Child safety door guardrail locking structure and child safety door guardrail applying same

Abstract

The utility model relates to a child safety door guardrail locking structure and a child safety door guardrail applying the same, which solve the problems of complex structure, unreliable locking and the like in the prior art, and adopt the technical scheme that a lock body is at least internally provided with a first spring bolt assembly, a lock seat is at least provided with a first lock cavity, and the upper wall of the first lock cavity is an inclined plane; the upper portion of the outer end of a first spring bolt on the first spring bolt assembly abuts against and is matched with the inclined face, when the lock body moves upwards under the action of external force, the first spring bolt is pressed by the inclined face, the first spring bolt retreats from the first lock cavity, unlocking is achieved, the lock body loses the external force, and the lock body descends under the action of gravity. And when the first lock tongue loses the pressing of the inclined surface, the first lock tongue is inserted into the first lock cavity to realize automatic locking. The device has the advantages that the whole structure is simple and reasonable, and production, machining, assembly and maintenance cost can be controlled easily; unlocking can be performed conveniently and quickly; therefore, the use reliability of the child safety door guardrail is ensured, and the safety of children is protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sofa especially to a child safety door guard rail locking structure and a child safety door guard rail applying the same. BACKGROUND

[0002] The child safety door guard rail is often used at the indoor door, stair door, kitchen door and the like, and is used for preventing children from entering the place where accidents are prone to occur.

[0003] The existing child safety door guard rail generally comprises two end columns, a safety door arranged between the two end columns, the safety door is made of a plurality of metal strips, plastic strips, wood strips, nets or cloth materials, one end of the safety door can be connected with the end column through a connecting piece, and the other end of the safety door is connected with the other end column through a lock, buckle or the like locking structure to form a buckling closing or unlocking opening.

[0004] The locking structure of the existing child safety door guard rail is often complex in structure, is complicated to unlock, is not reliable in locking, and is prone to false locking, when the child pushes or knocks the safety door guard rail, the safety door guard rail is easily pushed open, the safety door guard rail loses the significance of limiting the child's action area, and the child safety door guard rail has a safety hazard. SUMMARY

[0005] The utility model discloses a child safety door guard rail locking structure and a child safety door guard rail applying the same, and aims at solving the above problems in the prior art, and has the advantages that the overall structure is simple and reasonable, the production, assembly and maintenance costs are reduced, the first lock tongue assembly is matched with the inclined surface in the lock seat, the lock body (i.e. the handle of the child safety door guard rail) is lifted to conveniently and quickly unlock, the lock body is loosened, and under the action of the gravity of the safety door, the lock body and the lock seat are reliably locked, so that the use reliability of the child safety door guard rail is improved, and the child safety is protected.

[0006] The above technical purposes of the utility model are mainly solved through the following technical scheme:

[0007] The utility model relates to first technical subject's technical scheme of the practical new type: a child safety door guardrail locking structure, including the lock seat, with the lock body of lock or open lock cooperation of lock seat, its characterized in being equipped with at least first lock tongue subassembly in the lock body, at least be equipped with first lock cavity on the lock seat, the upper wall of first lock cavity is the inclined plane, the inclined plane makes first lock cavity show the shape of big mouth and small base, the upper portion of the outer end of first lock tongue on first lock tongue subassembly and the inclined plane resist touch cooperation, when the lock body is moved up under the action of external force, first lock tongue is pressed by the inclined plane, makes first lock tongue exit first lock cavity, realizes the open lock, the lock body loses external force and under the action of gravity, the lock body drops, first lock tongue loses the pressing of the inclined plane, first lock tongue inserts first lock cavity, realizes automatic locking.

[0008] In the technical scheme, the overall structure is simple, which is beneficial to reduce production and processing, assembly and maintenance costs; by cooperation of the first lock tongue subassembly and the inclined surface in the lock seat, the lock body (i.e. the handle of the child safety door guardrail) is lifted to realize convenient and fast unlocking, the lock body is released, and the lock body and the lock seat are reliably locked under the gravity of the safety door, thereby being beneficial to improve the use reliability of the child safety door guardrail and being beneficial to protect the safety of children.

