Anti-error system, operation partition method and partition configuration method of anti-error lock

Abstract

The present invention discloses an anti-error system, comprising at least two keys, each of which comprises a key head, the key head comprises a key rod for cooperating with a corresponding lock core to unlock, the key head is provided with a key avoidance mechanism for avoiding the unlocking hole limit mechanism of the corresponding lock core on the periphery of the key head, the key avoidance mechanism comprises an avoidance protrusion convexly arranged at the end of the key rod and / or an avoidance groove arranged on the side of the end of the key rod and extending through the head of the key rod; the avoidance groove and / or avoidance protrusion provided by the first key constitute the first key avoidance mechanism; the avoidance groove and / or avoidance protrusion provided by the second key constitute the second key avoidance mechanism; the second key avoidance mechanism includes or is compatible with the first key avoidance mechanism. The anti-error system provided by the present invention has a simple structure and is convenient for distinguishing the hierarchical relationship of the key heads. The present invention also provides an operation partitioning method based on the above-mentioned anti-error system and a partition configuration method for anti-error locks.

Description

Technical Field

[0001] The present invention relates to the technical field of error prevention, and in particular to an error prevention system, an operation zoning method, and a zoning configuration method of an error prevention lock. Background Art

[0002] Power grid companies usually control power equipment through anti-error systems, which require locks to be set on the controlled equipment. In daily equipment operation, different tasks require the operation of different equipment, so the equipment needs to be locked and isolated so that the equipment can only be operated within a specific range. This requires setting operating permissions on the locks. At the same time, in order to flexibly control the key unlocking permissions, the anti-error system needs to perform hierarchical control on the unlocking permissions, and cooperate with the corresponding lock cores to achieve hierarchical management of locks. In order to achieve hierarchical control of unlocking keys, hierarchical lock cores in the prior art, such as the invention patent with publication number CN105545103A and publication date 2016.05.04, and the invention patent with publication number CN107178250A and publication date 2017.09.19, both provide lock cores that facilitate hierarchical management of unlocking keys. The grading scheme of the above-mentioned prior art is to set an elastic limiter in the axial direction of the lock core, so as to grade the lock through different combinations of the axial unlocking grooves provided by the unlocking key. However, the space inside the lock core and the axial space of the unlocking key are limited, and the levels divided by such a grading mechanism are very limited. Moreover, since the axial elastic limiter is set inside the lock core, the hierarchical relationship cannot be intuitively distinguished. It is often necessary to compare the grooves of the unlocking key or check the identification or specification parameters of the lock core or the unlocking key to determine the hierarchical relationship of the unlocking key. In addition, the axial limit mechanism is relatively complex, which requires high processing accuracy of the unlocking key and the lock core, and problems are prone to occur if the process does not meet the standards during manufacturing. Although complex limit mechanisms are helpful in preventing theft in the control of certain power equipment and are suitable for outdoor or relatively open areas, for primary equipment that only needs to prevent misoperation, since it is in a specific working space, the anti-theft requirements for the lock core are not high, so there is no need for complex graded lock core mechanisms and unlocking keys, but a lock with simple structure and reliable performance is needed. Summary of the invention

[0003] The invention provides an anti-error system which has a simple and intuitive structure and good hierarchical or zoning expansibility.

[0004] The present invention is achieved by the following technical solutions:

[0005] A system for preventing errors, comprising at least two keys, each of which comprises a key head, wherein the key head comprises a key rod for cooperating with a corresponding lock core to unlock the lock, and a key avoidance mechanism for avoiding a limiting mechanism of an unlocking hole of the corresponding lock core is arranged on the periphery of the key head, wherein the key avoidance mechanism comprises an avoidance protrusion convexly arranged on the end of the key rod and / or an avoidance groove arranged on the side of the end of the key rod and extending through the head of the key rod; the at least two keys comprise a first key and a second key, wherein the avoidance groove and / or avoidance protrusion arranged on the first key constitute a first key avoidance mechanism; the avoidance groove and / or avoidance protrusion arranged on the second key constitute a second key avoidance mechanism; and the second key avoidance mechanism includes or is compatible with the first key avoidance mechanism.

[0006] The avoidance protrusion and / or avoidance groove on the key head avoids the corresponding limiting mechanism (limiting card slot or limiting card block) on the unlocking hole of the lock core when unlocking, so that the key head can be inserted into the lock core and unlock. The unlocking principle is very simple, and the second key avoidance mechanism includes or is compatible with the first key avoidance mechanism, that is, the first key can unlock the first lock and the second lock, but the first key avoidance mechanism is not exactly the same as the second key avoidance mechanism, and cannot unlock all the locks that can be unlocked by the first key (only the locks that match it), so as to realize the partition or hierarchical unlocking authority of the lock. At the same time, the adaptive setting and compatibility design of the corresponding avoidance groove or avoidance protrusion on the key head can realize the partition and hierarchical management of the lock; because the unlocking hole is located at the front end of the lock core instead of inside the lock core and the lock core only needs to be provided with the corresponding limiting mechanism in the circumferential direction, the matching mechanism of the key head and the lock core can be observed intuitively, which is convenient for distinguishing the hierarchical relationship of the key head. In addition, the avoidance mechanism on the key head and the limit mechanism arranged in the circumferential direction of the lock core do not hinder the continued hierarchical design of the key head and the lock core in the axial direction, and the application in the prior art can expand the hierarchical level of the prior art. The anti-mistake system described in the present invention actually includes the control of the lock, so it can also be called a lock control system.

