Stairlift with anti-trapping

Abstract

The utility model discloses a kind of anti-pinch foot stair machines, comprising: two groups of oppositely arranged transmission chain components, any transmission chain component includes sprocket and chain, chain is arranged between two sprockets;Multiple interval settings pedal;Vertical plate rotation is arranged between adjacent two pedals, vertical plate includes first vertical plate part and second vertical plate part, first vertical plate part is connected with second vertical plate part and perpendicular to each other, first vertical plate part is rotationally connected with adjacent one of pedal, second vertical plate part is rotationally connected with adjacent another pedal, the pivot between first vertical plate part and pedal is connected with chain.This scheme changes the shape of vertical plate to avoid the closed area generated between pedal and vertical plate, so as to completely avoid the phenomenon of pinching foot caused by user when using stair machine, avoid the occurrence of safety accident from the source.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment technology, and in particular to an anti-pinch stair machine. Background Technology

[0002] A stair climber is a common fitness equipment that simulates climbing stairs. It uses the user's alternating footsteps on two sets of pedals to drive a transmission system, causing the pedals to move in a cyclical up-and-down motion. One type of stair climber has a vertical plate between adjacent pedals. As the vertical plate follows the transmission chain into the turning zone, the angle between the pedal and the vertical plate changes with the chain's movement. This gradually closing area contains a potential pinch point, which can cause discomfort if the user accidentally steps into it and gets their foot caught.

[0003] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0004] In response to the problems pointed out in the background art, this utility model proposes an anti-foot-pinch stair machine. By changing the shape of the uprights, the closed area between the treads and the uprights is avoided, thereby completely preventing the foot-pinch phenomenon caused by the user's carelessness when using the stair machine, thus preventing safety accidents from the source.

[0005] To achieve the above-mentioned objectives, the present invention employs the following technical solution: In some embodiments of this application, an anti-pinch stair machine is provided, comprising: Two sets of oppositely arranged transmission chain assemblies, each of the transmission chain assemblies including a sprocket and a chain, with the chain disposed between the two sprockets; Multiple interval pedals; A vertical plate is rotatably disposed between two adjacent pedals. The vertical plate includes a first vertical plate portion and a second vertical plate portion. The first vertical plate portion and the second vertical plate portion are connected and perpendicular to each other. The first vertical plate portion is rotatably connected to one of the adjacent pedals, and the second vertical plate portion is rotatably connected to the other adjacent pedal. The pivot between the first vertical plate portion and the pedal is connected to the chain.

[0006] In some embodiments of this application, the first upright plate portion and the second upright plate portion are an integral structure.

[0007] In some embodiments of this application, a reinforcing portion is provided between the first upright plate portion and the second upright plate portion, and the reinforcing portion is located at the end of the upright plate.

[0008] In some embodiments of this application, a reinforcing rib is provided on the back side of the second upright plate.

[0009] In some embodiments of this application, the pedal is provided with an anti-slip part.

[0010] In some embodiments of this application, the width of the second upright plate is W2, and the range of W2 is 16-22cm.

[0011] In some embodiments of this application, the width of the first upright plate is W1, the width of the pedal is W3, and the sum of W1 and W3 is in the range of 28-30cm.

[0012] In some embodiments of this application, the width of the first upright plate is W1, the width of the pedal is W3, and the range of W1 / W3 is 0.22-0.25.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are: In the staircase machine disclosed in this application, the riser is designed with an L-shaped structure. This structure prevents the formation of a closed, dangerous zone when the treads and riser rotate during rotation, thus completely avoiding the risk of foot pinching. The modified L-shaped riser structure has high strength and does not affect its original load-bearing and transmission functions.

[0014] The anti-pinch design of this application does not introduce complex additional components; improvements are achieved solely through optimizing the shape and connection method of the uprights. The L-shaped uprights have a simple molding process, requiring no complex curved surface machining or precision assembly, and can be mass-produced with minor adjustments based on traditional upright production equipment. The uprights only require a rotating connection to cooperate with existing treads and chains, without requiring modifications to the overall frame of the stair machine, the position of the sprockets, or other basic structures. Whether for new equipment production or upgrades of existing equipment, it can be quickly adapted, reducing the time and labor costs of production and modification.

[0015] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a partial structural diagram of an anti-pinch stair machine according to some embodiments; Figure 2 This describes the partial operating state of an anti-pinch stair machine according to some embodiments. Figure 1 ; Figure 3 This describes the partial operating state of an anti-pinch stair machine according to some embodiments. Figure 2 ; Figure 4 This describes the partial operating state of an anti-pinch stair machine according to some embodiments. Figure 3 .