[0009] As further improvement and supplement to the above technical scheme, the utility model adopts the following technical measures: the first lock tongue subassembly further includes a first spring, the outer end of the first spring is matched with the inner end of the first lock tongue, and the inner end of the first spring abuts against the lock body. In use, the lock body is lifted, the first lock tongue is pressed by the inclined surface in the lock seat and retracts into the lock body, the first spring is in a compressed state and has a restoring force (or elastic force), when the lock body is released, the first lock tongue gradually extends from the lock seat under the action of the restoring force (or elastic force) of the first spring until completely inserted into the first lock cavity, so as to realize the purpose of fast unlocking and reliable locking.

[0010] As a preferred embodiment, the lock body is further provided with a second lock tongue subassembly, the lock seat is further provided with a second lock cavity, the second lock tongue subassembly includes a second lock tongue, a second spring matched with the second lock tongue, and a push handle, the push handle is pushed to make the second lock tongue exit the second lock cavity, so that the lock body can be lifted under the action of external force to realize unlocking, and the lock body falls and the push handle loses external force and is under the action of the restoring force (or elastic force) of the second spring to make the second lock tongue inserted into the second lock cavity to realize locking. The second lock tongue subassembly is arranged to ensure reliable locking and form an insurance effect, avoid the situation that the lock body is accidentally lifted to unlock, and further improve the locking reliability of the child safety door guardrail locking structure in use.

[0011] As preferred, the lock seat is provided with an indicating assembly cooperating with the lock body for indicating the locking structure in the locked state or in the unlocked state. The indicating assembly is provided for the purpose of facilitating the user to observe the state of the locking structure (in the unlocked state or in the locked state) in time, especially for the locked state, to ensure the locking in place and avoid the occurrence of false locking, thereby facilitating the reliable locking of the child safety door guard locking structure in use and further facilitating the child safety.

[0012] As preferred, the indicating assembly comprises an indicating block, a third spring cooperating with the indicating block, and an indicating window provided on the lock seat, the indicating block being provided with a locking indicating portion and an unlocking indicating portion, the locking indicating portion and the unlocking indicating portion being alternatively cooperating with the indicating window. Generally, the outside of the locking indicating portion is displayed in green color, which can be easily observed through the indicating window, thereby determining that the locking structure is in the locked-in-place state and facilitating the avoidance of false locking of the locking structure. Similarly, the outside of the unlocking indicating portion is displayed in red color, which can be easily observed through the indicating window, thereby indicating that the locking structure is in the unlocked state.

[0013] As preferred, the locking indicating portion is located at the outer end of the unlocking indicating portion, when the third spring is subjected to the pressure of the lock body, the locking indicating portion is located at the indicating window for indicating that the lock body is in the locked state, when the third spring gradually loses the pressure of the lock body, the third spring pushes the unlocking indicating portion to move outwardly, so that the unlocking indicating portion is located at the indicating window for indicating that the lock body is in the unlocked state. Through the provision of the third spring, the indicating block can automatically follow the action of the lock body (i.e. the second lock tongue on the lock body) and react to the state of the locking structure in real time.

[0014] As preferred, when the lock body is unlocked, the outer end of the second lock tongue on the second lock tongue assembly in the lock body cooperates with the outer end of the indicating block, when the lock body is in the locked state, the outer end of the second lock tongue abuts against the outer end of the outer end of the indicating block, when the lock body is in the unlocked state, the outer end of the second lock tongue is separated from the outer end of the indicating block, the pressure on the second spring on the second lock tongue assembly (i.e. the elastic force or return force occurring when the second spring is compressed) is greater than the pressure of the third spring (i.e. the elastic force or return force occurring when the third spring is compressed). Since the elastic force of the second spring is greater than the elastic force of the third spring, when unlocked, the indicating block loses the action force of the second lock tongue, the indicating block moves in the direction of the lock seat (i.e. the outer end direction) under the action of the elastic force of the third spring (the third spring gradually returns from the compressed state), the unlocking indicating portion on the indicating block is located at the indicating window. When locked, the indicating block is subjected to the thrust of the second lock tongue, the third spring is compressed, the indicating block moves in the direction away from the lock seat (i.e. the direction away from the lock seat), the locking indicating portion on the indicating block is located at the indicating window.