[0007] The present invention also provides a method for partitioning operations. The method is based on the above-mentioned error prevention system. The method is used to perform partition management on the operation area in the operation area. The method comprises:

[0008] The working area is divided into a first area, and then divided into a second area included in the first area. A first lock matching the first key is set on the equipment in the first area, and a second lock matching the second key is set on the equipment in the second area.

[0009] Through the above method, the operator holding the second key can only work in the second area and cannot work in the first area; while the operator holding the first key can work in the first area and the second area; such partitioning can prevent personnel with different work tasks from going to the wrong work area and mistakenly operating equipment outside the work.

[0010] Furthermore, the anti-error system also includes a third key, and the avoidance groove and / or avoidance protrusion on the third key constitute a third key avoidance mechanism; the second key avoidance mechanism includes or is compatible with the first and third key avoidance mechanisms, so that the second key can open the lock that the first and third keys can open.

[0011] The above structure enables the second key to unlock the first lock and the third lock, and the authority of the second key is higher than that of the first and third keys, thereby achieving richer hierarchical management.

[0012] The present invention also provides a method for partitioning operations. The method is based on the above-mentioned error prevention system and is used to perform partition management on the operation area in the operation area. The method comprises:

[0013] The working area is divided into a first area, and then divided into a second area including the first area. A third area relatively independent of the first area is divided within the second area. A first lock matching the first key is set on the equipment in the first area, and a third lock matching the third key is set on the equipment in the third area.

[0014] Through the above method, the operator holding the first key can only work in the first area and cannot work in the second area; the operator holding the third key can only work in the third area and cannot work in the first area; and the operator holding the second key can work in the first area or the third area. Such partitioning can prevent personnel with different work tasks from going to the wrong work area and accidentally operating equipment outside the work area.

[0015] Specifically, the key rod in the above-mentioned anti-error system includes a locking rod head located at the end of the key rod, and the key head also includes an outer ring. The outer ring is sleeved on the outer periphery of the middle part of the key rod, and one end of the outer ring is tightly attached to one end of the locking rod head. The key avoidance mechanism is arranged on the locking rod head, and a locking mechanism is arranged on the outer periphery of the outer ring for engaging with the unlocking hole limiting mechanism of the corresponding lock core; when the lock is unlocked, the locking rod head and the outer ring rotate relative to each other.

[0016] The above structure provides a structure for unlocking by twisting. When the key head is unlocked, the outer ring is engaged with the lock core, and unlocking is achieved by rotating the key rod relative to the outer ring.

[0017] Specifically, the outer ring is provided with a magnet, and the key head is provided with a magnetic sensor at a corresponding position for detecting the position of the magnet.

[0018] Through the above structure, when the key head is unlocked, the rotation of the lock rod head can be detected, thereby confirming whether the lock rod head is rotated to the right position, and then indirectly confirming whether the lock is unlocked. That is, the unlocking state of the lock can be indirectly confirmed.

[0019] Specifically, the key head further includes two electrodes, which are respectively mounted on the bracket and located on both sides of the key rod.

[0020] The two electrodes enable the key head to be applicable to electric locks, electric test locks and other locks with corresponding electrodes, thereby expanding the application scope of the locks.

[0021] Specifically, the anti-error system also includes a lock core matching each key, and the lock core is provided with a pin assembly corresponding to the key groove of the key head. The pin assembly is axially arranged and used to prevent or release the limiting of the rotating core of the lock core relative to the lock core shell of the lock core.

[0022] The pin assembly includes multiple pins. The different depth combinations of the multiple pins form a specific combination. Each specific combination corresponds to a specific key slot combination. Multiple pop-up assemblies correspond to multiple key slot combinations. Inclusion or compatibility relationships can be set between multiple key slot combinations, so that the key head can expand more unlocking permission levels and realize richer partitioning or grading functions.

[0023] The present invention also provides a partition configuration method for anti-mistake locks, including setting a lock core circumferential limiting mechanism on the lock core; setting a key avoidance mechanism corresponding to the lock core circumferential limiting assembly on the key head, the lock core circumferential limiting mechanism is set to multiple types, and different limiting combinations are provided between the lock core circumferential limiting mechanisms, the key avoidance mechanism is set to multiple key avoidance mechanisms corresponding to the multiple lock core circumferential limiting mechanisms, and the multiple key avoidance combinations are set with inclusion or compatibility relationships according to management authority requirements.

