A child gate mounting device for a stairway

Abstract

The utility model discloses a kind of child gate rail mounting devices for staircase, when needing to install mounting device to protective rail, base contact is attached to the outside of protective rail, and make flexible band pass through protective rail, flexible band is moved relative to first locking piece along length direction, until flexible band and base clamp hold protective rail, subsequently first locking piece can lock the position of flexible band relative to base, so that flexible band and base form rail clamp hold hole, clamp hold on protective rail, subsequently child gate rail can be installed;When needing to disassemble mounting device, first locking piece can unlock flexible band, so that flexible band loosen protective rail, and then mounting device can be disassembled;The above-mentioned child gate rail mounting device is fixed to protective rail by annular clamping mode, relative to the mode of directly abutting on protective rail, it can be installed more stable, and it is suitable for different specifications of protective rail.

Description

Technical Field

[0001] This utility model relates to children's door railings, and more particularly to a children's door railing installation device for stairs. Background Technology

[0002] Child safety gates can be installed on stairs or doorways to provide a safe space for children. Some existing child safety gates consist of a gate body and mounting devices at both ends. The gate body directly abuts the mounting devices against the side walls or stair railings to secure the gate. However, when installed on stairs, this type of child safety gate has a small contact area between the mounting device and the railing, making the installation less secure and posing a risk of loosening. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a child safety gate installation device for stairs, which can be more securely installed on the stair railing.

[0004] A child door railing installation device for stairs according to an embodiment of the present invention includes a base, a flexible strip, and a first locking member. The base is provided with a door railing installation structure for installing the door railing; one end of the flexible strip is disposed on the base, and the other end is a free end; the first locking member is movably disposed on the base, and the flexible strip can move relative to the first locking member along its length direction. The first locking member can lock or unlock the position of the flexible strip relative to the base. When the first locking member locks the position of the flexible strip relative to the base, the flexible strip and the base enclose to form a railing clamping hole.

[0005] The child door railing installation device for stairs according to the present utility model embodiment has at least the following beneficial effects: When the installation device needs to be installed on the guardrail, the base contacts and abuts the outside of the guardrail, and the flexible strip passes around the guardrail. The flexible strip moves relative to the first locking member along its length until the flexible strip and the base clamp the guardrail. Then the first locking member can lock the position of the flexible strip relative to the base, so that the flexible strip and the base form a railing clamping hole, clamping onto the guardrail, and then the child door railing can be installed; when the installation device needs to be disassembled, the first locking member can unlock the flexible strip, so that the flexible strip releases the guardrail, and then the installation device can be disassembled; the above-mentioned child door railing installation device is fixed to the guardrail by a ring clamping method, which can be more stable than the method of directly abutting against the guardrail, and is suitable for guardrails of different specifications.

[0006] According to some embodiments of the present invention, the first locking member is rotatably disposed on the base, and a limiting through groove is formed between the first locking member and the base for the flexible belt to pass through. The flexible belt is provided with a plurality of stop grooves arranged along its length direction. The first locking member is provided with a stop block. When the flexible belt passes through the limiting through groove, the first locking member can rotate to a position that causes the stop block to enter or disengage from the stop groove.

[0007] According to some embodiments of the present invention, the middle part of the first locking member is rotatably connected to the base, the first locking member is provided with a toggle part, and the toggle part and the gear shift block are respectively placed on both sides of the rotation axis of the first locking member.

[0008] According to some embodiments of the present invention, the first locking member is rotatably disposed on the base and has a locked position and an unlocked position. A limiting groove for the flexible belt to pass through is formed between the first locking member and the base. In the locked position, the first locking member allows the flexible belt to move forward along the limiting groove and stops and restricts the flexible belt from moving backward along the limiting groove. In the unlocked position, the flexible belt can move forward and backward relative to the limiting groove.

