Crawling ladder for children

Abstract

The invention discloses a crawling ladder for children, and belongs to the technical field of children products. Comprising a supporting frame composed of a front supporting leg and a rear supporting leg, a first gear groove is formed in the front supporting leg in the axis direction of the front supporting leg, and a second gear groove is formed in the rear supporting leg in the axis direction of the rear supporting leg; a first connecting rod and a second connecting rod are arranged at the bottom of the standing plate, the two ends of the first connecting rod are connected to the first gear grooves in a movable or lockable mode, and the two ends of the second connecting rod are connected to the second gear grooves in a movable or lockable mode; a sliding guide block is arranged on the standing plate in the direction perpendicular to the second connecting rod, and the second connecting rod is in sliding connection with the sliding guide block. When the height of the standing plate is adjusted, the first connecting rod moves along the first gear groove, and the second connecting rod moves along the second gear groove and the sliding guide block at the same time. The height of the standing plate is adjustable and is always kept in a horizontal state, so that the crawling ladder for children is suitable for children of different ages and can be flexibly adjusted according to the heights of different facilities at home, and the product universality is enhanced.

Description

Technical Field

[0001] The invention belongs to the technical field of children's products, and particularly relates to a children's climbing ladder. Background Art

[0002] In daily family life, children often find it difficult to independently complete basic daily activities such as washing, going to the toilet, or taking and putting objects from high places due to height restrictions. In order to help children overcome the inconvenience caused by their height, children's ladders are widely used as an auxiliary tool. Existing children's ladders usually include a supporting structure and pedals or standing boards for children to stand on. The ladders can be raised by climbing, thereby assisting them in completing various operations in daily life.

[0003] However, children's ladders currently on the market generally have a significant flaw, that is, the height of the standing board is fixed and cannot be adjusted, resulting in many limitations in actual use:

[0004] 1. Poor applicability: Children of different ages have different heights, and the fixed height of the standing board cannot meet the diverse needs of children from toddlers to preschoolers, resulting in a short use cycle of the ladder;

[0005] 2. Insufficient safety: For shorter children, a standing board that is too high may make climbing difficult or even cause a fall risk; while for taller children, a standing board that is too low loses its auxiliary function;

[0006] 3. Lack of personalized adjustment function: Existing ladders cannot be flexibly adjusted according to specific usage scenarios (such as different heights of washbasins), which affects their practicality and convenience;

[0007] 4. High cost of repeated purchases: As children grow taller, parents often need to replace multiple ladders of different heights, which increases the financial burden and is not conducive to the rational use of resources. Summary of the Invention

[0008] The present invention aims to solve the above problems in the prior art and proposes a children's climbing ladder with an adjustable standing board height.

[0009] The present invention can be achieved through the following technical solutions:

[0010] A children's climbing ladder, comprising:

[0011] The support frame is composed of a front support leg and a rear support leg, wherein the front support leg and the rear support leg form an included angle, the front support leg is provided with a first gear slot along its axis, and the rear support leg is provided with a second gear slot along its axis;

[0012] A standing board, the bottom of which is provided with a first connecting rod and a second connecting rod, the two ends of the first connecting rod are movably or lockably connected to the first gear slot, and the two ends of the second connecting rod are movably or lockably connected to the second gear slot;

[0013] The standing board is provided with a sliding guide block in a direction perpendicular to the second connecting rod, and the second connecting rod is slidably connected to the sliding guide block;

[0014] When the height of the standing board is adjusted, the first connecting rod moves along the first gear slot, and the second connecting rod moves along the second gear slot and the sliding guide block at the same time.

[0015] As a further improvement of the present invention, first latches movable along their axes are provided at both ends of the first connecting rod, and a plurality of first gear holes are provided in the first gear slot, and the first latches can be inserted into or out of the first gear holes.

[0016] As a further improvement of the present invention, guide members are provided at both ends of the first connecting rod, the first connecting rod is rotatably connected to the guide members, the guide members and the first gear slot form a sliding rail matching structure, and the first pin is passed through the guide members.