[0024] Furthermore, the above-mentioned partition configuration method of the anti-mistake lock also includes setting a lock core axial limiting mechanism on the lock core, and setting a key axial unlocking mechanism corresponding to the axial limiting mechanism of the lock core on the key head, the lock core axial limiting mechanism is set to multiple types, and different limiting combinations are provided between the lock core axial limiting mechanisms, the key axial unlocking mechanism is set to multiple key axial unlocking mechanisms corresponding to the multiple lock core axial limiting mechanisms, and the multiple key axial unlocking mechanisms are set with inclusion or compatibility relationships according to management authority requirements.

[0025] Specifically, in the above-mentioned zoning configuration method of the anti-mistake lock, the limiting mechanism includes a circumferentially arranged limiting slot and / or a limiting block provided on the front end of the unlocking hole of the lock core; the key avoidance mechanism includes a circumferentially arranged avoidance protrusion protruding from the end of the key head or an avoidance groove provided on the side of the end of the key head and extending through the end of the key head.

[0026] The anti-error system, operation partitioning method, and partition configuration method of the anti-error lock provided by the present invention are such that the key head avoids the limiting mechanism provided on the lock core through the circumferentially arranged avoidance protrusions and / or avoidance grooves, so that the key head can be inserted into the lock core and unlocked. The unlocking principle is very simple, and the inclusion and compatibility relationship of different keys can be set according to the needs to realize the partitioning or hierarchical authority management of the lock. Since the unlocking hole of the corresponding lock core is located at the front end of the lock core instead of being located inside the lock core and the key rod only needs to be provided with the corresponding avoidance mechanism in the circumferential direction, the matching mechanism of the key head and the lock core can be observed intuitively, which is convenient for distinguishing the hierarchical relationship of the key head. In addition, the avoidance mechanism of the key head and the limiting mechanism provided in the circumferential direction of the lock core do not hinder the key head and the lock core from continuing to be hierarchically designed in the axial direction, and their application in the prior art can expand the hierarchical level of the unlocking key of the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional diagram of a key head provided in an embodiment of the present invention.

[0028] Figure 2 A side view of a key head provided in accordance with an embodiment of the present invention.

[0029] Figure 3 This is a top view of the key head provided in the first embodiment of the present invention.

[0030] Figure 4 4 is a three-dimensional diagram of a key rod in an embodiment of the present invention.

[0031] Figure 5 It is a front view of the lock rod head of the key rod in the embodiment of the present invention.

[0032] Figure 6 This is a relationship diagram of the first key and the second key unlocking the first lock and the second lock in an embodiment of the present invention.

[0033] Figure 7 This is a relationship diagram of the first key, the second key, and the third key unlocking the first lock, the second lock, and the third lock in an embodiment of the present invention.

[0034] Figure 8 The figure is a schematic diagram of a work area partition in an embodiment of the present invention.

[0035] Fig. 9It is a schematic diagram of another working area partition in an embodiment of the present invention.

[0036] Fig.10 It is a schematic diagram of another working area partition in an embodiment of the present invention.

[0037] Fig.11 It is a front view of the locking rod head of the fourth key in the embodiment of the present invention.

[0038] Fig.12 It is a three-dimensional diagram of the lock cylinder D in the embodiment of the present invention. DETAILED DESCRIPTION

[0039] For the sake of convenience, the directions such as up, down, left, right, front, back, horizontal, and vertical that may be defined in this application are intended to determine the relative positional relationship in combination with the drawings and text descriptions, and do not constitute a limitation on the actual directions of the products involved in this application during production, use, and sales. The specific implementation methods of the present invention are further described below in combination with the drawings:

[0040] Embodiment 1

[0041] like Figures 1 to 3 As shown, this embodiment provides a key head, including a bracket 6 and a key rod 1 mounted on the bracket 6, and an outer ring 2 is provided on the periphery of the key rod 1. The key rod 1 includes a lock rod head 11 arranged at the front end of the key rod.

[0042] The bracket 6 has an assembly cavity, and the outer ring 2 is axially fixed and circumferentially rotatably arranged in the front part of the assembly cavity, and the front part of the outer ring 2 extends out of the bracket 6. The outer ring 2 has a key rod assembly hole that passes through the front and back, and the key rod 1 is inserted into the key rod assembly hole, and the front and rear ends of the key rod 1 both extend out of the key rod assembly hole. The outer ring 2 is sleeved on the outer periphery of the middle part of the key rod 1, and one end of the outer ring 2 is close to one end of the lock rod head 11. The rear end of the key rod 1 is fixedly assembled with the bracket 6, so that when the bracket 6 is rotated, the key rod 1 rotates synchronously with the bracket 6. The outer ring 2 is provided with a magnet, and the key rod 1 or the bracket 6 is provided with a magnetic sensor for detecting the position of the magnet at the corresponding position, which is not shown in the figure. Through this structure, when the key head is unlocked, it can detect the rotation of the lock rod head 11 relative to the outer ring 2, thereby confirming whether the lock rod head is rotated in place, and then indirectly confirming whether the lock is unlocked, that is, indirectly confirming the unlocking state of the operated lock.

