Safe anti-disassembly seal with multifunctional locking function

Abstract

The invention discloses a safe anti-disassembly seal with a multifunctional locking function, belongs to the technical field of seals, and solves the problem that the safety of the seal is poor. According to the technical scheme, the safe anti-disassembly seal mainly comprises a shell, a seal body and an ink returning pad, and the shell is provided with a first mounting cavity and a first mounting opening communicated with the first mounting cavity; the insertion end of the seal is provided with a second mounting cavity and a second mounting opening communicated with the second mounting cavity, the first mounting cavity is provided with a movably-mounted locking piece and a driving piece used for driving the locking piece to move, the locking piece is driven by the driving piece to have a first position, a second position and a third position, and when the locking piece is at the first position, the locking piece is driven by the driving piece to move. When the locking piece is at the first position, the seal is allowed to be separated from the first mounting cavity, the ink return pad is allowed to be separated from the second mounting cavity, when the locking piece is at the second position, the seal is allowed to be separated from the first mounting cavity, the ink return pad is locked in the second mounting cavity, and when the locking piece is at the third position, the seal is locked in the first mounting cavity, and the ink return pad is locked in the second mounting cavity. The safety of the seal is improved.

Description

Technical Field

[0001] The invention relates to the field of seals, in particular to a safety anti-disassembly seal with a multifunctional lock. Background Art

[0002] Under the requirements of compliance management and digital transformation, the physical seals of enterprises and institutions are gradually managed by intelligent seal control equipment. Intelligent seal control equipment is similar to a small safe or a water cup. Physical seals are placed in the equipment for management and control, and they must meet multiple business requirements of convenience, versatility and security. Among them, the seal is also equipped with an ink return pad, which is used to provide ink and ensure the clear stamping effect of the seal. Existing technologies such as the smart seals disclosed in invention patents CN111572223A and CN109624530A only realize the anti-disassembly function between the seal and the shell to prevent the seal from being illegally used. It lacks the function of locking the ink return pad, and cannot play a multiple locking function, and has poor security. Summary of the invention

[0003] The purpose to be achieved by the present invention is to provide a safety anti-tampering seal with a multifunctional lock, which solves the problem of poor safety of seals in the prior art and improves the safety of the seal.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a safety anti-disassembly seal with a multifunctional lock, comprising a shell, a seal and an ink return pad, the ink return pad and the seal are detachably connected, the seal and the shell are detachably connected, the shell is provided with a first installation cavity and a first installation port connected to the first installation cavity, the seal is inserted and installed in the first installation cavity through the first installation port, the insertion end of the seal is provided with a second installation cavity and a second installation port connected to the second installation cavity, the ink return pad is inserted and installed in the second installation cavity through the second installation port, the first installation cavity is provided with a movably installed locking member and a driving member for driving the locking member to move, the locking member is driven by the driving member to have a first position, a second position and a third position, when the locking member is in the first position, the seal is allowed to detach from the first installation cavity and the ink return pad is allowed to detach from the second installation cavity, when the locking member is in the second position, the seal is allowed to detach from the first installation cavity and the ink return pad is locked in the second installation cavity, when the locking member is in the third position, the seal is locked in the first installation cavity and the ink return pad is locked in the second installation cavity at the same time.

[0005] After adopting the above technical scheme, the present invention has the following advantages: three different locking states of the seal and the ink return pad are realized through a single driving member, and the operator does not need to operate multiple complex mechanisms separately to realize the different locking states of the seal and the ink return pad, but only needs to use a single driving member, thereby improving the flexibility and safety of the seal use and improving work efficiency. In the first position, it allows the seal to be detached from the shell, and also allows the ink return pad to be detached from the seal, so as to adapt to different seal usage scenarios as much as possible. When the locking member is in the second position, it allows the seal to be taken out of the shell, but will lock the ink return pad in the seal, so as to avoid the ink return pad being removed or replaced separately, and to eliminate the risk of illegal elements taking advantage of the loopholes of the ink return pad to use the seal illegally as much as possible, building a double line of defense for the safety of seal use, and ensuring the safety of the ink supply and the consistency of the stamping effect as much as possible. When the locking member is in the third position, the seal and the ink return pad are firmly locked at the same time, providing a higher level of security protection, preventing unauthorized operation, and further enhancing the overall security.