[0017] As a further improvement of the present invention, second pins movable along their axes are provided at both ends of the second connecting rod, and a plurality of second gear holes are provided in the second gear slot, and the second pins can be inserted into or out of the second gear holes.

[0018] As a further improvement of the present invention, a pair of unlocking buttons are provided at the bottom of the standing board, and a single unlocking button is connected to two pull ropes, which are respectively connected to the first latch and the second latch located on the same side of the standing board.

[0019] As a further improvement of the present invention, a first connecting shell is installed on the front leg, and a second connecting shell is provided at the end of the rear leg. The second connecting shell is rotatably connected to the first connecting shell and a first joint lock is provided at the connection.

[0020] As a further improvement of the present invention, the first joint lock comprises:

[0021] an unlocking button, which is disposed in the inner cavity of the first connecting housing;

[0022] a locking block, which is disposed in the inner cavity of the second connecting shell;

[0023] A return spring is provided in the inner cavity of the second connecting shell and is used for providing an elastic force for the locking block to move toward the unlocking button.

[0024] As a further improvement of the present invention, a first receiving groove is provided in the inner cavity of the first connecting shell, and a second receiving groove is provided in the inner cavity of the second connecting shell. The shapes of the first receiving groove and the second receiving groove match the shape of the locking block, wherein:

[0025] When the locking block is inserted into the first receiving groove, the first connecting shell and the second connecting shell are locked;

[0026] After the unlocking button is pressed, the unlocking button pushes the locking block into the second receiving groove, and the first connecting shell and the second connecting shell can rotate relative to each other.

[0027] As a further improvement of the present invention, a telescopic tube is provided on the top surface of the front leg, and the telescopic tube is telescopically connected to the front leg. A protective fence is installed between the two telescopic rods.

[0028] As a further improvement of the present invention, a second joint lock is provided at the connection between the protective enclosure and the telescopic rod. When the second joint lock is in a locked state, the protective enclosure is in a fixed state. When the second joint lock is unlocked, the protective enclosure is in an unlocked state and can rotate around the second joint lock.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. Strong adaptability to meet the needs of children of different heights: By adjusting the height of the standing board, the ladder can adapt to the needs of children of different ages, and the height can be flexibly adjusted according to the home environment (such as the sink, dining table, etc.), improving the versatility and practicality of the product;

[0031] 2. The standing board always remains horizontal: By utilizing the sliding cooperation between the first connecting rod and the front leg, the second connecting rod and the rear leg, and the design of the sliding guide block, the standing board always remains horizontal during the adjustment process, enhancing the stability and safety of use;

[0032] 3. Easy operation, no tools are required for height adjustment. Users only need to pull the unlock button to disengage the connecting rod latch, and then manually adjust the height of the standing board. After releasing the button, the latch automatically resets and locks. The whole process is simple and fast, with rapid response.

[0033] 4. It has folding and storage function, saving space and facilitating transportation: the standing board can be flipped and folded, and the rear legs can be rotated around the joints for storage, which is not only convenient for daily storage in the family, but also helps manufacturers reduce the volume during transportation and improve space utilization.

[0034] 5. Safety protection design to enhance usage security: a telescopic tube and an adjustable protective enclosure are set, and they are locked and stored through a joint lock, which effectively prevents children from falling backwards and fully guarantees the safety of children during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic structural diagram of the children's climbing ladder of the present invention in an unfolded state;

[0036] Figure 2 The present invention Figure 1 The structural diagram at the bottom;

[0037] Figure 3 It is a schematic diagram of the connection between the pull rope and the first and second latches of the present invention;

[0038] Figure 4 is a side view of the children's climbing ladder of the present invention in the unfolded state;

[0039] Figure 5 The present invention Figure 4 Sectional view along AA;

[0040] Figure 6 The present invention Figure 5 A partial enlarged view of point B in the middle;

[0041] Figure 7 It is a structural schematic diagram of the first control button and the locking block of the present invention;

[0042] Figure 8 This is a schematic structural diagram of the children's ladder of the present invention in a folded state;

[0043] Figure 9 is a schematic diagram of the internal structure of the second joint lock of the present invention;

[0044] Figure 10 This is a schematic diagram of the internal structure of the second joint lock of the present invention from another perspective.

