A child safety magnetic lock that is invisible

Abstract

The utility model belongs to the technical field of safety lock, specifically relates to an invisible children safety magnetic lock, including lock body subassembly and the lock catch of lock slot, lock body subassembly includes the shell, the lock core and the magnetic transmission mechanism of drive lock core that set up movably in the shell, the lock core is equipped with the lock bolt that coordinates with the lock slot, the magnetic transmission mechanism includes the first magnetic piece that sets up on the lock core and the second magnetic piece that coordinates with it magnetic suction, lock body subassembly still includes with the shell detachable fixed base, fixed base is equipped with the guide structure of sliding cooperation and is used for realizing the limiting mechanism of shell and fixed base positioning on the shell, and the guide structure includes the guide groove that sets up in the fixed base, the guide strip that sets up on the shell and adapts to its and realizes the limiting mechanism of positioning. This magnetic lock has the advantages of toolless quick maintenance, furniture surface zero damage, low installation error rate, significantly improves product maintainability and user experience.

Description

Technical Field

[0001] This utility model belongs to the field of safety lock technology, and in particular relates to an invisible child safety magnetic lock. Background Technology

[0002] Invisible child safety magnetic locks are locks used to protect children and prevent them from opening cabinets, drawers, and other furniture at will. They mostly utilize the principle of attraction and repulsion of permanent strong magnets to achieve locking and unlocking functions. They generally consist of a lock body assembly, a latch, and a magnetic key. The lock body assembly and latch are respectively installed on the drawer or cabinet door and the corresponding tabletop or cabinet body. The magnet in the lock body assembly works with the external magnetic key to drive the bolt, thus achieving the locking and unlocking operation.

[0003] Invisible child safety magnetic locks are relatively easy to install, with two common methods: one is using strong 3M adhesive, and the other is drilling holes for screw installation. However, when the lock body components malfunction and need to be replaced, the adhesive method leaves residue that is difficult to remove, affecting the reliability of reinstallation. The screw method, on the other hand, requires re-drilling for positioning during replacement, which can easily damage furniture surfaces. Furthermore, neither of these methods allows for quick disassembly and assembly of the lock body components, causing inconvenience for users during maintenance.

[0004] Therefore, there is an urgent need for an improved structure that enables quick assembly and disassembly of lock body components without damaging the mounting surface, in order to improve the maintainability and ease of use of the product. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing an invisible child safety magnetic lock.

[0006] The objective of this utility model can be achieved through the following technical solution: An invisible child safety magnetic lock, comprising a lock body assembly and a latch with a lock groove, wherein the lock body assembly comprises a housing, a lock cylinder movably disposed within the housing, and a magnetic transmission mechanism for driving the lock cylinder, wherein the lock cylinder is provided with a latch that can lock into the lock groove, and the magnetic transmission mechanism comprises a first magnetic element disposed on the lock cylinder and a second magnetic element that magnetically attracts the first magnetic element, wherein the lock body assembly further comprises a fixed base detachably connected to the housing, wherein the fixed base and the housing are provided with a slidingly engaged guide structure and a limiting mechanism for positioning the housing and the fixed base, and the guide structure comprises a guide groove disposed on the fixed base and a guide strip disposed on the housing and adapted to the guide groove.

[0007] Preferably, the limiting mechanism includes a concave-convex fitting structure disposed on the contact surface between the guide groove and the guide strip, the concave-convex fitting structure including a plurality of protrusions spaced apart along the sliding direction of the guide groove and the guide strip.

[0008] Preferably, the end of the guide bar is provided with an abutting part that can abut against the upper surface of the guide groove.

[0009] Preferably, the housing has an installation port for inserting the lock cylinder, the lock cylinder is rotatably installed in the housing via a rotating shaft, and a cover plate is detachably connected to the installation port.

[0010] Preferably, the housing has a strip-shaped limiting hole along the rotation direction of the lock cylinder, the lock cylinder has a paddle that slides through the strip-shaped limiting hole, the housing or cover plate has a hook, and the lock cylinder has a locking head that can engage with the hook.

[0011] Preferably, both the cover plate and the fixing base have magnetic through holes that mate with the first magnetic component.

[0012] Preferably, both the fixing base and the inner surface of the buckle are provided with adhesive pads for bonding, and both the fixing base and the buckle are provided with fixing holes.

