A pinhole lock body structure and a convertible key structure

Abstract

This invention belongs to the field of security equipment technology and discloses a pinhole lock body structure and a variable key structure. The lock body structure uses an external keyhole and an internal keyhole for unlocking via a plug-in mechanism. The key variable for unlocking is changed from the internal structure of the keyhole to the depth of the key needle insertion. Only when the key needle pushes the coded push block a specific distance can the contact surface between the locking block and the coded push block align with the connecting surface of the external and internal keyholes, thus achieving unlocking. Therefore, this lock body structure has higher security and reliability. The key structure, through the combination of a variable pin disc and key needle structure, can provide multiple key needle layout schemes for unlocking on a single key structure. Only a specific layout scheme can unlock the corresponding door leaf. Therefore, it is difficult for someone other than the user to directly unlock the lock body. This key structure increases the protective performance and reliability of mechanical locks. Therefore, this invention is suitable for widespread use.

Description

Technical Field

[0001] The invention belongs to the technical field of security equipment, and specifically relates to a lock core and a key structure, and more particularly to a pinhole lock body structure and a convertible key structure. Background Art

[0002] As a safety device, locks have been widely used in daily household, industrial production, office and other aspects of people's life and work. Their function is to seal or lock important items and areas, which can only be opened by specific personnel.

[0003] Existing locks mainly include electronic locks and mechanical locks. Electronic locks use electricity, magnetism and network technologies to control the lock tongue. Since they cannot work when the power is off and are easily affected by magnetic interference and cause misoperation, the application of electronic locks has unstable factors, and its reliability is still criticized by many people. As a product of traditional technology, mechanical locks have been continuously improved in the process of technological upgrading. The technology of mechanical locks tends to be refined, and its reliability is much higher than that of electronic locks.

[0004] However, most common existing mechanical locks need to be unlocked by keys, and the key and lock core usually adopt a plug-in structure to unlock. As the only way to open a plug-in mechanical lock, the potential safety hazard of key unlocking is the safety of the key. As long as you have the key, you can open the lock, and there is no more protection during the unlocking process. Therefore, the safety of traditional mechanical locks is mainly reflected in the safekeeping of the key. The key cannot be lost, and its structure cannot be leaked, so as to reduce the possibility of illegal opening of the mechanical lock.

[0005] The actual situation is that people often lose their keys inadvertently, which makes it impossible to unlock the door. They can only unlock the door by destroying the lock body or the door body. In this way, the lock can no longer be used and people have to replace the lock core. In other cases, there is a keyhole on the lock body, and the structure inside the lock core may leak through the keyhole. Therefore, criminals can understand the internal lock core by observing the keyhole, simulate the structure of the key, and use special tools to open the lock.

[0006] Therefore, the existing mechanical locks also have reliability problems, and people cannot ensure safety when using mechanical locks. It is necessary to propose a more reasonable technical solution to improve the existing mechanical lock structure and solve the technical problems existing in the prior art. Summary of the invention

[0007] The present invention provides a pinhole type lock body structure, aiming to improve the structure of the lock body. The interior of the unlocking body cannot be observed through the keyhole, and the corresponding key cannot be copied. The structure adopted by the lock body is a combination of multiple complex plug-in structures, which increases the difficulty of copying the key to unlock the lock. At the same time, the plug-in structure of the lock body can still maintain good mechanical properties after long-term use, thereby ensuring the smoothness of the cooperation and the safety and reliability of the lock body.

[0008] In order to achieve the above effects, the technical solution adopted by the present invention is:

[0009] A pinhole lock body structure includes a lock shell and a lock core rotatably arranged in the lock shell. Under normal circumstances, the lock core is locked with the lock shell, the lock core cannot rotate, and cannot drive the lock tongue to unlock; after the lock core and the lock shell are locked by using the correct key, the lock core can rotate relative to the lock shell, thereby driving the lock tongue to unlock. Specifically, a plurality of external keyholes are provided in the area of ​​the lock shell that is not passed by the rotation axis of the lock core, and a coding push block is slidably arranged in the external keyhole; an internal keyhole corresponding to the position of the external keyhole is provided on the lock core, and a locking block and an elastic member are arranged in the internal keyhole, the internal keyhole is coaxially connected with the external keyhole, the upper end of the locking block passes through the connection between the external keyhole and the internal keyhole and contacts the coding push block, and the elastic member makes the locking block and the coding push block press tightly.

[0010] The lock body structure disclosed above adopts the method of setting an outer keyhole and an inner keyhole to replace the keyhole on the traditional lock body, and sets a coding push block and a locking block in the outer keyhole and the inner keyhole respectively, and unlocks the lock by the cooperation of the coding push block and the locking block. The sliding distance of the coding push block in the outer keyhole is used as the key control variable for unlocking the lock, and this variable cannot be known through external observation, so the confidentiality of the unlocking information is good and the security level is high.

[0011] The area where the outer keyhole and the inner keyhole can be arranged on the lock shell includes multiple outer surfaces of the lock shell. When the locking block enters the outer keyhole from the inner keyhole, the lock core and the lock shell can be stuck to limit the relative rotation between the two.

[0012] Furthermore, the above technical solution is optimized and a preferred technical solution is proposed, wherein the external keyhole is located on the lock disk surface of the lock shell perpendicular to the rotation axis of the lock core, and the external keyhole is arranged on the circumference of a concentric circle. In this solution, the coding push block and the locking block are both arranged in the direction in which the rotation axis of the lock core extends, and slide in the direction of the axis to realize unlocking and locking.

[0013] Furthermore, the above technical solution is optimized and another preferred technical solution is proposed, wherein the outer keyhole is located on the side surface perpendicular to the lock plate, the outer keyhole is perpendicular to the rotation axis of the lock core, and is arranged along the radius direction of a circle with the axis as the center, and the inner keyhole on the lock core is arranged correspondingly to the outer keyhole. When the locking block extends from the inner keyhole into the outer keyhole, the lock core and the lock shell are locked; when the coding push block is pushed toward the axis, and the contact surface of the coding push block and the locking block coincides with the connecting surface of the inner keyhole and the outer keyhole, the lock core and the lock shell can rotate relatively.

[0014] Further, the above technical solution is optimized, and the coding push block arranged in the outer keyhole includes a cylindrical linear push block and / or a spherical convex push block. When coding push blocks of different shapes slide in the outer keyhole, the smoothness of sliding and the degree of stability maintenance are different.

[0015] Preferably, when the coding push block adopts a cylindrical linear push block, the coding push block includes two sections of cylinders with different diameters, and the outer keyhole includes two sections of circular holes with different apertures. The thinner section of the coding push block is located in a section of the circular hole of the outer keyhole close to the outer surface of the lock shell, and the thicker section of the coding push block is located in a section of the outer keyhole close to the inner surface of the lock shell. The advantage of this arrangement is that the coding push block will not fall from the outer keyhole.