[0006] Furthermore, a first limit member is provided on the ink return pad, and a second limit member is provided on the shell. When the locking member is in the first position, the locking member is separated from the first limit member and the second limit member at the same time to realize the unlocking between the seal, the shell and the ink return pad. When the locking member moves from the first position to the second position, the locking member cooperates with the first limit member to lock the ink return pad in the second mounting cavity. When the driving member continues to drive the locking member to move to the third position, the locking member cooperates with the second limit member to lock the seal in the first mounting cavity and the ink return pad in the second mounting cavity.

[0007] By adopting the above technical solution, the first limiter on the ink return pad and the second limiter on the housing cooperate with the different position states of the locking member to realize the precise step-by-step locking of the seal and the ink return pad. When the locking member is in the first position, the three are completely unlocked; when the locking member moves to the second position, the locking member and the first limiter work together to accurately lock only the ink return pad, and the seal can be taken out as needed, preventing the ink return pad from being accidentally touched or maliciously tampered with during operations such as seal maintenance as much as possible, and ensuring the safety of the ink supply system; when the locking member is in the third position, the locking member and the second limiter work together to firmly lock both the seal and the ink return pad, eliminating any risk of illegal disassembly and replacement as much as possible, and setting up layers of defense. The first limit piece and the second limit piece give the locking piece a clear position so that it can only switch between positions according to the preset safety path. For example, if the operator mistakenly operates the driving piece and tries to forcibly unlock it when the seal should not be taken out, the locking piece is restricted by the second limit piece at this time and the seal unlocking condition cannot be met, effectively avoiding seal management accidents caused by human negligence and ensuring that every seal operation is strictly compliant.

[0008] Furthermore, the first limiting member includes a limiting groove staggered with the direction of the return mold pad entering and exiting the second installation port, the second limiting member includes a limiting hole, the locking member includes a disc, a first transmission shaft and a second transmission shaft, the disc and the output shaft of the driving member are fixedly connected, the two ends of the first transmission shaft are respectively hinged to the disc and the second transmission shaft, the second transmission shaft is provided with a first locking tongue arranged along the radial direction of the second transmission shaft and a second locking tongue arranged along the axial direction of the second transmission shaft, the first locking tongue can be extended into the limiting groove staggered with the direction of the return mold pad entering and exiting the second installation port to lock the ink return pad and the seal, and the second locking tongue can be extended into the limiting hole to lock the seal and the shell.

[0009] By adopting the above technical solution, the disc is fixedly connected to the output shaft of the driving member, which ensures the precise motion control of the locking member as much as possible. When the disc rotates, it transmits motion through the first transmission shaft and the second transmission shaft, so that the first lock tongue and the second lock tongue can extend into or out of the corresponding limit members more accurately. The locking member can switch smoothly between the three positions. For example, from a fully unlocked state to only locking the ink return pad, it is only necessary to drive the disc to rotate a certain angle so that the first lock tongue moves out of the limit groove. At this time, the second lock tongue disengages from the limit hole, and the seal and the ink return pad can be taken out freely; then to a fully locked state, continue to rotate the disc, and the second lock tongue slides into the limit hole. The operation is simple and the mode switching is fast, which meets the needs of various seal use and maintenance scenarios.

[0010] Furthermore, the ink return pad is also provided with an avoidance groove which is arranged parallel to the direction of the ink return pad entering and exiting the second installation port, the limit groove is connected to the limit groove, and when the locking piece is in the first position, the first lock tongue is located in the avoidance groove.

[0011] By adopting the above technical solution, the avoidance groove parallel to the entry and exit direction of the ink return pad provides an unobstructed channel for the entry and exit movement of the ink return pad. When the first lock tongue is located in the avoidance groove, the first lock tongue will not hinder the movement of the ink return pad when the ink return pad enters and exits the second installation port, ensuring that the ink return pad can be smoothly installed and disassembled.