[0013] Preferably, the invisible child safety magnetic lock also includes a key assembly, which includes a housing and a third magnetic element for magnetically engaging with the first magnetic element. The housing has a mounting cavity for embedding the third magnetic element, and a cover for opening and closing the mounting cavity is detachably connected to the housing.

[0014] Preferably, the key assembly also includes a matching magnetic pendant, which includes a hanging plate with an iron sheet mounted on it and an adhesive piece for bonding at the bottom of the hanging plate.

[0015] Preferably, the invisible child safety magnetic lock also includes an auxiliary positioning frame. The top and side of the auxiliary positioning frame are respectively provided with a first positioning groove and a second positioning groove that are adapted to the outer contour of the buckle and the fixing base. The first positioning groove is provided with a positioning post, and the buckle is provided with a positioning hole adapted to the positioning post for insertion.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. Through the sliding fit of the guide groove and guide strip, and the concave-convex limiting mechanism design, the lock body assembly can be quickly installed or disassembled without tools. The fixed base serves as a permanent installation carrier, avoiding damage to the furniture surface caused by repeated pasting or drilling, completely solving the problems of traditional adhesive residue or screw hole damage, and significantly improving the maintainability of the product and the reliability of furniture protection;

[0018] 2. The mounting base and the inner side of the latch integrate high-strength adhesive pads and screw fixing holes, supporting both "adhesive-free and traceless adhesion" and "screw reinforcement" installation modes. Users can flexibly choose the installation method according to the furniture material or long-term use needs, ensuring both the convenience of initial installation and the possibility of subsequent reinforcement, adapting to complex scenario requirements;

[0019] 3. The matching auxiliary positioning frame adapts to the contours of the first positioning groove and the latch, and the second positioning groove and the fixed base. Combined with the plug-in design of the positioning post and the positioning hole, it achieves millimeter-level precise alignment between the lock body and the latch, greatly reducing installation errors and improving user experience. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the lock body assembly and the auxiliary positioning frame.

[0021] Figure 2 This is a schematic diagram showing the breakdown of the lock body assembly structure.

[0022] Figure 3 Diagrams showing the front and back structures of the key assembly.

[0023] Figure 4 This is a schematic diagram showing the breakdown of the key component structure.

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the lock body assembly.

[0025] Figure 6 This is a schematic diagram of the installation structure of the auxiliary positioning frame, the locking buckle, and the fixed base.

[0026] Figure 7 This is a schematic diagram showing the disassembly of the auxiliary positioning frame, locking mechanism, and fixed base structure.

[0027] Figure 8 This is a schematic diagram of the installation structure where the shell and the fixed base are fitted together.

[0028] In the diagram, 1. Lock body assembly; 11. Shell; 111. Guide bar; 112. Abutment part; 113. Strip-shaped limiting hole; 12. Lock cylinder; 121. Lock tongue; 122. Rotating shaft; 123. Paddle; 124. Lock head; 13. First magnetic component; 14. Second magnetic component; 15. Fixing base; 151. Guide groove; 152. Protrusion; 153. Magnetic through hole; 16. Cover plate; 161. Hook; 2. Locking buckle; 21. Lock groove; 22. Fixing hole; 23. Positioning hole; 3. Adhesive piece; 4. Key assembly; 41. Shell; 411. Mounting cavity; 42. Third magnetic component; 43. Shell cover; 44. Magnetic hanging component; 441. Hanging plate; 442. Iron sheet; 5. Auxiliary positioning frame; 51. First positioning groove; 52. Second positioning groove; 53. Positioning post. Detailed Implementation

[0029] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0030] like Figures 1-5 As shown, this embodiment discloses an invisible child safety magnetic lock, including a lock body assembly 1 and a latch 2 with a lock groove 21. The lock body assembly 1 includes a housing 11, a lock cylinder 12 movably disposed within the housing 11, and a magnetic transmission mechanism for driving the lock cylinder 12. The lock cylinder 12 is provided with a latch 121 that can lock into the lock groove 21. The magnetic transmission mechanism includes a first magnetic element 13 disposed on the lock cylinder 12 and a second magnetic element 14 that magnetically attracts the first magnetic element 13. The lock body assembly 1 also includes a fixed base 15 detachably connected to the housing 11. The fixed base 15 and the housing 11 are provided with a sliding guide structure and a limiting mechanism for positioning the housing 11 and the fixed base 15. The guide structure includes a guide groove 151 disposed on the fixed base 15 and a guide strip 111 disposed on the housing 11 and adapted to the guide groove 151.

