A child safety lock

Abstract

The utility model discloses a child safety lock, including the lock band and two lock catch assemblies connected by it, wherein at least one lock catch assembly includes first lock seat, second lock seat and base, first lock seat is linear reciprocating activity arrangement along the first direction to switch between the locking state and the unlocking state, when first lock seat is in the locking state, and the first limiting portion of first lock seat is engaged with the second limiting portion of base, when first lock seat is in the unlocking state, and the first limiting portion is separated with the second limiting portion to allow the lock post spare to get out of the lock hole, make first lock seat relative to base along the second direction and separate, thereby unlocking the child safety lock.

Description

Technical Field

[0001] This utility model relates to the field of lock device technology, and more specifically to a child safety lock. Background Technology

[0002] In modern family life, child safety has become a core concern for parents. With the widespread use of various furniture and appliances in the home, the risk of children exploring dangerous areas out of curiosity has significantly increased. For example, accidental opening of cabinet doors, drawers, refrigerator doors, windows, etc., could lead to children pinching their fingers, coming into contact with sharp objects, medicines, cleaning agents, or even falls. To effectively mitigate these risks, child safety locks have emerged as a protective device specifically designed to prevent children from easily opening certain parts. Their main function is to connect two parts (such as cabinet door and cabinet body, drawer and cabinet body), preventing children from easily opening them under normal use, while allowing adults to easily unlock them as needed. This ensures children's safety without affecting adults' normal use of the parts. Currently, there are many types of child safety locks on the market, with belt-type child safety locks being the most widely used. These locks typically include a locking belt and two locking components connected by the belt. The locking and unlocking of these components controls the relative movement between the two connected parts. However, existing child safety locks still have room for improvement in terms of structural design and performance, and cannot fully meet users' comprehensive needs for safety, convenience and adaptability.

[0003] Many existing child safety locks employ complex locking structures to achieve their locking function. Due to this complexity, numerous components are involved, requiring high precision in their fit. Over long-term use, wear, deformation, or loosening of any single component can affect the normal operation of the entire locking structure, leading to unreliable locking. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a child safety lock.

[0005] This utility model provides a child safety lock suitable for connecting two components to be connected. The child safety lock includes a locking strap and two locking assemblies connected by the locking strap. At least one of the locking assemblies includes a first locking seat, a second locking seat, and a base. The first locking seat is configured to be operably disposed relative to the second locking seat or the base so that the first locking seat is linearly reciprocating along a first direction, thereby switching the first locking seat between a locked state and an unlocked state.

[0006] The base has a protruding locking pin, and the side wall of the locking pin has a second limiting part. The first lock seat has a lock hole and a first limiting part. The locking pin passes through the lock hole so that the first limiting part and the second limiting part engage to limit the first lock seat and the base in a second direction.

[0007] When the first lock seat is in the locked state, the first limiting part engages with the second limiting part to lock the child safety lock; when the first lock seat is in the unlocked state, the first limiting part and the second limiting part separate / misalign, allowing the lock pin to disengage from the keyhole so that the first lock seat disengages from the base in a second direction perpendicular to the first direction to unlock the child safety lock.

[0008] After adopting the proposed technical solution, the lock can be released by displacement of the first lock seat along a first direction, and the unlocking operation at that end can be completed by displacement along a second direction. Because the locking assembly can be located at one end of the lock strap or simultaneously at both ends, the child safety lock can perform the aforementioned unlocking / locking operations at one or both ends.

[0009] According to the child safety lock described above, the second lock seat is connected to the first lock seat via a detachable coupling structure, and the second lock seat is coupled or decoupled relative to the first lock seat in a second direction to form a locked state or an unlocked state.

[0010] According to the above-mentioned child safety lock, a first positioning mechanism is provided between the second lock seat and the base. The first positioning mechanism includes a positioning protrusion and a positioning recess respectively disposed on the lock pin and the second lock seat, for positioning the second lock seat and the base in the locked state.

