 for the movement of the support leg 303. One end of the rocker arm 5 abuts against the side of the support leg 303 near the wedge 301 of the swing block, and the other end is connected to an emergency key lock 7. When the power mechanism 4 fails, the lock can be unlocked by the emergency key lock 7.

[0034] like Figure 8 As shown, the lock housing 6 is provided with a limiting support 601 for supporting the locking swing block 2 at the end of the locking swing block 2 away from the swing block wedge 301.

[0035] The embodiments of the present invention are used in the following specific ways:

[0036] The motor 401 drives the rotating shaft 403 to rotate through the gear set 402. When the rotating shaft pin 405 rotates with the rotating shaft 403, it cuts into the helical gap of the driving energy storage spring 404, causing the driving energy storage spring 404 to move axially, thereby driving the movement of the control element 3.

[0037] As attached Figure 9 As shown, the curved arrow at the pivot 403 rotates in the direction of the pivot. The spring 404 moves along the pivot 403 from the left front block 101 to the right rear block 102, thereby driving the control element 3 to move to the right until the control element 3 touches the right rear block 102 of the lock tongue 1's inner placement cavity 103. Its movement distance is shown as "S" in Appendix 9. The control element 3 moves a distance of S, completing the rotation of the locking swing block 2 within this distance. The locking swing block 2 was originally stuck on the lock tongue 1 at the locking step 105. After the locking swing block 2 swings at an angle, it stops having a "locking" effect on the lock tongue 1. The energy-stored spring 404 continues to move to the right, which drives the lock tongue 1 to move to the right, that is, to make the lock tongue 1 retract back into the lock housing 6, which is the "unlocking" process.

[0038] When unlocking, in order for the bolt 1 to retract, the axial restriction of the bolt 1 by the locking swing block 2 must first be released. Compared with other unlocking methods, this invention uses the same driving mechanism and power mechanism 4. By setting a "control element 3", the function of the "control element 3" is divided into two stages. The first stage completes the removal of the restriction of the locking swing block 2, and the second stage completes the task of retracting the bolt 1. When locking, its locking process is the opposite of the unlocking process.

[0039] Because of the locking swing block 2, the lock meets the requirements of standard GB10409-2019 in application testing. The requirements are that the bolt 1 extends out of the lock housing 6, i.e., the lock is locked, and the bolt 1 can withstand an axial pressure of 980N. The force of the control element 3 driving the locking swing block 2 is very small, only a few tens of grams. Therefore, the rotation of the locking swing block 2 must be flexible. To ensure flexible rotation, gaps are left between the two ends of the locking swing block 2 and the locking step 105 and the limiting support 601, respectively. When the bolt 1 is attacked by an external force, in order to resist the external force, the locking swing block 2 bears the force of the bolt 1. One end of the locking swing block 2 abuts against the locking step 105, and the other end abuts against the limiting support 601, so there is no gap.

[0040] Regarding the changes in locking block 2 depending on whether the locking tongue 1 is subjected to external force, the details are as follows:

[0041] 1. The bolt 1 extends out of the lock housing 6. One end of the locking swing block 2 is located at the locking step 105, and the other end is located at the limiting support 601. The locking swing block 2 is in an inclined state. Figure 8 As shown in the schematic diagram in the middle left, and in the absence of external force attack, the locking tongue 1 does not exert force on the locking swing block 2, the central shaft 202 does not deform, and the radial dimensions of the two soft rubber sleeves 203 are equal.

[0042] 2. In the first stage of unlocking, by controlling component 3 to remove the restriction of locking swing block 2, bolt 1 remains in the locked state, and locking swing block 2 and bolt 1 are in a parallel state, such as... Figure 8 As shown in the schematic diagram on the right, the locking tongue 1 does not exert any force on the locking swing block 2, the central shaft 202 does not deform, and the radial dimensions of the two soft rubber sleeves 203 are equal.