[0045] In the figure, 100, support frame; 110, front support leg; 111, first gear slot; 1111, first gear hole; 120, rear support leg; 121, second gear slot; 1211, second gear hole; 1212, opening; 1213, avoidance button; 130, first connecting shell; 131, first accommodating slot; 140, second connecting shell; 141, second accommodating slot; 150, first joint lock; 151, first control button; 152, locking block; 160, telescopic tube; 170, protective enclosure; 180, second joint lock; 181, fixed shell; 1811, gear plate; 1812, arc groove; 1812a, first locking slot; 1812b, second locking slot; 1812c, third locking slot; 182, rotating shell; 1821, second control button; 1822, gear pin;

[0046] 200, standing plate; 210, first connecting rod; 211, first latch; 212, guide member; 220, second connecting rod; 221, second latch; 230, sliding guide block; 240, unlocking button; 241, pull rope; 250, lead frame. DETAILED DESCRIPTION

[0047] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical method of the present invention, but the present invention is not limited to these embodiments.

[0048] like Figures 1-10 As shown, the present invention provides a children's climbing ladder, comprising:

[0049] The support frame 100 is composed of a front support leg 110 and a rear support leg 120. An angle is formed between the front support leg 110 and the rear support leg 120. The front support leg 110 has a first gear slot 111 along its axis, and the rear support leg 120 has a second gear slot 121 along its axis.

[0050] The standing board 200 has a first connecting rod 210 and a second connecting rod 220 at its bottom. The first connecting rod 210 is movably or lockably disposed in the first gear slot 111, and the second connecting rod 220 is movably or lockably disposed in the second gear slot 121.

[0051] The standing board 200 is provided with a sliding guide block 230 in a direction perpendicular to the second connecting rod 220 , and the second connecting rod 220 is slidably connected to the sliding guide block 230 .

[0052] It should be noted that since there is an angle between the front support leg 110 and the rear support leg 120 and they are not arranged in parallel, it is necessary to set the above-mentioned sliding guide block 230 at the bottom of the standing board 200 so that when the height of the standing board 200 is adjusted, the second connecting rod 220 can adaptively adjust its position at the bottom of the standing board 200 to ensure that the standing board 200 is always in a horizontal position.

[0053] Specifically, when adjusting the height of the standing board 200, the first connecting rod 210 moves along the first gear slot 111 to change its connection position on the front leg 110, and the second connecting rod 220 moves along the second gear slot 121 to change its connection position on the rear leg 120, and the second connecting rod 220 synchronously moves along the sliding guide block 230 to change its connection position on the standing board 200.

[0054] The children's ladder provided in this embodiment has at least the following advantages compared to the children's ladders in the prior art:

[0055] 1. Adapt to the needs of children of different heights: By adjusting the height of the standing board 200, the ladder can be used by children of different heights. It is universal and can also be flexibly adjusted according to the actual usage scenario (such as sink, dining table, etc.), enhancing the adaptability of the product to different family environments.

[0056] 2. The standing board 200 always maintains a horizontal position: the first connecting rod 210 slides with the gear slots on the front legs 110 and the rear legs 120, and the second connecting rod 220 slides with the standing board 200, so that the standing board 200 always maintains a horizontal position at different heights, improving the stability and safety of use;

[0057] 3. Extend service life and reduce use costs: A ladder can meet the needs of children at multiple growth stages, avoiding frequent equipment replacement due to height changes, and significantly improving product cost-effectiveness and resource utilization.

