Telescopic step
By designing a retractable step including a U-shaped frame, step and limit structure, the problem that the existing telescopic step cannot be fixed in the step spacing is solved, and the step spacing is conveniently adjusted and fixed, which improves the practicality and stability of the step.
Patent Information
- Application Number
- CN202422269662.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-18
AI Technical Summary
The existing telescopic steps cannot limit the distance between the steps after adjustment is completed, resulting in the steps that may be reset when affected by external forces, affecting practicality.
A retractable step including U-shaped frame, step one, step two and step three is designed. The expansion and retractability of the step is achieved through the combination of the connecting shaft, the rotating wheel and the sliding groove, and the step spacing is fixed after the adjustment is completed to prevent reset.
It realizes convenient adjustment and fixation of step spacing, prevents reset problems caused by external forces, and improves the practicality and stability of steps.
Smart Images
Figure CN223034393U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steps, in particular to a telescopic step. Background Technique
[0002] Steps are essential tools for people during travel. Steps are provided at positions where the height difference is large and it is difficult for people to step over to facilitate people's walking.
[0003] Existing steps are of two types: fixed and telescopic. Different forms are selected according to the actual situation to meet the convenience of people's travel.
[0004] However, the following problems still exist in the actual use process:
[0005] During the use of the existing telescopic steps, after each step is adjusted, the distance between the steps cannot be restricted. Therefore, when affected by external forces, the steps will reset, resulting in the steps being unable to play their due role, and further affecting the practicality of the steps in reality. Content of the Utility Model
[0006] Aiming at the deficiencies of the prior art, the utility model provides a telescopic step, which has the advantages of being able to conveniently adjust the distance between each step, and at the same time can restrict the distance between the steps after the adjustment is completed to prevent resetting, and solves the problems raised in the background technique.
[0007] The present utility model provides the following technical solutions: A telescopic step, comprising: a U-shaped frame, a first step, a second step, and a third step. Three groups of sliding grooves are provided on both sides of the U-shaped frame. Connecting shafts are fixedly connected to both sides of the first step, the second step, and the third step. Rotating wheels are movably connected to the outer surfaces of the connecting shafts. The outer surfaces of the rotating wheels are in rolling connection with the interiors of the sliding grooves. A number of first limiting grooves are provided on both sides of the upper surface of the first step. Through holes are provided at both front ends of the second step. A first rotating plate is rotatably connected to the interior of the through hole by a rotating shaft. The side of the first rotating plate is in contact with the upper surface of the first step. A first limiting groove is provided on the first rotating plate. A first limiting rod is inserted at the coincidence of the first limiting groove on the first rotating plate and the first limiting groove on the first step. A number of first limiting grooves are provided on both sides of the upper surface of the second step. Through holes are provided at both front ends of the third step. A first rotating plate is rotatably connected to the interior of the through hole by a rotating shaft. The side of the first rotating plate is in contact with the upper surface of the second step. A first limiting groove is provided on the first rotating plate. A first limiting rod is inserted at the coincidence of the first limiting groove on the first rotating plate and the first limiting groove on the second step. A number of second limiting grooves are provided on both sides of the upper surface of the U-shaped frame. Through holes are provided on both sides of the upper surface of the third step. A second rotating plate is rotatably connected to the interior of the through hole by a rotating shaft. A second limiting groove is provided on the second rotating plate. A second limiting rod is inserted at the coincidence of the second limiting groove on the second rotating plate and the second limiting groove on the U-shaped frame.
[0008] Preferably, a U-shaped block is attached to the lower surface of the first step. Through openings are provided at both front ends of the U-shaped frame. Both sides of the U-shaped block are in contact with the interiors of the through openings.
[0009] Preferably, a receiving groove is provided at the middle position of the connection between the rotating wheel and the connecting shaft. A number of balls are connected to the interior of the receiving groove.
[0010] Preferably, the first step, the second step, and the third step are of the same size, and the first step, the second step, and the third step are in contact and connected to each other.
[0011] Preferably, a first magnetic strip is installed inside the inner side of the through opening, and a second magnetic strip is installed inside both sides of the U-shaped block. The first magnetic strip and the second magnetic strip are magnetically adsorbed to each other.
