A foldable pedal structure

Abstract

The utility model discloses a kind of foldable pedal structures, belong to climbing ladder technical field, including ladder section, pedal and connecting shaft.Ladder section main body is hollow, front face is equipped with movable slot, rear face is equipped with fixed slot, both sides have shaft hole;Pedal main part is fan-shaped, and shaft sleeve is equipped in center of circle, and arc two ends are respectively fixedly connected with bearing surface and fixed surface;Connecting shaft passes through shaft hole and shaft sleeve.When pedal is unfolded, bearing surface is perpendicular to ladder section, and fixed surface abuts against fixed slot top;When it is contracted, bearing surface is parallel to ladder section, and fixed surface is located movable slot bottom.The structure considers high-strength bearing and convenient folding function, load transmission is stable when unfolding, small in size after contraction, convenient for transportation and storage, suitable for ladder product with strength and storage size requirement.

Description

Technical Field

[0001] This utility model belongs to the field of ladder technology, and in particular relates to a foldable step structure. Background Technology

[0002] In the field of climbing ladders, the tread structure is the core component for realizing the climbing function. Existing tread structures are mainly divided into two types: fixed and folding.

[0003] Fixed treads and ladder sections are integrated or fixedly connected. Their advantages are high load-bearing capacity, small structural deformation, and the ability to withstand large loads, making them suitable for scenarios with extremely high strength requirements. However, this structure cannot be folded, occupies a lot of space, and is inconvenient for transportation and storage.

[0004] Folding treads are connected to the ladder section via hinges. While they offer the advantages of easy folding and small storage volume, they have weak load-bearing capacity and significant structural deformation. They are only suitable for scenarios with strict requirements on storage size and small load.

[0005] Currently, there is a lack of pedal structures on the market that can withstand large loads, control small deformations, and fold flexibly to reduce storage volume. Therefore, designing a pedal structure that balances high load-bearing capacity with convenient folding functionality has become a pressing technical problem to be solved in this field. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model proposes a foldable pedal structure.

[0007] To achieve the above objectives, this utility model provides a foldable pedal structure, comprising:

[0008] A stair section includes a stair section body, the stair section body is hollow inside, the stair section body has a movable groove at the front, a fixed groove at the back, and shaft holes on both sides respectively;

[0009] A pedal includes a pedal body and a bushing; the pedal body is fan-shaped, and the bushing is located at the center point of the fan-shaped arc of the pedal body; a bearing surface and a fixing surface are respectively fixed at the two ends of the fan-shaped arc of the pedal body.

[0010] A connecting shaft, which passes through the shaft hole and the bushing;

[0011] When the pedal is extended, the bearing surface is perpendicular to the main body of the ladder section, and the fixing surface abuts against the top of the fixing groove; when the pedal is retracted, the bearing surface is parallel to the main body of the ladder section, and the fixing surface is located at the bottom of the movable groove.

[0012] Optionally, an anti-rotation groove is provided on the outer side of the shaft hole, and shaft caps are detachably connected to both ends of the connecting shaft. The shaft caps match the anti-rotation groove and are snapped into the anti-rotation groove.

[0013] Optionally, a latch is also included for locking the pedal position when the pedal is in the retracted state.

[0014] Optionally, the latch includes a lock body, the lock body having a lock groove, the width of the lock groove being greater than the width of the fixed surface; the lock body, in the retracted state of the pedal, is engaged with the fixed surface through the lock groove.

[0015] Optionally, the latch further includes a connector and a connecting rope, the connector being fixed to the side of the ladder section body, and the connecting rope connecting the connector and the lock body.

[0016] Optionally, the pedal body also includes reinforcing ribs and reinforcing bars, which are spliced ​​together to form a stable fan-shaped structure.

[0017] Optionally, a lubricating material is added between the bushing and the connecting shaft.

[0018] Optionally, the anti-rotation groove is a set of countersunk holes with non-circular features.