[0009] According to some embodiments of this utility model, the flexible belt is provided with a plurality of gear slots arranged along its length direction. The first locking member is provided with a gear block. The gear block is provided with a guide surface and a stop surface. The stop surface is located on the front side of the gear block, and the guide surface is located on the rear side of the gear block. In the locked position, the gear block is inserted into the gear slot. The flexible belt can move forward and push the gear block away from the current gear slot through the guide surface to enter the next gear slot. The stop surface can abut against the groove wall of the gear slot to prevent the flexible belt from moving backward.

[0010] According to some embodiments of the present invention, a second locking member is further included. The second locking member is movably disposed on the base and can move to a stop position and a avoidance position. In the stop position, the second locking member restricts the rotation angle of the first locking member; in the avoidance position, the second locking member avoids the first locking member.

[0011] According to some embodiments of the present invention, the base includes a main body, a mounting block, and an adjustment mechanism. The gate mounting structure is disposed on the main body, the first locking member is movably disposed on the main body, one end of the flexible strip is fixedly connected to the mounting block, the mounting block is movably disposed on the main body along a first direction, and the adjustment mechanism is disposed between the mounting block and the main body and is used to adjust the position of the mounting block relative to the main body to adjust the size of the railing clamping hole.

[0012] According to some embodiments of the present invention, the adjusting mechanism includes a bolt and a first nut. The base is provided with a clearance through hole along a first direction. The first nut is fixedly connected to the mounting block. The bolt passes through the clearance through hole and is threadedly connected to the first nut. The bolt has a threaded head. The clearance through hole is located between the threaded head and the first nut.

[0013] According to some embodiments of the present invention, the base is provided with a partition rod insertion hole on one side or opposite sides for inserting the partition rod body, and the axis of the partition rod insertion hole is parallel to the axis of the railing clamping hole.

[0014] According to some embodiments of the present invention, the gate railing mounting structure includes a second nut, the base is provided with a mounting groove, the second nut is slidably disposed in the mounting groove, the wall of the mounting groove is provided with a clearance notch extending to the outer wall of the base, the clearance notch is strip-shaped and extends along the length direction of the mounting groove; the base is provided with a friction plate, the friction plate is located on the wall of the railing clamping hole.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a perspective view of the child gate installation device according to an embodiment of the present utility model;

[0018] Figure 2 A perspective view of the child gate installation device according to an embodiment of the present utility model when the partition bar is removed;

[0019] Figure 3 This is a perspective view of the child gate installation device according to an embodiment of the present utility model;

[0020] Figure 4 This is an exploded view of the child gate installation device according to an embodiment of the present utility model;

[0021] Figure 5 This is an embodiment of the present utility model. Figure 2 A cross-sectional view along the AA direction;

[0022] Figure 6 This is an embodiment of the present utility model. Figure 2 A cross-sectional view along the BB direction.

[0023] Figure 7 This is an embodiment of the present utility model. Figure 5 A schematic diagram showing the first locking element in the locked position;

[0024] Figure 8 This is an embodiment of the present utility model. Figure 5 A schematic diagram showing the first locking element in the unlocked position.

[0025] Figure label:

[0026] Base 100, gate mounting structure 110, second nut 111, main body 120, clearance through hole 121, partition rod insertion hole 122, mounting groove 123, clearance notch 124, mounting block 130, adjusting mechanism 140, bolt 141, screw head 1411, first nut 142, friction plate 150.

[0027] Flexible belt 200, stop groove 210;

[0028] First locking component 300, gear position block 310, guide surface 311, stop surface 312, and actuating part 320;

[0029] The railing clamping hole is 410, and the limiting through groove is 420.

[0030] Second locking element 500;

[0031] Divider rod 600. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0036] There are also some existing child safety gates that can be installed onto stair railings using a mounting device. This device includes a first clamp, a second clamp, and two bolt-nut pairs. The first and second clamps are positioned on opposite radial sides of the railing, and the ends of the first and second clamps are locked together using bolt-nut pairs, clamping the first and second clamps onto the outside of the railing. The child safety gate can then be installed on the first clamp, thus achieving installation on the stair railing. However, this mounting device still has insufficient contact area with the railing, resulting in an unstable installation.