[0012] Compared with the prior art, the present utility model has the following beneficial effects:
[0013] 1. When adjusting the scalability of Step 1, Step 2, and Step 3 of this retractable step, since connecting shafts are connected to both sides of Step 1, Step 2, and Step 3, and rotating wheels are rotatably connected to the outer surfaces of the connecting shafts. At the same time, the rotating wheels are in rolling connection inside the sliding grooves opened on both sides of the U-shaped frame. Therefore, by pulling Step 1, Step 2, and Step 3, scalability adjustment can be achieved. After the adjustment is completed, when fixing the positions of Step 1, Step 2, and Step 3, first, a number of groups of limiting grooves 1 are opened on both sides of the upper surface of Step 1. And at both ends of the front side of Step 2 that fits the upper surface of Step 1, slot holes 1 are opened. Inside the slot holes 1, a rotating plate 1 is rotatably connected through a rotating shaft. Rotate the rotating plate 1 so that the rotating plate 1 fits the upper surface of Step 1. At this time, the limiting groove 1 opened on the rotating plate 1 coincides with the limiting groove 1 opened on the upper surface of Step 1. By inserting the limiting rod 1 into the limiting groove 1, the position between Step 1 and Step 2 can be fixed. And the position between Step 2 and Step 3 can be fixed in the above way. Step 3 is fixed by rotating the rotating plate 2 inside its slot hole 2 to fit both sides of the upper surface of the U-shaped frame, and then inserting the limiting rod 2 to complete the fixing of Step 1, Step 2, and Step 3. The setting of this structure can adjust the distance between Step 1, Step 2, and Step 3 according to the actual situation to form a retractable step for use. After the adjustment is completed, the distance between Step 1, Step 2, and Step 3 can be fixed to prevent any step from resetting and becoming unusable due to the influence of external forces after adjustment. Its adjustment is convenient and easy for actual use.
[0014] 2. For this retractable step, by setting the U-shaped block, when the step adjustment is completed, by sliding the U-shaped block to the lower surface of Step 1 to pad Step 1, the situation of tipping when stepping on the step can be prevented. At the same time, when the step is not in use, Step 1, Step 2, and Step 3 are reset into the U-shaped frame. At this time, both ends of Step 1 are fitted into the slot openings opened on both sides of the U-shaped frame. At this time, the magnetic strip 2 provided on both sides of the U-shaped block and the magnetic strip 1 provided on the inner side of the slot opening are adsorbed, so as to limit the U-shaped block at this position. At this time, the outer sides of Step 1, Step 2, and Step 3 are in contact with the inner side of the U-shaped block, so as to limit the positions of Step 1, Step 2, and Step 3, which can effectively prevent the situation of random movement of Step 1, Step 2, and Step 3 during handling and facilitate the handling of the step. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic diagram of the overall structure of the device of the present utility model;
[0016] Figure 2 of the present utility model Figure 1 is a schematic side view structure diagram;
[0017] Figure 3 of the present utility model Figure 2Schematic diagram of the enlarged structure at A in the [device name];
[0018] Figure 4 This is a Figure 1 schematic diagram of a partial structure of the present utility model.
[0019] In the figure: 1, U-shaped frame; 2, U-shaped block; 3, first step; 4, second step; 5, third step; 6, notch; 7, first magnetic strip; 8, second magnetic strip; 9, sliding groove; 10, rotating wheel; 11, connecting shaft; 12, ball; 13, receiving groove; 14, first limiting groove; 15, first slot hole; 16, first rotating plate; 17, first limiting rod; 18, second slot hole; 19, second limiting groove; 20, second rotating plate; 21, second limiting rod. Specific embodiments
[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0021] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4, A telescopic step, comprising: a U-shaped frame 1, a first step 3, a second step 4 and a third step 5. Three groups of sliding grooves 9 are provided on both sides of the U-shaped frame 1. Connecting shafts 11 are fixedly connected to both sides of the first step 3, the second step 4 and the third step 5. Rotating wheels 10 are movably connected to the outer surface of the connecting shafts 11. The outer surface of the rotating wheels 10 is in rolling connection with the inside of the sliding grooves 9. A number of first limiting grooves 14 are provided on both sides of the upper surface of the first step 3. Slot holes 15 are provided at both ends of the front side of the second step 4. A first rotating plate 16 is rotatably connected to the inside of the slot holes 15 through a rotating shaft. The side of the first rotating plate 16 is attached to the upper surface of the first step 3. The first limiting grooves 14 are provided on the first rotating plate 16. A first limiting rod 17 is inserted at the overlapping position of the first limiting grooves 14 on the first rotating plate 16 and the first limiting grooves 14 on the first step 3. A number of first limiting grooves 14 are provided on both sides of the upper surface of the second step 4. Slot holes 15 are provided at both ends of the front side of the third step 5. A first rotating plate 16 is rotatably connected to the inside of the slot holes 15 through a rotating shaft. The side of the first rotating plate 16 is attached to the upper surface of the second step 4. The first limiting grooves 14 are provided on