[0011] According to the above-mentioned child safety lock, the first limiting part is provided around the lock hole, and the lower surface of the second limiting part is provided with a first limiting plane. In the locked state, the first limiting plane abuts against the first limiting part to lock the second lock seat in the second direction; the coupling structure is a snap-fit ​​structure for engaging with the first lock seat; the positioning protrusion and the positioning recess are respectively provided on the lock post and the second lock seat.

[0012] According to the above-mentioned child safety lock, the base includes a base body and a locking pin protruding therefrom, the second limiting part protrudes from the side wall of the locking pin and is spaced apart from the base body, a groove is provided between the second limiting part and the base body, and the first limiting plane is provided on the bottom surface of the second limiting part.

[0013] According to the above-mentioned child safety lock, the positioning protrusion is provided at the top of the lock pin, and the positioning recess is formed by a positioning member provided on the second lock seat.

[0014] According to the aforementioned child safety lock, the first lock base includes a base and a recess provided on the base, and the lock hole is provided on the base.

[0015] According to the aforementioned child safety lock, a groove is formed extending upward from the base.

[0016] According to the above-mentioned child safety lock, an operating part is formed by extending outward from the base in a circumferential direction. The operating part is provided with a side arm that is spaced apart from the sliding groove and extends downward. The gap between the sliding groove and the side arm forms a locking hole.

[0017] According to the aforementioned child safety lock, the first lock seat is sandwiched between the second lock seat and the base.

[0018] According to the aforementioned child safety lock, the second lock seat includes a latch body and a snap-fit ​​component. The snap-fit ​​structure is disposed on the snap-fit ​​component, which is composed of a spring piece, and snaps into the side arm component to clamp the lock strap between the base and the second lock seat.

[0019] According to the aforementioned child safety lock, a sliding limiting mechanism for damping or limiting is also provided between the second lock seat and the base.

[0020] According to the above-mentioned child safety lock, a second positioning mechanism is provided between the lock strap and the second lock seat, including a protruding post and a groove that fit together.

[0021] According to the aforementioned child safety lock, the third limiting plane of the side arm member abuts against the second limiting plane of the buckle structure to form a snap-fit ​​connection.

[0022] According to the above-mentioned child safety lock, the lock hole is a circular hole, the second limiting part is an annular protrusion, and the inner diameter of the circular hole is greater than or equal to the outer diameter of the annular protrusion;

[0023] According to the aforementioned child safety lock, the second lock seat is further provided with a pressing member for pressing against the lock strap, and the operating part is provided with a gripping surface.

[0024] According to the aforementioned child safety lock, the sliding limiting mechanism includes a first limiting member disposed on the snap-fit ​​member of the second lock seat and a second limiting member disposed on the first lock seat.

[0025] According to the above-mentioned child safety lock, the lock strap end is provided with a hole, and in the locked state, the lock pin passes through the lock hole and the hole, and the base has a fixing surface for connecting the component to be connected.

[0026] According to the aforementioned child safety lock, each of the two locking assemblies located at both ends of the lock strap includes a first lock seat, a second lock seat, and a base.

[0027] The beneficial effects of this utility model are:

[0028] This child safety lock features a layered structure and a detachable coupling design, offering advantages such as easy installation and disassembly, and simple locking and unlocking operations. Users can easily install the child safety lock onto the parts that need to be locked and quickly unlock it when needed, without the need for complicated tools or cumbersome operations. Furthermore, by incorporating limit and positioning mechanisms, the stability and reliability of the child safety lock in the locked state are ensured, effectively preventing children from accidentally opening it and providing reliable safety protection for children. Attached Figure Description

[0029] Figure 1 This is a structural schematic diagram of the child safety lock of this utility model, in which both locking components are in the locked state;

[0030] Figure 2 yes Figure 1 A schematic diagram of the locking assembly at one end of the embodiment being switched to the unlocked state;

[0031] Figure 3 yes Figure 1 A cross-sectional view and a partial enlarged view of the embodiment in the locked state along the first direction;