[0015] The utility model relates to the technical scheme of the second theme: a child safety door guardrail, including guardrail outer frame, set up in the safety door of guardrail outer frame, its characterized in be that the guardrail outer frame includes the first stand and second stand of interval arrangement, the first end of the upper column on the safety door is equipped with the lock body, the upper end of the first stand is equipped with the lock seat, the second end of the upper column is connected in the upper end of the second stand through the first rotatable component, makes the safety door with the first rotatable component as fulcrum swing up and down, lifts to swing open lock upwards, drops to swing lock downwards. The lock body and lock seat in this technical scheme constitute the child safety door guardrail locking structure of preceding. The structure, working principle and action of lock body and lock seat are same with the structure, working principle and action of the technical scheme of the first technical subject.

[0016] As preferred, the guardrail outer frame further comprises a crosspiece connected at the lower end of the first stand and the lower end of the second stand, respectively, the lower column on the safety door cooperates with the crosspiece, the first end of the lower column is connected with the first stand through an up-down moving connection assembly, the second end of the lower column cooperates with the second stand, and the second end of the lower column is directly provided with a second rotatable component. The up-down moving connection assembly and the second rotatable component are beneficial to ensure that the safety door can swing up and down with the first rotatable component and the second rotatable component as fulcrums, and are beneficial to ensure that the safety door can be smoothly and reliably locked, thereby being beneficial to improve the use reliability and safety of the child safety door guardrail, and further being beneficial to ensure the safety of children.

[0017] As preferred, the up-down moving connection assembly comprises a fixed seat and a moving seat cooperating with each other, the fixed seat is fixed to the lower end of the first stand, the fixed seat is provided with a guide block facing the moving seat, the moving seat is fixed to the first end of the lower column, the moving seat is provided with a guide groove penetrating up and down, and the guide block is inserted into the guide groove. The up-down moving connection assembly is beneficial to further ensure that the safety door can be smoothly lifted to unlock and lowered to lock, which is convenient for operation and can ensure the operation reliability, thereby being beneficial to ensure the use reliability and safety of the child safety door guardrail.

[0018] The utility model has the beneficial effect that: 1, simple and reasonable overall structure is favorable for reducing production and processing, assembly, maintenance cost. 2, through the first lock tongue subassembly and the inclined surface cooperation in lock seat, lift lock body (that is the handle of child safety door guardrail) just realize convenient, fast unlocking, loosen lock body. 3, under the self gravity of safety door, lock body and lock seat can be reliably locked, thereby being favorable for improving the use reliability of child safety door guardrail, being favorable for protecting children safety. 4, the setting of second lock tongue subassembly is favorable for preventing locking structure accidental opening, and is favorable for further improving the locking reliability of child safety door guardrail locking structure when using. 5, the setting of indication component, through the indication state of direct observation indication component, prevent the emergence of locking structure false lock situation, can further be favorable for ensuring the locking reliability of safety door guardrail locking structure when using. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figures 2-4 Respectively Figure 1 Three kinds of structural schematic diagrams of different degrees of explosion of lock seat and lock body in it.

[0021] Figure 5 It is Figure 4 An enlarged structural schematic diagram of A part in it.

[0022] Figure 6 It is a partial sectional view structural schematic diagram of the lock seat and lock body involved in the utility model.

[0023] Figure 7 It is Figure 2 An enlarged structural schematic diagram of B part in it.