the first rotating plate 16. A first limiting rod 17 is inserted at the overlapping position of the first limiting grooves 14 on the first rotating plate 16 and the first limiting grooves 14 on the second step 4. A number of second limiting grooves 19 are provided on both sides of the upper surface of the U-shaped frame 1. Slot holes 18 are provided on both sides of the upper surface of the third step 5. A second rotating plate 20 is rotatably connected to the inside of the slot holes 18 through a rotating shaft. The second limiting grooves 19 are provided on the second rotating plate 20. A second limiting rod 21 is inserted at the overlapping position of the second limiting grooves 19 on the second rotating plate 20 and the second limiting grooves 19 on the U-shaped frame 1. A receiving groove 13 is provided at the middle position of the connection between the rotating wheel 10 and the connecting shaft 11. A number of ball bearings 12 are connected to the inside of the receiving groove 13. Since the rotating wheel 10 and the connecting shaft 11 rotate through the ball bearings 12, and the outer surface of the rotating wheel 10 is in rolling connection with the inside of the sliding groove 9, the first step 3, the second step 4 and the third step 5 can be pulled to adjust the telescopic property. Since a number of first limiting grooves 14 are provided on both sides of the upper surface of the first step 3, and slot holes 15 are provided at both ends of the front side of the second step 4 which is attached to the upper surface of the first step 3. A first rotating plate 16 is rotatably connected to the inside of the slot holes 15 through a rotating shaft. Rotate the first rotating plate 16 so that the first rotating plate 16 is attached to the upper surface of the first step 3. At this time, the first limiting grooves 14 provided on the first rotating plate 16 coincide with the first limiting grooves 14 provided on the upper surface of the first step 3. The position between the first step 3 and the second step 4 can be fixed by inserting the first limiting rod 17 into the first limiting grooves 14. The second step 4 and the third step 5 are fixed in the above manner. The third step 5 is attached to both sides of the upper surface of the U-shaped frame 1 by rotating the second rotating plate 20 inside the slot holes 18, and can be fixed by inserting the second limiting rod 21, thus completing the fixation of the first step 3, the second step 4 and the third step 5.
[0022] Please refer to Figure 2 and Figure 3, a U-shaped block 2 is attached to the lower surface of the first step 3. Notches 6 are provided at both ends of the front side of the U-shaped frame 1. Both sides of the U-shaped block 2 are attached to the inside of the notches 6. A first magnetic strip 7 is installed inside the inner side of the notch 6, and a second magnetic strip 8 is installed inside both sides of the U-shaped block 2. The first magnetic strip 7 and the second magnetic strip 8 are magnetically adsorbed. Slide the U-shaped block 2 to the lower surface of the first step 3 to pad the first step 3, thereby preventing it from tipping over when stepping on the steps. At the same time, when the steps are not in use, the first step 3, the second step 4, and the third step 5 are reset into the U-shaped frame 1. At this time, both ends of the first step 3 are attached to the inside of the notches 6 provided on both sides of the U-shaped frame 1. At this time, the second magnetic strip 8 provided on both sides of the U-shaped block 2 and the first magnetic strip 7 provided on the inner side of the notch 6 are adsorbed, thereby limiting the U-shaped block 2 in place. At this time, the outer sides of the first step 3, the second step 4, and the third step 5 are attached to the inner side of the U-shaped block 2, thereby limiting the positions of the first step 3, the second step 4, and the third step 5.
[0023] Please refer to Figure 1 , the first step 3, the second step 4, and the third step 5 are of the same size and are attached and connected to each other.
[0024] Working principle: When in use, first, by pulling the first step 3, the second step 4, and the third step 5, telescopic adjustment can be performed. After the adjustment is completed, when fixing the positions of the first step 3, the second step 4, and the third step 5, first, a number of groups of first limiting grooves 14 are provided on both sides of the upper surface of the first step 3, and both ends of the front side of the second step 4 that fits on the upper surface of the first step 3 are provided with first slot holes 15. A first rotating plate 16 is rotatably connected to the inside of the first slot hole 15 through a rotating shaft. Rotate the first rotating plate 16 so that the first rotating plate 16 fits on the upper surface of the first step 3. At this time, the first limiting grooves 14 provided on the first rotating plate 16 coincide with the first limiting grooves 14 provided on the upper surface of the first step 3. By inserting the first limiting rod 17 into the first limiting grooves 14, the positions between the first step 3 and the second step 4 can be fixed, and the second step 4 and the third step 5 can be fixed in the above manner. The third step 5 is attached to both sides of the upper surface of the U-shaped frame 1 by rotating the second rotating plate 20 inside its second slot hole 18, and can be fixed by inserting the second limiting rod 21, thereby completing the fixation of the first step 3, the second step 4, and the third step 5. After the step adjustment is completed, by sliding the U-shaped block 2 to the lower surface of the first step 3, the first step 3 is padded.