[0019] Compared with the prior art, the present invention has the following advantages and technical effects:

[0020] The main body of the stair section is hollow inside and has movable and fixed slots. Combined with the fan-shaped tread body and the bushing located at the center, it provides ample space for the tread to be folded and unfolded, and the fan-shaped structure optimizes the force transmission path. The connecting shaft passes through the shaft hole and the bushing, allowing the tread to rotate around the shaft. When unfolded, the bearing surface is perpendicular to the stair section and the fixed surface abuts against the top of the fixed slot, ensuring stability and load transmission efficiency when stepping on it and meeting the high strength load-bearing requirements. When retracted, the bearing surface is parallel to the stair section and the fixed surface is located at the bottom of the movable slot, greatly reducing the storage volume. It solves the problems of traditional fixed treads not being foldable and foldable treads having insufficient load-bearing capacity. It takes into account structural strength, folding convenience and space utilization, and is suitable for high-rise staircase scenarios with requirements for both usage strength and storage size. Attached Figure Description

[0021] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0022] Figure 1 This is a front view of the unfolded foldable pedal structure in Embodiment 1 of this utility model.

[0023] Figure 2 This is a schematic diagram of the back structure of the foldable pedal structure in the unfolded state in Embodiment 1 of this utility model;

[0024] Figure 3 This is a front view of the foldable pedal structure in the folded state in Embodiment 1 of this utility model.

[0025] Figure 4 This is a schematic diagram of the back structure of the foldable pedal structure in the folded state in Embodiment 1 of this utility model;

[0026] Figure 5 This is a front view of the ladder structure in Embodiment 1 of this utility model;

[0027] Figure 6 This is a schematic diagram of the back of the ladder structure in Embodiment 1 of this utility model;

[0028] Figure 7 This is a schematic diagram of the pedal structure in Embodiment 1 of this utility model;

[0029] Figure 8 This is a schematic diagram of the main structure of the pedal in Embodiment 1 of this utility model;

[0030] Figure 9 This is a schematic diagram of the connecting shaft structure in Embodiment 1 of this utility model;

[0031] Figure 10 This is a front view of the foldable pedal structure in the folded state in Embodiment 2 of this utility model.

[0032] Figure 11 This is a front view of the ladder structure in Embodiment 2 of this utility model;

[0033] Figure 12 This is a schematic diagram of the locking structure in Embodiment 2 of this utility model.

[0034] In the diagram: 1. Stair section; 2. Step; 3. Connecting shaft; 4. Lock;

[0035] 101. Main body of the stair section; 102. Movable groove; 103. Fixed groove; 105. Shaft hole; 106. Anti-rotation groove; 107. Locking hole;

[0036] 201. Pedal body; 202. Bushing;

[0037] 2011, Bearing surface; 2012, Bushing mounting hole; 2013, Fixing surface; 2014, Reinforcing rib; 2015, Reinforcing rib; 2016, Weight reduction groove;

[0038] 301. Connecting shaft body; 302. Shaft cap;

[0039] 401. Lock body; 402. Connector; 403. Connecting rope;

[0040] 4011, Lock body; 4012, Lock body connecting hole; 4013, Lock groove;

[0041] 4021, Connecting hole for connector; 4022, Connecting post. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] Example 1

[0045] Reference Figures 1 to 9 As shown, this embodiment provides a foldable pedal structure, including a ladder section 1, a pedal 2, and a connecting shaft 3. The ladder section 1 is a support structure connected to the pedal 2 and is used to transfer the pedal load to the outside. The pedal 2, as the main load-bearing structure that bears the effective load, is an important component for realizing the product's function. The connecting shaft 3 is the pivot for the pedal 2 to rotate and is an important component for realizing the rotation and folding function of the pedal 2.

