Replaceable key lock

Abstract

The present invention belongs to the field of locks, and discloses a replaceable key lock including a lock shell, a lock core, a first key detector, a second key detector and a pusher; the lock shell is provided with an unlocking insertion position and a template insertion position, the pusher is associated with the unlocking insertion position and the template insertion position, the first key detector detects the unlocking key inserted into the unlocking insertion position, and the second key detector detects the template key inserted into the template insertion position through the pusher association; when the unlocking key is detected to be associated with the template key, the first key detector detects the association with the second key detector, causing the lock core to rotate; when the unlocking key is detected to be unassociated with the template key, the first key detector detects the unassociated with the second key detector, causing the lock core to be unable to rotate. The key can be replaced by matching the template key with the unlocking key.

Description

Technical Field

[0001] The invention belongs to the field of locks, in particular to a lock with a replaceable key. Background Art

[0002] Locks are indispensable in our daily life. They can be roughly divided into two categories, one is electronic locks and the other is mechanical locks. Since mechanical locks are cheap and flexible to use, they are widely used in different scenarios. For some scenarios, such as decoration scenes, the decoration workers need to open the door, but after the decoration is completed, the decoration workers cannot open the door, so a password lock can be used, or a decoration lock can be used. The decoration lock can be opened with a decoration key, but after the normal key is used to open the lock, the decoration key becomes invalid and the key cannot be replaced. Only the normal key can be used to open the lock. Summary of the invention

[0003] The purpose of the present invention is to improve the shortcomings of the prior art and provide a lock with replaceable keys to achieve key replacement.

[0004] The technical solution is as follows:

[0005] The replaceable key lock includes a lock shell, a lock core, a first key detector, a second key detector and a pusher, wherein the lock core, the first key detector, the second key detector and the pusher are all installed in the lock shell; the lock shell is provided with an unlocking insertion position and a template insertion position, the unlocking insertion position and the template insertion position are used to insert an unlocking key and a template key respectively, the detection part of the first key detector faces the unlocking insertion position, the detection part of the second key detector faces the template insertion position, the pusher is associated with the unlocking insertion position and the template insertion position, the first key detector detects the unlocking key inserted into the unlocking insertion position, and the second key detector detects the template key inserted into the template insertion position through the pusher association; when the unlocking key is detected to be associated with the template key, the first key detector detects the association with the second key detector, causing the lock core to rotate; when the unlocking key is detected to be unassociated with the template key, the first key detector detects the unassociated with the second key detector, causing the lock core to be unable to rotate.

[0006] In one of the embodiments, the thruster includes a force transmission block, one end of which is located at the unlocking position, and the other end of which acts on the second key detector.

[0007] In one of the embodiments, the thruster further comprises a third resetting elastic member, and the third resetting elastic member acts on the force transmission block.

[0008] In one embodiment, the first key detector includes a first curvature detection needle and a first reset elastic member, and the elastic force of the first reset elastic member acts on the first curvature detection needle; the second key detector includes a second curvature detection needle and a second reset elastic member, and the elastic force of the second reset elastic member acts on the second curvature detection needle.

[0009] In one embodiment, the first key detector further comprises a movable pull rod, the second key detector is provided with a second pull hook, the first key detector is associated with the second key detector for detection, and the second pull hook is engaged with the pull rod.

[0010] In one embodiment, the first key detector includes a holding block and a fourth reset elastic member, the holding block, the pull rod and the first curvature detection needle are stacked in sequence, the first reset elastic member acts on the holding block and is located on the side opposite to the pull rod, and the fourth reset elastic member acts on the pull rod.

[0011] In one embodiment, a first hook is disposed on the pull rod, and the first hook is engaged with the second hook.

[0012] The thickness of the first hook and the second hook is 0.5 mm to 1.5 mm.

[0013] In one embodiment, the first hook and the second hook are both provided with an inclined surface or a curved surface.