[0025] When the steps are not in use, the first step 3, the second step 4 and the third step 5 are reset inside the U-shaped frame 1. At this time, both ends of the first step 3 are fitted into the inside of the slots 6 opened on both sides of the U-shaped frame 1. At this time, the second magnetic strips 8 arranged on both sides of the U-shaped block 2 and the first magnetic strips 7 arranged on the inner side of the slots 6 are adsorbed, so as to limit the U-shaped block 2 at this position. At this time, the outer sides of the first step 3, the second step 4 and the third step 5 are in contact with the inner side of the U-shaped block 2, so as to limit the positions of the first step 3, the second step 4 and the third step 5.
[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A retractable step, characterized in that: include: A U-shaped frame (1), a step 1 (3), a step 2 (4) and a step 3 (5), wherein three groups of slide grooves (9) are provided on both sides of the U-shaped frame (1), and both sides of the step 1 (3), the step 2 (4) and the step 3 (5) are fixedly connected with a connecting shaft (11), and the outer surface of the connecting shaft (11) is movably connected with a rotating wheel (10), and the outer surface of the rotating wheel (10) is rollingly connected to the inside of the slide groove (9), and a plurality of groups of limit grooves (11) are provided on both sides of the upper surface of the step 1 (3). 14), both ends of the front side of the step 2 (4) are provided with a slot hole 1 (15), the interior of the slot hole 1 (15) is rotatably connected with a rotating plate 1 (16) through a rotating shaft, the side of the rotating plate 1 (16) is in contact with the upper surface of the step 1 (3), a limiting groove 1 (14) is provided on the rotating plate 1 (16), and a limiting rod 1 (17) is inserted at the overlapped position of the limiting groove 1 (14) on the rotating plate 1 (16) and the limiting groove 1 (14) on the step 1 (3), the step 2 (4) A plurality of groups of limiting grooves (14) are provided on both sides of the upper surface of the step three (5), a slot hole (15) is provided at both ends of the front side of the step three (5), a rotating plate (16) is rotatably connected to the inside of the slot hole (15) through a rotating shaft, the side of the rotating plate (16) is in contact with the upper surface of the step two (4), a limiting groove (14) is provided on the rotating plate (16), and the limiting groove (14) on the rotating plate (16) is plugged into the overlapping position of the limiting groove (14) on the step two (4) A limiting rod (17) is provided, a plurality of groups of limiting grooves (19) are provided on both sides of the upper surface of the U-shaped frame (1), a slot hole (18) is provided on both sides of the upper surface of the step (5), a rotating plate (20) is rotatably connected to the inside of the slot hole (18) via a rotating shaft, a limiting groove (19) is provided on the rotating plate (20), and a limiting rod (21) is inserted into the overlapped position of the limiting groove (19) on the rotating plate (20) and the limiting groove (19) on the U-shaped frame (1).
2. A retractable step according to claim 1, characterized in that: A U-shaped block (2) is fitted on the lower surface of the step 1 (3), and notches (6) are provided at both ends of the front side of the U-shaped frame (1), and the two sides of the U-shaped block (2) are fitted with the inside of the notches (6).
3. A retractable step according to claim 1, characterized in that: A receiving groove (13) is provided in the middle of the connection between the rotating wheel (10) and the connecting shaft (11), and a plurality of groups of rolling balls (12) are connected inside the receiving groove (13).
4. A retractable step according to claim 1, characterized in that: The step one (3), the step two (4) and the step three (5) are of the same size, and the step one (3), the step two (4) and the step three (5) are closely connected.
5. A retractable step according to claim 2, characterized in that: A magnetic stripe 1 (7) is installed inside the inner side of the slot (6), and a magnetic stripe 2 (8) is installed inside the two sides of the U-shaped block (2). The magnetic stripe 1 (7) and the magnetic stripe 2 (8) are magnetically adsorbed.