[0016] Furthermore, the relative engagement and locking of the lock core and the lock housing relies on the locking action of the locking block at the connection point between the two. This structure is relatively simple. The above technical solution is optimized to increase the locking position and the number of locks. The lock housing and the lock core are overlapped with each other, and the lock housing is provided with a lock housing groove. The lock core is provided with a lock core groove corresponding to the lock housing groove, and the lower end of the lock core groove is connected to the lock core ring groove; the locking block is provided with a radial protrusion, which passes through the lock housing groove and enters the lock core groove and limits the relative rotation of the lock housing and the lock core. After the encoding push block pushes the locking block downward to make the radial protrusion slide into the lock core ring groove, the lock housing and the lock core can rotate relative to each other.

[0017] Furthermore, when the lock core is placed inside the lock shell, when the coding push block and the locking block reach the unlocking position, the lock core and the lock shell have a relative rotational movement tendency, so as long as a certain torque is given to the lock core, the lock core can rotate relative to the lock shell. To achieve this operation, the torque is generally transmitted through a transmission rod, so the above technical solution is optimized, and a circular outer key rod hole is provided in the area corresponding to the rotation axis of the lock core on the lock shell, and an inner key rod hole is provided at the rotation axis of the lock core, and the bottom area of ​​the inner key rod hole is less than or equal to the area at the opening of the inner key rod hole, and the bottom cross-section of the inner key rod hole is any shape other than a circle. The significance of such a setting is that a key rod for transmitting torque is inserted through the outer key rod, and the key rod enters the inner key rod hole and engages with the bottom of the inner key rod hole. At this time, the lock core will rotate with the rotation of the key rod, and the torque transmission is achieved; at the same time, the portion of the key rod corresponding to the outer key rod hole is in its original shape, so the lock shell remains stationary, and the key rod and the lock shell rotate relative to each other.

[0018] Preferably, the cross-section of the bottom of the inner keyhole can be a polygonal, elliptical or other shape that is convenient for snap-fitting and locking.

[0019] Furthermore, the lock cylinder and the lock housing rotate relative to each other to unlock. After one unlocking is completed, the lock cylinder and the lock housing need to be reset to achieve re-locking. The relative rotation angle between the lock cylinder and the lock housing is manually set, which is not convenient for precise control during the reset. Therefore, the above technical solution is optimized, and a reset device is provided between the lock cylinder and the lock housing. The reset device makes the lock cylinder and the lock housing rotate relative to each other and then rotate back to the initial matching position. Resetting by the reset device is simpler and faster, and eliminates the tediousness of manual reset.

[0020] Preferably, a groove can be provided on the relative rotating surface of the lock core and the lock housing, and a reset elastic member such as a torsion spring can be provided in the groove. When the lock core and the lock housing rotate relative to each other, the reset elastic member generates a restoring force. When the lock is unlocked, the lock core can rotate back to its initial position under the action of the restoring force of the reset elastic member.

[0021] Furthermore, the lock can be unlocked when the lock core and the lock housing rotate relative to a certain angle, but it is useless to rotate too much. Therefore, the above technical solution is optimized to limit the rotation angle of the lock core and the lock housing to a reasonable range, and a limiting structure is provided between the lock core and the lock housing, which allows the lock core and the lock housing to rotate relative to each other within a limited angle range.

[0022] Preferably, a limit groove and a limit block can be provided on the relative rotation surface of the lock core and the lock shell. In the locked state, the limit block is located at one end of the limit groove. When the lock core and the lock shell rotate relative to each other, the limit block slides along the limit groove. When the lock core rotates to reach the unlocking angle, the limit block just reaches the other end of the limit groove and presses against it.

[0023] The present invention also provides another lock body structure, and the specific technical solution adopted is:

[0024] A pinhole lock body structure comprises a lock shell and a lock core rotatably arranged in the lock shell; specifically: a plurality of external keyholes are arranged in the area of ​​the lock shell that is not passed through by the rotation axis of the lock core, and a coding push block is slidably arranged in the external keyhole; an internal keyhole corresponding to the position of the external keyhole is arranged on the lock core, and a locking block, a top cylinder and a tension spring are arranged in the internal keyhole, the upper end of the locking block is connected to the coding push block, the tension spring is sleeved on the outside of the coding push block or the locking block, and the lower end of the tension spring is fixedly connected to the coding push block or the locking block, and the top cylinder sleeve It is connected to the outside of the tension spring, and the top of the tension spring is connected to the top of the top tube; the inner keyhole is coaxially connected with the outer keyhole, the lock shell and the lock core are overlapped with each other, the lock shell is provided with a lock shell slide groove, and the lock core is provided with a lock core slide groove corresponding to the lock shell slide groove, and the lower end of the lock core slide groove is connected to the lock core ring groove; the locking block is provided with a radial protrusion, the radial protrusion passes through the lock shell slide groove and enters the lock core slide groove and limits the relative rotation of the lock shell and the lock core. After the encoding push block pushes the locking block downward to make the radial protrusion slide into the lock core ring groove, the lock shell and the lock core can rotate relative to each other.

[0025] This technical solution can be used alone or in combination with the first technical solution, so as to achieve more matching solutions and improve the safety and reliability of the lock body.

[0026] The above content explains the lock body structure from the perspective of composition structure and connection relationship. The key structure used in conjunction with the lock body structure will be described in detail below.

[0027] The present invention also provides a convertible key structure, which cooperates with the lock body mentioned above, and is intended to unlock the lock by combining and changing the key to correspond to the plug-in and pull-out structure of the lock body. The key adopts a key pin structure, and various key structure changes can occur through the combination of the layout, length and activity changes of the key pin. If the matching structure of the key and the lock body is not understood, the key cannot be directly used to unlock the lock. When the key is used to unlock the lock, an additional precautionary procedure occurs, so the security problem of the lock is transferred from the storage of the key to the use of the key, thereby improving the security level of the lock. This key structure can convert the structural lock hook, so one key can be used to open multiple lock bodies. For example, the above-mentioned lock body is installed on multiple door panels in a home, and the difference is that the key pin layout used when unlocking is different; in this case, the present invention discloses that the key can be converted into different key pin layout structures to open the corresponding door panels respectively, which is very convenient.

[0028] In order to achieve the above effects, the technical solution adopted by the present invention is:

[0029] A convertible key structure can be unlocked after being inserted into the lock body structure. Specifically, it includes a plurality of coaxially arranged needle disks, adjacent needle disks rotate relative to each other, key needles are arranged on the needle disks, the key needles correspond to the outer key holes one by one, and the key needles push the coding push block after being inserted into the outer key hole. When the key needles completely enter the outer key hole, the contact surface of the coding push block and the locking block coincides with the connecting surface of the outer key hole and the inner key hole, and the lock core and the lock shell can realize relative rotation.

