A nanny lock capable of switching use states

Abstract

The invention relates to a nanny lock with switchable use states, comprising a lock core, a master key and a nanny key. The lock core comprises a lock shell, a pull, an outer lock core and an inner lock core. The lock shell and the outer lock core are matched through N groups of marble assemblies distributed along the key insertion direction, and each group of marble assemblies comprises marbles, first flat beads and second flat beads. A conversion ring which is sleeved on the outer lock core is also arranged in the lock shell, and at least one conversion hole which is aligned with the marble hole is arranged on the conversion ring. At least one group of marble assemblies among several groups of marble assemblies is matched with the conversion hole, and at least one group of marble assemblies among the remaining several groups of marble assemblies also comprises supplementary beads which are matched with the second flat beads. The master key can drive the conversion ring to rotate to switch the marbles to match with the first flat beads or the second flat beads, and then switch the lock state to control whether the nanny can open the lock, thereby controlling the nanny's use time and solving the worry problem when changing the nanny, and the safety is high.

Description

[Technical field]

[0002] The invention relates to the technical field of locks, in particular to a nanny lock with switchable use states. [Background technology]

[0004] The nanny lock in the prior art generally has only two levels of keys (master key and nanny key). When the nanny has the nanny key, she can unlock the lock and enter at any time. The owner cannot control the time when the nanny enters the house, so the security is low. In addition, when the nanny needs to be replaced, the nanny key needs to be recovered; but users often worry that the nanny may steal the key, so they usually replace the lock when replacing the nanny, which has the problem of high cost and troublesome replacement of the lock.

[0005] Therefore, it is urgent to design a lock that can control whether the nanny can open the lock by switching the state. This can control the nanny's usage time and solve the worries when changing the nanny, with high security. [Summary of the invention]

[0007] In order to solve the above problems, the present invention provides a nanny lock with switchable use states, which can switch the lock state by a key to control whether the nanny can open the lock, and has high security.

[0008] To achieve the above purpose, the present invention provides the following technical solutions:

[0009] A nanny lock with switchable use states, comprising a lock core and a master key 71 and a nanny key 72 matched with the lock core, the lock core comprising a lock shell 1, a pull 2 ​​arranged in an open groove in the middle of the lock shell 1, and an outer lock core 3 and an inner lock core 4 arranged in the lock shell 1 and located on both sides of the pull 2, the lock shell 1 and the outer lock core 3 are matched through N groups of marble assemblies 5 distributed along the key insertion direction, the outer lock core 3 is provided with N marble holes 31 corresponding to the marble assemblies 5 one-to-one, the lock shell 1 is provided with N first flat bead holes 11 corresponding to the marble assemblies 5 one-to-one and N second flat bead holes 12 corresponding to the marble assemblies 5 one-to-one, each group of the marble assemblies 5 includes a marble 51 arranged in the marble hole 31, ... The first flat bead 52 and the first flat bead reset spring 53 in the first flat bead hole 11 and the second flat bead 54 and the second flat bead reset spring 55 arranged in the second flat bead hole 12; the axis of the first flat bead hole 11 and the axis of the second flat bead hole 12 matched with the same group of marble assembly 5 are on the same cross section and the angle between the two is α°; the lock housing 1 is also provided with a conversion ring 6 mounted on the outer lock core 3, and the conversion ring 6 is provided with at least one conversion hole 60 aligned with the marble hole 31, at least one group of marble assemblies 5 in several groups matches with the conversion hole 60, and at least one group of marble assemblies 5 in the remaining several groups also includes a supplementary bead 56 matched with the second flat bead 54, and N is a positive integer;

[0010] When the master key 71 is inserted, the upper end of the ball hole 31 extends into the conversion hole 60, so that the conversion ring 6 can rotate together with the outer lock core 3; when the nanny key 72 is inserted, the lower end of the first flat bead 52 or the lower end of the second flat bead 54 extends into the conversion hole 60, so that the conversion ring 6 cannot rotate together with the outer lock core 3;

[0011] When the marble hole 31, the conversion hole 60 and the first flat bead hole 11 are relatively aligned, the lock core is in a non-nanny opening state. Inserting the master key 71 can rotate the lock to unlock it, but inserting the nanny key 72 cannot rotate the lock to unlock it. When the marble hole 31, the conversion hole 60 and the second flat bead hole 12 are relatively aligned, the lock core is in a nanny-openable state. Inserting the master key 71 or the nanny key 72 can rotate the lock to unlock it.