[0031] The working principle of this child safety magnetic lock in practical applications:

[0032] In the locked state, such as Figure 5 As shown in (a), the second magnetic component 14 magnetically attracts the first magnetic component 13, driving the lock cylinder 12 so that the lock tongue 121 engages with the lock groove 21 of the lock latch 2 to lock the lock body assembly 1 and the lock latch 2. The magnetic transmission mechanism is in a static magnetic balance state.

[0033] Unlocking operations, such as Figure 5 As shown in (b), when the magnetic key is placed close to the designated position of the housing 11, the first magnetic component 13 is attracted to drive the lock cylinder 12 to move, thereby releasing the locking state of the bolt 121 and the lock groove 21.

[0034] Quick disassembly and assembly, such as Figure 8 As shown, the precise alignment of the housing 11 and the fixed base 15 is achieved by the guide bar 111 being inserted into the guide groove 151 and sliding. The limiting mechanism ensures the stability of the housing 11 and the fixed base 15 after assembly. During disassembly and assembly, it is only necessary to release the limiting mechanism and slide the housing 11 out of the guide groove 151 on the fixed base 15.

[0035] The sliding housing 11 allows for quick assembly and disassembly through the cooperation of the guide structure and the limiting mechanism, improving maintenance convenience. The fixed base 15 serves as a permanent mounting carrier, eliminating the need for repeated gluing or drilling after initial installation, thus preventing residue buildup or damage to the furniture surface from repeated drilling. The cooperation between the guide groove 151 and the guide strip 111 ensures precise alignment between the housing 11 and the fixed base 15, while the limiting mechanism provides double anti-disengagement protection, enhancing the long-term stability of the lock assembly 1.

[0036] In this embodiment, as Figure 2 , Figure 8 As shown, the limiting mechanism includes a concave-convex fitting structure disposed on the contact surface of the guide groove 151 and the guide bar 111. The concave-convex fitting structure includes a plurality of protrusions 152 spaced apart along the sliding direction of the guide groove 151 and the guide bar 111.

[0037] During installation, align the guide strip 111 of the housing 11 with the guide groove 151 of the fixed base 15, and apply a pushing force to make the guide strip 111 slide into the guide groove 151. During the sliding process, the protrusions 152 deform due to compression, and precise positioning is achieved through the engagement between the protrusions 152. During disassembly, the user pulls the housing 11 in the opposite direction with a little force, and the protrusions 152 disengage from the engagement state due to the external force and slide out of the guide groove 151 along the sliding direction. The engagement and disengagement are achieved by utilizing the elastic deformation of the protrusions 152 themselves. The user can judge the sliding state through tactile or auditory feedback, making the operation simple and the installation convenient.

[0038] Furthermore, the end of the guide bar 111 is provided with an abutment portion 112 that can abut against the upper surface of the guide groove 151.

[0039] The contact between the abutting part 112 and the upper end face of the guide groove 151 forms a rigid barrier, which forcibly limits the maximum sliding stroke of the housing 11 and eliminates the installation deviation caused by excessive force applied by the user.

[0040] like Figure 2 , Figure 5 As shown, in this embodiment, the housing 11 has an installation port for inserting the lock cylinder 12. The lock cylinder 12 is rotatably installed in the housing 11 via a rotating shaft 122. A cover plate 16 is detachably connected to the installation port.

[0041] The detachable design of the cover plate 16 allows for quick access to and installation of the lock cylinder 12 within the housing 11 without disassembling the entire lock body assembly 1. The lock cylinder 12 can be maintained independently by opening and closing the cover plate 16. When the lock cylinder 12 rotates around the pivot 122, the bolt 121 swings synchronously with it, making it more suitable for confined spaces compared to a linear sliding structure.

[0042] like Figure 5As shown in (a), in this embodiment, the first magnetic element 13 is attracted by the second magnetic element 14, which drives the lock cylinder 12 to rotate around the rotating shaft 122 to a preset angle, so that the lock tongue 121 is engaged in the lock groove 21 and remains locked.