[0024] In the drawing: 1, lock seat;2, lock body;3, first lock cavity;4, inclined surface;5, first spring;6, first lock tongue;7, second lock cavity;8, second lock tongue;9, second spring;10, push handle;11, indication block;12, third spring;13, locking indication part;14, unlocking indication part;15, indication window;16, safety door;17, first vertical column;18, second vertical column;19, first rotatable assembly;20, second rotatable assembly;21, fixed seat;22, moving seat;23, guide block;24, guide slot;25, upper rail;26, crosspiece;27, lower rail;28, shell. DETAILED DESCRIPTION

[0025] The technical scheme of the utility model will be further specifically explained below by examples and in connection with the drawings.

[0026] Example 1: as Figures 1-7As shown, a child safety door guard locking structure comprises a lock seat 1 and a lock body 2 which is locked or unlocked with the lock seat 1.

[0027] The difference between the technical solution and the prior art mainly lies in that the lock body 2 is provided with at least a first lock tongue assembly, the lock seat 1 is provided with at least a first lock cavity 3, the upper wall of the first lock cavity 3 is an inclined surface 4, the first lock cavity 3 has a shape of a large mouth and a small bottom due to the inclined surface 4, the upper part of the outer end of a first lock tongue 6 on the first lock tongue assembly is in abutting cooperation with the inclined surface 4, when the lock body 2 is moved upward under the action of an external force, the first lock tongue 6 is pressed by the inclined surface 4, so that the first lock tongue 6 is withdrawn from the first lock cavity 3, and unlocking is realized, the lock body 2 loses the external force and is lowered under the action of gravity, the first lock tongue 6 loses the pressing of the inclined surface 4, and the first lock tongue 6 is inserted into the first lock cavity 3, and automatic locking is realized.

[0028] In the technical solution, the overall structure is more reasonable and simple, which is not only beneficial to reducing the production and processing, assembly and maintenance costs, but also beneficial to lifting the lock body 2 (i.e. the handle of the child safety door guard) to realize convenient and quick unlocking through the cooperation of the first lock tongue assembly and the inclined surface 4 in the lock seat 1, loosening the lock body 2, and reliably locking the lock body 2 and the lock seat 1 under the gravity of the safety door 16, so as to improve the use reliability of the child safety door guard and protect the safety of children.

[0029] Next, the above technical solution is described in detail.

[0030] In actual application, the first lock tongue assembly further comprises a first spring 5, the outer end of the first spring 5 is in cooperation with the inner end of the first lock tongue 6, and the inner end of the first spring 5 abuts against the lock body 2.

[0031] Specifically, when the technical solution is used, the lock body 2 is lifted, the first lock tongue 6 is pressed by the inclined surface 4 in the lock seat 1 and is retracted into the lock body 2, and the first spring 5 is in a pressed state and has a reset force (or elastic force), when the lock body 2 is lowered, the first lock tongue 6 gradually extends from the lock seat 1 under the action of the reset force (or elastic force) of the first spring 5 until it is completely inserted into the first lock cavity 3, and the purpose of quick unlocking and reliable locking is achieved.

[0032] In practical application, the lock body 2 is further provided with a second lock tongue assembly, the lock base 1 is further provided with a second lock cavity 7, the second lock tongue assembly comprises a second lock tongue 8, a second spring 9 matched with the second lock tongue 8 and a push knob 10, the push knob 10 is pushed to make the second lock tongue 8 exit the second lock cavity 7, the lock body 2 can be lifted under external force to realize unlocking, the lock body 2 falls and the push knob 10 loses external force and is reset by the reset force (or elastic force) of the second spring 9 to make the second lock tongue 8 insert into the second lock cavity 7 to realize locking.

[0033] In the technical solution, the second lock tongue assembly is arranged to ensure reliable locking, forms an insurance effect for locking and avoids the situation that the lock body 2 is accidentally lifted to realize unlocking, which is beneficial to further improve the locking reliability of the child safety door guard rail locking structure in use.