[0043] 3. The bolt 1 extends out of the lock housing 6. One end of the locking swing block 2 is located at the locking step 105, and the other end is located at the limiting support 601. The locking swing block 2 is in an inclined state. Figure 8As shown in the schematic diagram on the left-middle part, under the condition of being attacked by external force, since one end of the locking swing block 2 is located on the locking step 105 to lock the bolt 1, and the limiting support 601 supports the locking swing block 2, the bolt 1 is stably locked by the locking swing block 2. The bolt 1 exerts a force on the locking swing block 2, and the central shaft 202 will deform. In order to solve the deformation problem of the central shaft 202, soft rubber sleeves 203 are set between the two ends of the central shaft 202 and the lock housing 6. When the central shaft 202 deforms, the two soft rubber sleeves 203 also deform to offset the deformation of the central shaft 202. When the external force attack is removed, the soft rubber sleeves 203 recover by their own elasticity, and the central shaft 202 returns to its original position. The deformation of the soft rubber sleeves 203 offsets the deformation of the central shaft 202, which plays a protective role for the central shaft 202, thereby ensuring the safety of the lock and extending the service life of the lock.

[0044] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A lock tongue control structure for a lock, the lock comprising a lock housing (6), characterized in that: The lock includes a bolt (1), a locking lever (2), and a control element (3) housed within a lock housing (6). The control element (3) is equipped with a power mechanism (4) for operating the movement of the control element (3). The locking lever (2) abuts against the bolt (1) to lock the bolt (1). The bolt (1) has a front stop (101) and a rear stop (102). The control element (3) is located between the front stop (101) and the rear stop (102), and the length of the control element (3) is less than that of the front stop (101). The distance between the control element (3) and the rear stop (102) is such that the control element (3) is provided with a swing block wedge (301) on the side near the locking swing block (2). The power mechanism (4) drives the control element (3) to move from the front stop (101) to the rear stop (102). The movement of the swing block wedge (301) locks the swing block (2). The locking swing block (2) stops locking the latch (1). The control element (3) abuts against the rear stop (102). The power mechanism (4) continues to operate the control element (3) to move, driving the latch (1) to move.

2. The lock tongue control structure of a lock according to claim 1, characterized in that: The control element (3) has a cavity (302) inside, and a support leg (303) protruding from the lock housing (6) is provided on one side of the control element (3).

3. The lock tongue control structure of a lock according to claim 1, characterized in that: The locking swing block (2) has a mounting hole (201) at its center. A central shaft (202) is installed in the mounting hole (201). Soft rubber sleeves (203) are sleeved on both ends of the central shaft (202) and installed on the lock housing (6). A torsion spring (204) is sleeved on the central shaft (202) between the locking swing block (2) and the lock housing (6). The locking swing block (2) is symmetrically arranged about the axis of the central shaft (202). A wedge (205) is symmetrically arranged on one side of the locking swing block (2) about the axis of the central shaft (202).

4. The lock tongue control structure of a lock according to claim 1, characterized in that: The lock housing (6) is provided with a limiting support (601) for supporting the locking swing block (2) at one end away from the swing block wedge (301).

5. The lock tongue control structure of a lock according to claim 2, characterized in that: It also includes an emergency unlocking mechanism, which includes a rocker arm (5). The rocker arm (5) is located outside the lock housing (6) and rotates around its own center. One end of the rocker arm (5) abuts against the side of the support leg (303) near the front block (101).

6. The lock tongue control structure of a lock according to claim 2, characterized in that: The power mechanism (4) includes a motor (401). The output end of the motor (401) is connected to a rotating shaft (403) through a gear set (402). A spring (404) is sleeved on the rotating shaft (403). A rotating shaft pin (405) is provided on the rotating shaft (403). One end of the spring (404) is connected to the control element (3). The rotating shaft pin (405) is located in the helical gap of the spring (404).

7. The lock tongue control structure of a lock according to claim 6, characterized in that: The latch (1) has a placement cavity (103) inside, and the control element (3) is located in the placement cavity (103). The front stop (101) and the rear stop (102) are respectively located at both ends of the placement cavity (103). The end of the rotating shaft (403) away from the motor (401) passes through the cavity (302) of the control element (3) and is rotatably connected to the lock housing (6). The control element (3) does not affect the rotation of the rotating shaft (403). The spring (404) and the pivot pin (405) are both located in the cavity (302). The end of the latch (1) near the pivot (403) away from the motor (401) is provided with a clearance groove (104) to make way for the pivot (403). The latch (1) is provided with a locking step (105) on the side near the locking rocker block (2). There is a gap between the latch (1) and the lock housing (6) at the rocker block wedge (301) for the rocker block wedge (301) to move.

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