[0043] The key head also includes two electrodes 7, which are respectively mounted on the bracket 6 and located on both sides of the key rod 1, and each electrode is used to be electrically connected to the control circuit board in the computer key (combined with the second embodiment). The two electrodes make the key head suitable for electric locks, electric test locks and other locks with corresponding electrodes.

[0044] A controllable limit assembly is provided between the key rod 1 and the outer ring 2. When the controllable limit assembly is controlled, the outer ring 2 is prevented from rotating relative to the key rod 1, or the outer ring 2 is released so that the outer ring 2 can rotate relative to the key rod 1. The prior art provides a variety of implementations of the controllable limit assembly, which can be found in the relevant records of Chinese invention patents CN105545109A and CN106401290A. The controllable limit assembly provided between the key rod 1 and the outer ring 2 is not described in detail herein.

[0045] The key head and the key using the key head are used to unlock the lock cylinder matched with it. Figure 6 Taking the first lock shown in the figure as an example, the first lock comprises a lock core housing 81, a rotating core 82 and a plurality of pin assemblies 83 ( Figure 6 There are four groups in the figure), the pin assembly 83 is used to move under the resistance of the key rod 1 and enable the rotating core 82 to rotate relative to the lock cylinder housing 81. The specific mechanism of the pin assembly can be various, such as the solution disclosed in the invention No. CN105545103A (in which the pin assembly is called a clutch plate, etc.) or the invention No. CN107178250A. This application will not further describe the pin assembly. The front end surface of the lock cylinder housing 81 is provided with an unlocking hole, and a key positioning column 821 is provided on the rotating core 82 at a position corresponding to the insertion hole 815 of the key rod 1.

[0046] Combination Figure 1 As shown, a lock core matching hole 13 is axially opened inwardly at the front of the key rod 1 for matching with the key positioning column 821 of the rotating core 82. Figure 4 and Figure 5 As shown, a lock rod head 11 is arranged outside the front end of the key rod 1, and a key tooth groove 111 corresponding to the pin assembly 83 of the lock core is arranged outside the lock rod head 11. The key tooth groove 111 is a groove with a preset length opened on the side of the lock rod head and extending through the lock rod head and arranged along the axial direction of the lock rod head. It is used to fit with the corresponding pin assembly 83 when the lock core is inserted and push the pin assembly 83 to move to a position where the lock core housing 81 and the rotating core 82 can rotate relative to each other. The key tooth groove forms a key axial unlocking mechanism.

[0047] The side surface of the end of the key rod 1 is also provided with an avoidance protrusion 112 and an avoidance groove 113; the outer ring 2 is provided with a positioning protrusion 22 aligned with the avoidance protrusion 112 corresponding to the avoidance protrusion 112, and a positioning groove 23 aligned with the avoidance groove 113 corresponding to the avoidance groove 113. Among them, the lock rod head 11 is used to drive the rotating core of the controlled lock core to rotate through the key tooth groove to realize the unlocking operation; the positioning protrusion 22 is used to clamp the outer ring 2 on the lock core shell of the controlled lock core during the unlocking process, so that the outer ring 2 will not rotate with the key rod 1.

[0048] Embodiment 2

[0049] Embodiment 2 provides a computer key, including a key body and a key head arranged on the key body, wherein the key head adopts the key head described in Embodiment 1. The key body includes a shell, a control circuit board arranged in the shell, and a human-computer interaction component (such as a display screen, buttons, etc.) arranged on the surface of the shell. The control circuit board is used for data collection, data analysis and drive control, including controlling the action of the controllable limit component of the key head, thereby preventing or allowing the outer ring 2 to rotate relative to the key rod 1.

[0050] The specific control principle and process are as follows:

[0051] When the unlocking authorization is not obtained, the control circuit board controls the action of the controllable limit assembly so that the key rod 1 and the outer ring 2 are locked with each other, thereby limiting the rotation of the key rod 1 relative to the outer ring 2; and the outer ring 2 has a limit mechanism that is circumferentially engaged with the lock cylinder shell of the controlled lock cylinder and will not rotate relative to the lock cylinder shell. At this time, the key rod 1 is also unable to rotate relative to the lock cylinder shell, and the unlocking operation cannot be achieved.

[0052] When the unlocking authorization is obtained, the control circuit board controls the controllable limit assembly to move, so that the key rod 1 and the outer ring 2 are released from each other, and the key rod is not restricted from rotating relative to the outer ring 2. At this time, even if the limit mechanism of the outer ring 2 is engaged with the unlocking hole of the operated lock cylinder, the key rod 1 can rotate relative to the outer ring 2, thereby unlocking the controlled lock cylinder.