[0046] The stair section 1 includes a main body 101, a movable groove 102, a fixed groove 103, a shaft hole 105, and an anti-rotation groove 106. The main body 101 is a hollow column, and its internal space can meet the operation requirements of folding and unfolding the tread 2. The movable groove 102 is a through hole on one side of the main body of the tread 2 on the stair section 1, which facilitates the smooth folding and unfolding of the tread 2. The fixed groove 103 is an opening or groove on the opposite side of the main body of the tread 2 on the stair section 1, which serves as a limit when the tread 2 is opened. When the tread 2 is opened and fits against the fixed groove 103, the opening stops. After the tread 2 is fully opened, its fixed surface 2013 abuts against the top of the fixed groove 103. When the pedal 2 is in the open state and is under load, the top surface of the fixing groove 103 bears the compressive load from one side of the pedal 2 and transmits it to the entire stair section; the shaft hole 105 is a pair of coaxial through holes on the stair section 1, through which the connecting shaft 3 passes. When the pedal 2 is under load, the load acting on the connecting shaft 3 is transmitted to the entire stair section through the shaft hole 105; the anti-rotation groove 106 is a set of countersunk holes with non-circular features distributed on the outside of the shaft hole 105. Its function is to prevent the shaft cap 302 from rotating when the pedal 2 is in use, which would cause the structure to loosen.

[0047] The pedal 2 comprises two parts: a pedal body 201 and a bushing 202. The pedal body 201 further includes a bearing surface 2011, a bushing mounting hole 2012, a fixing surface 2013, a reinforcing rib 2014, a reinforcing rib 2015, and a weight-reducing groove 2016. The bearing surface 2011 is the main load-bearing carrier for the structure to achieve the step-able function. It is directly connected to the reinforcing ribs 2014 and ribs 2015. The bushing mounting hole 2012 is located outside the bushing 202 and is used in combination with the bushing 202. It rotates around the connecting shaft 3 during the folding and unfolding of the pedal 2. The fixing surface 2013 mates with the top surface of the fixing groove 103 of the stair section 1 to transfer the load of the pedal 2 to the stair section 1, while limiting the maximum opening and closing position of the pedal 2. The reinforcing ribs 2014 and ribs 2015 are the main load-bearing structures among the various components of the pedal 2, except for the bearing surface 2011. They are used to connect and combine other components and to transmit forces. The weight-reducing groove 2016 is a groove distributed on the rib 2015, mainly used to reduce the structural weight. The bushing 202, combined with the bushing mounting hole 2012, is fitted on the outside of the connecting shaft 3 to avoid material friction loss caused by the rotation of the pedal 2, which would lead to poor rotation.

[0048] The connecting shaft 3 includes a connecting shaft body 301 and a shaft cap 302. The connecting shaft body 301 is fitted inside the shaft sleeve 202 and serves as the rotation center of the pedal 2, enabling rotation and folding operations. The shaft cap 302 is located at both ends of the connecting shaft 3 and covers both ends of the connecting shaft body 301. The outer side is installed in the shaft hole 105 and anti-rotation groove 106 of the ladder section by adhesive bonding, which serves to protect the internal connecting shaft 3 and the pedal 2 structure and prevent the connecting shaft 3 from coming off.

[0049] The material of stair section 1 is composite material, steel alloy, aluminum alloy, or other materials with certain structural rigidity and strength, which can be used as the main load-bearing component of the structure.

[0050] The pedal 2 is made of structural materials such as steel alloy and aluminum alloy, which have certain structural rigidity and strength, and good formability and machinability for complex structures.

[0051] The connecting shaft 3 is made of structural materials such as steel alloy and aluminum alloy, which have certain structural rigidity and strength, and good wear resistance and fatigue resistance.

[0052] A certain amount of lubricating oil or grease is added between the bushing 202 in the pedal 2 and the main body 301 of the connecting shaft 3 to improve the smoothness of the structure's rotation, so that the structure can be folded and unfolded smoothly for a long time.

[0053] Example 2

[0054] Reference Figures 10 to 12As shown, the difference between the foldable pedal structure of this embodiment and that of Embodiment 1 is only that the foldable pedal structure consists of a ladder section 1, a pedal 2, a connecting shaft 3, and a latch 4. Specifically, the ladder section 1, based on Embodiment 1, has an additional latch mounting hole 107 to cooperate with the latch 4 for fixing it to the ladder section 1, preventing the latch 4 from falling off or being lost.