[0014] In one embodiment, the lock core includes a rotating component and a locking component, the rotating component is located in the unlocking position, and the locking component interacts with the second key detector.

[0015] In one embodiment, the lock core also includes a fifth reset elastic member, which acts on the locking component. The rotating component is provided with a card hole protruding outward, and the locking component is provided with a card column and a driving part. The driving part acts with the second key detector, and the card column cooperates with the card hole.

[0016] The technical solution provided by the present invention has the following advantages and effects:

[0017] The replaceable key lock is installed, which includes at least one set of unlocking keys and template keys, which are used in combination. The template key is inserted into the template insertion position, and it can only be opened by the unlocking key. The specific process is that the template key is inserted into the template insertion position and reserved in this position. When it is necessary to unlock, the unlocking key is inserted into the unlocking insertion position, and the unlocking key is continued to be pushed. The unlocking key is detected by the first key detector, and the unlocking key pushes the pusher at the same time. Under the action of the pusher, the second key detector detects the template key. The first key detector is associated with the second key detector, so when the unlocking key and the template key detected by the first key detector and the second key detector are associated, the unlocking key can continue to turn the lock to unlock; on the contrary, if they are not associated, the unlocking key cannot turn the lock. Therefore, when the key needs to be replaced, only a different set of unlocking keys and template keys need to be replaced to achieve the purpose of replacing the key. Therefore, even if the decorator is given a key during decoration, there is no need to worry about the key being burned. Only another set of unlocking keys and template keys need to be replaced to achieve the purpose of changing a new lock. Therefore, the application scenarios are very wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings herein show specific examples of the technical solutions described in the present invention, and together with the specific implementation methods, constitute a part of the specification, and are used to explain the technical solutions, principles and effects of the present invention.

[0019] Unless otherwise specified or defined, the same reference numerals in different drawings represent the same or similar technical features, and the same or similar technical features may also be represented by different reference numerals.

[0020] Figure 1 is a schematic diagram of the internal main structure when the first key detector and the second key detector are associated with each other according to an embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of the internal top view structure when the first key detector and the second key detector are associated with each other according to an embodiment of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the lock core state when the first key detector and the second key detector are associated with each other in an embodiment of the present invention;

[0023] Figure 4 is a left-view structural schematic diagram of a first key detector and a second key detector in an embodiment of the present invention when they are associated;

[0024] Figure 5 is a schematic diagram of the decomposed structure of an embodiment of the present invention;

[0025] Figure 6is an enlarged schematic diagram of the associated part when the first key detector and the second key detector of the embodiment of the present invention are associated;

[0026] Figure 7 is an enlarged schematic diagram of the associated parts when the first key detector and the second key detector of the embodiment of the present invention are not associated;

[0027] Figure 8 It is a schematic diagram of an enlarged associated part when the first key detector and the second key detector of the embodiment of the present invention are reset and associated.

[0028] Description of reference numerals:

[0029] 10. First key detector; 11. First arc detection needle; 12. First reset elastic member; 13. Pull rod; 131. First pull hook; 1311. Inclined surface; 14. Holding block; 15. Fourth reset elastic member; 20. Second key detector; 21. Second arc detection needle; 22. Second reset elastic member; 23. Second pull hook; 24. Support frame; 30. Lock shell; 31. Unlocking position; 32. Template position; 40. Lock core; 41. Rotating component; 411. Clamping hole; 42. Locking component; 421. Clamping column; 422. Driving unit; 43. Fifth reset elastic member; 50. Pusher; 51. Force transmission block; 52. Third reset elastic member; 60. Unlocking key; 70. Template key. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0031] Unless otherwise specified or defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art. In the case of combining the technical solution of the present invention with a realistic scenario, all technical and scientific terms used herein may also have meanings corresponding to the purpose of implementing the technical solution of the present invention.

[0032] Unless otherwise specified or defined, the "first, second..." used in this article is merely used to distinguish names and does not represent a specific quantity or order.