[0030] The key structure disclosed above uses a key pin to push the coding push block and the locking block to move a specific distance to a position where the lock core can rotate, thereby unlocking the key. After a number of needle disks rotate relative to each other, the layout of the key pins changes, and only a specific layout can unlock a corresponding lock body. Therefore, the key structure has a safety performance of preventing loss.

[0031] Further, the above technical solution is optimized, and corresponding to the lock shell structure, the key structure also includes a key rod, which passes through the center of the needle plate and rotates relative to the needle plate, and the key rod cooperates with the channel formed by the connection between the outer key rod hole and the inner key rod hole, and the front end shape of the key rod corresponds to the bottom shape of the inner key rod hole. When the key is inserted into the lock shell, the key needle unlocks the coding push block and the locking block, and the key rod cooperates with the inner key hole to drive the lock core to rotate, thereby finally unlocking.

[0032] Furthermore, in the process of unlocking, the key rod needs to be rotated to transfer the torque from the key rod to the lock core, and the end of the key rod is cylindrical, which is not convenient to grasp and rotate; therefore, the above technical solution is optimized, and a key handle is also provided at the end of the key rod, and the key handle contacts and rotates relatively with the needle disk. One of the functions of the key handle is to drive the key rod to rotate and transfer torque, and the second function is to press against the needle disk, so that the key needle on the needle disk presses against the coding push block, and the coding push block and the locking block are positioned in the unlocking position, ensuring the relative movement trend of the lock core and the lock housing.

[0033] Preferably, the spoon handle contacts the needle disk and rotates relatively thereto, and structures such as balls and / or rollers are provided on the contact surface thereof, so that the friction between the spoon handle and the needle disk is reduced and the relative movement is easier.

[0034] Furthermore, the above technical solution is optimized, and the adjacent needle dials rotate relative to each other to change the layout of the key needles, which is equivalent to changing a set of unlocking passwords. During the rotation of the needle dial, a certain number of specific positions are set as unlocking password positions, that is, the needle dial is provided with a spring groove or a spring hole, and a spring spring and a clamping marble are arranged in the spring groove or the spring hole. Annular grooves are arranged on adjacent needle dials, and the annular grooves are connected to the spring grooves or the spring holes, and recessed positions are arranged at intervals in the annular grooves. The spring springs push the clamping marbles into the annular grooves, and the clamping marbles slide in the annular grooves. When the clamping marbles slide and get stuck in the recessed positions, the adjacent needle dials are clamped to each other.

[0035] Preferably, when a spring groove is provided on the needle disk, a corresponding spring groove is also provided on the contact surface of the adjacent needle disk, together forming a channel for the spring to move in extension and contraction.

[0036] Furthermore, the above technical solution is optimized. In order to increase the layout of the key pins corresponding to the unlocking code, a confusing key pin can be used, that is, the key pin rotates relative to the needle plate, and the key pin is perpendicular to the needle plate or fits with the needle plate after rotation. In a partial unlocking solution, only part of the key pins may be used, and the unused key pins are rotated and fit with the needle plate.

[0037] Furthermore, the above technical solution is further optimized. While the number of key needle layout schemes is increased, in order to improve the certainty of the user's own identification of the unlocking scheme, coding marks are provided on the needle plate and / or the lock shell, and different combinations of coding marks are used to determine whether it is a correct unlocking scheme and to determine a specific lock body that can be unlocked.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. The lock body structure disclosed in the present invention is unlocked by setting an outer keyhole and an inner keyhole, and a plug-in structure is used to change the key variable of the lock body from the structure inside the keyhole to the amount of key pin entry. Only when the key pin pushes the coding push block to move a specific distance, the contact surface of the locking block and the coding push block can be overlapped with the connecting surface of the outer keyhole and the inner keyhole, thereby achieving unlocking. The safety and reliability of the lock body structure are higher.

[0040] 2. The key structure disclosed in the present invention can provide multiple unlocking key pin layout schemes on one key structure by combining a variable needle plate and a key pin structure. Only a specific layout scheme can unlock the corresponding door leaf. Therefore, it is difficult for a non-user to directly unlock the lock body when holding the key. The key structure changes the reliability of the mechanical lock from the storage of the key to the use of the key, thereby increasing the protection performance of the mechanical lock, improving the difficulty of opening the mechanical lock, and increasing the reliability of the mechanical lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only represent some embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 It is a schematic cross-sectional structural diagram of the lock body structure in Example 1.

[0043] Figure 2Schematic diagram of the outer keyhole layout of the lock body structure in Example 1.

[0044] Figure 3 It is a schematic cross-sectional structural diagram of the lock body structure in Example 2.

[0045] Figure 4 It is a schematic cross-sectional structural diagram of the lock body structure in Example 5.

[0046] Figure 5 It is a schematic diagram of the lock core sliding groove and the lock core ring groove in Example 4.

[0047] Figure 6 It is a schematic cross-sectional structural diagram of the lock body structure in Example 6.

[0048] Figure 7 It is a schematic cross-sectional view of the AA section reset device.

[0049] Figure 8 It is a schematic cross-sectional structural diagram of the lock body structure in Example 7.

[0050] Fig. 9 It is a schematic diagram of the cross section at the BB section limit groove.

[0051] Fig.10 It is a schematic cross-sectional view of the key structure in Example 8.

[0052] Fig.11 It is a schematic cross-sectional view of the key structure in Example 9.

[0053] Fig.12 It is a schematic cross-sectional structural diagram of the key structure in Example 10.

[0054] Fig.13 It is a schematic cross-sectional structural diagram of the lock body in Example 4.

[0055] Fig.14 It is a top view of the key structure.

[0056] In the figure above, the meanings of the numbers are: 1-lock housing; 2-external keyhole; 3-coding push block; 4-external key rod hole; 5-lock cylinder; 501-lock cylinder slide groove; 502-lock cylinder ring groove; 6-locking block; 7-inner keyhole; 8-elastic member; 9-key rod; 10-needle plate; 11-key needle; 12-key handle; 13-spring groove; 14-spring spring; 15-clamping marble; 16-inner key rod hole; 17-groove; 18-reset elastic member; 19-limiting groove; 20-limiting block; 21-disc cap; 22-key cover; 23-top cylinder; 24-key plate. DETAILED DESCRIPTION

[0057] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0058] Embodiment 1:

[0059] like Figure 1 , Figure 2 As shown, this embodiment discloses a pinhole lock body structure, including a lock shell 1 and a lock core 5 rotatably arranged in the lock shell 1. Under normal conditions, the lock core 5 is locked with the lock shell 1, the lock core 5 cannot rotate, and cannot drive the lock tongue to unlock; after the lock core 5 and the lock shell 1 are locked by using the correct key, the lock core 5 can rotate relative to the lock shell 1, thereby driving the lock tongue to unlock. Specifically, the lock shell 1 is provided with a plurality of external key holes 2 in the area not passed by the rotation axis of the lock core 5, and a coding push block 3 is slidably arranged in the external key hole 2; the lock core 5 is provided with an internal key hole 7 corresponding to the position of the external key hole 2, and a locking block 6 and an elastic member 8 are arranged in the internal key hole 7, the internal key hole 7 is coaxially connected with the external key hole 2, the upper end of the locking block 6 passes through the connection between the external key hole 2 and the internal key hole 7 and contacts with the coding push block 3, and the elastic member 8 makes the locking block 6 and the coding push block 3 press tightly, and specifically, the lower end of the locking block 6 presses tightly with the elastic member 8. Specifically, the elastic member 8 is a spring.