[0012] As a preferred embodiment, it is further defined as: the lock housing 1 is provided with an outer lock gall hole 13 for accommodating the outer lock gall 3 , and the inner wall of the outer lock gall hole 13 is concavely formed with a conversion groove 10 for accommodating the conversion ring 6 .

[0013] As a preferred embodiment, it is further defined as: the axis of the first flat bead hole 11 and the axis of the second flat bead hole 12 intersect on the rotation center line of the outer locking core 3.

[0014] As a preferred embodiment, it is further defined as: the α is 30±5.

[0015] As a preferred embodiment, it is further defined as: it also includes a secondary key 73. When the nanny key 72 is inserted, the lower end of the first flat bead 52 or the lower end of the second flat bead 54 extends into the conversion hole 60 so that the conversion ring 6 cannot rotate together with the outer lock core 3; the secondary key 73 can be rotated to unlock the lock core when the lock core is in a non-nanny opening state or in a nanny opening state.

[0016] As a preferred embodiment, it is further defined as: the lock shell 1 and the inner lock core 4 are also matched through several groups of marble assemblies 5 distributed along the key insertion direction; the distribution of the marble assemblies 5 arranged between the lock shell 1 and the inner lock core 4 is the same as that of the marble assemblies 5 arranged between the lock shell 1 and the outer lock core 3 along the key insertion direction.

[0017] As a preferred embodiment, it is further defined as: the lock shell 1 is also provided with the conversion ring 6 mounted on the inner lock core 4, the lock shell 1 is provided with an inner lock core hole 14 for accommodating the inner lock core 4, and the inner wall of the inner lock core hole 14 is concavely formed with a conversion groove 10 for accommodating the conversion ring 6.

[0018] The beneficial effects of the present invention are as follows: each group of marble assemblies created by the present invention includes marbles, a first flat bead and a second flat bead; a conversion ring mounted on the outer lock core is also provided in the lock shell, and at least one conversion hole aligned with the marble hole is provided on the conversion ring; at least one group of marble assemblies among several groups of marble assemblies cooperates with the conversion hole, and at least one group of marble assemblies among the remaining several groups of marble assemblies also includes a supplementary bead that cooperates with the second flat bead; the master key can drive the conversion ring to rotate to switch the marbles to cooperate with the first flat bead or the second flat bead, and then switch the lock state to control whether the nanny can open the lock, thereby controlling the nanny's use time and solving the worry problem when changing the nanny, and the safety is high.

Brief Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the structure of the lock cylinder inserting the master key;

[0021] Figure 2 It is a schematic diagram of the structure of the lock cylinder;

[0022] Figure 3 It is a schematic diagram of the structure of the lock cylinder inserting the nanny key;

[0023] Figure 4 It is one of the longitudinal cross-sectional views of the master key inserted in the non-nanny-open state;

[0024] Figure 5 The second longitudinal section view of the non-nanny-open state with the master key inserted;

[0025] Figure 6 It is one of the longitudinal cross-sectional views of the nanny inserting the master key in the openable state;

[0026] Figure 7 It is the second longitudinal section view of the nanny inserting the master key in the open state;

[0027] Figure 8 is one of the longitudinal cross-sectional views of the non-nanny-open state with the nanny key inserted;

[0028] Fig. 9 The second longitudinal section view of the non-nanny-open state with the nanny key inserted;

[0029] Fig.10 It is one of the longitudinal cross-sectional views of the nanny in the openable state with the nanny key inserted;