[0034] In practical application, the lock base 1 is provided with an indication assembly matched with the lock body 2 to indicate whether the locking structure is in a locked state or an unlocked state. The indication assembly is arranged to facilitate the user to observe the state (in an unlocked state or a locked state) of the locking structure in time, especially for the locked state, the locked state needs to be ensured to be in place to avoid the situation of false locking, thereby being beneficial to ensure the reliable locking of the child safety door guard rail locking structure in use and further being beneficial to ensure the safety of children.

[0035] In practical application, the indication assembly comprises an indication block 11, a third spring 12 matched with the indication block 11 and an indication window 15 arranged on the lock base 1, the indication block 11 has a locking indication part 13 and an unlocking indication part 14, the locking indication part 13 and the unlocking indication part 14 are alternatively matched with the indication window 15. Generally, the outside of the locking indication part 13 displays green color, the color can be easily seen through the indication window 15 to determine that the locking structure is in a locked-in-place state, which is beneficial to avoid the situation of false locking of the locking structure. Similarly, the outside of the unlocking indication part 14 displays red color, the color can be easily seen through the indication window 15 to indicate that the locking structure is in an unlocked state.

[0036] In practical application, the locking indicating part 13 is located at the outer end of the unlocking indicating part 14, when the third spring 12 is pressed by the lock body 2, the locking indicating part 13 is located at the indicating window 15, for indicating that the lock body 2 is in the locking state, when the third spring 12 gradually loses the pressure of the lock body 2, the third spring 12 pushes the unlocking indicating part 14 to move outward, so that the unlocking indicating part 14 is located at the indicating window 15, for indicating that the lock body 2 is in the unlocking state. Through the setting of the third spring 12, the indicating block 11 can automatically follow the action of the lock body 2 (i.e. the second lock bolt 8 on the lock body 2) and act, and the state of the locking structure can be reacted in real time.

[0037] In practical application, when the lock body 2 is unlocked, the outer end of the second lock bolt 8 on the second lock bolt assembly in the lock body 2 cooperates with the outer end of the indicating block 11, when the lock body 2 is in the locking state, the outer end of the second lock bolt 8 presses the outer end of the outer end of the indicating block 11, when the lock body 2 is in the unlocking state, the outer end of the second lock bolt 8 is separated from the outer end of the indicating block 11, and the pressure on the second spring 9 on the second lock bolt assembly (i.e. the elastic force or reset force generated when the second spring 9 is compressed) is greater than the pressure of the third spring 12 (i.e. the elastic force or reset force generated when the third spring 12 is compressed). Because the elastic force of the second spring 9 is greater than the elastic force of the third spring 12, when unlocking, the indicating block 11 loses the action force of the second lock bolt 8, the indicating block 11 moves towards the direction of the lock housing 1 (i.e. the outer end direction) under the action of the elastic force of the third spring 12 (the third spring 12 gradually resets from the compressed state), and the unlocking indicating part 14 on the indicating block 11 is located at the indicating window 15. When locking, the indicating block 11 is pushed by the second lock bolt 8, the third spring 12 is compressed, the indicating block 11 moves in the inward direction (i.e. away from the lock housing 1), and the locking indicating part 13 on the indicating block 11 is located at the indicating window 15.

[0038] Embodiment 2: as shown in the Figures 1-7 The technical scheme of the second subject of the utility model relates to:

[0039] A child safety door guardrail, comprising a guardrail outer frame, a safety door 16 arranged in the guardrail outer frame.

[0040] The difference between the technical scheme and the prior art is that: the guardrail outer frame comprises a first vertical column 17 and a second vertical column 18 arranged at a distance, a first end of an upper rail 25 on the safety door 16 is provided with the lock body 2 of embodiment 1, an upper end of the first vertical column 17 is provided with the lock housing 1 of embodiment 1, and a second end of the upper rail 25 is connected to an upper end of the second vertical column 18 through a first rotatable assembly 19, so that the safety door 16 swings up and down with the first rotatable assembly 19 as a fulcrum, and the safety door 16 is unlocked by upward swinging and upward lifting, and the safety door 16 is locked by downward swinging and downward lowering.