[0060] The lock body structure disclosed above adopts the method of setting an outer keyhole 2 and an inner keyhole 7 to replace the keyhole on the traditional lock body, and respectively sets a coding push block 3 and a locking block 6 in the outer keyhole 2 and the inner keyhole 7, and unlocks the lock by the cooperation between the coding push block 3 and the locking block 6. The sliding distance of the coding push block 3 in the outer keyhole 2 is used as the key control variable for unlocking the lock, and this variable cannot be known through external observation, so the confidentiality of the unlocking information is good and the security level is high.

[0061] The area where the outer keyhole 2 and the inner keyhole 7 can be set on the lock shell 1 includes multiple outer surfaces of the lock shell 1. When the locking block 6 enters the outer keyhole from the inner keyhole 7, the lock core 5 and the lock shell 1 can be stuck to restrict the relative rotation between the two.

[0062] This embodiment adopts a preferred technical solution, wherein the outer keyhole 2 is located on the lock plate surface of the lock housing 1 perpendicular to the rotation axis of the lock cylinder 5, and the outer keyhole 2 is arranged on the circumference of a concentric circle. In this solution, the coding push block 3 and the locking block 6 are both arranged in the direction in which the rotation axis of the lock cylinder 5 extends, and slide in the direction of the axis to realize unlocking and locking.

[0063] When the lock core 5 is placed inside the lock housing 1, and when the coding push block and the locking block 6 reach the unlocking position, the lock core 5 and the lock housing 1 have a relative rotational movement tendency, so as long as a certain torque is given to the lock core 5, the lock core 5 can rotate relative to the lock housing 1. To achieve this operation, the torque is generally transmitted through a transmission rod, so the above technical solution is optimized, and a circular outer key rod hole 4 is provided in the area corresponding to the rotation axis of the lock core 5 on the lock housing 1, and an inner key rod hole 16 is provided at the rotation axis of the lock core 5, and the bottom area of ​​the inner key rod hole 16 is less than or equal to the area at the mouth of the inner key rod hole 16, and the bottom cross-section of the inner key rod hole 16 is any shape other than a circle. The significance of such arrangement is that a key rod 9 for transmitting torque is inserted through the outer key rod 9, and the key rod 9 enters the inner key rod hole 16 and engages with the bottom of the inner key rod hole 16. At this time, the lock core 5 will rotate with the rotation of the key rod 9 to realize the transmission of torque; at the same time, the portion of the key rod 9 corresponding to the outer key rod hole 4 is in its original shape, so the lock housing 1 remains stationary, and the key rod 9 and the lock housing 1 rotate relative to each other.

[0064] The cross-section of the bottom of the inner keyhole 7 can be a polygonal, elliptical or other shape that is convenient for locking.

[0065] In this embodiment, the lock core and the lock housing rotate relative to each other, and marbles can be arranged between the lock core and the lock housing to achieve smooth rotation.

[0066] Embodiment 2:

[0067] like Figure 3 As shown, this embodiment discloses a pinhole lock body structure, including a lock shell 1 and a lock core 5 rotatably arranged in the lock shell 1. Under normal conditions, the lock core 5 is locked with the lock shell 1, the lock core 5 cannot rotate, and cannot drive the lock tongue to unlock; after the lock core 5 and the lock shell 1 are locked by using the correct key, the lock core 5 can rotate relative to the lock shell 1, thereby driving the lock tongue to unlock. Specifically, the lock shell 1 is provided with a plurality of external key holes 2 in the area not passed by the rotation axis of the lock core 5, and a coding push block 3 is slidably arranged in the external key hole 2; the lock core 5 is provided with an internal key hole 7 corresponding to the position of the external key hole 2, and a locking block 6 and an elastic member 8 are arranged in the internal key hole 7, the internal key hole 7 is coaxially connected with the external key hole 2, the upper end of the locking block 6 passes through the connection between the external key hole 2 and the internal key hole 7 and contacts with the coding push block 3, and the elastic member 8 makes the locking block 6 and the coding push block 3 press tightly, and specifically, the lower end of the locking block 6 presses tightly against the elastic member 8.

[0068] This embodiment adopts a technical solution different from that in Embodiment 1, and the specific difference is:

[0069] In this embodiment, the above technical solution is optimized and another preferred technical solution is proposed, wherein the outer keyhole 2 is located on the side surface perpendicular to the lock plate, the outer keyhole 2 is perpendicular to the rotation axis of the lock core 5, and is arranged along the radius direction of a circle with the axis as the center, and the inner keyhole 7 on the lock core 5 is arranged corresponding to the outer keyhole 2. When the locking block 6 extends from the inner keyhole 7 into the outer keyhole 2, the lock core 5 and the lock housing 1 are locked; the coding push block 3 is pushed to move toward the axis, and when the contact surface of the coding push block 3 and the locking block 6 coincides with the connecting surface of the inner keyhole 7 and the outer keyhole 2, the lock core 5 and the lock housing 1 can rotate relative to each other.

[0070] The structures and connection relationships of other parts in this embodiment are the same as those in Embodiment 1, and will not be described again here.

[0071] Embodiment 3:

[0072] The present embodiment discloses a pinhole lock structure, comprising a lock shell 1 and a lock core 5 rotatably arranged in the lock shell 1. Under normal conditions, the lock core 5 is locked with the lock shell 1, the lock core 5 cannot rotate, and cannot drive the lock tongue to unlock; after the lock core 5 and the lock shell 1 are locked by using a correct key, the lock core 5 can rotate relative to the lock shell 1, thereby driving the lock tongue to unlock. Specifically, a plurality of external key holes 2 are provided in the area of ​​the lock shell 1 that is not passed by the rotation axis of the lock core 5, and a coding push block 3 is slidably arranged in the external key hole 2; an internal key hole 7 corresponding to the position of the external key hole 2 is provided on the lock core 5, and a locking block 6 and an elastic member 8 are arranged in the internal key hole 7, the internal key hole 7 is coaxially connected with the external key hole 2, the upper end of the locking block 6 passes through the connection between the external key hole 2 and the internal key hole 7 and contacts with the coding push block 3, and the elastic member 8 makes the locking block 6 and the coding push block 3 press tightly, and specifically, the lower end of the locking block 6 presses tightly against the elastic member 8.