[0053] Embodiment 3

[0054] This embodiment provides a lock core, including a lock core housing 81, a rotating core 82, and a plurality of pin assemblies 83 arranged axially, wherein the pin assemblies 83 are used to prevent or release the rotation core 82 from being limited relative to the lock core housing 81. Figure 6 There are four groups in the figure), the pin assembly 83 is used to move under the resistance of the key rod 1 and enable the rotating core 82 to rotate relative to the lock core shell 81. There are many specific mechanisms of the pin assembly, such as the solution disclosed in the invention No. CN105545103A (the pin assembly is called a clutch plate, etc. in the invention) or the invention No. CN107178250A. This application will not further explain the pin assembly. The lock core is used in conjunction with the key head described in the above embodiment. The lock core is provided with a pin assembly 83 corresponding to the key tooth groove 111 of the key head; the end of the lock core shell that cooperates with the key head is formed with an unlocking hole, and the outer end of the unlocking hole is provided with an inner edge that shrinks inwards, and the inner edge is provided with a limiting mechanism for circumferential engagement with the key head. The limiting mechanism is a limiting block 812 protruding toward the unlocking hole corresponding to the avoidance groove. In other embodiments, the limiting mechanism can also be a limiting groove recessed toward the inner edge corresponding to the avoidance protrusion.

[0055] Embodiment 4

[0056] Combination Figure 6 As shown, this embodiment provides an anti-error system, including a first key, a second key, a first lock and a second lock, the first key is provided with a first key head 100, the second key is provided with a second key head 200, the first lock is provided with a lock core A, and the second lock is provided with a lock core B.

[0057] like Figure 6 As shown, the first lock includes a lock core shell 81 and a rotating core 82. An unlocking hole is provided on the front end surface of the lock core shell 81, and a limiting card slot 811 recessed into the hole wall of the unlocking hole and a protruding limiting card block 812 are provided on the hole wall of the unlocking hole, wherein there are two limiting card blocks 812, which are symmetrically arranged with the axis of the first lock, and the limiting card slot 811 is located between the two limiting card blocks 812, and the limiting card slot 811, the limiting card block 812 and the pin assembly of the lock core are staggered in the axial direction. A key positioning column 821 is provided in the middle of the position corresponding to the key rod insertion hole 815 on the rotating core 82. The two limiting card blocks 812 of the first lock form a first lock core card block group. The first lock core card block group can be called a first lock core limiting mechanism.

[0058] like Figure 6 As shown, other parts of the second lock are the same as those of the first lock, except that a limiting block 812 is provided on the wall of the unlocking hole of the second lock at a position opposite to the limiting slot 811, and the three limiting blocks 812 of the second lock form a second lock core block group, which can be called a second lock core limiting mechanism.

[0059] The main structures of the first key head 100 and the second key head 200 adopt the key head described in the first embodiment, and the lock rod head 11 thereof is further designed in this embodiment.

[0060] Combination Figure 4 , Figure 5 As shown, in addition to the key tooth groove 111 and the avoidance protrusion 112, the outer periphery of the lock rod head 11 of the first key head 100 is also provided with two avoidance grooves 113 corresponding to the two limit blocks 812 of the first lock. The avoidance protrusion 112 is used to avoid the limit groove 811 of the lock core, so that the lock rod head 11 can be inserted into the lock core and drive the rotating core to rotate together; the avoidance groove 113 is used to avoid the limit block 812 when the lock rod head 11 is inserted into the unlocking hole of the first lock, so that the key can be inserted into the lock core. Figures 1 to 5As shown, the front end of the outer ring 2 of the first key head 100 abuts against the lock rod head 11, and the outer edge of the outer ring 2 is flush with the outer edge of the main body of the lock rod head 11. The limiting mechanism provided at the outer edge of the front end of the outer ring 2 includes a positioning protrusion 22 and a positioning card slot 23 aligned and connected with the avoidance groove 113 of the lock rod head. The height of the positioning protrusion 22 is consistent with the height of the driving protrusion 112 on the periphery of the lock rod head 11. When the positioning protrusion 22 is aligned with the avoidance protrusion 112, the positioning card slot 23 is aligned with the avoidance groove 113 on the periphery of the lock rod head 11, and they are staggered with each other during the unlocking operation.

[0061] The first key head 100 has two avoidance grooves 113 and two positioning slots 23, which together form a first key slot group. The first key slot group matches the first lock core block group in position and size.

[0062] The second key head 200 is designed with an additional avoidance groove 113 and a positioning card slot 23 on the basis of the first key head 100, that is, there are three avoidance grooves 113 and three positioning card slots 23, which together form a second key card slot group. The second key card slot group corresponds to the position and size of the second lock core card block group. The avoidance protrusion and avoidance groove of the first key can be called a first key avoidance mechanism, and the avoidance protrusion and avoidance groove of the second key can be called a second key avoidance mechanism.

[0063] The key axial unlocking mechanism and the key avoidance mechanism formed by the key tooth groove are staggered with each other in the axial direction of the key rod.

[0064] Since the second key avoidance mechanism is based on the first key avoidance mechanism with an additional avoidance groove 113 , the second key avoidance mechanism includes or is compatible with the first key avoidance mechanism.

[0065] In this embodiment, the position and size of the avoidance protrusions and avoidance grooves in the first key avoidance mechanism are at least the same as the position and size of some avoidance protrusions and avoidance grooves in the second key avoidance mechanism; the position and size of at least one avoidance protrusion and avoidance groove in the second key avoidance mechanism are different from those of the avoidance protrusion and avoidance groove in the first key avoidance mechanism.