[0037] Reference Figures 1 to 8 This utility model discloses a child door railing installation device for stairs, comprising a base 100, a flexible strip 200, and a first locking member 300. The base 100 is provided with a door railing installation structure 110 for installing the door railing; one end of the flexible strip 200 is disposed on the base 100, and the other end is a free end; the first locking member 300 is movably disposed on the base 100, and the flexible strip 200 can move relative to the first locking member 300 along its length. The first locking member 300 can lock or unlock the position of the flexible strip 200 relative to the base 100. When the first locking member 300 locks the position of the flexible strip 200 relative to the base 100, the flexible strip 200 and the base 100 enclose each other to form a railing clamping hole 410.

[0038] When the installation device needs to be installed on the guardrail, the base 100 contacts and abuts the outside of the guardrail, and the flexible strip 200 wraps around the guardrail. The flexible strip 200 moves along its length relative to the first locking member 300 until the flexible strip 200 and the base 100 clamp the guardrail. Then the first locking member 300 can lock the position of the flexible strip 200 relative to the base 100, so that the flexible strip 200 and the base 100 form a guardrail clamping hole 410, clamping onto the guardrail, and then the child gate can be installed. When it is necessary to remove the installation device, the first locking member 300 can unlock the flexible strip 200, so that the flexible strip 200 releases the guardrail, and then the installation device can be removed. The above-mentioned child gate installation device is fixed to the guardrail by a ring clamping method, which is more stable than the method of directly abutting against the guardrail, and is suitable for guardrails of different specifications.

[0039] It should be understood that after the flexible belt 200 passes around the guardrail, during its movement along its length relative to the first locking member 300, it can gradually adapt to the diameter of the current guardrail. That is, it can adjust the size of the guardrail clamping hole 410 according to the diameter of the guardrail, so as to achieve the effect of being suitable for guardrails of different specifications.

[0040] In this embodiment, the first locking member 300 is rotatably mounted on the base 100. A limiting groove 420 for the flexible belt 200 to pass through is formed between the first locking member 300 and the base 100. The flexible belt 200 has multiple stop slots 210 arranged along its length. The first locking member 300 is provided with a stop block 310. When the flexible belt 200 passes through the limiting groove 420, the first locking member 300 can rotate to a position where the stop block 310 enters or disengages from the stop slot 210. When the stop block 310 enters the nearest stop slot 210, it can lock the flexible belt 200 in the current position. By arranging multiple stop slots 210 along its length, the stop block 310 can switch into different stop slots, thereby enabling the first locking member 300 to lock the flexible belt 200 at various length positions, making it suitable for guardrails of various specifications.

[0041] In this embodiment, the middle part of the first locking member 300 is rotatably connected to the base 100. The first locking member 300 is provided with a toggle part 320, and the toggle part 320 and the stop block 310 are respectively located on both sides of the rotation axis of the first locking member 300. The aforementioned first locking member 300 has a lever structure, which facilitates unlocking the flexible band 200 by pressing, and has a good performance.

[0042] In this embodiment, the first locking member 300 is rotatably disposed on the base 100 and has a locked position and an unlocked position. A limiting groove 420 for the flexible belt 200 to pass through is formed between the first locking member 300 and the base 100. In the locked position, the first locking member 300 allows the flexible belt 200 to move forward along the limiting groove 420 and stops and restricts the flexible belt 200 from moving backward along the limiting groove 420. In the unlocked position, the flexible belt 200 can move forward and backward relative to the limiting groove 420.

[0043] In the aforementioned installation device, when the first locking member 300 is in the locked position, the flexible band 200 is allowed to be pulled further forward, facilitating a tighter grip on the guardrail and preventing the flexible band 200 from loosening backward, making the tightening process of gripping the guardrail more convenient. When the first locking member 300 is in the unlocked position, the flexible band 200 is allowed to loosen backward to release the guardrail.

