Supporting leg structure and platform ladder adopting same

Abstract

The utility model relates to a supporting leg structure which comprises a connecting piece and a supporting leg pipe, the connecting piece is provided with a connecting cavity, one end of the supporting leg pipe extends into the connecting cavity to be connected with the connecting piece, and the supporting leg pipe rotates with the connecting position as the rotating center. The connecting piece is provided with an opening limiting hole and a folding limiting hole, and the supporting leg pipe is provided with a lock pin with the length adjusted elastically. The supporting leg pipe rotates and is completely unfolded, the lock pin is aligned with the opening limiting hole, the lock pin is elastically pushed to stretch out and be inserted into the opening limiting hole, and the lock pin locks the state of the supporting leg pipe; the supporting leg pipe rotates and is completely folded, the lock pin is aligned with the folding limiting hole, the lock pin is elastically pushed to stretch out and be inserted into the folding limiting hole, and the lock pin fixes the state of the supporting leg pipe. Compared with the prior art, the ladder has remarkable advantages in the aspects of size, cost, operation convenience, stability and the like, the adaptability and durability of the product are enhanced through design elements such as elastic adjustment, and comprehensive improvement is provided for use of the ladder product.

Description

Technical Field

[0001] The utility model relates to a supporting foot structure and a platform ladder adopting the structure. Background Art

[0002] In order to achieve stability, some ladder products often need to add supporting leg structures. Common supporting leg structures on the market are fixed, detachable and telescopic, and each of these methods has its own disadvantages.

[0003] Fixed support legs: Fixed support legs have a large folded volume and high packaging and transportation costs.

[0004] Detachable support feet: Detachable support feet need to be installed before use, which is cumbersome, and installation auxiliary tools or spare parts are easy to cause loss.

[0005] Telescopic support legs: Although the telescopic support legs have a certain reduction in volume when folded, they have poor stability, complex structure and high cost. Utility Model Content

[0006] The first purpose of the utility model is to provide a support leg structure with good stability, small folded volume, easy use and low cost.

[0007] The second object of the utility model is to provide a platform ladder with good stability, small folded volume, easy use and low cost.

[0008] The first purpose of the utility model is achieved in this way:

[0009] A support leg structure, comprising a connecting piece and a support leg tube, wherein the connecting piece is provided with a connecting cavity, one end of the support leg tube extends into the connecting cavity and is connected to the connecting piece, and the support leg tube rotates with the connecting part as the rotation center;

[0010] The connecting piece is provided with an opening limit hole and a folding limit hole, and the supporting leg tube is provided with a locking pin whose length is adjusted by elasticity;

[0011] The supporting leg is rotated and fully extended, the locking pin is aligned with the opening limit hole, the elastic force pushes the locking pin to extend and insert into the opening limit hole, and the locking pin locks the state of the supporting leg;

[0012] The supporting leg tube is rotated and completely folded, the locking pin is aligned with the folding limit hole, and the elastic force pushes the locking pin to extend and insert into the folding limit hole, and the locking pin fixes the state of the supporting leg tube.

[0013] Volume optimization and transportation cost reduction: Through the rotation and folding of the support leg tubes, the design can be fully unfolded when in use to provide stability, and can be compactly folded when not in use. This effectively reduces the volume of the support leg, thereby reducing packaging and transportation costs, making it more cost-effective.

[0014] Easy operation and quick installation: Compared with detachable support legs, this design does not require installation tools or spare parts. Users only need to rotate the support leg tube, and through the clever design of the locking pin and the limit hole, the support leg can be quickly and easily unfolded and locked. This reduces the preparation time before use and improves the convenience of operation.

[0015] Anti-loss design and stability: By using a locking pin with elastically adjustable length, users do not need to worry about losing the locking pin when unfolding or folding the support legs. The design of the locking pin also ensures that the support leg tube can be firmly locked when opened or folded, providing good stability and reliability.

[0016] Elastic adjustment enhances durability: The locking pin of the support leg is designed with an elastically adjustable length. This elastic adjustment mechanism improves the durability of the locking pin. During use, the locking pin can better adapt to different environments and working conditions, extending the service life of the support leg.