[0058] Furthermore, the following is a description of the specific connection structure between the standing board 200 and the front legs 110 and the rear legs 120:

[0059] Preferably, both ends of the first connecting rod 210 are provided with first pins 211 that can move along its axis, and a plurality of first gear holes 2111 are provided in the first gear slot 111. The first pins 211 can be inserted into or disengaged from the first gear holes 2111 to achieve position adjustment and locking of the first connecting rod 210, thereby achieving position adjustment and locking between the standing board 200 and the front support leg 110.

[0060] Furthermore, guide members 212 are provided at both ends of the first connecting rod 210 . The guide members 212 and the first gear slot 111 form a slide rail matching structure. The first latch 211 passes through the guide members 212 and is connected to a first gear hole 2111 .

[0061] Similarly, both ends of the second connecting rod 220 are provided with second pins 221 that can move along the axis thereof. The second pins 221 can be inserted into or out of the second gear hole 1211 to achieve position adjustment and locking between the second connecting rod 220 and the rear support leg 120 .

[0062] Preferably, a pair of unlocking buttons 240 are provided at the bottom of the standing board 200. The single first control button 240 is connected to two pull ropes 241. The two pull ropes 241 are respectively connected to the first latch 211 and the second latch 221 located on the same side of the standing board 200.

[0063] Therefore, by simply pulling the left and right unlocking buttons 240 synchronously, all the first latches 221 and the second latches 221 can be pulled inward through the pull rope 241 to disengage them from the first gear hole 2111 and the second gear hole 1211. At this time, the standing board 200 is in a freely adjustable state, and its front and rear side edges can be adjusted up and down along the first gear slot 111 and the second gear slot 121 respectively to achieve height adjustment of the standing board 200.

[0064] Among them, the inner ends of the first latch 211 and the second latch 221 are connected to return springs (not shown in the figure). Once the tension applied to the unlocking button 240 is released, the first latch 211 and the second latch 221 will be reset under the push of their respective return springs and inserted into the corresponding first gear hole 1111 and second gear hole 1211 to achieve the purpose of automatic locking.

[0065] At the same time, the setting of the return spring also ensures the stability and firmness after locking between the first connecting rod 210 and the front support leg 110, and between the second connecting rod 220 and the rear support leg 120, thereby ensuring that the standing board 200 is firm enough for children to stand on, thereby improving the safety of children when standing.

[0066] In addition, a lead frame 250 is provided at the bottom of the standing board 200. The lead frame 250 is connected to the unlock button 240 and the first connecting rod 210. The pull rope 241 is led out from the unlock button 240, passed along the lead frame 250, and then passed into the first connecting rod 210 and connected to the first latch 211.

[0067] At the same time, a first through hole is provided on the side of the lead frame 250 facing the second connecting rod 220, and a second through hole is provided on the corresponding side wall of the second connecting rod 220. The pull rope 241 passes through the first through hole and the second through hole in sequence and is connected to the second pins 221 at both ends of the second connecting rod 220.

[0068] Based on the connection structure between the standing board 200 and the front legs 110 and the rear legs 120, the specific operation process of adjusting the height of the standing board 200 is described as follows:

[0069] 1. The user pulls the unlock button 240, causing the first latches 211 at both ends of the first connecting rod 210 to disengage from the first gear hole 1111, and simultaneously the second latches 221 at both ends of the second connecting rod 220 to disengage from the second gear hole 1211. At this point, the front and rear sides of the standing board 200, which are used to connect to the front legs 110 and the rear legs 120, are both in a movable state;

[0070] Second, the user maintains tension on the unlock button 240 and pulls up or presses down the standing board 200 to adjust the height of the standing board 200. During this process, as the second connecting rod 220 moves along the inclined second gear slot 121, the second connecting rod 220 encounters horizontal resistance, causing it to move forward and backward along the sliding guide block 230, ensuring that the standing board 200 can always remain horizontal during the adjustment process.