[0043] like Figure 5 As shown in (b), in this embodiment, by bringing the key assembly close to a designated position on the housing 11 and magnetically attracting the first magnetic element 13, the lock cylinder 12 is driven to rotate around the pivot 122 to a preset angle, so that the lock tongue 121 disengages from the lock groove 21 and remains in the unlocked state.

[0044] The housing 11 has a strip-shaped limiting hole 113 along the rotation direction of the lock cylinder 12. The lock cylinder 12 has a paddle 123 that slides through the strip-shaped limiting hole 113. The housing 11 or the cover plate 16 has a hook 161. The lock cylinder 12 has a locking head 124 that can engage with the hook 161.

[0045] like Figure 5 As shown in (c), in this embodiment, by sliding the paddle 123 along the strip-shaped limiting hole 113, the lock cylinder 12 is driven to rotate around the rotating shaft 122 to a preset angle, so that the locking head 124 is locked and fixed with the locking hook 161, and the locking tongue 121 is completely disengaged from the locking groove 21 and remains in the normally open state.

[0046] Furthermore, both the cover plate 16 and the fixed base 15 are provided with magnetic suction through holes 153 that mate with the first magnetic component 13.

[0047] The magnetic through-hole 153 is used to ensure the magnetic penetration of the first magnetic element 13 and reduce material costs.

[0048] Both the fixing base 15 and the latch 2 have adhesive pieces 3 for bonding on their inner sides, and both the fixing base 15 and the latch 2 have fixing holes 22.

[0049] In this embodiment, a dual-mode installation system is added to the inner contact surfaces (i.e., the surfaces that adhere to the furniture surface) of both the fixing base 15 and the latch 2. The adhesive patch 3, made of high-strength double-sided adhesive such as 3M VHB, is pre-attached to the inner surfaces of the fixing base 15 and the latch 2, and the adhesive surface is covered with a peelable protective film. Through-hole fixing holes 22 for screw drilling are provided on the fixing base 15 and the latch 2.

[0050] like Figure 3 , Figure 4As shown, in this embodiment, the invisible child safety magnetic lock also includes a key assembly 4 that is matched with the lock body assembly 1. The key assembly 4 includes a housing 41 and a third magnetic element 42 for magnetically engaging with the first magnetic element 13. The housing 41 is provided with a mounting cavity 411 for embedding the third magnetic element 42. A cover 43 for opening and closing the mounting cavity 411 is detachably connected to the housing 41.

[0051] The third magnetic component 42 in the key assembly 4 magnetically engages with the first magnetic component 13 to drive the lock cylinder 12 to unlock the bolt 121. The third magnetic component 42 is embedded in the outer shell 41, which not only makes it convenient for users to take and operate, but also makes it waterproof, dustproof and not easy to lose.

[0052] Furthermore, the key assembly 4 also includes a matching magnetic pendant 44, which includes a hanging plate 441, an iron sheet 442 mounted on the hanging plate 441, and an adhesive piece 3 for bonding at the bottom of the hanging plate 441.

[0053] The mounting plate 431 is attached to the location where the key assembly 4 needs to be stored using the adhesive piece 3. The third magnetic component 42 is magnetically attracted by the iron piece 432 to store the key assembly 4 after it is used to prevent it from being lost.

[0054] like Figure 6 , Figure 7 As shown, in this embodiment, the invisible child safety magnetic lock also includes an auxiliary positioning frame 5. The top and side of the auxiliary positioning frame 5 are respectively provided with a first positioning groove 51 and a second positioning groove 52 that are adapted to the outer contour of the buckle 2 and the fixed base 15. The first positioning groove 51 is provided with a positioning post 53, and the buckle 2 is provided with a positioning hole 23 adapted to the positioning post 53 for insertion.

[0055] During installation, first, the latch 2 and the fixing base 15 are respectively embedded in the first positioning groove 51 and the second positioning groove 52. Then, the latch 2 is glued to the tabletop using the adhesive piece 3, with the back of the fixing base 15 facing outwards. Next, the drawer is closed, allowing the adhesive piece 3 on the back of the fixing base 15 to adhere to the corresponding position on the drawer. After opening the drawer, the positioning pin 53 disengages from the positioning hole 23 due to the loss of support from the fixing base 15, and the auxiliary positioning frame 5 falls off naturally. Then, the housing 11 with the lock cylinder 12 is slidably installed on the fixing base 15, completing the installation. The auxiliary positioning frame 5 enables precise alignment between the latch 121 and the lock groove 21, enhancing the ease of installation for users.