[0012] Furthermore, two of the first transmission shaft and the second transmission shaft are provided, and the two first transmission shafts are respectively located on both sides of the disc, and two of the limiting grooves and the limiting holes are provided.

[0013] Using the above technical solution, the two first transmission shafts are located on both sides of the disc, and cooperate with two limit grooves and two limit holes to provide a double locking point, which not only enhances the locking stability between the ink return pad and the seal, and between the seal and the shell, but also greatly reduces the risk of failure of a single locking point.

[0014] Furthermore, a third limiting member is provided on the seal. When the locking member is in the first position, the locking member and the third limiting member are separated to realize unlocking between the locking member and the seal. When the locking member is in the second position and the third position, the locking member and the third limiting member cooperate to lock the locking member on the seal.

[0015] By adopting the above technical solution, the cooperation between the locking member and the third limiting member enhances the fixation of the locking member itself and reduces the risk of accidental unlocking due to external impact or vibration.

[0016] Furthermore, the third limiting member includes a through hole for the second locking tongue to pass through, and when the seal and the housing are assembled in place, the through hole and the limiting hole are connected.

[0017] With the above technical solution, when the seal is assembled with the housing, the through hole is connected with the limiting hole, providing a more accurate positioning channel for the second lock tongue, so that during the locking operation, the second lock tongue can move along the preset path, avoiding the lock tongue and the limiting structure from getting stuck or misaligned due to path deviation, and ensuring that each locking action can be completed accurately and smoothly as much as possible, greatly improving the mechanical precision of the locking device and ensuring the long-term stable and reliable operation of the seal. Only when the seal and the housing are completely and correctly assembled, the through hole and the limiting hole will be aligned, allowing the second lock tongue to be inserted to complete the locking. This reduces the possibility of misoperation or accidental unlocking due to inaccurate assembly.

[0018] Furthermore, the seal is also provided with a control unit, and the control unit can obtain the position of the locking member to control the locking member to switch between the first position, the second position and the third position.

[0019] By adopting the above technical solution, the control unit can monitor the position status of the locking part in real time to ensure that it is always in the expected safe position. No matter whether the seal is idle, in use or in maintenance, it can always monitor whether the locking part is in the first position, the second position or the third position, so that users and managers can see the current locking status of the seal at a glance, and realize refined seal management and control. Operators do not need to rely on experience or manual groping to operate the drive part, but only need to interact with the control unit, such as pressing the corresponding function key or receiving a remote authorization signal, to ensure that the locking part reaches the required position quickly and accurately, greatly improving the accuracy and efficiency of the operation.

[0020] Furthermore, the control unit includes three sensing buttons, which are arranged along the circumferential direction of the disk. The disk is provided with a triggering part for triggering the sensing buttons. When the driving member drives the locking member to switch between the first position, the second position and the third position through the disk, the triggering part contacts the three sensing buttons respectively.

[0021] With the above technical solution, three sensing buttons are precisely arranged along the circumference of the disc, just like setting a more accurate navigation signpost for the disc to rotate. When the drive element is started and the disc starts to rotate, a close sensing interaction is formed between the trigger part and the sensing button. Each time a sensing button is passed, a more accurate position calibration is provided for the rotation of the disc, ensuring that the disc rotates according to the preset precise path as much as possible, avoiding rotation deviation caused by mechanical wear, uneven power and other factors, so that the disc can drive the locking element to switch between the first, second and third positions with higher precision.

[0022] Furthermore, the driving member includes a driving motor, the output shaft of the driving motor is a non-circular shaft, and the disc is provided with a non-circular connecting hole adapted to the output shaft of the driving motor.