[0033] Unless specifically stated or defined otherwise, the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] It should be noted that when a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there can be a central component; when an component is considered to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time; when an component is considered to be "installed on" another component, it can be directly installed on the other component or there can be a central component at the same time. When an component is considered to be "set on" another component, it can be directly set on the other component or there can be a central component at the same time.

[0035] like Figures 1 to 5 As shown, the replaceable key lock includes a lock shell 30, a lock core 40, a first key detector 10, a second key detector 20 and a pusher 50, wherein the lock core 40, the first key detector 10, the second key detector 20 and the pusher 50 are all installed in the lock shell 30; the lock shell 30 is provided with an unlocking insertion position 31 and a template insertion position 32, wherein the unlocking insertion position 31 and the template insertion position 32 are used to insert an unlocking key 60 and a template key 70 respectively, wherein the detection part of the first key detector 10 faces the unlocking insertion position 31, the detection part of the second key detector 20 faces the template insertion position 32, and the pusher 50 is associated with the unlocking insertion position 31. On the unlocking position 31 and the template position 32, the first key detector 10 detects the unlocking key 60 inserted into the unlocking position 31, and is associated through the pusher 50, and the second key detector 20 detects the template key 70 inserted into the template position 32; when it is detected that the unlocking key 60 is associated with the template key 70, the first key detector 10 and the second key detector 20 detect that they are associated, causing the lock core 40 to rotate; when it is detected that the unlocking key 60 is not associated with the template key 70, the first key detector 10 and the second key detector 20 detect that they are not associated, causing the lock core 40 to be unable to rotate.

[0036] The replaceable key lock is installed, which includes at least one set of unlocking key 60 and template key 70, which are used in combination. The template key 70 is inserted into the template insertion position 32, and can only be opened by the unlocking key 60. The specific process is that the template key 70 is inserted into the template insertion position 32 and reserved in this position. When it is necessary to unlock, the unlocking key 60 is inserted into the unlocking insertion position 31, and the unlocking key 60 is continued to be pushed. The unlocking key 60 is detected by the first key detector 10, and the unlocking key 60 pushes the pusher 50 at the same time. Under the action of the pusher 50, the second key detector 20 detects the template key 70. The first key detector 10 is associated with the second key detector 20, so when the unlocking key 60 and the template key 70 detected by the first key detector 10 and the second key detector 20 are associated, the unlocking key 60 can continue to rotate the lock core 40 to unlock; on the contrary, if they are not associated, the unlocking key 60 cannot rotate the lock core 40. Therefore, when the key needs to be replaced, the purpose of replacing the key can be achieved by simply replacing a different set of unlocking keys 60 and template keys 70. Therefore, even if the keys are given to the decorators during renovation, there is no need to worry about the keys being burned. Only another set of unlocking keys 60 and template keys 70 can be replaced to achieve the purpose of changing a new lock.

[0037] For example, it can be used in rental houses. Since the turnover rate of rental houses is very high, landlords generally do not replace the door locks after the old tenants move out, so the new tenants are prone to safety hazards. If the new tenants change the door locks by themselves, it will increase the cost, and the general tenants are not happy. Therefore, by adopting the method of this solution, the purpose of replacing different unlocking keys 60 can be achieved by replacing the template key 70, which provides a safety guarantee for the new tenants and greatly saves the cost of changing the locks. The effect is very significant. Not only that, for some public places, the replaceable key locks of this solution can be uniformly installed, and people are not afraid of other people having matching unlocking keys 60 when storing things, which improves safety. Therefore, the application scenarios are very wide.

[0038] like Figure 1 and Figure 5 As shown, the pusher 50 includes a force transmission block 51, one end of which is located at the unlocking insertion position 31, and the other end acts on the second key detector 20. The purpose of the force transmission block 51 is to feed back the advancing distance to the second key detector 20 when the unlocking key 60 is pushed.