[0044] In this embodiment, the flexible belt 200 is provided with a plurality of gear slots 210 arranged along its length. The first locking member 300 is provided with a gear block 310. The gear block 310 is provided with a guide surface 311 and a stop surface 312. The stop surface 312 is located on the front side of the gear block 310, and the guide surface 311 is located on the rear side of the gear block 310. In the locked position, the gear block 310 is inserted into the gear slot 210. The flexible belt 200 can move forward and push the gear block 310 out of the current gear slot 210 through the guide surface 311 to enter the next gear slot 210. The stop surface 312 can abut against the groove wall of the gear slot 210 to stop the flexible belt 200 from moving backward.

[0045] When the first locking member 300 is in the locked position, if the flexible band 200 is subjected to a forward pulling force, the groove wall of the gear slot 210 can abut against the guide surface 311, causing the first locking member 300 and the flexible band 200 to undergo a small elastic deformation, so that the gear block 310 can disengage from the current gear slot 210 and enter the next gear slot 210, thereby allowing the flexible band 200 to be further tightened forward; due to the presence of the stop surface 312, the stop surface 312 can contact and block the groove wall of the current gear slot 210, and together with the limiting through groove 420, it can limit the position of the flexible band 200, thereby limiting the flexible band 200 from moving backward.

[0046] Specifically, the guide surface 311 is inclined relative to the extension direction of the limiting groove 420, and the guide surface 311 is set at an acute angle to the forward direction of the flexible belt 200, so that the flexible belt 200 can push the stop block 310 out of the current stop groove 210 and enter the next stop groove 210 through the guide surface 311. The stop surface 312 is approximately perpendicular to the extension direction of the limiting groove 420, thereby better restricting the backward movement of the flexible belt 200. Specifically, the limiting groove 420 extends in the front-back direction.

[0047] It is conceivable that in other embodiments, the guide surface 311 may also be an approximately curved surface, and those skilled in the art may choose according to actual needs.

[0048] It is understood that the flexible belt 200 may have three or more slots 210 arranged along its length, and those skilled in the art may select them according to actual needs.

[0049] Specifically, the first locking member 300 is pivotally connected to the base 100 via a pivot, and the locking and unlocking positions are switched by rotation. It is conceivable that in other embodiments, the first locking member 300 can also be locked or unlocked by slidingly mounting it to the base 100. For example, the flexible band 200 has multiple pin holes arranged along its length, the first locking member 300 is slidably mounted on the base 100, the first locking member 300 is provided with a pin, and a spring is provided between the base 100 and the first locking member 300. The spring can drive the first locking member 300 to be held inserted into one of the pin holes by the pin, thus locking the position of the flexible band 200 relative to the first locking member 300 along its length. When the user moves the first locking member 300, causing it to disengage from the flexible band 200, the flexible band 200 is allowed to adjust its position relative to the first locking member 300 along its length. Alternatively, the first locking member 300 may be provided with a Velcro strip along its length, and the first locking member 300 may also be provided with a Velcro block. The position of the flexible strip 200 relative to the first locking member 300 along its length can be locked by the Velcro block and a portion of the Velcro strip being attached together.

[0050] In this embodiment, a second locking member 500 is also included. The second locking member 500 is movably disposed on the base 100 and can move to a stop position and a avoidance position. In the stop position, the second locking member 500 restricts the rotation angle of the first locking member 300; in the avoidance position, the second locking member 500 avoids the first locking member 300.

[0051] By setting a second locking member 500, when the first locking member 300 is in the locked position and the second locking member 500 is in the stop position, children can be prevented from accidentally unlocking the first locking member 300. When it is necessary to rotate the first locking member 300 to the unlock position, the second locking member 500 must first be moved to the avoidance position before the first locking member 300 can be rotated, thus improving the safety of the installation device.