[0023] The above technical solution adopts a non-circular connection design, which abandons the redundant auxiliary positioning components in the traditional connection method, such as keys and pins, making the connection between the drive motor and the disc simpler, more compact and convenient. The non-circular shaft cooperates with the matching connection hole. Compared with the traditional circular shaft connection, the contact area is larger and the distribution is more reasonable, which can provide stronger and more stable torque transmission. When the drive motor is running, the non-circular structure effectively resists torque fluctuations, ensuring that the rotational power is more accurately transmitted to the disc, allowing the disc to rotate stably and at high speed in strict accordance with the preset trajectory, thereby ensuring that the locking part switches between positions more quickly and accurately, greatly improving the accuracy and reliability of the seal operation, and meeting the scene with high-precision requirements for seal control. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings:

[0025] Figure 1 It is a schematic diagram of the structure of the security anti-tampering seal with multifunctional locking in the present invention;

[0026] Figure 2 It is a partial structural schematic diagram of the security anti-tampering seal with multifunctional locking in the present invention;

[0027] Figure 3 It is a schematic structural diagram of the locking member in the present invention;

[0028] Figure 4 It is a structural schematic diagram of the locking member in the present invention being located at the first position;

[0029] Figure 5 It is a structural schematic diagram of the locking member in the present invention being located at the second position;

[0030] Figure 6 It is a structural schematic diagram of the locking member in the present invention being located at the third position;

[0031] In the figure, 1. Shell; 1.1. Limiting hole; 2. Locking member; 2.1. Second transmission shaft; 2.2. First transmission shaft; 2.3. Disc; 2.4. Trigger; 2.6. First lock tongue; 2.7. Second lock tongue; 3. Ink return pad; 3.1. Limiting groove; 3.2. Avoidance groove; 4. Seal; 4.1. Through hole; 5. Driving member; 5.1. Driving motor; 5.2. Output shaft; 6. Induction button. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in sequences other than those illustrated or described herein.

[0034] It should be understood that in various embodiments of the present invention, the size of the serial numbers of the processes does not mean the order of execution. The execution order of the processes should be determined by their functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0035] It should be understood that in the present invention, "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0036] It should be understood that in the present invention, "plurality" refers to two or more than two. "And / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, X and / or Y can represent: X exists alone, X and Y exist at the same time, and Y exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "Contains X, Y and Z", "Contains X, Y, Z" means that X, Y, and Z are all included, "Contains X, Y or Z" means that one of X, Y, and Z is included, and "Contains X, Y and / or Z" means that any one, any two, or three of X, Y, and Z are included.

[0037] The technical solution of the present invention is described in detail with specific embodiments below. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0038] like Figures 1 to 6 As shown, the present invention discloses a safety anti-disassembly seal with a multifunctional lock, comprising a shell 1, a seal 4 and an ink return pad 3, the ink return pad 3 and the seal 4 are detachably connected, the seal 4 and the shell 1 are detachably connected, the shell 1 is provided with a first installation cavity and a first installation port connected with the first installation cavity, the seal 4 is inserted and installed in the first installation cavity through the first installation port, the insertion end of the seal 4 is provided with a second installation cavity and a second installation port connected with the second installation cavity, the ink return pad 3 is inserted and installed in the second installation cavity through the second installation port, the first installation cavity is provided with a movably installed locking member 2 and a driving member 5 for driving the locking member 2 to move, the locking member 2 is driven by the driving member 5 to have a first position, a second position and a third position, when the locking member 2 is in the first position, the seal 4 is allowed to detach from the first installation cavity and the ink return pad 3 is allowed to detach from the second installation cavity, when the locking member 2 is in the second position, the seal 4 is allowed to detach from the first installation cavity and the ink return pad 3 is locked in the second installation cavity, when the locking member 2 is in the third position, the seal 4 is locked in the first installation cavity and the ink return pad 3 is locked in the second installation cavity at the same time.

[0039] The three different locking states of the seal 4 and the ink return pad 3 are realized by a single driving member 5. The operator does not need to operate multiple complex mechanisms separately to realize the different locking states of the seal 4 and the ink return pad 3. Only a single driving member 5 is needed, thereby improving the flexibility and safety of the use of the seal 4 and improving work efficiency. In the first position, the seal 4 is allowed to be separated from the shell 1, and the ink return pad 3 is also allowed to be separated from the seal 4, so as to adapt to different stamping scenarios as much as possible. When the locking member 2 is in the second position, it allows the seal 4 to be taken out of the shell 1, but the ink return pad 3 will be locked in the seal 4, so as to avoid the ink return pad 3 being removed or replaced separately, and the risk of illegal elements taking advantage of the loopholes of the ink return pad 3 to use the seal illegally is eliminated as much as possible, building a double line of defense for the safe use of the seal 4, and ensuring the safety of the ink supply and the consistency of the stamping effect as much as possible. When the locking member 2 is in the third position, the seal 4 and the ink return pad 3 are firmly locked at the same time, providing a higher level of security protection, preventing unauthorized operation, and further enhancing the overall security.