[0073] This embodiment adopts a technical solution different from that in Embodiment 1, and the specific difference is:

[0074] In this embodiment, the above technical solution is optimized, and the coding push block 3 disposed in the outer keyhole 2 includes a cylindrical linear push block and / or a spherical convex push block. When the coding push blocks 3 of different shapes slide in the outer keyhole 2, the smoothness of the sliding and the degree of stability maintenance are different.

[0075] When the coding push block 3 is a cylindrical linear push block, the coding push block 3 includes two sections of cylinders with different diameters, and the outer keyhole 2 includes two sections of circular holes with different apertures. The thinner section of the coding push block is located in a section of the circular hole of the outer keyhole 2 close to the outer surface of the lock shell 1, and the thicker section of the coding push block is located in a section of the outer keyhole 2 close to the inner surface of the lock shell 1. The advantage of this arrangement is that the coding push block 3 will not fall from the outer keyhole 2.

[0076] The structures and connection relationships of other parts in this embodiment are the same as those in Embodiment 1, and will not be described again here.

[0077] Embodiment 4:

[0078] like Fig.13 As shown, the present embodiment discloses a pinhole lock body structure, including a lock shell 1 and a lock core 5 rotatably disposed in the lock shell 1. Under normal circumstances, the lock core 5 is locked with the lock shell 1, and the lock core 5 cannot rotate and cannot drive the lock tongue to unlock. After the correct key is used to contact the lock core 5 and the lock shell 1, the lock core 5 can rotate relative to the lock shell 1, thereby driving the lock tongue to unlock. Specifically: a pinhole lock body structure, including a lock shell and a lock core rotatably disposed in the lock shell; specifically: a plurality of external keyholes are provided in the area of ​​the lock shell that is not passed through by the rotation axis of the lock core, and a coding push block is slidably disposed in the external keyhole; an internal keyhole corresponding to the position of the external keyhole is provided on the lock core, and a locking block, a top cylinder and a tension spring are provided in the internal keyhole, the upper end of the locking block is connected to the coding push block, the tension spring is sleeved on the outside of the coding push block or the locking block, and the lower end of the tension spring is fixedly connected to the coding push block or the locking block, the The top cylinder is sleeved on the outside of the tension spring, and the top of the tension spring is connected to the top of the top cylinder; the inner keyhole is coaxially connected to the outer keyhole, the lock shell and the lock core are overlapped with each other, the lock shell is provided with a lock shell slide groove, and the lock core is provided with a lock core slide groove corresponding to the lock shell slide groove, and the lower end of the lock core slide groove is connected to the lock core ring groove; the locking block is provided with a radial protrusion, the radial protrusion passes through the lock shell slide groove and enters the lock core slide groove and limits the relative rotation of the lock shell and the lock core. After the encoding push block pushes the locking block downward to make the radial protrusion slide into the lock core ring groove, the lock shell and the lock core can rotate relative to each other.

[0079] In this embodiment, the locking block is an elastic member. After the locking block descends, when its lowermost end contacts the bottom of the inner keyhole, the radial protrusion on the locking block just reaches the lock core ring groove, and the lock core and the lock housing can rotate relative to each other.

[0080] The structures and connection relationships of other parts in this embodiment are the same as those in Embodiment 1, and will not be described again here.

[0081] Embodiment 5:

[0082] like Figure 4As shown, this embodiment discloses a pinhole lock body structure, including a lock shell 1 and a lock core 5 rotatably arranged in the lock shell 1. Under normal conditions, the lock core 5 is locked with the lock shell 1, the lock core 5 cannot rotate, and cannot drive the lock tongue to unlock; after the lock core 5 and the lock shell 1 are locked by using the correct key, the lock core 5 can rotate relative to the lock shell 1, thereby driving the lock tongue to unlock. Specifically, the lock shell 1 is provided with a plurality of external key holes 2 in the area not passed by the rotation axis of the lock core 5, and a coding push block 3 is slidably arranged in the external key hole 2; the lock core 5 is provided with an internal key hole 7 corresponding to the position of the external key hole 2, and a locking block 6 and an elastic member 8 are arranged in the internal key hole 7, the internal key hole 7 is coaxially connected with the external key hole 2, the upper end of the locking block 6 passes through the connection between the external key hole 2 and the internal key hole 7 and contacts with the coding push block 3, and the elastic member 8 makes the locking block 6 and the coding push block 3 press tightly, and specifically, the lower end of the locking block 6 presses tightly against the elastic member 8.

[0083] This embodiment adopts a technical solution different from that in Embodiment 4, and the specific difference is:

[0084] like Figure 5 As shown, in the present embodiment, the relative engagement and locking of the lock core and the lock housing relies on the locking action of the locking block at the connection point between the two. The structure is relatively simple. The above technical scheme is optimized to increase the locking position and the number of locking positions. The lock housing and the lock core are overlapped with each other, and a lock housing groove is provided on the lock housing. The lock core is provided with a lock core groove 501 corresponding to the lock housing groove, and the lower end of the lock core groove is connected to the lock core ring groove 502; a radial protrusion is provided on the locking block, and the radial protrusion passes through the lock housing groove into the lock core groove and limits the relative rotation of the lock housing and the lock core. After the encoding push block pushes the locking block downward to make the radial protrusion slide into the lock core ring groove, the lock housing and the lock core can rotate relative to each other.

[0085] The structures and connection relationships of other parts in this embodiment are the same as those in Embodiment 4 and will not be described again here.

[0086] Embodiment 6:

[0087] like Figure 6As shown, this embodiment discloses a pinhole lock body structure, including a lock shell 1 and a lock core 5 rotatably arranged in the lock shell 1. Under normal conditions, the lock core 5 is locked with the lock shell 1, the lock core 5 cannot rotate, and cannot drive the lock tongue to unlock; after the lock core 5 and the lock shell 1 are locked by using the correct key, the lock core 5 can rotate relative to the lock shell 1, thereby driving the lock tongue to unlock. Specifically, the lock shell 1 is provided with a plurality of external key holes 2 in the area not passed by the rotation axis of the lock core 5, and a coding push block 3 is slidably arranged in the external key hole 2; the lock core 5 is provided with an internal key hole 7 corresponding to the position of the external key hole 2, and a locking block 6 and an elastic member 8 are arranged in the internal key hole 7, the internal key hole 7 is coaxially connected with the external key hole 2, the upper end of the locking block 6 passes through the connection between the external key hole 2 and the internal key hole 7 and contacts with the coding push block 3, and the elastic member 8 makes the locking block 6 and the coding push block 3 press tightly, and specifically, the lower end of the locking block 6 presses tightly against the elastic member 8.