[0052] Specifically, the second locking member 500 is a locking pin, which is slidably connected to the base 100. When the locking pin is in the stop position, one end of the locking pin prevents the first locking member 300 from rotating. It is conceivable that in some other embodiments, the second locking member 500 may also be a locking block rotatably connected to the base 100, which can be rotated to the stop position or the avoidance position. Those skilled in the art can choose according to actual needs.

[0053] Furthermore, the locking pin can also be slidably mounted and dismounted relative to the base 100 for easy assembly and disassembly.

[0054] Understandably, in some embodiments, when the second locking member 500 is in the stop position, the first locking member 300 remains in the locked position. At this time, the flexible band 200 can also move forward through the limiting groove 420. During this process, the flexible band 200 pushes the gear position block 310 through the guide surface 311, causing the first locking member 300 to undergo a small elastic deformation, allowing the gear position block 310 to disengage from the current gear position slot 210 and enter the next gear position slot. At this time, the first locking member 300 stops the flexible band 200 from moving backward, similar to a cable tie.

[0055] It is understood that in some other embodiments, when the first locking member 300 is in the locked position, the flexible band 200 can be completely locked; when the first locking member 300 is in the unlocked position, the flexible band 200 can move back and forth. That is, when the installation device is installed on the guardrail, the first locking member 300 is first switched to the unlocked position, then the flexible band 200 is tightened, and then the first locking member 300 is switched to the locked position, and the first locking member 300 is fixed in the locked position by the second locking member 500.

[0056] In this embodiment, the base 100 includes a main body 120, a mounting block 130, and an adjustment mechanism 140. The gate mounting structure 110 is disposed on the main body 120, the first locking member 300 is movably disposed on the main body 120, one end of the flexible belt 200 is fixedly connected to the mounting block 130, the mounting block 130 is movably disposed on the main body 120 along a first direction, and the adjustment mechanism 140 is disposed between the mounting block 130 and the main body 120 and is used to adjust the position of the mounting block 130 relative to the main body 120 to adjust the size of the railing clamping hole 410.

[0057] When the flexible band 200 cannot be pulled forward, the stop block 310 may not be able to cross the distance between two adjacent stop slots 210 to further tighten it. At this time, the flexible band 200 and the base 100 may not be fully gripping the guardrail. Therefore, the position of the mounting block 130 relative to the main body 120 is further adjusted by the adjusting mechanism 140, thereby fine-tuning the size of the guardrail clamping hole 410. This allows the flexible band 200 to be tightened more significantly, so that the flexible band 200 and the base 100 grip the guardrail as tightly as possible, improving the installation stability of the mounting device.

[0058] Specifically, the mounting block 130 and the flexible belt 200 are integrated into a single structural component, reducing the number of parts.

[0059] In an embodiment, the adjusting mechanism 140 includes a bolt 141 and a first nut 142. The base 100 is provided with a clearance through hole 121 along a first direction. The first nut 142 is fixedly connected to the mounting block 130. The bolt 141 passes through the clearance through hole 121 and is threadedly connected to the first nut 142. The bolt 141 has a threaded head 1411. The clearance through hole 121 is located between the threaded head 1411 and the first nut 142.

[0060] When tightening bolt 141, the position of mounting block 130 can be finely adjusted along the first direction. The adjustment mechanism 140 is relatively simple and reliable, and the position of mounting block 130 is adjusted by driving the bolt and nut structure, with a sufficiently large driving force.

[0061] In this embodiment, the first direction is the front-to-back direction, which provides a better adjustment effect. It is understood that in other embodiments, the first direction can be other directions, as long as the size of the railing clamping hole 410 can be adjusted.

[0062] It is conceivable that in other embodiments, the adjustment mechanism 140 may also be other structures. For example, the base 100 is provided with a threaded through hole, a screw is threaded into the threaded through hole, and one end of the screw abuts against the mounting block 130. When the screw is tightened, it can push the mounting block 130 to move slightly to further tighten the clamping guardrail.