[0040] Furthermore, the first mounting port and the second mounting port are oriented in different directions, and the direction in which the seal 4 is separated from the first mounting cavity is different from the direction in which the ink return pad 3 is separated from the second mounting cavity. If criminals attempt to illegally disassemble the seal 4 or the ink return pad 3, the different directions of separation increase the difficulty and complexity of their crime. They cannot use a single tool or conventional method to crack the lock of the seal 4 and the ink return pad 3 from the same direction at the same time, and must deal with two mounting ports with different orientations respectively, which reduces the possibility of successful illegal disassembly and provides a strong guarantee for the safety of the seal 4. When the seal 4 or the ink return pad 3 needs to be maintained or replaced, the different separation directions allow the operator to focus on the operation of a single component respectively, without worrying about interfering with the other party when handling one party. For example, when replacing the ink return pad 3, it can be conveniently taken out directly from its corresponding second mounting port, which will not affect the fixed state of the seal 4 in the first mounting cavity, and vice versa, thereby improving maintenance efficiency and shortening equipment downtime.

[0041] In order to achieve the locking of the ink return pad 3 and the seal 4, in the present application, a first limit piece is provided on the ink return pad 3, and a second limit piece is provided on the shell 1. When the locking piece 2 is in the first position, the locking piece 2 is separated from the first limit piece and the second limit piece at the same time to achieve the unlocking between the seal 4, the shell 1 and the ink return pad 3; when the locking piece 2 moves from the first position to the second position, the locking piece 2 cooperates with the first limit piece to lock the ink return pad 3 in the second mounting cavity, and the seal 4 can be taken out as needed, and the ink return pad 3 is prevented from being accidentally touched or maliciously tampered with during operations such as seal 4 maintenance as much as possible, thereby ensuring the safety of the ink supply system; when the driving piece 5 continues to drive the locking piece 2 to move to the third position, the locking piece 2 cooperates with the second limit piece to lock the seal 4 in the first mounting cavity and the ink return pad 3 in the second mounting cavity, thereby eliminating any risk of illegal disassembly and replacement as much as possible, and taking layers of defense. The first limit member and the second limit member give the locking member 2 a clear position so that it can only switch between positions according to a preset safety path. For example, if the operator mistakenly operates the driving member 5 and tries to forcibly unlock the seal 4 when the seal 4 should not be taken out, the locking member 2 is restricted by the second limit member at this time and the unlocking condition of the seal 4 cannot be met, which effectively avoids seal 4 management accidents caused by human negligence and ensures that every seal operation is strictly compliant as much as possible.

[0042] Specifically, the first limiting member includes a limiting groove 3.1 which is staggered with the direction of the return mold pad 3 entering and exiting the second installation port, the second limiting member includes a limiting hole 1.1, the locking member 2 includes a disc 2.3, a first transmission shaft 2.2 and a second transmission shaft 2.1, the disc 2.3 and the output shaft 5.2 of the driving member 5 are fixedly connected, the two ends of the first transmission shaft 2.2 are respectively hinged to the disc 2.3 and the second transmission shaft 2.1, the second transmission shaft 2.1 is provided with a first locking tongue 2.6 which is arranged along the radial direction of the second transmission shaft 2.1 and a second locking tongue 2.7 which is arranged along the axial direction of the second transmission shaft 2.1, the first locking tongue 2.6 can be extended into the limiting groove 3.1 to lock the return ink pad 3 and the seal 4, the second locking tongue 2.7 can be extended into the limiting hole 1.1 to lock the seal 4 and the shell 1, thereby ensuring the precise motion control of the locking member 2 as much as possible, with simple operation and rapid mode switching, meeting the needs of diversified seal use and maintenance scenarios.