[0071] 3. When the standing board 200 is adjusted to the desired height, the tension on the unlocking button 240 is released, and the first latch 211 and the second latch 221 are pushed into the first gear hole 1111 and the second gear hole 1211 under the action of the return spring, thereby completing the automatic locking of the standing board 200.

[0072] The entire adjustment process does not require tools and is easy to operate with quick response. During the adjustment process, the various connecting structures cooperate with each other to ensure the stability of the motion trajectory and the horizontality of the posture, thereby improving the safety and comfort of use.

[0073] Furthermore, the following is a detailed description of how to store the children's ladder:

[0074] About the storage of the standing board 200:

[0075] Preferably, the first connecting rod 210 is rotatably connected to the guide member 212. When the standing board 200 is stored, the first connecting rod 210 and the second connecting rod 220 are converted to an active state by simply turning the unlocking button 240. At this time, the standing board 200 can be flipped over and stored.

[0076] In addition, the rear leg 120 has an opening 1212 on the side of the second gear slot 121. After the second latch 221 of the second connecting rod 220 is disengaged from the second gear hole 1211, it can be moved out of the second gear slot 121 through the opening 1212, so that the standing board 200 can be freely turned over for folding.

[0077] Furthermore, an avoidance button 1213 is provided at the opening 1212. When no external force is applied, the avoidance button 1213 blocks the position of the opening 1212, ensuring that the second latch 221 can only move within the second gear slot 121. After pressing the avoidance button 1213, the second latch 221 can be moved out of the second gear slot 121 from the opening 1212, so that the rear side of the standing board 200 is completely converted to a free state, and the standing board 200 can be flipped over and stored.

[0078] That is to say, the standing board 200 has two storage modes in this embodiment:

[0079] 1. During the process of flipping and storing the standing board 200, the front side thereof gradually moves upward along the front legs 110, while the rear side thereof gradually moves downward along the rear legs 120, thereby achieving folding and storing the standing board 200.

[0080] 2. After the second connecting rod 220 is disengaged from the second gear slot 121, the rear side of the standing board 200 is converted into a fully free mode, so that the standing board 200 can be flipped and stored.

[0081] The two storage methods of the standing board 200 are used in different scenarios:

[0082] The first storage method is suitable for users to use when storing at home. After storage, the standing board 200 still has a certain angle with the vertical surface;

[0083] The second storage method is suitable for manufacturers to store during transportation. At this time, since the rear side of the standing board 200 is converted to a fully free mode, the standing board 200 can be flipped to be parallel to the vertical surface, thereby minimizing the volume and improving space utilization during transportation.

[0084] About the storage of rear legs 120:

[0085] Preferably, a first connecting shell 130 is installed on the front support leg 110, and a second connecting shell 140 is provided at the end of the rear support leg 120. The second connecting shell 140 is rotatably connected to the first connecting shell 130 and a first joint lock 150 is provided at the connection. That is to say, the rear support leg 120 and the front support leg 110 are locked and unlocked by the first joint lock 150. After unlocking, the rear support leg 120 can be rotated around the first joint lock 150 to achieve the storage of the rear support leg 120.

[0086] Specifically, the first joint lock 150 includes:

[0087] A first control button 151, which is disposed in the inner cavity of the first connection housing 130;

[0088] a locking block 152 disposed in the inner cavity of the second connecting housing 140;

[0089] A spring (not shown) is disposed in the inner cavity of the second connecting housing 140 and is used to provide elastic force for the locking block 152 to move toward the first control button 151 .