[0088] This embodiment adopts a technical solution different from that in Embodiment 1, and the specific difference is:

[0089] In this embodiment, the lock cylinder and the lock housing rotate relative to each other to unlock. After one unlocking, the lock cylinder and the lock housing need to be reset to achieve re-locking. The relative rotation angle between the lock cylinder and the lock housing is manually set, which is not convenient for precise control during the reset. Therefore, the above technical solution is optimized, and a reset device is provided between the lock cylinder and the lock housing. The reset device makes the lock cylinder and the lock housing rotate relative to each other and then return to the initial matching position. Resetting by the reset device is simpler and faster, and eliminates the tediousness of manual reset.

[0090] Specifically, Figure 7 As shown, a groove 17 is provided on the relative rotation surface of the lock core and the lock housing, and the groove can be placed on the lock core or the lock housing; a torsion spring-like reset elastic member 18 is provided in the groove, and when the lock core and the lock housing rotate relative to each other, the reset elastic member generates a restoring force, and when the lock is unlocked, the lock core can rotate back to the initial position under the action of the restoring force of the reset elastic member.

[0091] The structures and connection relationships of other parts in this embodiment are the same as those in Embodiment 1, and will not be described again here.

[0092] Embodiment 7:

[0093] like Figure 8As shown, this embodiment discloses a pinhole lock body structure, including a lock shell 1 and a lock core 5 rotatably arranged in the lock shell 1. Under normal conditions, the lock core 5 is locked with the lock shell 1, the lock core 5 cannot rotate, and cannot drive the lock tongue to unlock; after the lock core 5 and the lock shell 1 are locked by using the correct key, the lock core 5 can rotate relative to the lock shell 1, thereby driving the lock tongue to unlock. Specifically, the lock shell 1 is provided with a plurality of external key holes 2 in the area not passed by the rotation axis of the lock core 5, and a coding push block 3 is slidably arranged in the external key hole 2; the lock core 5 is provided with an internal key hole 7 corresponding to the position of the external key hole 2, and a locking block 6 and an elastic member 8 are arranged in the internal key hole 7, the internal key hole 7 is coaxially connected with the external key hole 2, the upper end of the locking block 6 passes through the connection between the external key hole 2 and the internal key hole 7 and contacts with the coding push block 3, and the elastic member 8 makes the locking block 6 and the coding push block 3 press tightly, and specifically, the lower end of the locking block 6 presses tightly against the elastic member 8.

[0094] This embodiment adopts a technical solution different from that in Embodiment 1, and the specific difference is:

[0095] In this embodiment, the lock can be unlocked by rotating the lock core and the lock housing relative to a certain angle, and it is useless to rotate too much. Therefore, the above technical solution is optimized to limit the rotation angle of the lock core and the lock housing to a reasonable range. A limiting structure is provided between the lock core and the lock housing, and the limiting structure allows the lock core and the lock housing to rotate relative to each other within a limited angle range.

[0096] Specifically, Fig. 9 As shown, a limit groove 19 and a limit block 20 can be provided on the relative rotation surface of the lock core and the lock shell. The limit groove can be provided on the lock core or the lock shell, and the limit block is correspondingly provided on the lock shell or the lock core. In the locked state, the limit block is located at one end of the limit groove. When the lock core and the lock shell rotate relative to each other, the limit block slides along the limit groove. When the lock core rotates to reach the unlocking angle, the limit block just reaches the other end of the limit groove and presses tightly.

[0097] The structures and connection relationships of other parts in this embodiment are the same as those in Embodiment 1, and will not be described again here.

[0098] Embodiment 8:

[0099] The above-mentioned embodiments 1 to 7 illustrate the lock body structure from the perspective of composition structure and connection relationship. The key structure used in conjunction with the lock body structure will be described in detail below.

[0100] like Fig.10As shown, this embodiment discloses a convertible key structure, which cooperates with the lock body in embodiments 1 to 3, and is intended to unlock the lock by combining and changing the key to correspond to the plug-in structure of the lock body. The key adopts a key pin 11 structure, and a variety of key structure changes can occur through the combination of the layout, length and activity change of the key pin 11. If the matching structure of the key and the lock body is not understood, the key cannot be directly used to unlock the lock. When the key is used to unlock the lock, an additional precautionary procedure occurs, so the security problem of the lock is transferred from the storage of the key to the use of the key, thereby improving the security level of the lock. This key structure can convert the structural lock hook, so one key can be used to open multiple lock bodies. For example, the above-mentioned lock body is installed in multiple door panels in a home, and the difference is that the layout of the key pin 11 used when unlocking is different; in this case, the disclosed key can change different key pin 11 layout structures to open the corresponding door panels respectively, which is very convenient.

[0101] The above-mentioned convertible key structure can be unlocked after being inserted into the above-mentioned lock body structure. Specifically, it includes a plurality of coaxially arranged needle disks 10, and the adjacent needle disks 10 rotate relatively. The needle disks 10 are provided with key pins 11, and the key pins 11 correspond to the outer key holes 2 one by one. After the key pins 11 are inserted into the outer key holes 2, they push the coding push block 3. When the key pins 11 completely enter the outer key holes 2, the contact surface of the coding push block 3 and the locking block 6 coincides with the connecting surface of the outer key holes 2 and the inner key holes 7, and the lock core 5 and the lock housing 1 can realize relative rotation.

[0102] The key structure disclosed in this embodiment uses the key pin 11 to push the coding push block 3 and the locking block 6 to move a specific distance, and moves them to a position that allows the lock core 5 to rotate, thereby achieving unlocking. After a number of needle disks 10 rotate relative to each other, the layout of the key pin 11 changes, and only a specific layout can unlock a corresponding lock body, so the structure of the key has a safety performance of preventing loss. For specific explanation, in this embodiment, the number of layers of the outer key hole 2 is two, namely the outer layer hole and the inner layer hole, and the number of holes in each layer is four; the number of corresponding needle disks 10 is two, namely the outer layer needle disk 10 and the inner layer needle disk 10; the key pin 11 on the outer layer needle disk 10 corresponds to the outer layer hole, and the key pin 11 on the inner layer needle disk 10 corresponds to the inner layer hole.

[0103] In this embodiment, the above technical solution is optimized, and the key structure corresponding to the lock shell 1 structure further includes a key rod 9, which passes through the center of the needle plate 10 and rotates relative to the needle plate 10. The key rod 9 cooperates with the channel formed by the connection between the outer key rod hole 4 and the inner key rod hole 16, and the front end shape of the key rod 9 corresponds to the bottom shape of the inner key rod hole 16. When the key is inserted into the lock shell 1, the key needle 11 unlocks the coding push block 3 and the locking block 6, and the key rod 9 cooperates with the inner key hole 7 to drive the lock core 5 to rotate, thereby finally unlocking.

[0104] In the process of unlocking, the key rod 9 needs to be rotated to transfer the torque from the key rod 9 to the lock core 5. However, the end of the key rod 9 is cylindrical, which is not convenient to grasp and rotate. Therefore, the above technical solution is optimized, and a key handle 12 is also provided at the end of the key rod 9. The key handle 12 contacts and rotates relatively with the needle plate 10. One of the functions of the key handle 12 is to drive the key rod 9 to rotate and transfer torque. The second function is to press against the needle plate 10, so that the key needle 11 on the needle plate 10 presses against the coding push block 3, and the coding push block 3 and the locking block 6 are positioned in the unlocking position, ensuring the relative movement trend of the lock core 5 and the lock housing 1.