[0063] Specifically, the base 100 has a sliding hole along the first direction, and the mounting block 130 is slidably disposed in the sliding hole, allowing the through hole 121 to be located at the bottom of the sliding hole. It is conceivable that the mounting block 130 can also be slidably connected to the base 100 through a slide rail slider structure, so as to be movable relative to the base 100.

[0064] In this embodiment, the base 100 has partition rod insertion holes 122 on opposite sides for inserting partition rod bodies 600. The axis of the partition rod insertion hole 122 is parallel to the axis of the railing clamping hole 410. The mounting devices are typically used in pairs, arranged vertically at intervals. The two mounting devices are then inserted into both ends of the partition rod body 600. Since some guardrails may have a smaller diameter in the middle and a larger diameter at both ends, when the two mounting devices are installed at both ends of the guardrail, there is a large space between the middle section of the guardrail and the gate, which could cause a child's head to get stuck, posing a safety hazard. Therefore, the partition rod insertion holes 122 are provided. After inserting the partition rod, this space can be divided into smaller spaces, reducing the risk of a child's limbs getting stuck.

[0065] In this embodiment, the base 100 has partition rod insertion holes 122 on both the upper and lower sides. It is conceivable that in other embodiments, the partition rod insertion holes 122 may only be provided on the upper or lower side.

[0066] In this embodiment, the gate mounting structure 110 includes a second nut 111. The base 100 has a mounting groove 123. The second nut 111 is slidably disposed in the mounting groove 123. The wall of the mounting groove 123 has a clearance notch 124 extending through to the outer wall of the base 100. The clearance notch 124 is strip-shaped and extends along the length of the mounting groove 123. The mounting screws of the gate can extend through the clearance notch 124 and are threadedly connected to the second nut 111. When the screws are tightened, friction causes the second nut 111 to be fixed relative to the base 100, at which point the gate is mounted on the mounting device. When the screws are not tightened, the second nut 111 can slide along the depth direction of the mounting groove 123, adapting to gates with different screw positions and specifications.

[0067] Specifically, the gate mounting structure 110 has two second nuts 111.

[0068] It is conceivable that in other embodiments, the door frame mounting structure 110 may also be a structure such as a snap-fit ​​block or a plug-in block, which is assembled and matched with the door frame by snap-fit ​​or plug-in.

[0069] In this embodiment, the base 100 is provided with a friction plate 150, which is located on the wall of the guardrail clamping hole 410. By providing the friction plate 150, the friction between the installation device and the guardrail can be increased, reducing the risk of slippage of the installation device. Specifically, the friction plate 150 can be made of a sheet with a high coefficient of friction, such as a rubber sheet or a silicone sheet, and preferably has a certain degree of elasticity, so that the friction plate 150 can tightly abut against the guardrail, increasing the friction between the two.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0071] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A child doorway installation device for stairs, characterized in that, include: The base (100) is provided with a door frame mounting structure (110) for mounting the door frame; A flexible strip (200) has one end attached to the base (100) and the other end is a free end; A first locking member (300) is movably disposed on the base (100). The flexible band (200) can move relative to the first locking member (300) along its length. The first locking member (300) can lock or unlock the position of the flexible band (200) relative to the base (100). When the first locking member (300) locks the position of the flexible band (200) relative to the base (100), the flexible band (200) and the base (100) enclose to form a railing clamping hole (410).

2. The child doorway installation device for stairs according to claim 1, characterized in that: The first locking member (300) is rotatably disposed on the base (100). A limiting through groove (420) for the flexible belt (200) to pass through is formed between the first locking member (300) and the base (100). The flexible belt (200) is provided with a plurality of gear slots (210) arranged along its length direction. The first locking member (300) is provided with a gear stop block (310). When the flexible belt (200) passes through the limiting through groove (420), the first locking member (300) can rotate to a position that allows the gear stop block (310) to enter or leave the gear slot (210).