[0043] In order to unlock the ink return pad 3, the ink return pad 3 is also provided with an avoidance groove 3.2 which is arranged parallel to the direction of the ink return pad 3 entering and exiting the second installation port. The avoidance groove 3.2 is connected with the limit groove 3.1 to form an L-shaped card slot. When the locking member 2 is in the first position, the first lock tongue 2.6 is located in the avoidance groove 3.2. When the ink return pad 3 enters and exits the second installation port, the first lock tongue 2.6 will not hinder the movement of the ink return pad 3, thereby ensuring that the ink return pad 3 can be smoothly installed and disassembled.

[0044] In order to ensure the stability of locking as much as possible, a control unit is also provided on the seal 4. The control unit can obtain the position of the locking member 2 to control the switching of the locking member 2 between the first position, the second position and the third position. To ensure that it is always in the expected safe position, whether the seal 4 is idle, in use or in maintenance, it can always monitor whether the locking member 2 is in the first position, the second position or the third position, so that users and managers can see the current locking state of the seal 4 at a glance, and realize refined seal 4 management and control. The control unit can record the timestamp and related operation information of each position change of the locking member 2 to form a detailed operation log. The operator does not need to rely on experience or manual groping to operate the driving member 5. It only needs to interact with the control unit, such as pressing the corresponding function key or receiving a remote authorization signal, to ensure that the locking member 2 reaches the desired position quickly and accurately, which greatly improves the accuracy and efficiency of the operation. When the control unit detects an abnormal change in the position of the locking member 2, such as when the locking member 2 deviates from the preset position due to external impact or illegal disassembly attempt, it can immediately trigger the alarm system. The alarm can be presented in various forms such as sound and light, SMS notification or system pop-up window, which can promptly warn the management personnel, make the potential seal 4 security risks nowhere to hide, effectively prevent the destructive behavior of lawless elements, and ensure the safe use of seal 4.

[0045] Specifically, the control unit includes three sensing buttons 6, which are arranged along the circumferential direction of the disc 2.3. The disc 2.3 is provided with a triggering part 2.4 for triggering the sensing buttons 6. When the driving member 5 drives the locking member 2 to switch between the first position, the second position and the third position through the disc 2.3, the triggering part 2.4 contacts the three sensing buttons 6 respectively. The three sensing buttons 6 are like setting a more accurate navigation landmark for the rotation of the disc 2.3. When the driving member 5 is started and the disc 2.3 starts to rotate, a close sensing interaction is formed between the triggering part 2.4 and the sensing button 6. Each time a sensing button 6 is passed, a more accurate position calibration is provided for the rotation of the disc 2.3, ensuring that the disc 2.3 rotates according to the preset precise path as much as possible, avoiding rotation deviation caused by mechanical wear, uneven power and other factors, so that the disc 2.3 can drive the locking member 2 to switch between the first, second and third positions with higher accuracy.

[0046] In order to further improve the locking stability, two first transmission shafts 2.2 and two second transmission shafts 2.1 are provided. The two first transmission shafts 2.2 are respectively located on both sides of the disc 2.3, and two limiting grooves 3.1 and two limiting holes 1.1 are provided, providing double locking points. This not only enhances the locking stability between the ink return pad 3 and the seal 4, and between the seal 4 and the shell 1, but also greatly reduces the risk of failure of a single locking point.

[0047] In order to avoid the risk of accidental unlocking of the locking member 2 due to external impact or vibration, a third limiting member is also provided on the seal 4. When the locking member 2 is in the first position, the locking member 2 and the third limiting member are separately used to realize the unlocking between the locking member 2 and the seal 4. When the locking member 2 is in the second position and the third position, the locking member 2 and the third limiting member cooperate to lock the locking member 2 on the seal 4, thereby enhancing the fixation of the locking member 2 itself and reducing the risk of accidental unlocking due to external impact or vibration.