[0066] When the lock rod head of the first key head 100 is inserted into the unlocking hole of the operated first lock, the positioning protrusion 22 of the first key head 100 engages with the limiting slot 811 at the unlocking hole of the lock core A of the first lock, and the two positioning slots 23 of the first key engage with the two limiting blocks 812 at the unlocking hole of the lock core A, that is, the positioning protrusion 22 and the positioning slot 23 respectively form a multi-point engagement with the limiting slot 811 and the limiting block 812, and the first key avoidance mechanism avoids the first lock core limiting mechanism.

[0067] When the locking rod head of the second key head 200 is inserted into the unlocking hole of the operated second lock, the positioning protrusion 22 of the second key head engages with the limiting slot 811 at the unlocking hole of the second lock, and the three positioning slots 23 of the second key head engage with the three limiting blocks 812 at the unlocking hole of the second lock, that is, the positioning protrusion 22 and the positioning slot 23 respectively form a multi-point engagement with the limiting slot 811 and the limiting block 812, and the second key avoidance mechanism avoids the second lock core limiting mechanism.

[0068] Since the first key avoidance mechanism has only two avoidance grooves, it cannot completely avoid the three limit blocks on the second lock, and therefore the first key cannot be inserted into and unlock the second lock. The second key avoidance mechanism adds an avoidance groove to the first key avoidance mechanism, and the lock core B has no limiting effect on the second key avoidance mechanism. The second key can be inserted into and unlock the lock core B. Therefore, the second key avoidance mechanism includes or is compatible with the first key avoidance mechanism, so that the second key head can unlock the first lock and the second lock.

[0069] As can be seen from the above, by setting different numbers of limit blocks and / or limit slots (i.e., limit mechanisms) at the unlocking hole of the lock core and setting corresponding avoidance mechanisms on the key head, the lock core and the key head can be divided, thereby expanding the flexibility of unlocking management while ensuring safe unlocking.

[0070] In this embodiment, when the key head is inserted into the lock core, the avoidance groove that avoids the limit card block 812 extends from the key rod to the outer ring, so the avoidance groove provided on the key rod and the positioning card slot provided on the outer ring in this embodiment constitute a key card slot group. In other key structures, the outer ring may not be provided or the positioning card slot may not be provided on the outer ring. In addition, corresponding to different key head structures, the avoidance groove may also have other different forms. As long as the groove provided on the key head is provided corresponding to and used in conjunction with the limit card block, it can be understood as an avoidance groove. The setting of the avoidance groove is intended to avoid the limit card block provided on the lock core, and the structure based on this function can be understood as equivalent to the avoidance groove. The avoidance mechanism in this embodiment is an avoidance groove. Under the inspiration of the concept of the present invention, in other embodiments, those skilled in the art can easily think that the avoidance groove can also be replaced by an avoidance protrusion, and the corresponding limit card block provided at the unlocking hole of the lock core can be replaced by a limit card slot matching the avoidance protrusion. The above easily thought-of contents of the present invention are not repeated in the embodiments of the present invention.

[0071] Embodiment 5

[0072] Based on the above error prevention system, this embodiment further provides a method for partitioning operations, including:

[0073] like Figure 8As shown, the working area is divided into a first area A, and further divided into a second area A including the first area B. A first lock matching the first key is set on the equipment in the first area A, and a second lock matching the second key is set on the equipment in the second area B.

[0074] In this way, the second key head 200 can open all locks in the AB area, while the first key head 100 can only open the locks in the A area. It can be seen that the unlocking authority of the second key head 200 is higher than that of the first key head 100, and the partition management of the locks is realized.

[0075] or:

[0076] like Fig. 9 As shown, the first area A and the second area B in the working space are independent of each other in physical space. A first lock matching the first key head 100 is set on the equipment in the first area A, and a second lock matching the second key head 200 is set on the equipment in the second area B.

[0077] Thus, the second key head 200 can open all locks in the AB area, while the first key head 100 can only open locks in the A area. Since the operator in the second area B can work in the first area A, the second area B is also regarded as including the first area A.

[0078] In summary, the second key head 200 is compatible with two different lock cores, while the first key head 100 can only unlock one lock core. Different lock cores are used in different areas to perform spatial isolation and realize zoning or hierarchical management.

[0079] Embodiment 6

[0080] Embodiment 6 provides an anti-error system, which further comprises a third key and a third lock on the basis of the anti-error system described in Embodiment 4. The third key is provided with a third key head 300, and the third lock is provided with a lock core C.