[0090] Furthermore, a first receiving groove 131 is provided in the inner cavity of the first connecting shell 130, and a second receiving groove 141 is provided in the inner cavity of the second connecting shell 140. The shapes of the first receiving groove 131 and the second receiving groove 141 match the shape of the locking block 152. For example, in this embodiment, the locking block 152 is configured as a gear-shaped structure (or other engaging structure), and the corresponding first receiving groove 131 and the second receiving groove 141 are also configured as gear-shaped structures, wherein,

[0091] When the first joint lock 150 is in the locked state, the locking block 152 is pushed toward the side of the first connecting shell 130 by the action of the spring and is locked into the first receiving groove 131. At this time, the two connecting shells (the connecting parts of the front leg 110 and the rear leg 120) are relatively fixed and cannot rotate, thereby ensuring the stability and safety of the ladder structure during use;

[0092] When the angle needs to be adjusted or the ladder needs to be folded, the user presses the first control button 151 to push the locking block 152 to overcome the spring force, causing it to disengage from the first receiving groove 131 and slide into the second receiving groove 141 in the second connecting shell 140. At this time, the locking block 152 no longer restricts the relative movement between the two connecting shells. The first connecting shell 130 and the second connecting shell 140 can rotate freely to achieve the angle adjustment of the second connecting shell 140, thereby driving the rear support legs 120 to rotate synchronously to achieve its storage purpose.

[0093] It is worth mentioning that the first joint lock 150 ensures a stable structure in the locked state through the matching design of the locking block 152 with the first accommodating groove 131 and the second accommodating groove 141, and can rotate flexibly when unlocked, meeting the dual needs of use and storage.

[0094] Moreover, this button-type unlocking method is simple and intuitive, allowing users to operate quickly. At the same time, the overall structure is integrated inside the shell, which is beautiful and does not take up space.

[0095] In addition, in order to ensure the safety of children after standing on the standing board 200, a telescopic tube 160 is provided on the top surface of the front support leg 110. The telescopic tube 160 is telescopically connected to the front support leg 110. A protective enclosure 170 is installed between the two telescopic tubes 160. The protective enclosure 170 can provide support and protection for the child's back or the back of the body to prevent them from falling backwards, thereby improving the overall safety factor of use.

[0096] Among them, a second joint lock 180 is provided at the connection between the protective enclosure 170 and the telescopic tube 160. When the second joint lock 180 is in a locked state, the protective enclosure 170 is in a fixed state. When the second joint lock 180 is unlocked, the protective enclosure 170 is in an unlocked state and can be rotated around the second joint lock 180 to achieve position adjustment and storage of the protective enclosure 170.

[0097] Preferably, the second joint lock 180 includes a fixed shell 181 and a rotating shell 182 connected to each other, the fixed shell 181 is connected to the telescopic tube 160, and the rotating shell 182 is connected to the protective fence 170. When the protective fence 170 rotates, it drives the rotating shell 182 to rotate.

[0098] Among them, a shift plate 1811 is provided in the fixed shell 181, and an arc-shaped slot 1812 is opened on the shift plate. A concave first locking slot 1812a is provided in the middle of the arc-shaped slot 1812, and the two ends of the arc-shaped slot 1812 are respectively a second locking slot 1812b and a third locking slot 1812c.

[0099] Correspondingly, the rotating shell 182 is provided with a second control button 1821 that can move up and down, and the side of the second control button 1821 is provided with a gear pin 1822. The gear pin 1822 can be movably inserted into the arc-shaped slot 1812, and an elastic member (such as a spring) is provided to provide the second control button 1821 with a downward elastic force to ensure the stability of the gear pin 1822 in each locking groove.

[0100] Specifically, when the shift pin 1822 is located in the first locking groove 1812a, the protective enclosure 170 is in a protective state. At this time, the protective enclosure 170 is located on a horizontal plane and can provide protection for children.

[0101] By pushing the second control button 1821 upward to disengage it from the first locking slot 1812a, the protective enclosure 170 can be rotated upward or downward until the shift pin 1822 enters the second locking slot 1812b or the third locking slot 1812c, and the protective enclosure 170 is locked.

[0102] It is worth mentioning here that no matter whether the shift pin 1822 moves from the second locking groove 1812b to the first locking groove 1812a or from the third locking groove 1812c to the first locking groove 1812a, the shift pin 1822 moves in the forward gear, and there is no need to push the second control button 1821 upward. That is, after the child enters the standing board 200, the protective enclosure 170 can be directly rotated until it is automatically locked when it is rotated to the protective position. The operation is simple and convenient, and the child can complete it independently.