[0048] Specifically, the third limiting member includes a through hole 4.1 for the second lock tongue 2.7 to pass through. When the seal 4 and the housing 1 are assembled in place, the through hole 4.1 and the limiting hole 1.1 are connected. A more accurate positioning channel is provided for the second lock tongue 2.7, so that during the locking operation, the second lock tongue 2.7 can move along a preset path, avoiding the lock tongue and the limiting structure from being stuck or misaligned due to path deviation, and ensuring that each locking action can be completed accurately and smoothly as much as possible, greatly improving the mechanical precision of the locking device, and ensuring the long-term stable and reliable operation of the seal 4. Only when the seal 4 and the housing 1 are completely and correctly assembled, the through hole 4.1 and the limiting hole 1.1 will be aligned, allowing the second lock tongue 2.7 to be inserted to complete the locking. This reduces the possibility of misoperation or accidental unlocking due to inaccurate assembly.

[0049] In the present application, the driving member 5 includes a driving motor 5.1, the output shaft 5.2 of the driving motor 5.1 is a non-circular shaft, and the disc 2.3 is provided with a non-circular connecting hole adapted to the output shaft 5.2 of the driving motor 5.1. The non-circular connecting design is adopted, and redundant auxiliary positioning components such as keys and pins in the traditional connection method are abandoned, so that the connection between the driving motor 5.1 and the disc 2.3 is more concise, compact and convenient. The non-circular shaft cooperates with the adapted connecting hole, and the contact area is larger and the distribution is more reasonable compared with the traditional circular shaft connection, which can provide a stronger and more stable torque transmission. When the driving motor 5.1 is running, the non-circular structure effectively resists torque fluctuations, ensures that the rotational power is more accurately transmitted to the disc 2.3, and allows the disc 2.3 to rotate stably and at high speed in strict accordance with the preset trajectory, thereby ensuring that the locking member 2 switches between positions more quickly and accurately, greatly improving the accuracy and reliability of the operation of the seal 4, and meeting the scene of high-precision control requirements for the seal 4.

[0050] It should be noted that the output shaft 5.2 of the driving motor 5.1 can be a D-shaped shaft, and the disc 2.3 is provided with a D-shaped connecting hole.

[0051] When using, Figure 4 As shown, when the disc 2.3 group is driven by the driving motor 5.1 to rotate, and the trigger part 2.4 on the disc 2.3 triggers the first sensing button 6, the total length of the first transmission shaft 2.2 and the second transmission shaft 2.1 is the shortest. At this time, the first lock tongue 2.6 is located in the avoidance groove 3.2, the second lock tongue 2.7 does not pass through the through hole 4.1 and does not enter the limiting hole 1.1, the seal 4 and the shell 1 are not locked, and the ink return pad 3 and the seal 4 are not locked.

[0052] like Figure 5 As shown, when the disc 2.3 is driven by the driving motor 5.1 and rotates to the next sensing button 6, the total length of the first transmission shaft 2.2 and the second transmission shaft 2.1 is medium, at this time, the second lock tongue 2.7 passes through the through hole 4.1 but does not enter the limiting hole 1.1, the first lock tongue 2.6 is located in the limiting groove 3.1, the seal 4 and the shell 1 are not locked, and the ink return pad 3 and the seal 4 are locked.

[0053] like Figure 6 As shown, when the disc 2.3 is driven by the driving motor 5.1 and rotates to the next sensing button 6, the total length of the first transmission shaft 2.2 and the second transmission shaft 2.1 reaches the longest. At this time, the second lock tongue 2.7 passes through the through hole 4.1 and enters the limiting hole 1.1, and the first lock tongue 2.6 is located in the limiting groove 3.1, the seal 4 and the shell 1 are locked, and the ink return pad 3 and the seal 4 are locked.

[0054] It should be noted that the multifunctional locking mainly refers to the ability to lock the ink return pad 3 alone, or to lock the ink return pad 3 and the seal 4 simultaneously.