[0032] Figure 4 yes Figure 1 A cross-sectional view and a partial enlarged view of the embodiment in the unlocked state along the first direction;

[0033] Figure 5 yes Figure 1 The structure of the locking assembly at one end of the embodiment exploded. Figure 1 ;

[0034] Figure 6 yes Figure 1 The structure of the locking assembly at one end of the embodiment exploded. Figure 2 ;

[0035] Figure 7 yes Figure 1 A schematic diagram of the structure of the first lock seat in the embodiment;

[0036] Figure 8 yes Figure 1 A schematic diagram of the structure of the second lock seat in the embodiment;

[0037] Figure 9 yes Figure 1 A cross-sectional view of the locking assembly and locking strap in the second direction of the embodiment.

[0038] Explanation of the reference numerals in the figure:

[0039] Locking band 100, hole 110, latch assembly 200, first lock seat 210, second lock seat 220, base 230, first direction S1, second direction S2.

[0040] The base body 231, locking pin 232, second limiting part 233, fixing surface 234, groove part 235, first limiting plane 236, first guide surface 237, positioning protrusion 238, and first positioning mechanism 300 are included.

[0041] Cavity 201, cavity opening 202, first limiting part 211, base 212, operating part 213, locking hole 214, sliding groove part 215, locking hole 216, third limiting plane 217, clamping surface 218, side arm 219.

[0042] Lock body 221, latching component 222, positioning component 223, positioning recess 224, pressing component 225.

[0043] Sliding limiting mechanism 240, first limiting member 241, second limiting member 242.

[0044] The fastening structure is 400, the second limiting plane is 401, the second guide surface is 402, the protruding post is 510, and the post groove is 520. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0046] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, features in the following embodiments can be combined with each other.

[0047] Please see Figures 1 to 9 This utility model discloses a child safety lock, suitable for connecting two components to be connected, such as a cabinet door and cabinet body, a drawer and cabinet body, a window sash and window frame, etc., which need to be prevented from being opened by children at will. The child safety lock includes a locking strap 100 and two locking assemblies 200 connected by the locking strap 100, thereby locking the cabinet door by fixing the two locking assemblies 200 to the cabinet door and cabinet body, respectively.

[0048] The locking strap 100 can be made of flexible materials, such as nylon or polyester, possessing a certain degree of toughness and strength to adapt to connection requirements in different scenarios. Two locking assemblies 200 are respectively installed on the two components to be connected, achieving relative fixation of the two components through the connection of the locking strap 100.

[0049] In this embodiment, both locking assemblies 200 are arranged from top to bottom as a second locking seat 220, a first locking seat 210, and a base 230, with the first locking seat 210 sandwiched between the second locking seat 220 and the base 230. This allows the corresponding end of the locking strap 100 to be locked on the first locking seat 210, forming a locked state at that end. This structural design ensures that the end of the locking strap 100 is securely mounted on the locking assembly 200, preventing loosening or detachment during use. In other embodiments, one locking assembly 200 can be configured with the above structure, while the other locking assembly 200 can be configured with a conventional structure. This changes the child safety lock from being unlockable / lockable at both ends as described in the above embodiment to being unlockable / lockable only at one end.

[0050] Please see Figure 5 The first lock seat 210 is provided with a cavity 201 for inserting one end of the lock strap 100 into it. The first lock seat 210 is provided with an opening 202 through which the lock strap 100 can pass to enter the cavity 201. The opening 202 penetrates the side wall of the first lock seat 210 so that the cavity 201 communicates with the outside, so that the lock strap 100 is configured to be inserted and assembled into the first lock seat 210.