3. The child doorway installation device for stairs according to claim 2, characterized in that: The middle part of the first locking member (300) is rotatably connected to the base (100). The first locking member (300) is provided with a toggle part (320). The toggle part (320) and the gear block (310) are respectively placed on both sides of the rotation axis of the first locking member (300).

4. The child doorway installation device for stairs according to claim 1, characterized in that: The first locking member (300) is rotatably disposed on the base (100) and has a locked position and an unlocked position. A limiting groove (420) is formed between the first locking member (300) and the base (100) for the flexible belt (200) to pass through. In the locked position, the first locking member (300) allows the flexible belt (200) to move forward along the limiting groove (420) and stops and restricts the flexible belt (200) from moving backward along the limiting groove (420). In the unlocked position, the flexible belt (200) can move forward and backward relative to the limiting groove (420).

5. The child doorway installation device for stairs according to claim 4, characterized in that: The flexible strip (200) has multiple gear slots (210) arranged along its length. The first locking member (300) is provided with a gear block (310). The gear block (310) is provided with a guide surface (311) and a stop surface (312). The stop surface (312) is located on the front side of the gear block (310), and the guide surface (311) is located on the rear side of the gear block (310). Position, the gear shift block (310) is inserted into the gear shift slot (210), the flexible belt (200) can move forward and push the gear shift block (310) out of the current gear shift slot (210) through the guide surface (311) to enter the next gear shift slot (210), the stop surface (312) can abut against the groove wall of the gear shift slot (210) to stop the flexible belt (200) from moving backward.

6. The child doorway installation device for stairs according to claim 1 or 4, characterized in that: It also includes a second locking member (500), which is movably disposed on the base (100) and can move to a stop position and a avoidance position. In the stop position, the second locking member (500) restricts the rotation angle of the first locking member (300); in the avoidance position, the second locking member (500) avoids the first locking member (300).

7. The child doorway installation device for stairs according to claim 1, characterized in that: The base (100) includes a main body (120), a mounting block (130), and an adjustment mechanism (140). The gate mounting structure (110) is disposed on the main body (120). The first locking member (300) is movably disposed on the main body (120). One end of the flexible strip (200) is fixedly connected to the mounting block (130). The mounting block (130) is movably disposed on the main body (120) along a first direction. The adjustment mechanism (140) is disposed between the mounting block (130) and the main body (120) and is used to adjust the position of the mounting block (130) relative to the main body (120) to adjust the size of the railing clamping hole (410).

8. The child doorway installation device for stairs according to claim 7, characterized in that: The adjusting mechanism (140) includes a bolt (141) and a first nut (142). The base (100) is provided with a clearance through hole (121) along a first direction. The first nut (142) is fixedly connected to the mounting block (130). The bolt (141) passes through the clearance through hole (121) and is threadedly connected to the first nut (142). The bolt (141) has a threaded head (1411). The clearance through hole (121) is located between the threaded head (1411) and the first nut (142).

9. The child doorway installation device for stairs according to claim 1, characterized in that: The base (100) has a partition rod insertion hole (122) on one side or opposite sides for inserting the partition rod body (600), and the axis of the partition rod insertion hole (122) is parallel to the axis of the railing clamping hole (410).

10. The child doorway installation device for stairs according to claim 1, characterized in that: The gate mounting structure (110) includes a second nut (111), the base (100) is provided with a mounting groove (123), the second nut (111) is slidably disposed in the mounting groove (123), the hole wall of the mounting groove (123) is provided with a clearance notch (124) extending to the outer wall of the base (100), the clearance notch (124) is strip-shaped and extends along the length direction of the mounting groove (123); the base (100) is provided with a friction plate (150), the friction plate (150) is located on the hole wall of the railing clamping hole (410).

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