[0030] Fig.11 is the second longitudinal cross-sectional view of the nanny in the open state with the nanny key inserted;

[0031] Fig.12 It is one of the longitudinal cross-sectional views of the non-nanny opening state with the secondary key inserted;

[0032] Fig.13 The second longitudinal section view of the non-nanny opening state with the secondary key inserted;

[0033] Fig.14 It is one of the longitudinal cross-sectional views of the nanny inserting the vice key in the openable state;

[0034] Fig.15 This is the second longitudinal section view of the nanny inserting the secondary key in the open state;

[0035] Fig.16 It is a schematic diagram of the structure of the master key;

[0036] Fig.17 This is a schematic diagram of the structure of the nanny key;

[0037] Fig.18 It is a schematic diagram of the structure of the secondary key. [Specific implementation method]

[0039] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0040] As attached Figure 1 To Attachment Fig.18As shown, a nanny lock with switchable use states includes a lock core and a master key 71 and a nanny key 72 adapted to the lock core, the lock core includes a lock shell 1, a pull 2 ​​arranged in an open groove in the middle of the lock shell 1, and an outer lock core 3 and an inner lock core 4 arranged in the lock shell 1 and located on both sides of the pull 2, the lock shell 1 and the outer lock core 3 are matched through N groups of marble assemblies 5 distributed along the key insertion direction, the outer lock core 3 is provided with N marble holes 31 corresponding to the marble assemblies 5 one-to-one, the lock shell 1 is provided with N first flat bead holes 11 corresponding to the marble assemblies 5 one-to-one and N second flat bead holes 12 corresponding to the marble assemblies 5 one-to-one, each group of the marble assemblies 5 includes a marble 51 arranged in the marble hole 31, a marble 51 arranged in the marble hole 31, and a second flat bead hole 12 corresponding to the marble assemblies 5 one-to-one. The first flat bead 52 and the first flat bead reset spring 53 in the first flat bead hole 11 and the second flat bead 54 and the second flat bead reset spring 55 arranged in the second flat bead hole 12; the axis of the first flat bead hole 11 and the axis of the second flat bead hole 12 matched with the same group of marble assembly 5 are on the same cross section and the angle between the two is α°; the lock housing 1 is also provided with a conversion ring 6 mounted on the outer lock core 3, and the conversion ring 6 is provided with at least one conversion hole 60 aligned with the marble hole 31, at least one group of marble assemblies 5 in several groups matches with the conversion hole 60, and at least one group of marble assemblies 5 in the remaining several groups also includes a supplementary bead 56 matched with the second flat bead 54, and N is a positive integer;

[0041] When the master key 71 is inserted, the upper end of the ball hole 31 extends into the conversion hole 60, so that the conversion ring 6 can rotate together with the outer lock core 3; when the nanny key 72 is inserted, the lower end of the first flat bead 52 or the lower end of the second flat bead 54 extends into the conversion hole 60, so that the conversion ring 6 cannot rotate together with the outer lock core 3;

[0042] When the marble hole 31, the conversion hole 60 and the first flat bead hole 11 are relatively aligned, the lock core is in a non-nanny opening state, and the master key 71 can be inserted to rotate and unlock, and the nanny key 72 cannot be inserted to rotate and unlock; when the marble hole 31, the conversion hole 60 and the second flat bead hole 12 are relatively aligned, the lock core is in a nanny opening state, and the master key 71 or the nanny key 72 can be inserted to rotate and unlock. The master key can drive the conversion ring to rotate and switch the marble to cooperate with the first flat bead or the second flat bead, and then switch the lock state to control whether the nanny can unlock, which can control the nanny's use time and solve the worry problem when changing the nanny, with high security.

[0043] In this embodiment, the lock housing 1 is provided with an outer locking gall hole 13 for accommodating the outer locking gall 3, and the inner wall of the outer locking gall hole 13 is concave to form a conversion groove 10 for accommodating the conversion ring 6, and the structure space is compact. Of course, a groove can also be provided on the outer peripheral surface of the outer locking gall hole 13 to install the conversion ring 6.