[0051] Please see Figure 7 The first lock seat 210 includes a base 212, a sliding groove 215, and an operating part 213. The base 212 is the basic part of the first lock seat 210 and can be formed by the bottom wall of the first lock seat 210. A lock hole 214 is provided on the base 212, which can cooperate with the lock pin 232 on the base 230 to realize the locking of the first lock seat 210 and the base 230. The sliding groove 215 extends upward from the base 212 and is provided on both sides of the cavity 201, and is suitable for positioning the second lock seat 220. The sliding groove 215 can ensure the accurate installation position of the second lock seat 220 on the first lock seat 210, and also provides guidance for the relative movement between the second lock seat 220 and the first lock seat 210. The operating part 213 is formed by the side wall or top wall of the first lock seat 210, and the operating part 213 is provided with a grip surface 2131 for easy operation by the user. The grip surface 2131 can be designed as a curved surface suitable for gripping, which can increase the user's operating comfort and facilitate the user's operation of the first lock seat 210. A first limiting portion 211 is disposed around the lock hole 214, and the first limiting portion 211 is formed by a portion of the base 212 around the lock hole 214 (e.g., Figure 7(As shown), to cooperate with the second limiting part 233 on the locking pin 232, for locking or unlocking between the first lock seat 210 and the base 230.

[0052] The second lock seat 220 is connected to the first lock seat 210 via a detachable coupling structure. In this embodiment, the detachable coupling structure is a snap-fit ​​structure 400, which includes a hook on the second lock seat 220 and a slot on the first lock seat 210 or base 230, so that the second lock seat 220 is connected to the first lock seat 210 or base 230 through the cooperation of the hook and the slot.

[0053] Furthermore, a positioning engagement is formed between the second lock seat 220 and the base 230 to limit the displacement of the second lock seat 220 relative to the base 230 in the first direction S1 when in the locked state. Specifically, a limiting mechanism is provided between the second lock seat 220 and the base 230. The limiting mechanism includes a mutually adaptable positioning protrusion 238 and a positioning recess 224, which are respectively provided on the base 230 and the second lock seat 220.

[0054] In this embodiment, a positioning protrusion 238 is formed at the top of the locking post 232 of the base 230, and a positioning recess 224 is formed on the second lock seat 220 by the positioning member 223 protruding on the bottom surface of the second lock seat 220. The first positioning mechanism 300 is formed by the interlocking of the positioning protrusion 238 and the positioning recess 224, which can limit the displacement of the second lock seat 220 in the first direction S1 so that the second lock seat 220 is positioned relative to the base 230 in the locked state.

[0055] Furthermore, a second positioning mechanism is provided between the locking strap 100 and the second lock seat 220. The second positioning mechanism includes a protruding post 510 and a groove 520 that can be engaged with each other. In this embodiment, the protruding post 510 is disposed on the side of the second lock seat 220 facing the locking strap 100, and the groove 520 is disposed at a corresponding position on the locking strap 100. Through the engagement of the protruding post 510 and the groove 520, the accurate positioning of the locking strap 100 in the locking assembly 200 can be further ensured, preventing the locking strap 100 from shifting during use.

[0056] The base 230 serves as the mounting foundation for the locking assembly 200. The base 230 includes a base body 231 and a locking pin 232 protruding therefrom. The locking pin 232 is a columnar component. One end of the locking strap 100 has a hole 110. In the locked state, the locking pin 232 can pass through the lock hole 214 and the hole 110 to form a fit, allowing the locking pin 232 to directly connect to the locking strap 100 even in the locked state. Compared to other embodiments where the locking strap 100 is clamped between the first lock seat 210 and the second lock seat 220, and the first lock seat 210 is locked to the base 230 in an indirect connection manner, this direct connection structure improves the connection strength of the child safety lock in the locked state. In the unlocked state, the clamping method described above is sufficient to meet the requirements.

[0057] The locking pin 232 is provided with a second limiting part 233. In this embodiment, the second limiting part 233 is a protrusion on the side wall of the locking pin 232, which is adapted to fit with the first limiting part 211 on the edge of the lock hole 214. The base 230 is also provided with a fixing surface 234 for fixing it to the component to be connected. The fixing surface 234 is formed by the bottom surface of the base body 231, and is preferably fixed to the component to be connected by double-sided tape or 3M adhesive to ensure that it will not loosen during use.