[0103] The technical means disclosed in the solutions of the present invention are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of any combination of the above technical features. The above is a specific embodiment of the present invention. It should be noted that for those skilled in the art, without departing from the principles of the present invention, various improvements and modifications can be made, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

[0104] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0105] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly defined. The terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0106] The technical solutions between the various embodiments of the present invention can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0107] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A children's ladder, characterized in that: include: The support frame is composed of a front support leg and a rear support leg, wherein the front support leg and the rear support leg form an included angle, the front support leg is provided with a first gear slot along its axis, and the rear support leg is provided with a second gear slot along its axis; A standing board, the bottom of which is provided with a first connecting rod and a second connecting rod, the two ends of the first connecting rod are movably or lockably connected to the first gear slot, and the two ends of the second connecting rod are movably or lockably connected to the second gear slot; The standing board is provided with a sliding guide block in a direction perpendicular to the second connecting rod, and the second connecting rod is slidably connected to the sliding guide block; When the height of the standing board is adjusted, the first connecting rod moves along the first gear slot, and the second connecting rod moves along the second gear slot and the sliding guide block at the same time.

2. A children's climbing ladder according to claim 1, characterized in that: Both ends of the first connecting rod are provided with first latches that can move along the axis thereof, and a plurality of first gear holes are provided in the first gear slot, and the first latches can be inserted into or out of the first gear holes.

3. A children's climbing ladder according to claim 2, characterized in that: Guide members are provided at both ends of the first connecting rod. The first connecting rod is rotatably connected to the guide members. The guide members and the first gear slot form a slide rail matching structure. The first latch is passed through the guide members.

4. A children's ladder according to claim 2, characterized in that: The second connecting rod is provided with second latches movable along its axis at both ends, and the second gear slot is provided with a plurality of second gear holes, and the second latches can be inserted into or out of the second gear holes.

5. A children's climbing ladder according to claim 4, characterized in that: A pair of unlocking buttons are provided at the bottom of the standing board. A single unlocking button is connected to two pull ropes, and the two pull ropes are respectively connected to the first latch and the second latch located on the same side of the standing board.

6. A children's ladder according to claim 1, characterized in that: A first connecting shell is installed on the front supporting leg, and a second connecting shell is provided at the end of the rear supporting leg. The second connecting shell is rotatably connected to the first connecting shell, and a first joint lock is provided at the connection.

7. A children's climbing ladder according to claim 6, characterized in that: The first joint lock comprises: an unlocking button, which is disposed in the inner cavity of the first connecting housing; a locking block, which is disposed in the inner cavity of the second connecting shell; A return spring is provided in the inner cavity of the second connecting shell and is used for providing an elastic force for the locking block to move toward the unlocking button.

8. A children's ladder according to claim 7, characterized in that: A first receiving groove is provided in the inner cavity of the first connecting shell, and a second receiving groove is provided in the inner cavity of the second connecting shell. The shapes of the first receiving groove and the second receiving groove match the shape of the locking block, wherein: When the locking block is inserted into the first receiving groove, the first connecting shell and the second connecting shell are locked; After the unlocking button is pressed, the unlocking button pushes the locking block into the second receiving groove, and the first connecting shell and the second connecting shell can rotate relative to each other.

9. The children's ladder according to claim 6, characterized in that: A telescopic tube is provided on the top surface of the front supporting leg, and the telescopic tube is telescopically connected to the front supporting leg. A protective fence is installed between the two telescopic rods.

10. A children's climbing ladder according to claim 9, characterized in that: A second joint lock is provided at the connection between the protective enclosure and the telescopic rod. When the second joint lock is in a locked state, the protective enclosure is in a fixed state. When the second joint lock is unlocked, the protective enclosure is in an unlocked state and can rotate around the second joint lock.

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