[0056] For enhanced fixation, screws can be driven into the fixing holes 22 to further secure the latch 2 and the fixing base 15 to the tabletop and drawer.

[0057] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An invisible child safety magnetic lock, comprising a lock body assembly (1) and a latch (2) having a lock groove (21), wherein the lock body assembly (1) includes a housing (11), a lock cylinder (12) movably disposed within the housing (11), and a magnetic transmission mechanism for driving the lock cylinder (12), wherein the lock cylinder (12) is provided with a latch (121) capable of locking into the lock groove (21), and the magnetic transmission mechanism includes a first magnetic element (13) disposed on the lock cylinder (12) and a second magnetic element (14) magnetically attracted to the first magnetic element (13), characterized in that, The lock body assembly (1) further includes a fixed base (15) detachably connected to the housing (11). The fixed base (15) and the housing (11) are provided with a sliding fit guide structure and a limiting mechanism for positioning the housing (11) and the fixed base (15). The guide structure includes a guide groove (151) provided on the fixed base (15) and a guide strip (111) provided on the housing (11) and adapted to the guide groove (151).

2. The invisible child safety magnetic lock according to claim 1, characterized in that, The limiting mechanism includes a concave-convex fitting structure disposed on the contact surface of the guide groove (151) and the guide bar (111), the concave-convex fitting structure including a plurality of protrusions (152) spaced apart along the sliding direction of the guide groove (151) and the guide bar (111).

3. The invisible child safety magnetic lock according to claim 2, characterized in that, The end of the guide bar (111) is provided with an abutment part (112) that can abut against the upper surface of the guide groove (151).

4. The invisible child safety magnetic lock according to claim 3, characterized in that, The housing (11) has an installation port for inserting the lock cylinder (12). The lock cylinder (12) is rotatably installed in the housing (11) via a rotating shaft (122). A cover plate (16) is detachably connected to the installation port.

5. The invisible child safety magnetic lock according to claim 4, characterized in that, The housing (11) has a strip-shaped limiting hole (113) along the rotation direction of the lock cylinder (12). The lock cylinder (12) has a paddle (123) that slides through the strip-shaped limiting hole (113). The housing (11) or the cover plate (16) has a hook (161). The lock cylinder (12) has a locking head (124) that can engage with the hook (161).

6. The invisible child safety magnetic lock according to claim 5, characterized in that, Both the cover plate (16) and the fixed base (15) have magnetic suction holes (153) that connect with the first magnetic component (13).

7. A concealed child safety magnetic lock according to any one of claims 1-5, characterized in that, The inner sides of the fixing base (15) and the buckle (2) are provided with adhesive pieces (3) for bonding, and the fixing base (15) and the buckle (2) are provided with fixing holes (22).

8. A concealed child safety magnetic lock according to any one of claims 1-5, characterized in that, This invisible child safety magnetic lock also includes a key assembly (4), which includes a housing (41) and a third magnetic element (42) for magnetically engaging with the first magnetic element (13). The housing (41) has a mounting cavity (411) for embedding the third magnetic element (42), and a cover (43) for opening and closing the mounting cavity (411) is detachably connected to the housing (41).

9. A concealed child safety magnetic lock according to claim 8, characterized in that, The key assembly (4) also includes a matching magnetic pendant (44), which includes a hanging plate (441), on which an iron sheet (442) is installed, and at the bottom of the hanging plate (441) is an adhesive piece (3) for bonding.

10. A concealed child safety magnetic lock according to any one of claims 1-5, characterized in that, This invisible child safety magnetic lock also includes an auxiliary positioning frame (5). The top and side of the auxiliary positioning frame (5) are respectively provided with a first positioning groove (51) and a second positioning groove (52) that are adapted to the outer contour of the buckle (2) and the fixed base (15). The first positioning groove (51) is provided with a positioning post (53), and the buckle (2) is provided with a positioning hole (23) adapted to the positioning post (53) for insertion.

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