[0055] The latch 4 comprises three parts: a lock body 401, a connector 402, and a connecting rope 403. The lock body 401 is further divided into a latch main body 4011, a lock body connecting hole 4012, and a latch groove 4013. The latch main body 4011 is a columnar solid shape, and its mass is symmetrically distributed on both sides of the latch groove 4013. The lock body connecting hole 4012 is directly connected to the connecting rope 403, tightly binding the lock body 401 and the connecting rope 403. The latch groove 4013 is slightly wider than the fixed surface 2013. In use, it cooperates with the ladder section main body 101 and the fixed surface 2013 to realize the locking operation between the step 2 and the ladder section 1. The connector 402 is further divided into a connector connection hole 4021 and a connecting post 4022. The connector connection hole 4021 is directly connected to the connecting rope 403, which tightly connects the connector 402 and the connecting rope 403. The connecting post 4022 and the lock mounting hole 107 are combined to connect the entire structure of the lock 4 to the ladder section to prevent it from falling off.

[0056] When performing the folding and locking operation of pedal 2, pedal 2 is folded upwards to its limit, with the bearing surface 2011 fitting against the main body 101 of the stair section. A gap exists between the fixing surface 2013 and the main body 101 of the stair section. The locking body 401 of the latch 4 is inserted into this gap, and the latch groove 4013 is inserted downwards onto the fixing surface 2013, using gravity to lock it in place within the gap between the fixing surface 2013 and the main body 101 of the stair section. Because the mass distribution of the latch body 4011 is symmetrical about the latch groove 4013, the latch 4 will not disengage when pedal 2 is folded, thus achieving the folding and locking operation of pedal 2. To cancel the folding, simply remove the locking body 401 upwards from the fixing surface 2013 and pull it out of the gap; pedal 2 can then be unfolded according to usage requirements.

[0057] Any aspects of this utility model that are not detailed herein are conventional technical means known to those skilled in the art.

[0058] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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.

[0059] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A foldable pedal structure, characterized in that, include: The ladder segment (1) includes a ladder segment body (101), the ladder segment body (101) is hollow inside, the ladder segment body (101) has a movable groove (102) in front, a fixed groove (103) in the back, and shaft holes (105) in corresponding directions on both sides. The pedal (2) includes a pedal body (201) and a bushing (202); the pedal body (201) is fan-shaped, and the bushing (202) is located at the center point of the fan-shaped arc of the pedal body (201); a bearing surface (2011) and a fixing surface (2013) are respectively fixed at the two ends of the fan-shaped arc of the pedal body (201); A connecting shaft (3) passes through the shaft hole (105) and the bushing (202); When the pedal (2) is in the unfolded state, the bearing surface (2011) is perpendicular to the main body of the ladder section (101), and the fixing surface (2013) abuts against the top of the fixing groove (103); when the pedal (2) is in the retracted state, the bearing surface (2011) is parallel to the main body of the ladder section (101), and the fixing surface (2013) is located at the bottom of the movable groove (102).

2. The foldable pedal structure according to claim 1, characterized in that, An anti-rotation groove (106) is provided on the outer side of the shaft hole (105). The two ends of the connecting shaft (3) are detachably connected with shaft caps (302). The shaft caps (302) match the anti-rotation groove (106) and are snapped into the anti-rotation groove (106).

3. The foldable pedal structure according to claim 1, characterized in that, It also includes a latch (4) for locking the position of the pedal (2) in the retracted state.

4. The foldable pedal structure according to claim 3, characterized in that, The latch (4) includes a lock body (401), which has a lock groove. The width of the lock groove is greater than the width of the fixed surface (2013). When the pedal (2) is in the retracted state, the lock body (401) is engaged with the fixed surface (2013) through the lock groove.

5. The foldable pedal structure according to claim 4, characterized in that, The latch (4) also includes a connector (402) and a connecting rope (403). The connector (402) is fixed to the side of the ladder body (101), and the connecting rope (403) connects the connector (402) and the lock body (401).

6. The foldable pedal structure according to claim 1, characterized in that, The pedal body (201) also includes reinforcing ribs (2014) and reinforcing ribs (2015), which are spliced ​​together to form a stable fan-shaped structure.

7. The foldable pedal structure according to claim 1, characterized in that, Lubricating material is added between the bushing (202) and the connecting shaft (3).

8. The foldable pedal structure according to claim 2, characterized in that, The anti-rotation groove (106) is a set of countersunk holes with non-circular features.

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