[0041] The lock body 2 and the lock base 1 constitute the aforementioned child safety door guardrail locking structure. The structure, working principle and function of the lock body 2 and the lock base 1 are the same as those of the structure, working principle and function of the first technical subject.

[0042] In the present technical solution, the lock body 2 also serves as the handle of the safety door 16 on the child safety door guardrail, and in order to improve the hand feeling and visual effect, an outer shell 28 is often arranged on the outside of the lock body 2.

[0043] In actual application, the guardrail outer frame further comprises a crosspiece 26 connected to the lower end of the first upright column 17 and the lower end of the second upright column 18 respectively, the lower rail 27 on the safety door 16 cooperates with the crosspiece 26, the first end of the lower rail 27 is connected to the first upright column 17 through an up-down moving connection assembly, the second end of the lower rail 27 cooperates with the second upright column 18, and the second end of the lower rail 27 is directly provided with a second rotatable assembly 20.

[0044] In the present technical solution, the arrangement of the up-down moving connection assembly and the second rotatable assembly 20 is conducive to ensuring that the safety door 16 can swing up and down with the first rotatable assembly 19 and the second rotatable assembly 20 as fulcrums, and conducive to ensuring that the safety door 16 can be smoothly and reliably locked, thereby being conducive to improving the use reliability and safety of the child safety door guardrail, and further being conducive to ensuring the safety of children.

[0045] In actual application, the up-down moving connection assembly comprises a fixed seat 21 and a moving seat 22 that cooperate with each other, the fixed seat 21 is fixed to the lower end of the first upright column 17, the fixed seat 21 is provided with a guide block 23 arranged towards the moving seat 22, the moving seat 22 is fixed to the first end of the lower rail 27, the moving seat 22 is provided with a guide groove 24 that penetrates up and down, and the guide block 23 is inserted into the guide groove 24.

[0046] In the present technical solution, the arrangement of the up-down moving connection assembly is conducive to further ensuring that the safety door 16 can be smoothly lifted to unlock and put down to lock, which is convenient for operation and can ensure the operation reliability, thereby being conducive to improving the use reliability and safety of the child safety door guardrail.

[0047] The first rotatable assembly 19 and the second rotatable assembly 20 involved in the present technical solution are not the focus of the protection of the present patent, and for those skilled in the art, all existing technologies that can realize vertical (i.e. perpendicular to the horizontal aspect) rotation are feasible solutions.

[0048] Further supplement to the embodiment 1 and the embodiment 2, when the lock body and the lock base are reversed and arranged oppositely, it also belongs to the protection scope of the utility model, that is, the lock body is arranged on the guardrail outer frame (commonly known as door frame), the lock base is arranged on the safety door, and appropriate direction arrangement is adopted, the lock base is lifted to unlock, and the direction lock base is locked.

[0049] The above merely describes preferred embodiments of the utility model and is not intended to limit the utility model. In the above embodiments, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A child safety gate lock structure comprising a lock housing (1), a lock body (2) which cooperates with the lock housing (1) for locking or unlocking, characterized in that The lock body (2) is provided with at least a first latch assembly, and the lock seat (1) is provided with at least a first lock cavity (3). The upper wall of the first lock cavity (3) is an inclined surface (4). The inclined surface (4) makes the first lock cavity (3) have a shape that is wider at the top and narrower at the bottom. The upper part of the outer end of the first latch (6) on the first latch assembly abuts against the inclined surface (4). When the lock body (2) is subjected to an external force and moves upward, the first latch (6) is pressed by the inclined surface (4), causing the first latch (6) to exit the first lock cavity (3) and unlock. When the lock body (2) loses the external force and is under the action of gravity, the lock body (2) descends, the first latch (6) loses the pressure of the inclined surface (4), and the first latch (6) is inserted into the first lock cavity (3) to achieve automatic locking.