[0058] Please see Figure 4 , Figure 5In this embodiment, the first lock seat 210 is configured to be operably movable relative to the second lock seat 220 or the base 230 in a horizontal reciprocating motion along a first direction S1, so as to switch between a locked state and an unlocked state. When the first lock seat 210 is in the locked state, the first limiting part 211 can engage with the second limiting part 233, that is, the first limiting part 211 located at the edge of the lock hole 214 abuts against the first limiting plane 236 provided on the bottom surface of the second limiting part 233, realizing a locking engagement in the second direction S2, so as to lock the first lock seat 210 and the base 230 together, so that the child safety lock is in the locked state and the two connected parts cannot be opened relative to each other. At the same time, the second lock seat 220 is coupled with the first lock seat 210 in the second direction S2, and the second limiting plane 401 of the snap-fit ​​structure 400 abuts against the third limiting plane 217 provided on the lower surface of the side arm 219, so that the second lock seat 220 cannot be disengaged in the second direction S2. It should be noted that in other embodiments, the second lock seat 220 can also be configured to couple with the base 230 along the second direction S2, with the first lock seat 210 sandwiched between them. The locking effect of the latch assembly 200 is further enhanced by the tight engagement of the hook and slot of the latch structure 400, while also allowing for easy decoupling during unlocking to separate the lock hole 214, the perforated section 110, and the lock pin 232. In this embodiment, the first direction S1 is generally the length direction of the lock band 100, and the second direction S2 is perpendicular to the bottom surface of the base 230.

[0059] When unlocking is required, the user pushes the first lock base 210 to slide along the first direction S1 via the operation unit 213, for example... Figure 2 The first lock seat 210 is displaced outward by a distance D along the first direction S1 to put it in the unlocked state. At this time, the first limiting part 211 and the second limiting part 233 are misaligned, that is, the first limiting part 211 and the second limiting part 233 at the edge of the lock hole 214 are separated, thereby allowing the first lock seat 210 to disengage from the base 230 along the second direction S2 perpendicular to the first direction S1, thus unlocking the child safety lock. During the unlocking process, the second lock seat 220 and the first lock seat 210 are decoupled from the base 230 along the second direction S2, so that the child safety lock is unlocked at one end.

[0060] In this embodiment, the end of the locking strap 100 is positioned between the base 212 and the second lock seat 220. Specifically, after the latch assembly 200 is assembled, the corresponding end of the locking strap 100 is clamped between the first lock seat 210 and the second lock seat 220, and then the convex and concave positioning cooperation of the protrusion 510 and the groove 520 of the first positioning mechanism ensures a firm connection between the locking strap 100 and the latch assembly 200.

[0061] In this embodiment, the locking strap 100 has a hole 110 at one end, so the length of the child safety lock is fixed. In other embodiments, multiple holes 110 can be provided at the end of the locking strap 100, so that the length of the locking strap 100 can be adjusted according to actual needs to accommodate the connection between two parts to be connected at different distances; wherein, the end length of the locking strap 100 can be cut as needed when adjusting the length.

[0062] Please see Figure 7-9 A locking hole 216 is provided on the outer side of the sliding groove portion 215 of the first lock seat 210, that is, a locking hole 216 is formed between the sliding groove portion 215 and the outer side wall of the first lock seat 210, for assembling the locking member 222 of the second lock seat 220 so that the second lock seat 220 can be locked with the first lock seat 210. A side arm member 219 is provided on the outer side wall of the first lock seat 210, the locking hole 216 is located between the sliding groove portion 215 and the side arm member 219, the locking member 222 extends towards both sides of the latch body 221 to form a spring-loaded component, and the latching structure 400 is provided at the lower end of the locking member 222 and located on the outer side of the locking member 222; a second limiting plane 401 is provided on the upper end surface of the latching structure 400, and a second guide surface 402 (preferably composed of an inclined surface or a curved surface) is provided at the lower end. A third limiting plane 217 is formed on the lower end face of the side arm 219. Therefore, when the second lock seat 220 is fastened to the first lock seat 210, the second guide surface 402 can play a guiding role. After installation, the second guide surface 402 abuts against the third limiting plane 217 to perform a locking action. Furthermore, the length of the locking hole 216 along the first direction S1 is greater than the length of the locking member 222. Therefore, the first lock seat 210 is configured to be able to reciprocately slide and lock onto the first lock seat 210 along the first direction S1.