[0039] Specifically, Figure 5 As shown, the pusher 50 further includes a third resetting elastic member 52, and the third resetting elastic member 52 acts on the force transmission block 51. After the force transmission block 51 is pushed by the unlocking key 60, the unlocking key 60 is pulled out, and the force transmission block 51 needs to be reset, so the third resetting elastic member 52 plays the role of resetting the force transmission block 51.

[0040] like Figures 1 to 5 As shown, the first key detector 10 includes a first arc detection needle 11 and a first reset elastic member 12, and the first reset elastic member 12 acts on the first arc detection needle 11; the second key detector 20 includes a second arc detection needle 21 and a second reset elastic member 22, and the second reset elastic member 22 acts on the second arc detection needle 21. During operation, the first arc detection needle 11 directly presses against the unlocking key 60, and the first reset elastic member 12 provides pre-pressure to the first arc detection needle 11, so when the first arc detection needle 11 detects the arc of the unlocking key 60 rising, the first arc detection needle 11 rises and compresses the first reset elastic member 12, and when the arc of the unlocking key 60 falling is detected again, the first arc detection needle 11 falls under the action of the first reset elastic member 12. Therefore, under the action of the pusher 50, the second arc detection needle 21 changes from initially pressing against the template key 70 to detecting the arc on the template key 70, and detects whether the unlocking key 60 and the template key 70 are associated through the arc detection of the sliding of the first arc detection needle 11 and the second arc detection needle 21. Among them, the second key detector 20 also includes a support frame 24, and the second reset elastic member 22 is associated with the support frame 24 and the second arc detection needle 21, and the support frame 24 is pushed by the force transmission block 51.

[0041] like Figures 1 to 5 As shown, the first key detector 10 further includes a movable pull rod 13, and the second key detector 20 is provided with a second pull hook 23. The first key detector 10 is associated with the second key detector 20 for detection, and the second pull hook 23 is engaged with the pull rod 13. The association between the first key detector 10 and the second key detector 20 means that the pull rod 13 is engaged with the second hook; the non-association means that the engagement relationship between the pull rod 13 and the second hook is released, so there is no association between the first key detector 10 and the second key detector 20. Specifically, in this embodiment, the second pull hook 23 is provided on the second arc detection needle 21, so the distance moved by the second arc detection needle 21 is the distance moved by the second pull hook 23.

[0042] Among them Figure 1 and Figure 5As shown, the first key detector 10 includes a holding block 14 and a fourth reset elastic member 15. The holding block 14, the pull rod 13 and the first curvature detection needle 11 are stacked in sequence. The first reset elastic member 12 acts on the holding block 14 and is located on the side opposite to the pull rod 13. The fourth reset elastic member 15 acts on the pull rod 13. The function of the holding block 14 is to prevent the pull rod 13 from being directly held by the first reset elastic member 12, which may cause the problem of being unable to move or being stuck. The fourth reset elastic member 15 is used to reset the pull rod 13. Once the pull rod 13 is released from the second hook 23, the pull rod 13 is quickly reset under the action of the fourth reset elastic member 15. After the pull rod 13 is pulled, it finally contacts the lock core 40 to release the locking relationship of the lock core 40. At the same time, the above arrangement also ensures that the moving distance of the first curvature detection needle 11 is the same as that of the pull rod 13.

[0043] like Figure 1 as well as Figures 5 to 8 As shown, the pull rod 13 is provided with a first hook 131, and the first hook 131 is engaged with the second hook 23, and the thickness of the first hook 131 and the second hook 23 is 1 mm to 4 mm. When engaged, the contact height is also 1 mm to 4 mm, so the detection allowable range corresponding to the arc is 0.5 mm to 1.5 mm, but this accuracy is not particularly high. Of course, a larger range can be used for the case where the accuracy requirement is not high. In other embodiments, an amplifier can also be used to amplify the detected arc, and then feedback to the first hook 131 and the second hook 23. For example, the lever principle can be used to provide different force arms to amplify the detected arc through the force arm distance.