[0105] In this embodiment, the key handle 12 is connected and fixed to the key rod 9 by a bayonet; the key handle 12 contacts the needle disk 10 and rotates relatively thereto, and structures such as balls and / or rollers are provided on the contact surface to reduce the friction between the key handle 12 and the needle disk 10, making relative movement easier.

[0106] The above technical solution is optimized. The adjacent needle disks 10 rotate relative to each other to change the layout of the key needles 11, which is equivalent to changing a set of unlocking passwords. During the rotation of the needle disk 10, a certain number of specific positions are set as unlocking password positions, that is, the needle disk 10 is provided with a spring groove 13 or a spring hole, and a spring spring 14 and a clamping marble 15 are arranged in the spring groove 13 or the spring hole. An annular groove is arranged on the adjacent needle disks 10, and the annular groove is connected to the spring groove 13 or the spring hole, and recessed positions are arranged at intervals in the annular groove. The spring spring 14 pushes the clamping marble 15 into the annular groove, and the clamping marble 15 slides in the annular groove. When the clamping marble 15 slides and is clamped into the recessed position, the adjacent needle disks 10 are clamped to each other.

[0107] In this embodiment, the number of the recessed positions is eight. Whenever the clamping marble 15 is clamped into a recessed position, the outer needle disk 10 and the inner needle disk 10 are combined to form a set of key needles 11 for unlocking.

[0108] In this embodiment, a spring groove 13 is provided on the needle disk 10, and corresponding spring grooves 13 are also provided on the contacting surfaces of adjacent needle disks 10, which together form a channel for the spring to extend and retract.

[0109] In the present embodiment, the above-mentioned technical solution is further optimized. While the number of layout schemes for the key needle 11 is increased, in order to improve the certainty of the user's own identification of the unlocking scheme, coding marks are provided on the needle disk 10 and / or the lock shell 1, and different combinations of the coding marks are used to determine whether it is a correct unlocking scheme and to determine a specific lock body that can be unlocked.

[0110] Embodiment 9:

[0111] like Fig.11As shown, this embodiment discloses a convertible key structure, which cooperates with the lock body in embodiments 1 to 3, and is intended to unlock the lock by combining and changing the key to correspond to the plug-in structure of the lock body. The key adopts a key pin 11 structure, and a variety of key structure changes can occur through the combination of the layout, length and activity change of the key pin 11. If the matching structure of the key and the lock body is not understood, the key cannot be directly used to unlock the lock. When the key is used to unlock the lock, an additional precautionary procedure occurs, so the security problem of the lock is transferred from the storage of the key to the use of the key, thereby improving the security level of the lock. This key structure can convert the structural lock hook, so one key can be used to open multiple lock bodies. For example, the above-mentioned lock body is installed in multiple door panels in a home, and the difference is that the layout of the key pin 11 used when unlocking is different; in this case, the disclosed key can change different key pin 11 layout structures to open the corresponding door panels respectively, which is very convenient.

[0112] The above-mentioned convertible key structure can be unlocked after being inserted into the above-mentioned lock body structure. Specifically, it includes a plurality of coaxially arranged needle disks 10, and the adjacent needle disks 10 rotate relatively. The needle disks 10 are provided with key pins 11, and the key pins 11 correspond to the outer key holes 2 one by one. After the key pins 11 are inserted into the outer key holes 2, they push the coding push block 3. When the key pins 11 completely enter the outer key holes 2, the contact surface of the coding push block 3 and the locking block 6 coincides with the connecting surface of the outer key holes 2 and the inner key holes 7, and the lock core 5 and the lock housing 1 can realize relative rotation.

[0113] This embodiment adopts a technical solution different from that of Embodiment 8, and the specific difference is:

[0114] In this embodiment, the above technical solution is optimized. In order to increase the layout of the key pin 11 corresponding to the unlocking code, a confusing key pin 11 can be used, that is, the key pin 11 rotates relative to the needle plate 10, and the key pin 11 is perpendicular to the needle plate 10 or fits with the needle plate 10 after rotation. In the partial unlocking solution, only part of the key pin 11 may be used, and the unused key pin 11 is rotated and fits with the needle plate 10.

[0115] At the same time, in order to facilitate the rotation of the key pins 11 and avoid collision, in this embodiment, the key pins on different needle disks are arranged in a staggered manner. For example, when the key pins 11 are arranged along the circumference of the needle disk 10, the key pins 11 on different needle disks 10 are arranged along different radial directions. This arrangement makes the key pins on different needle disks staggered, and when the inner key pins 11 rotate outward, they will not collide with the outer key pins, which is more convenient and practical.

[0116] The structures and connection relationships of other parts in this embodiment are the same as those in Embodiment 8 and will not be described again here.

[0117] Embodiment 10:

[0118] like Fig.12 As shown, this embodiment discloses a convertible key structure, which cooperates with the lock body in embodiments 1 to 3, and is intended to unlock the lock by combining and changing the key to correspond to the plug-in structure of the lock body. The key adopts a key pin 11 structure, and a variety of key structure changes can occur through the combination of the layout, length and activity change of the key pin 11. If the matching structure of the key and the lock body is not understood, the key cannot be directly used to unlock the lock. When the key is used to unlock the lock, an additional precautionary procedure occurs, so the security problem of the lock is transferred from the storage of the key to the use of the key, thereby improving the security level of the lock. This key structure can convert the structural lock hook, so one key can be used to open multiple lock bodies. For example, the above-mentioned lock body is installed in multiple door panels in a home, and the difference is that the layout of the key pin 11 used when unlocking is different; in this case, the disclosed key can change different key pin 11 layout structures to open the corresponding door panels respectively, which is very convenient.

[0119] The above-mentioned convertible key structure can be unlocked after being inserted into the above-mentioned lock body structure. Specifically, it includes a plurality of coaxially arranged needle disks 10, and the adjacent needle disks 10 rotate relatively. The needle disks 10 are provided with key pins 11, and the key pins 11 correspond to the outer key holes 2 one by one. After the key pins 11 are inserted into the outer key holes 2, they push the coding push block 3. When the key pins 11 completely enter the outer key holes 2, the contact surface of the coding push block 3 and the locking block 6 coincides with the connecting surface of the outer key holes 2 and the inner key holes 7, and the lock core 5 and the lock housing 1 can realize relative rotation.

[0120] This embodiment adopts a technical solution different from that of Embodiment 8, and the specific difference is:

[0121] like Fig.12 As shown, in this embodiment, the needle disk 10 comprises an inner needle disk and an outer needle disk, wherein the inner needle disk is in a boss shape, and the outer needle disk is sleeved on the inner needle disk and rotates relatively.