[0044] In this embodiment, the axis of the first flat bead hole 11 and the axis of the second flat bead hole 12 intersect on the rotation center line of the outer lock core 3, so that when the outer lock core 3 rotates, it can ensure that the marble hole 31 can be aligned with the first flat bead hole 11 or the second flat bead hole 12. In this embodiment, the axis of the first flat bead hole 11 and the axis of the second flat bead hole 12 are on the same cross section and the angle between the two is α°. When the size of the lock shell 1 meets the requirements for installing the marble assembly 5, α° can be any angle, such as a lock shell with a larger and wider size. In this embodiment, the size of the lock shell used is smaller, and there is enough space at the upper ends of the outer lock core 3 and the inner lock core 4 to install the marble assembly 5. Therefore, the α is 30±5, and the α° in the attached figure of this embodiment is 30°.

[0045] In this embodiment, in order to prevent family members (especially the elderly and children) from pulling out the main key 71 when the lock is not turned into place (the bead hole 31 and the first flat bead hole 11 are not aligned) during use, the nanny lock also includes a sub-key 73. When the nanny key 72 is inserted, the lower end of the first flat bead 52 or the lower end of the second flat bead 54 extends into the conversion hole 60 so that the conversion ring 6 cannot rotate with the outer lock core 3; the sub-key 73 can be rotated to unlock the lock when the lock core is in a non-nanny opening state or in a nanny opening state, but cannot switch the state of the nanny lock.

[0046] In this embodiment, the lock shell 1 and the inner lock core 4 can be linked by other means without inserting a key, such as a knob structure, such as the knob structure disclosed in the unlocking and configuration control method of a key-inserting smart lock with a unique identity authentication ID by the applicant in the Chinese invention patent publication number CN110094113B. The lock shell 1 and the inner lock core 4 are also matched by several groups of marble assemblies 5 distributed along the key insertion direction, and locked by the key. The marble assemblies 5 arranged between the lock shell 1 and the inner lock core 4 are distributed in the same direction as the marble assemblies 5 arranged between the lock shell 1 and the outer lock core 3 along the key insertion direction. The lock shell 1 is also provided with the conversion ring 6 mounted on the inner lock core 4, and the lock shell 1 is provided with an inner lock core hole 14 for accommodating the inner lock core 4, and the inner wall of the inner lock core hole 14 is also concave to form a conversion groove 10 for accommodating the conversion ring 6. For the convenience of users, the teeth on the front of the main key 71 are the same as those on the back, the teeth on the front of the nanny key 72 are the same as those on the back, the teeth on the front of the secondary key 73 are the same as those on the back, and the structure between the lock shell 1 and the inner lock core 4 is also the same as the structure between the lock shell 1 and the outer lock core 3.