[0044] like Figures 1 to 5 As shown, the lock core 40 includes a rotating component 41 and a locking component 42, wherein the rotating component 41 is located in the unlocking insertion position 31, and the locking component 42 interacts with the second key detector 20. When the rotating component 41 is rotatable, it can be unlocked, but it is restricted by the locking component 42. If the locking component 42 is not released, the rotating component 41 cannot rotate. However, under the action of the second key detector 20, the locking component 42 can be acted on, so as to control the movement of the locking component 42 and thus release the restriction on the rotating component 41.

[0045] Specifically, the lock core 40 further includes a fifth resetting elastic member 43, which acts on the locking member 42, the rotating member 41 is provided with a card hole 411 protruding outward, the locking member 42 is provided with a card column 421 and a driving part 422, the driving part 422 acts with the second key detector 20, and the card column 421 cooperates with the card hole 411. The card column 421 of the condensation member is inserted into the card hole 411, thereby limiting the rotation of the rotating member 41. The driving part 422 acts with the second key detector 20, and is driven by the second key detector 20 to move the locking member 42, so that the card column 421 is pulled out of the card hole 411. In addition, the fifth resetting elastic member 43 provides a pre-pressure to the driving part 422, so that the card column 421 is always inserted into the card hole 411 in a natural state.

[0046] In order to better understand the relationship between the first key detector 10 and the second key detector 20, see Figures 1 to 3 And see Figures 6 to 8 As shown, there are three position states of the first hook 131 and the second hook 23. Moreover, the effective unlocking arc and height of the unlocking key 60 and the template key 70 in this embodiment are the same. The associated state and the non-associated state of the first key detector 10 and the second key detector 20 are described in detail below.

[0047] like Figure 1 , Figure 2 and 6 As shown, the first hook 131 and the second hook 23 are in a state of being engaged, that is, when the first key detector 10 is associated with the second key detector 20. If the first arc detection needle 11 detects the arc of the unlocking key 60, correspondingly, under the action of the force transmission block 51, the second arc detection needle 21 is pushed to detect the template key 70. Since the arcs of the first arc detection needle 11 and the second arc detection needle 21 are the same at this time, the corresponding up and down floating distances of the first hook 131 and the second hook 23 are the same, ensuring that the first hook 131 and the second hook 23 are always engaged. The second hook 23 is pushed by the force transmission block 51, and the second hook 23 continues to move and pull the first hook 131 to move until the pull rod 13 provided with the first hook 131 contacts the driving part 422 of the locking component 42, and under the action of the pull rod 13, the driving part 422 is pushed to pull the clamping column 421 out of the clamping hole 411, and then the rotating component 41 rotates to complete the unlocking.

[0048] like Figure 7 and Figure 8 As shown, when the unlocking key 60 and the template key 70 are different, that is, the up-and-down displacement between the first arc detection needle 11 and the second arc detection needle 21 is different, resulting in the up-and-down displacement between the first hook 131 and the second hook 23 being different, as shown in FIG. Figure 7 That is, the first hook 131 is unhooked from the second hook 23. At this time, the pull rod 13 provided with the first hook 131 is reset under the action of the fourth reset elastic member 15. Therefore, no matter whether the unlocking key 60 continues to be inserted, the first key detector 10 and the second key detector 20 are no longer associated, so the locking component 42 cannot be pushed further, and thus the unlocking fails. Figure 8 As shown, when the first hook 131 and the second hook 23 are to be reset and engaged again, one of them needs to be lifted up, so the first hook 131 and the second hook 23 are both provided with an inclined surface 1311 or an arc surface, which can provide an upward or downward component force when in contact to achieve a lifting effect.