[0063] A sliding limiting mechanism 240 is provided between the latching member 222 and the side arm 219 of the first lock seat 210 to limit the reciprocating sliding of the first lock seat 210 along the first direction S1. This provides damping during the sliding process of the first lock seat 210 or positions it in a locked or unlocked state, thereby improving the safety and user experience of the child safety lock. In this embodiment, the sliding limiting mechanism 240 includes a first limiting member 241 on the latching member 222 and a second limiting member 242 on the side arm 219. Preferably, the first limiting member 241 is a protrusion on the latching member 222, and the second limiting member 242 is a corresponding recess on the side arm 219. The recess has multiple recesses to position the second lock seat 220 in several positions, such as positions corresponding to the locked and unlocked states.

[0064] Preferably, the slide groove 215 is further provided with a clamping surface 218 to abut against the locking strap 100, so that the locking strap 100 is clamped between the clamping surface 218 and the base 212.

[0065] Preferably, a pressing member 225 for pressing against the lock strap 100 is also provided on the bottom surface of the lock body 221, so as to better clamp the lock strap 100 after the second lock seat 220 and the first lock seat 210 are engaged.

[0066] Please see Figure 5 , 9 The second limiting part 233 is composed of an annular protrusion protruding from the side wall of the locking pin 232 and surrounding the locking pin 232. The second limiting part 233 is a certain distance away from the base 212 to form a groove 235 between the second limiting part 233 and the base 212. The thickness of the groove 235 is greater than or equal to the thickness of the base 212, so that the first limiting plane 236 provided on the lower surface of the second limiting part 233 abuts against the first limiting part 211, thereby locking the first lock seat 210 onto the base 230 in the second direction S2. Preferably, a first guide surface 237 is provided on the upper surface of the second limiting part 233, preferably an inclined surface or a curved surface, so that when locking the child safety lock from the unlocked state to the locked state, the guiding effect between the first guide surface 237 and the base 212 can improve the convenience of locking operation. Preferably, the lock hole 214 is a circular hole, and the inner diameter of the circular hole is greater than or equal to the outer diameter of the annular protrusion that serves as the second limiting part 233. Of course, in other embodiments, it can also be other non-circular shapes, as long as it can satisfy the requirements of separation during unlocking and locking in the second direction during locking.

[0067] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A child safety lock adapted to connect two components to be connected, the child safety lock comprising a locking strap (100) and two latch assemblies (200) connected by the locking strap (100); characterized in that: At least one of the latching assemblies (200) includes a first lock seat (210), a second lock seat (220), and a base (230), wherein the first lock seat (210) is configured to be operably disposed relative to the second lock seat (220) or the base (230) such that the first lock seat (210) is linearly reciprocating along a first direction to switch the first lock seat (210) between a locked state and an unlocked state; The base (230) has a protruding locking post (232), and a second limiting part (233) is provided on the side wall of the locking post (232). The first lock seat (210) has a locking hole (214) and a first limiting part (211). The locking post (232) passes through the locking hole (214) so ​​that the first limiting part (211) engages with the second limiting part (233). When the first lock seat (210) is in the locked state, the... The first limiting part (211) engages with the second limiting part (233) to lock the child safety lock; when the first lock seat (210) is in the unlocked state, the first limiting part (211) separates from the second limiting part (233), allowing the lock pin (232) to disengage from the lock hole (214) so ​​that the first lock seat (210) disengages from the base (230) in a second direction perpendicular to the first direction, thereby unlocking the child safety lock.