[0017] Overall, this innovative design not only achieves significant advantages in terms of size, cost, ease of operation and stability, but also enhances the adaptability and durability of the product through design elements such as elastic adjustment, providing a comprehensive improvement in the use of ladder products.

[0018] The first purpose of the utility model can also be solved by the following technical measures:

[0019] Furthermore, a foot cover is provided on the bottom surface of the supporting leg tube.

[0020] Ground protection and anti-slip: The foot cover can serve as the bottom cover of the support leg tube, effectively protecting the ground surface from scratches and damage. At the same time, the foot cover is usually made of anti-slip material, which can provide additional ground friction to prevent the support leg from sliding or slipping during use, thereby further enhancing the stability and safety of the ladder product.

[0021] Reduce noise and vibration: The foot cover acts as a buffer between the support foot and the ground, which can effectively reduce the vibration and noise caused during use. This is especially important when working or using in a quiet environment, and helps provide a more comfortable use experience.

[0022] Adapt to different terrains: The setting of the foot cover makes the support leg tube more adaptable to different types of terrains, such as hard floors, floor tiles, grass, etc. The design of the foot cover can ensure that the support foot provides stable support on various surfaces, increasing the applicability of the product in different environments.

[0023] Prevent ground scratches: As a bottom cover, the foot cover can also prevent the sharp edges of the support foot tube from directly contacting the ground, reducing scratches and wear on the ground. This not only protects the beauty of the ground surface, but also extends the service life of the support foot and the entire ladder product.

[0024] Easy to replace and maintain: The foot cover can usually be replaced relatively easily. In this way, if the user finds that the foot cover is worn or damaged during use, it can be easily replaced, which extends the service life of the entire support foot structure and reduces maintenance costs and troubles.

[0025] In general, the design of the foot cover at the bottom not only improves the stability and safety of the supporting feet, but also takes into account the protection and adaptability to the ground, providing users with a more comprehensive and reliable use experience.

[0026] Furthermore, the connecting piece is provided with a plug-in cavity for connecting the leg tube.

[0027] Precise docking and secure connection: The docking cavity provides a precise docking position for the connecting leg, ensuring that the leg can be correctly and securely inserted into the connector. This helps to improve the stability of the support leg structure and prevent shaking or instability during use.

[0028] Simplified installation process: The design of the plug-in cavity simplifies the installation process of the leg tube. The user only needs to insert the leg tube into the plug-in cavity of the connector to complete the assembly of the support foot. Compared with some designs that require threaded connections or other complex installation methods, this plug-in cavity design makes the entire assembly process more convenient and efficient.

[0029] Prevent bad assembly and misoperation: The presence of the plug cavity prevents bad docking or misoperation during the installation of the leg tube, and improves the accuracy of assembly. This reduces the possibility of user errors during installation and reduces safety hazards caused by assembly problems.

[0030] Easy to maintain and replace: Since the leg tube and the connector are connected through the plug-in cavity, users can operate more easily when they need to maintain or replace the leg tube. This design improves the maintainability of the entire support leg structure and reduces the maintenance cost when parts need to be replaced due to damage or wear.

[0031] Improved modularity of the product: The presence of the plug-in cavity makes the support foot structure more modular. This means that different components (such as the foot tube) can be more easily replaced or upgraded without changing the overall structure. This improves the flexibility and customizability of the product, allowing users to adjust it according to specific needs.

[0032] Overall, the design of the plug-in cavity makes the support foot structure more stable, easier to use and easier to maintain, improving the overall product performance and user experience.

[0033] The second purpose of the utility model is achieved in this way:

[0034] A platform ladder with a supporting foot structure, comprising a platform and a foot tube assembly, wherein the foot tube assembly comprises a left foot tube, a right foot tube and a step rod, wherein the left foot tube and the right foot tube are opposite to each other, the step rod is arranged between the left foot tube and the right foot tube, one end of the step rod is connected to the left foot tube, and the other end of the step rod is connected to the right foot tube;

[0035] The leg tube assemblies are hingedly connected to the left side and the right side of the platform respectively;

[0036] The lower end of the left leg tube is inserted into the insertion cavity of the corresponding connecting piece and locked, so that the lower end of the left leg tube is connected to the supporting leg structure;

[0037] The lower end of the right leg tube is inserted into the insertion cavity of the corresponding connecting piece and locked, so that the lower end of the right leg tube is connected to another supporting leg structure.