2. The child safety door guard locking structure according to claim 1, wherein The first latch assembly also includes a first spring (5), the outer end of the first spring (5) engages with the inner end of the first latch (6), and the inner end of the first spring (5) abuts against the lock body (2).

3. A child safety gate barrier lock structure according to claim 1 or 2, characterised in that The lock body (2) is also provided with a second latch assembly, and the lock seat (1) is also provided with a second lock cavity (7). The second latch assembly includes a second latch (8), a second spring (9) that cooperates with the second latch (8), and a push handle (10). Pushing the push handle (10) causes the second latch (8) to exit the second lock cavity (7), so that the lock body (2) can be lifted under the action of external force to unlock. The lock body (2) falls and the push handle (10) loses external force and is subjected to the restoring force of the second spring (9), so that the second latch (8) is inserted into the second lock cavity (7) to lock.

4. The child safety gate lock structure of claim 1 or 2, wherein An indicator component is provided on the lock base (1), which cooperates with the lock body (2) to indicate whether the locking structure is in a locked state or an unlocked state.

5. The child safety door guard locking arrangement of claim 4, wherein The indicator assembly includes an indicator block (11), a third spring (12) cooperating with the indicator block (11), and an indicator window (15) disposed on the lock base (1). The indicator block (11) has a locking indicator (13) and an unlocking indicator (14), and one of the locking indicator (13) and the unlocking indicator (14) cooperates with the indicator window (15).

6. The child safety door guard locking arrangement of claim 5, wherein The locking indicator (13) is located at the outer end of the unlocking indicator (14). When the third spring (12) is subjected to pressure from the lock body (2), the locking indicator (13) is located in the indicator window (15) to indicate that the lock body (2) is in a locked state. When the third spring (12) gradually loses pressure from the lock body (2), the third spring (12) pushes the unlocking indicator (14) to move outward, so that the unlocking indicator (14) is located in the indicator window (15) to indicate that the lock body (2) is in an unlocked state.

7. A child safety gate barrier lock structure according to claim 6, wherein When the lock body (2) is unlocked, the outer end of the second bolt (8) on the second bolt assembly in the lock body (2) is matched with the outer end of the indicating block (11), when the lock body (2) is in the locked state, the outer end of the second bolt (8) presses the outer end of the outer end of the indicating block (11), when the lock body (2) is in the unlocked state, the outer end of the second bolt (8) is separated from the outer end of the indicating block (11), the pressure on the second spring (9) on the second bolt assembly is greater than the pressure of the third spring (12).

8. A child safety gate comprising a gate frame, a safety door (16) disposed in the gate frame, characterized in that The outer frame of the guardrail includes first and second upright columns (17) and (18) arranged at intervals, the first end of the upper rail (25) on the safety door (16) is provided with the lock body (2) according to any one of claims 1-7, the upper end of the first upright column (17) is provided with the lock seat (1) according to any one of claims 1-7, the second end of the upper rail (25) is connected to the upper end of the second upright column (18) through the first rotatable assembly (19), so that the safety door (16) swings up and down with the first rotatable assembly (19) as the fulcrum, and is unlocked by lifting up and locked by lowering down.

9. A child safety door guard according to claim 8, characterised in that The outer frame of the guardrail further includes a crosspiece (26) connected to the lower ends of the first and second upright columns respectively, the lower rail (27) on the safety door (16) is matched with the crosspiece (26), the first end of the lower rail (27) is connected to the first upright column (17) through an up-down moving connection assembly, the second end of the lower rail (27) is matched with the second upright column (18), and the second end of the lower rail (27) is directly provided with the second rotatable assembly (20) with the crosspiece (26).

10. A child safety door guard according to claim 9, characterised in that The up-down moving connection assembly includes a fixed seat (21) and a moving seat (22) matched with each other, the fixed seat (21) is fixed to the lower end of the first upright column (17), the fixed seat (21) is provided with a guide block (23) arranged towards the moving seat (22), the moving seat (22) is fixed to the first end of the lower rail (27), and the moving seat (22) is provided with a guide groove (24) penetrating up and down.

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