Claims

1. A nanny lock capable of switching between use states, comprising a lock core and a master key (71) and a nanny key (72) adapted to the lock core, the lock core comprising a lock housing (1), a puller (2) arranged in an opening groove in the middle of the lock housing (1), and an outer lock core (3) and an inner lock core (4) arranged in the lock housing (1) and located on both sides of the puller (2), the lock housing (1) and the outer lock core (3) being matched by N groups of marble assemblies (5) distributed along a key insertion direction, characterized in that The outer lock core (3) is provided with N marble holes (31) corresponding one-to-one with the marble assemblies (5); the lock housing (1) is provided with N first flat ball holes (11) corresponding one-to-one with the marble assemblies (5) and N second flat ball holes (12) corresponding one-to-one with the marble assemblies (5); each group of the marble assemblies (5) comprises a marble (51) arranged in the marble hole (31), a first flat ball (52) and a first flat ball return spring (53) arranged in the first flat ball hole (11), and a second flat ball (54) and a second flat ball return spring (55) arranged in the second flat ball hole (12); and the same group of the marble assemblies (5) is provided with a plurality of first flat ball holes (11) and a plurality of second flat ball holes (12). The axis of the first flat bead hole (11) and the axis of the second flat bead hole (12) that match the component (5) are on the same cross section and the angle between the two is α°; the lock housing (1) is also provided with a conversion ring (6) mounted on the outer lock core (3), the conversion ring (6) is provided with at least one conversion hole (60) aligned with the marble hole (31), at least one group of the marble assemblies (5) among the plurality of groups of the marble assemblies (5) matches the conversion hole (60), and at least one group of the remaining plurality of groups of the marble assemblies (5) further includes a supplementary bead (56) that matches the second flat bead (54), and N is a positive integer; When the master key (71) is inserted, the upper end of the marble hole (31) extends into the conversion hole (60), so that the conversion ring (6) can rotate together with the outer lock core (3); when the nanny key (72) is inserted, the lower end of the first flat bead (52) or the lower end of the second flat bead (54) extends into the conversion hole (60), so that the conversion ring (6) cannot rotate together with the outer lock core (3); when the marble hole (31), the conversion hole (60) and the first flat bead hole (11) are relatively aligned, the lock core is in a non-nanny opening state, and the lock can be rotated to unlock by inserting the master key (71), but cannot be rotated to unlock by inserting the nanny key (72); when the marble hole (31), the conversion hole (60) and the second flat bead hole (12) are relatively aligned, the lock core is in a nanny-openable state, and the lock can be rotated to unlock by inserting the master key (71) or the nanny key (72).

2. The nanny lock with switchable use status according to claim 1 is characterized in that The lock housing (1) is provided with an outer lock core hole (13) for accommodating the outer lock core (3), and the inner wall of the outer lock core hole (13) is concavely formed with a conversion groove (10) for accommodating the conversion ring (6).

3. The nanny lock with switchable use status according to claim 2, characterized in that The axis of the first flat bead hole (11) and the axis of the second flat bead hole (12) intersect on the rotation center line of the outer locking liner (3).

4. The nanny lock with switchable use status according to claim 3, characterized in that The α is 30±5.

5. The nanny lock with switchable use status according to any one of claims 1 to 4, characterized in that The nanny lock also includes a secondary key (73). When the nanny key (72) is inserted, the lower end of the first flat bead (52) or the lower end of the second flat bead (54) extends into the conversion hole (60), so that the conversion ring (6) cannot rotate together with the outer lock core (3); the secondary key (73) can be rotated to unlock the lock when the lock core is in a non-nanny opening state or in a nanny opening state.

6. The nanny lock with switchable use status according to any one of claims 1 to 4, characterized in that The lock housing (1) and the inner lock core (4) are also matched with each other through a plurality of groups of marble assemblies (5) distributed along the key insertion direction; the marble assemblies (5) arranged between the lock housing (1) and the inner lock core (4) are distributed in the same manner as the marble assemblies (5) arranged between the lock housing (1) and the outer lock core (3) along the key insertion direction.

7. The nanny lock with switchable use status according to claim 6, characterized in that The lock housing (1) is also provided with the conversion ring (6) mounted on the inner lock core (4), and the lock housing (1) is provided with an inner lock core hole (14) for accommodating the inner lock core (4), and the inner wall of the inner lock core hole (14) is also concavely formed with a conversion groove (10) for accommodating the conversion ring (6).

8. The nanny lock with switchable use status according to claim 5, characterized in that The lock housing (1) and the inner lock core (4) are also matched with each other through a plurality of groups of marble assemblies (5) distributed along the key insertion direction; the marble assemblies (5) arranged between the lock housing (1) and the inner lock core (4) are distributed in the same manner as the marble assemblies (5) arranged between the lock housing (1) and the outer lock core (3) along the key insertion direction.

9. The nanny lock with switchable use status according to claim 8, characterized in that The lock housing (1) is also provided with the conversion ring (6) mounted on the inner lock core (4), and the lock housing (1) is provided with an inner lock core hole (14) for accommodating the inner lock core (4), and the inner wall of the inner lock core hole (14) is also concavely formed with a conversion groove (10) for accommodating the conversion ring (6).

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