[0038] Enhanced stability and support: The combination of the left foot tube, the right foot tube and the step rod forms a relatively stable support foot assembly. This layout not only improves the stability of the overall structure, but also enhances the support force of the support foot on the platform, making the platform more solid and safe during use.

[0039] Evenly distribute the load: The rungs, as the middle part connecting the left and right leg tubes, help to evenly distribute the load, reduce the pressure on the single connection point, and improve the bearing capacity of the entire support leg structure. This is especially important for platform ladders when they are subjected to large loads.

[0040] Easy to fold and carry: The design of the left and right leg tubes facing each other and the connection method of the step rods make the support leg structure relatively easy to fold. This makes it convenient to carry and store the platform ladder, especially when the platform ladder needs to be moved or stored, improving its portability.

[0041] Flexibility and adaptability: Since the left and right foot tubes can be relatively independently hinged on both sides of the platform, this design increases the flexibility and adaptability of the platform ladder in different work scenarios. The ladder can better adapt to different work spaces and terrain conditions.

[0042] Easy assembly and disassembly: The design of the plug-in cavity allows the left and right leg tubes to be easily inserted into the corresponding connectors and firmly connected through the locking mechanism. This simplifies the assembly and disassembly process of the support legs and improves the ease of use of the platform ladder.

[0043] Overall, the design of this supporting leg structure effectively improves the stability, adaptability and portability of the platform ladder, providing users with a safer and more flexible usage experience.

[0044] The beneficial effects of the utility model are as follows:

[0045] The utility model effectively reduces the volume and reduces the packaging and transportation costs through the rotation and folding of the supporting leg tubes, making it more economical and efficient, and the user's operation becomes easier without the need for additional tools or spare parts. Through the ingenious design of the locking pin and the limiting hole, the supporting legs can be quickly deployed and locked, which significantly improves the convenience of use. The anti-loss design adopts a locking pin whose length can be elastically adjusted to ensure stability in the deployed or folded state, while reducing the risk of losing the locking pin. The elastic adjustment mechanism improves the durability of the locking pin, better adapts to different environments and working conditions, and extends the service life of the supporting legs. This comprehensive design provides a significant improvement in the volume, cost, convenience, stability and durability of ladder products, and fully meets the needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic diagram of a platform ladder (expanded state).

[0047] Figure 2 This is a partial enlarged view of the platform ladder (expanded state).

[0048] Figure 3 Schematic diagram of the support leg structure.

[0049] Figure 4 Schematic diagram of the connecting parts of the supporting foot structure.

[0050] Figure 5 A schematic diagram of a supporting leg tube of a supporting leg structure.

[0051] Figure 6 This is a partial enlarged view of the platform ladder (folded state).

[0052] Figure 7 Schematic diagram of the platform ladder (folded state). DETAILED DESCRIPTION

[0053] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0054] Example, combined with Figures 1 to 7 As shown, a support leg structure includes a connecting member 1 and a supporting leg tube 2, wherein the connecting member 1 is provided with a connecting cavity 11, one end of the supporting leg tube 2 extends into the connecting cavity 11 and is connected to the connecting member 1, and the supporting leg tube 2 rotates with the connection as the rotation center;

[0055] The connecting member 1 is provided with an opening limit hole 3 and a folding limit hole 4, and the supporting leg tube 2 is provided with a locking pin 5 whose length is adjusted by elasticity;

[0056] The supporting leg tube 2 is rotated and fully unfolded, the locking pin 5 is aligned with the opening limit hole 3, and the elastic force pushes the locking pin 5 to extend and insert into the opening limit hole 3, and the locking pin 5 locks the state of the supporting leg tube 2;

[0057] The supporting leg tube 2 is rotated and completely folded, the locking pin 5 is aligned with the folding limit hole 4, and the elastic force pushes the locking pin 5 to extend and insert into the folding limit hole 4, and the locking pin 5 fixes the state of the supporting leg tube 2.

[0058] Furthermore, a foot cover 6 is provided on the bottom surface of the supporting foot tube 2 .