[0081] like Figure 7As shown, the third key head 300 is also provided with two avoidance grooves 113 and two positioning grooves 23. The difference from the first key head 100 is that the positions of the two avoidance grooves 113 and the two positioning grooves 23 on the third key head 300 are different, and the corresponding lock core C is provided with a limiting block that matches the two avoidance grooves 113 and the two positioning grooves 23 on the third key head 300. The two avoidance grooves 113 and the two positioning grooves 23 on the third key head 300 form a third key positioning groove group; the limiting block on the lock core C constitutes a third lock core block group, also known as a third lock core limiting mechanism. The third key avoidance mechanism matches the third lock core limiting mechanism. Among them, the positions of the two avoidance grooves 113 and the two positioning grooves 23 on the third key head 300 are the same as those of the avoidance grooves 113 and the positioning grooves 23 on the second key head 200, that is, the second key head 200 can also include or be compatible with the third key head 300. The second key head 200 can also unlock the lock cylinder C, that is, unlock the third lock.

[0082] The position and size of the avoidance protrusions and avoidance grooves in the third key avoidance mechanism are at least the same as the position and size of some of the avoidance protrusions and avoidance grooves in the second key avoidance mechanism, and the position or size of at least one avoidance protrusion and avoidance groove in the second key avoidance mechanism is different from the avoidance protrusion and avoidance groove in the third key avoidance mechanism.

[0083] Embodiment 7

[0084] Based on the above error prevention system, such as Fig.10 As shown, the present embodiment also provides a work zoning method, including: dividing the work area into a first area A, and further dividing it into a second area B including the first area A, dividing the third area C relatively independent of the first area A within the second area B, setting a first lock matching the first key head 100 on the equipment in the first area A, and setting a third lock matching the third key head 300 on the equipment in the third area C.

[0085] In this way, the second key head 200 can open all locks in the AC area, while the first key head 100 can only open the locks in the A area, and the third key head 300 can only open the locks in the C area. It can be seen that the unlocking authority of the second key head 200 is higher than that of the first key head 100 and the third key head 300, realizing the partition management of locks.

[0086] Through the above method, the operator holding the first key can only work in the first area and cannot work in the second area; the operator holding the third key can only work in the third area and cannot work in the first area; and the operator holding the second key can work in the first area or the third area. Such partitioning can prevent personnel with different work tasks from going to the wrong work area and accidentally operating equipment outside the work area.

[0087] The above embodiments only provide limited examples of the key head and the lock core being matched with each other through the circumferentially arranged avoidance mechanism and limit mechanism, and those skilled in the art can make inferences based on the above embodiments. Fig.11 and Fig.12 As shown, Fig.11 A fourth key head 400 and a corresponding Fig.12 The lock cylinder D provided on the fourth lock shown in the figure is different from the second key head 200 in the above embodiment in that the fourth key head has a smaller size of an avoidance groove 114', and correspondingly, different from the lock cylinder B in the above embodiment in that the lock cylinder D has a smaller size of a limit block 813'. This allows the second key head 200 to include or be compatible with the fourth key head 400. The second key head 200 can unlock the lock cylinder D.

[0088] The key head and lock core described above are mainly coordinated through the avoidance mechanism and the limiting mechanism arranged in the circumferential direction, which does not hinder the key head and the lock core from continuing to be graded in the axial limit design, and can be applied in the prior art to expand the graded level of the unlocking key of the prior art, for example, it can be applied to the technical solution described in the invention patent with publication number CN105545103A and publication date 2016.05.04 or the invention patent lock with publication number CN107178250A and publication date 2017.09.19. The lock can be partitioned by the circumferential limiting mechanism, and axial classification can be performed in each independent area to achieve a variety of different combinations. The above two cited patents are included in the embodiments of the present invention by full reference as part of the embodiments of the present invention.

[0089] Embodiment 8

[0090] Based on the specific description of the above embodiments, this embodiment can summarize a partition configuration method for anti-mistake locks, which includes setting a limit mechanism on the unlocking hole of the lock core; setting a key avoidance mechanism corresponding to the limit mechanism on the key head, and setting the limit mechanism to multiple types, and having different limit combinations between each limit mechanism, setting the key avoidance mechanism to multiple key avoidance mechanisms corresponding to the multiple limit mechanisms, and setting inclusion or compatibility relationships among the multiple key avoidance mechanisms according to management authority requirements.

[0091] The method further includes providing a lock core axial limit mechanism on the lock core, and providing a key axial unlocking mechanism corresponding to the lock core axial limit mechanism on the key head, wherein the lock core axial limit mechanism is provided in multiple forms, and each lock core axial limit mechanism has a different limit combination. The key axial unlocking mechanism is provided in multiple forms corresponding to the multiple lock core axial limit mechanisms, and the multiple key axial unlocking mechanisms are provided with an inclusion or compatibility relationship according to management authority requirements.

[0092] In the method, the limiting mechanism includes a circumferentially arranged limiting slot and / or a limiting block provided on the front end of the unlocking hole of the lock core; the key avoidance mechanism includes a circumferentially arranged avoidance protrusion protruding from the end of the key head or an avoidance groove provided on the side of the end of the key head and extending through the end of the key head.

[0093] The "circumferential direction" mentioned in the present invention essentially refers to the direction parallel to the end face of the unlocking hole of the lock core or the end face of the key rod, which can also be expressed as "transverse" or "radial". The "axial direction" mentioned in the present invention essentially refers to the direction along or parallel to the central axis of the lock core or the axis of the key rod, which can also be expressed as "longitudinal".