[0049] For some locks, such as the common pin locks, people have been continuously improving the pins to improve their security, but they can still be opened by the current keyless unlocking techniques. However, the curvature detection method adopted in this solution does not allow keyless unlocking personnel to know the curvature of the template key, so no matter how they test, they cannot achieve the purpose of unlocking, which greatly improves the security of the lock.

[0050] Among them, in this embodiment, the first resetting elastic member 12, the second resetting elastic member 22, the third resetting elastic member 52, the fourth resetting elastic member 15 and the fifth resetting elastic member 43 are all springs providing elastic force, which is of course not limited to springs.

[0051] When quoting drawing descriptions, new features that appear are described; in order to avoid repeated quotations of drawings resulting in less concise descriptions, features that have been described clearly will not be quoted in the drawings one by one.

[0052] The purpose of the above embodiments is to exemplarily reproduce and deduce the technical solution of the present invention, and to fully describe the technical solution, purpose and effect of the present invention. Its purpose is to make the public understand the disclosed content of the present invention more thoroughly and comprehensively, and it does not limit the scope of protection of the present invention.

[0053] The above embodiments are not exhaustive enumerations of the present invention, and there may be multiple other implementations not listed. Any replacement and improvement made without violating the concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. Replaceable key lock, characterized in that: It comprises a lock housing, a lock core, a first key detector, a second key detector and a pusher, wherein the lock core, the first key detector, the second key detector and the pusher are all installed in the lock housing; The lock housing is provided with an unlocking insertion position and a template insertion position, the unlocking insertion position and the template insertion position are used to insert an unlocking key and a template key respectively, the detection part of the first key detector faces the unlocking insertion position, the detection part of the second key detector faces the template insertion position, the pusher is associated with the unlocking insertion position and the template insertion position, the first key detector detects the unlocking key inserted into the unlocking insertion position, and the second key detector detects the template key inserted into the template insertion position through the pusher association; It is detected that the unlocking key is associated with the template key, and the first key detector detects the association with the second key detector, causing the lock core to rotate; it is detected that the unlocking key is not associated with the template key, and the first key detector detects the non-association with the second key detector, causing the lock core to be unable to rotate; The thruster comprises a force transmission block, one end of which is located at the unlocking insertion position, and the other end of which acts on the second key detector; The thruster further comprises a third resetting elastic member, and the third resetting elastic member acts on the force transmission block; The first key detector includes a first curvature detection needle and a first reset elastic member, and the elastic force of the first reset elastic member acts on the first curvature detection needle; the second key detector includes a second curvature detection needle and a second reset elastic member, and the elastic force of the second reset elastic member acts on the second curvature detection needle.

2. The key-changeable lock according to claim 1, characterized in that: The first key detector further comprises a movable pull rod, the second key detector is provided with a second pull hook, the first key detector is associated with the second key detector for detection, and the second pull hook is buckled with the pull rod.

3. The key-changeable lock according to claim 2, characterized in that: The first key detector includes a holding block and a fourth reset elastic member. The holding block, the pull rod and the first arc detection needle are stacked in sequence. The first reset elastic member acts on the holding block and is located on the side opposite to the pull rod. The fourth reset elastic member acts on the pull rod.

4. The key-changeable lock according to claim 2, characterized in that: The pull rod is provided with a first pull hook, and the first pull hook is buckled with the second pull hook.

5. The key-changeable lock according to claim 4, characterized in that: The first hook and the second hook are both provided with an inclined surface or a curved surface.

6. The key-changeable lock according to claim 1, characterized in that: The lock core includes a rotating component and a locking component. The rotating component is located in the unlocking position, and the locking component interacts with the second key detector.

7. The key-changeable lock according to claim 6, characterized in that: The lock core also includes a fifth reset elastic member, which acts on the locking component. The rotating component is provided with a card hole protruding outward. The locking component is provided with a card column and a driving part. The driving part acts with the second key detector, and the card column cooperates with the card hole.

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