2. The child safety lock according to claim 1, characterized in that, The second lock seat (220) is connected to the first lock seat (210) via a separable coupling structure, and the second lock seat (220) is coupled or decoupled relative to the first lock seat (210) in a second direction to form the locked state or the unlocked state; A first positioning mechanism (300) is provided between the second lock seat (220) and the base (230). The first positioning mechanism (300) includes a positioning protrusion (238) and a positioning recess (224) respectively disposed on the lock pin (232) and the second lock seat (220), for positioning the second lock seat (220) and the base (230) in the locked state.

3. The child safety lock according to claim 2, characterized in that, The first lock seat (210) is sandwiched between the second lock seat (220) and the base (230). The first limiting part (211) is disposed around the lock hole (214). The lower surface of the second limiting part (233) is provided with a first limiting plane (236). In the locked state, the first limiting plane (236) abuts against the first limiting part (211) to lock the second lock seat (220) in the second direction. The coupling structure is a snap-fit ​​structure (400) for engaging with the first lock seat (210). The positioning protrusion (238) and the positioning recess (224) are respectively disposed on the lock post (232) and the second lock seat (220).

4. The child safety lock according to claim 3, characterized in that, The base (230) includes a base body (231) and a locking post (232) protruding therefrom. The second limiting part (233) protrudes from the side wall of the locking post (232) and is spaced apart from the base body (231). A groove (235) is provided between the second limiting part (233) and the base body (231). The first limiting plane (236) is provided on the bottom surface of the second limiting part (233).

5. The child safety lock according to claim 4, characterized in that, The positioning protrusion (238) is provided at the top of the locking pin (232), and the positioning recess (224) is formed by the positioning member (223) provided on the second locking seat (220).

6. The child safety lock according to claim 3, characterized in that, The first lock seat (210) includes a base (212) and a cavity (201) provided on the base (212), and the lock hole (214) passes through the base (212); A groove (215) extends upward from the base (212). An operating part (213) is formed by extending outward from the base (212) in the circumferential direction. The operating part (213) is provided with a side arm (219) that is spaced apart from the sliding groove (215) and extends downward. The gap between the sliding groove (215) and the side arm (219) forms a locking hole (216). The second lock seat (220) includes a latch body (221) and a snap-fit ​​member (222). The snap-fit ​​structure (400) is provided on the snap-fit ​​member (222) which is made of a spring piece and snaps with the side arm member (219) to clamp the lock strap (100) between the base (212) and the second lock seat (220). A sliding limiting mechanism (240) for damping or limiting is also provided between the second locking seat (220) and the base (230).

7. The child safety lock according to claim 6, characterized in that, A second positioning mechanism is provided between the locking band (100) and the second locking seat (220), including a protruding post (510) and a post groove (520) that fit together. The third limiting plane (217) of the side arm (219) abuts against the second limiting plane (401) of the snap-fit ​​structure (400) to form a snap-fit ​​connection.

8. The child safety lock according to claim 6, characterized in that, The lock hole (214) is a circular hole, the second limiting part (233) is an annular protrusion, and the inner diameter of the circular hole is greater than or equal to the outer diameter of the annular protrusion; The second lock seat (220) is also provided with a pressing member (225) for pressing against the lock band (100), and the operating part (213) is provided with a gripping surface (2131).

9. The child safety lock according to claim 6, characterized in that, The sliding limiting mechanism (240) includes a first limiting member (241) disposed on the snap-fit ​​member (222) of the second lock seat (220) and a second limiting member (242) disposed on the first lock seat (210).

10. The child safety lock according to any one of claims 1-9, characterized in that, The locking band (100) has a hole (110) at its end. In the locked state, the locking pin (232) passes through the locking hole (214) and the hole (110). The base (230) has a fixing surface (234) for connecting the parts to be connected. The two locking assemblies (200) located at both ends of the locking strap (100) each include a first locking seat (210), a second locking seat (220), and a base (230).

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