[0094] The above descriptions are only some embodiments of the present invention. The obvious extended applications made by those skilled in the art based on the contents described in the present invention also fall within the scope of protection of the present invention. Various changes, substitutions, combinations and modifications to the present invention without departing from the spirit and scope of the present invention also fall within the scope of protection of the present invention.

Claims

1. An anti-error system, characterized in that: The invention comprises at least two keys, each of which comprises a key head, the key head comprises a key rod for cooperating with a corresponding lock core to unlock the lock, the key head is provided with a key avoidance mechanism on the periphery of the key head for avoiding the limiting mechanism of the unlocking hole of the corresponding lock core, the key avoidance mechanism comprises an avoidance protrusion protruding from the end of the key rod and / or an avoidance groove provided on the side of the end of the key rod and extending through the head of the key rod; the at least two keys comprise a first key and a second key, the avoidance groove and / or avoidance protrusion provided on the first key constitute a first key avoidance mechanism; the avoidance groove and / or avoidance protrusion provided on the second key constitute a second key avoidance mechanism; the second key avoidance mechanism includes or is compatible with the first key avoidance mechanism; the limiting mechanism comprises a circumferentially arranged limit slot or a limit block provided on the front end of the unlocking hole of the lock core; the key avoidance mechanism comprises a circumferentially arranged avoidance block protruding from the end of the key head or a key avoidance groove provided on the side of the end of the key head and extending through the end of the key head.

2. The error prevention system according to claim 1, characterized in that: The at least two keys also include a third key, and the avoidance groove and / or avoidance protrusion on the key head of the third key constitute a third key avoidance mechanism; the second key avoidance mechanism includes or is compatible with the first and third key avoidance mechanisms.

3. The error prevention system according to any one of claims 1 or 2, characterized in that: The key rod includes a locking rod head located at the end of the key rod, and the key head also includes an outer ring. The outer ring is sleeved on the outer periphery of the middle part of the key rod, and one end of the outer ring is tightly attached to one end of the locking rod head. The key avoidance mechanism is arranged on the locking rod head, and a locking mechanism is arranged on the outer periphery of the outer ring for engaging with the unlocking hole limiting mechanism of the corresponding lock core; when the lock is unlocked, the locking rod head and the outer ring rotate relative to each other.

4. The error prevention system according to claim 3, characterized in that: The outer ring is provided with a magnet, and the key head is provided with a magnetic sensor at a corresponding position for detecting the position of the magnet.

5. The error prevention system according to claim 4, characterized in that: It also includes a lock core that matches each key. The lock core is provided with a pin assembly that corresponds to the key groove of the key head. The pin assembly is axially arranged and used to prevent or release the position of the rotating core of the lock core relative to the lock core shell of the lock core.

6. A method for partitioning a job, characterized in that: The method is based on the error prevention system of claim 1, and is used to perform zoning management on the work area in the work area, and the method comprises: The working area is divided into a first area, and then divided into a second area including the first area. A first lock matching the first key is set on the equipment in the first area, and a second lock matching the second key is set on the equipment in the second area.

7. A method for partitioning a job, characterized in that: The method is based on the error prevention system according to claim 2, and is used to perform zoning management on the work area in the work area, and the method comprises: The working area is divided into a first area, and then divided into a second area including the first area. A third area relatively independent of the first area is divided within the second area. A first lock matching the first key is set on the equipment in the first area, and a third lock matching the third key is set on the equipment in the third area.

8. A partition configuration method for anti-misuse locks, characterized in that: A limiting mechanism is arranged on the unlocking hole of the lock core; a key avoidance mechanism corresponding to the limiting mechanism is arranged on the key head, the limiting mechanisms are arranged in multiple forms, and different limiting combinations are arranged between the limiting mechanisms, the key avoidance mechanism is arranged in multiple forms corresponding to the multiple limiting mechanisms, and the multiple key avoidance mechanisms are provided with inclusion or compatibility relationships according to management authority requirements; the limiting mechanism includes a circumferentially arranged limiting slot or a limiting block arranged on the front end of the unlocking hole of the lock core; the key avoidance mechanism includes a circumferentially arranged avoidance block protruding from the end of the key head or a key avoidance groove arranged on the side of the end of the key head and extending through the end of the key head.

9. The partition configuration method of the anti-mistake lock according to claim 8, characterized in that: The method also includes setting a lock core axial limiting mechanism on the lock core, and setting a key axial unlocking mechanism corresponding to the axial limiting mechanism of the lock core on the key head, the lock core axial limiting mechanism is set to multiple types, and different limiting combinations are provided between the lock core axial limiting mechanisms, the key axial unlocking mechanism is set to multiple key axial unlocking mechanisms corresponding to the multiple lock core axial limiting mechanisms, and the multiple key axial unlocking mechanisms are set with inclusion or compatibility relationships according to management authority requirements.

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