[0055] In addition to the above-mentioned preferred embodiments, the present invention also has other implementation modes. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. A safety anti-tampering seal with a multifunctional lock, comprising a housing, a seal and an ink return pad, wherein the ink return pad and the seal are detachably connected, and the seal and the housing are detachably connected, characterized in that: The shell is provided with a first installation cavity and a first installation port connected with the first installation cavity, the seal is inserted into the first installation cavity through the first installation port and installed, the insertion end of the seal is provided with a second installation cavity and a second installation port connected with the second installation cavity, the ink return pad is inserted into the second installation cavity through the second installation port and installed, the first installation cavity is provided with a movably installed locking member and a driving member for driving the locking member to move, the locking member is driven by the driving member to have a first position, a second position and a third position, when the locking member is in the first position, the seal is allowed to detach from the first installation cavity and the ink return pad is allowed to detach from the second installation cavity, when the locking member is in the second position, the seal is allowed to detach from the first installation cavity and the ink return pad is locked in the second installation cavity, when the locking member is in the third position, the seal is locked in the first installation cavity and the ink return pad is locked in the second installation cavity at the same time.

2. The security anti-tampering seal with multifunctional locking according to claim 1, characterized in that: The ink return pad is provided with a first limit piece, and the shell is provided with a second limit piece. When the locking piece is in the first position, the locking piece is separated from the first limit piece and the second limit piece at the same time to realize the unlocking between the seal, the shell and the ink return pad. When the locking piece moves from the first position to the second position, the locking piece cooperates with the first limit piece to lock the ink return pad in the second mounting cavity. When the driving piece continues to drive the locking piece to move to the third position, the locking piece cooperates with the second limit piece to lock the seal in the first mounting cavity and the ink return pad in the second mounting cavity.

3. The security anti-tampering seal with multifunctional locking according to claim 2, characterized in that: The first limiting member includes a limiting groove which is staggered with the direction of the return mold pad entering and exiting the second installation port, the second limiting member includes a limiting hole, the locking member includes a disc, a first transmission shaft and a second transmission shaft, the disc and the output shaft of the driving member are fixedly connected, the two ends of the first transmission shaft are respectively hinged to the disc and the second transmission shaft, the second transmission shaft is provided with a first locking tongue arranged along the radial direction of the second transmission shaft and a second locking tongue arranged along the axial direction of the second transmission shaft, the first locking tongue can be extended into the limiting groove to lock the return ink pad and the seal, and the second locking tongue can be extended into the limiting hole to lock the seal and the shell.

4. The security anti-tampering seal with multifunctional locking according to claim 3 is characterized in that: The ink return pad is also provided with an avoidance groove which is arranged parallel to the direction in which the ink return pad enters and exits the second installation port. The avoidance groove is connected to the limiting groove. When the locking member is in the first position, the first locking tongue is located in the avoidance groove.

5. The security anti-tampering seal with multifunctional locking according to claim 3, characterized in that: There are two of each of the first transmission shaft and the second transmission shaft, and the two first transmission shafts are respectively located on both sides of the disc, and there are two of each of the limiting grooves and the limiting holes.

6. The security anti-tampering seal with multifunctional locking according to claim 3, characterized in that: The seal is also provided with a third limiting member. When the locking member is in the first position, the locking member and the third limiting member are separated to realize unlocking between the locking member and the seal. When the locking member is in the second position and the third position, the locking member and the third limiting member cooperate to lock the locking member on the seal.

7. The security anti-tampering seal with multifunctional locking according to claim 6, characterized in that: The third limiting member comprises a through hole for the second locking tongue to pass through, and when the seal and the housing are assembled in place, the through hole is communicated with the limiting hole.

8. The security anti-tampering seal with multifunctional locking according to claim 3, characterized in that: The seal is also provided with a control unit, which can obtain the position of the locking member to control the locking member to switch between the first position, the second position and the third position.

9. The security anti-tampering seal with multifunctional locking according to claim 8, characterized in that: The control unit includes three sensing buttons, which are arranged along the circumferential direction of the disk. The disk is provided with a triggering part for triggering the sensing buttons. When the driving member drives the locking member to switch between the first position, the second position and the third position through the disk, the triggering part contacts the three sensing buttons respectively.

10. The security anti-tampering seal with multifunctional locking according to claim 3, characterized in that: The driving member comprises a driving motor, the output shaft of the driving motor is a non-circular shaft, and the disc is provided with a non-circular connecting hole adapted to the output shaft of the driving motor.

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