[0122] A disk cap 21 is also provided above the outer needle disk, which is sleeved on the inner needle disk and covers the end surface of the outer needle disk. The disk cap rotates coaxially with the inner needle disk and rotates relative to the outer needle disk. Specifically, after the disk cap is sleeved on the inner needle disk, the tightness between the disk cap and the outer needle disk can ensure their relative rotation. The disk cap and the inner needle disk are fixed by a latch, so that the disk cap and the inner needle disk can rotate coaxially.

[0123] Therefore, by adjusting the disk cap and the outer needle disk under this structure, the relative matching position of the outer needle disk and the inner needle disk can be adjusted, thereby changing the matching of the key needle and obtaining different unlocking schemes.

[0124] In this embodiment, the coding marks of the key are arranged on the circumferential side surfaces of the disk cap and the outer needle disk, and different coding mark combinations correspond to different unlocking layouts.

[0125] like Fig.14 As shown, a spoon plate 24 is arranged between the spoon handle and the plate cap, and rolling marbles are arranged on the spoon plate. The function of the rolling marbles is to make the relative rotation between the spoon handle and the plate cap smoother.

[0126] In this embodiment, a key cover 22 is provided for use with a key, and the key cover is connected with the needle plate by being locked. The key cover covers the key bar and the key needle of the key, which is convenient to carry and safer to keep.

[0127] In this embodiment, the inner needle disk and the outer needle disk are respectively provided with eight key needles. When adjusting, in view of the eight variable factors of the relative rotation of the inner and outer needle disks, the eight variable factors of the matching between the disk cap and the lock body, the eight variable factors of the confusing key needles on the inner needle disk, and the eight variable factors of the confusing key needles on the outer needle disk, 8 4 =4096 unlocking schemes, each of which can open a corresponding lock. Therefore, the use of this key can greatly improve the utilization value of the key, reduce the number of keys, and thus save resources.

[0128] The structures and connection relationships of other parts in this embodiment are the same as those in Embodiment 8 and will not be described again here.

[0129] The above-mentioned multiple embodiments are more preferred specific implementation methods that can be adopted by the present invention. The lock body and key structure disclosed in the above part are strong and reliable, and it is extremely difficult to crack and unlock the lock by technology; at the same time, the above-mentioned key can provide a variety of key needle layouts to cooperate with different lock bodies to achieve unlocking, realizing a one-key-for-multiple-purpose solution, integrating multiple keys into one key, eliminating the link of distinguishing keys, greatly improving the utilization efficiency of the key, and reducing resource consumption.

[0130] The lock body and the key disclosed above have a wide range of applications and can be used for door locks of houses, warehouses, boxes, cabinets, vehicles, etc.

[0131] The above are several embodiments of the present invention, but the present invention is not limited to the above optional embodiments. Those skilled in the art can arbitrarily combine the above methods to obtain other various embodiments. Anyone can obtain other various forms of embodiments under the enlightenment of the present invention. The above specific embodiments should not be understood as limiting the scope of protection of the present invention. The scope of protection of the present invention shall be based on the definition in the claims, and the description can be used to interpret the claims.

Claims

1. A convertible key structure, matched with a pinhole lock structure, characterized in that: The pinhole lock structure comprises a lock shell (1) and a lock core (5) rotatably arranged in the lock shell (1); a plurality of external keyholes (2) are arranged in the area of ​​the lock shell (1) not passed by the rotation axis of the lock core (5), and a coding push block (3) is slidably arranged in the external keyhole (2); an internal keyhole (7) corresponding to the position of the external keyhole (2) is arranged on the lock core (5), and a locking block (6) and an elastic member (8) are arranged in the internal keyhole (7); the internal keyhole (7) is coaxially connected to the external keyhole (2), the upper end of the locking block (6) passes through the connection between the external keyhole (2) and the internal keyhole (7) and contacts the coding push block (3), and the elastic member (8) makes the locking block (6) and the coding push block (3) press tightly; The convertible key structure comprises a plurality of coaxially arranged needle disks (10), wherein adjacent needle disks (10) rotate relative to each other, wherein a key needle (11) is arranged on the needle disk (10), wherein the key needle (11) corresponds to an outer key hole (2) one by one, and after the key needle (11) is inserted into the outer key hole (2), it pushes a coding push block (3), and when the key needle (11) completely enters the outer key hole (2), the contact surface between the coding push block (3) and the locking block (6) coincides with the connecting surface between the outer key hole (2) and the inner key hole (7), and the lock core (5) and the lock housing (1) can realize relative rotation; the key needle (11) rotates relative to the needle disk (10), and after the key needle (11) rotates, it is perpendicular to the needle disk (10) or fits with the needle disk (10); The key structure also includes a key rod (9), which passes through the center of the needle plate (10) and rotates relative to the needle plate (10). The key rod (9) cooperates with a channel formed by connecting an outer key rod hole (4) of the lock shell and an inner key rod hole (16) of the lock core. The front end shape of the key rod (9) corresponds to the bottom shape of the inner key rod hole (16); the cross section of the bottom of the inner key rod hole (16) is any shape other than a circle.

2. The convertible key structure according to claim 1, characterized in that: The needle disc (10) is provided with a spring groove (13) or a spring hole, in which a spring spring (14) and a clamping marble (15) are arranged, and an annular groove is arranged on adjacent needle discs (10), the annular groove is communicated with the spring groove (13) or the spring hole, and recessed positions are arranged at intervals in the annular groove, the spring spring (14) pushes the clamping marble (15) into the annular groove, and the clamping marble (15) slides in the annular groove, and when the clamping marble (15) slides and is clamped into the recessed position, the adjacent needle discs (10) are clamped to each other.

3. The convertible key structure according to claim 1, characterized in that: The needle disk (10) and / or the lock housing (1) are provided with coding marks.

4. The convertible key structure according to claim 1, characterized in that: The outer keyhole (2) is located on the lock plate surface of the lock housing (1) which is perpendicular to the rotation axis of the lock core (5), and the outer keyhole (2) is arranged on the circumference of a concentric circle.

5. The convertible key structure according to claim 1, characterized in that: A circular outer key rod hole (4) is provided on the lock housing (1) in an area corresponding to the rotation axis of the lock core (5); an inner key rod hole (16) is provided at the rotation axis of the lock core (5); and the bottom area of ​​the inner key rod hole (16) is less than or equal to the area at the opening of the inner key rod hole (16).

6. The convertible key structure according to claim 1, characterized in that: A reset device is arranged between the lock core and the lock housing, and the reset device makes the lock core and the lock housing rotate relative to each other and then return to the initial matching position.

7. The convertible key structure according to claim 1, characterized in that: A limiting structure is provided between the lock core and the lock housing, and the limiting structure enables the lock core and the lock housing to rotate relative to each other within a limited angle range.

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