[0059] Furthermore, the connector 1 is provided with a plug-in cavity 12 for connecting the leg tube.

[0060] A platform ladder supporting a foot structure, comprising a platform 7 and a foot tube assembly 8, wherein the foot tube assembly 8 comprises a left foot tube 81, a right foot tube 82 and a step rod 83, wherein the left foot tube 81 and the right foot tube 82 are opposite to each other, and the step rod 83 is arranged between the left foot tube 81 and the right foot tube 82, wherein one end of the step rod 83 is connected to the left foot tube 81, and the other end of the step rod 83 is connected to the right foot tube 82;

[0061] The leg tube assembly 8 is hingedly connected to the left side of the platform 7 and the right side of the platform 7 respectively;

[0062] The lower end of the left leg tube 81 is inserted into the insertion cavity 12 of the corresponding connecting member 1 and locked, so that the lower end of the left leg tube 81 is connected to the supporting leg structure;

[0063] The lower end of the right leg tube 82 is inserted into the insertion cavity 12 of the corresponding connecting member 1 and locked, so that the lower end of the right leg tube 82 is connected to another supporting leg structure.

[0064] Working principle:

[0065] Expand platform 7 ladder:

[0066] The user unfolds the leg tube assemblies 8 on the left side and the right side of the platform 7 respectively, and then presses the locking pin 5, and the elastic force pushes the locking pin 5 to retract and leave the folding limit hole 4, and then rotates the supporting leg tube 2. When the supporting leg tube 2 is fully unfolded, the locking pin 5 is aligned with the opening limit hole 3, and the elastic force pushes the locking pin 5 to extend and insert into the opening limit hole 3, and the locking pin 5 locks the state of the supporting leg tube 2.

[0067] Folding platform 7 ladder:

[0068] The user presses the locking pin 5, and the elastic force pushes the locking pin 5 to retract and leave the opening limit hole 3, and then rotates the supporting leg tube 2. When the supporting leg tube 2 is fully folded, the locking pin 5 is aligned with the folding limit hole 4, and the elastic force pushes the locking pin 5 to extend and insert into the folding limit hole 4. The locking pin 5 locks the state of the supporting leg tube 2, and then the user folds the leg tube assemblies 8 on the left side and the right side of the platform 7 respectively.

Claims

1. A support leg structure, comprising a connecting piece and a support leg tube, characterized in that: The connecting piece is provided with a connecting cavity, one end of the supporting leg tube extends into the connecting cavity and is connected to the connecting piece, and the supporting leg tube rotates with the connecting part as the rotation center; The connecting piece is provided with an opening limit hole and a folding limit hole, and the supporting leg tube is provided with a locking pin whose length is adjusted by elasticity; The supporting leg is rotated and fully extended, the locking pin is aligned with the opening limit hole, the elastic force pushes the locking pin to extend and insert into the opening limit hole, and the locking pin locks the state of the supporting leg; The supporting leg tube is rotated and completely folded, the locking pin is aligned with the folding limit hole, and the elastic force pushes the locking pin to extend and insert into the folding limit hole, and the locking pin fixes the state of the supporting leg tube.

2. The support leg structure according to claim 1, characterized in that: The bottom surface of the supporting leg tube is provided with a leg cover.

3. The support leg structure according to claim 1, characterized in that: The connecting piece is provided with a plug-in cavity for connecting the leg tube.

4. A platform ladder using the support foot structure as claimed in any one of claims 1 to 3, comprising a platform and a foot tube assembly, wherein the foot tube assembly comprises a left foot tube, a right foot tube and a rung, wherein the left foot tube and the right foot tube are opposite to each other, the rung is arranged between the left foot tube and the right foot tube, one end of the rung is connected to the left foot tube, and the other end of the rung is connected to the right foot tube; The leg tube assemblies are hingedly connected to the left side and the right side of the platform respectively; The lower end of the left leg tube is inserted into the insertion cavity of the corresponding connecting piece and locked, so that the lower end of the left leg tube is connected to the supporting leg structure; The lower end of the right leg tube is inserted into the insertion cavity of the corresponding connecting piece and locked, so that the lower end of the right leg tube is connected to another supporting leg structure.

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