[0018] Figure label: 100. Chain; 200. Sprockets; 310. First pedal; 320. Second pedal; 400. Vertical plate; 410. First vertical plate section; 420. Second vertical plate section; 430. Reinforcing section; 440. Reinforcing rib; 500, pivot; 600. Anti-slip part. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "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 application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0025] In some embodiments of this application, an anti-pinch staircase machine is provided, as described below. Figure 1 It includes two sets of drive chain assemblies arranged opposite each other. Each drive chain assembly includes a sprocket 200 and a chain 100, with the chain 100 disposed between the two sprockets 200.

[0026] The anti-pinch stair machine also includes multiple spaced-apart treads, with drive chain assemblies on the left and right sides of each tread.

[0027] The anti-pinch stair machine also includes a vertical plate 400, which is rotatably positioned between two adjacent steps. The two steps adjacent to the vertical plate 400 are designated as the first step 310 and the second step 320, respectively.

[0028] The upright plate 400 has an L-shaped structure and includes a first upright plate portion 410 and a second upright plate portion 420. The first upright plate portion 410 and the second upright plate portion 420 are connected and perpendicular to each other. The first upright plate portion 410 is rotatably connected to one of the adjacent pedals (e.g., the first pedal 310), and the second upright plate portion 420 is rotatably connected to the other adjacent pedal (e.g., the second pedal 320).

[0029] The pivot 500 between the first upright plate 410 and the pedal is connected to the chain 100. That is, the first upright plate 410 and the first pedal 310 are rotatably connected via the pivot 500, which is also connected to the chain 100. The pivot 500 is connected to the chain 100 and works in conjunction with the sprocket 200 for subsequent movement.

[0030] When exercising, a person steps on the pedal, which moves downwards under the influence of their weight. The pedal drives the upright plate 400 to rotate along the chain 100 via the pivot 500.

[0031] Figures 2 to 4 To illustrate the state of the riser 400 at different positions during the movement of the stair machine, let θ be the angle between the first step 310 and the second riser 420. As the first step 310 descends, the angle between the riser 400 and the second riser 420... Figures 2 to 4 θ decreases as it increases. Figure 1 and Figure 4 In this state, the first upright plate 410 and the first pedal 310 are on the same horizontal plane, and the second upright plate 420 is in a vertical state.

[0032] This application designs the upright plate 400 as an L-shaped structure. This structure prevents the pedal and upright plate 400 from forming a dangerous, closed area during rotation, thus completely avoiding the risk of foot pinching. The modified L-shaped upright plate 400 has high structural strength and does not affect its original load-bearing and transmission functions.

[0033] In the stair machine disclosed in this application, the L-shaped upright plate 400 is composed of a first upright plate portion 410 and a second upright plate portion 420 that are perpendicular to each other. The first upright plate portion 410 is rotatably connected to the adjacent first tread 310, and the second upright plate portion 420 is rotatably connected to the adjacent second tread 320. When the stair machine moves into the turning area, since the two parts of the upright plate 400 are vertically fixed, the relative movement between the adjacent tread and the upright plate 400 is always constrained by the L-shaped structure. Even if the included angle changes, a dangerous area of ​​contraction and closure will not be formed, completely preventing the possibility of the user accidentally stepping into the pinch point. This structurally eliminates foot-pinching accidents and improves the safety level of the stair machine.

[0034] The integrated structure of the L-shaped upright plate 400 has higher structural strength than the traditional flat upright plate 400. The two vertically connected upright plates 400 can distribute the force to each other and can stably withstand the pressure generated when the user steps on the pedal. The load-bearing capacity will not decrease due to structural modifications.

[0035] The pivot 500 between the first upright plate 410 and the first pedal 310 is directly connected to the chain 100. When the user steps on the pedal and the pedal moves downward under the action of gravity, the pivot 500 can synchronously drive the upright plate 400 to rotate along the direction of the chain 100. This fully follows the original pedal drive transmission system of the stair machine to achieve the working logic of cyclic lifting and lowering without causing any interference to the transmission path or transmission efficiency, ensuring that the core function is not affected by the modification.

[0036] The anti-pinch design of this application does not introduce complex additional components; the improvement is achieved solely by optimizing the shape and connection method of the upright plate 400. The L-shaped upright plate 400 has a simple molding process, requiring no complex curved surface machining or precision assembly. It can be mass-produced with minor adjustments based on the production equipment of the traditional upright plate 400. The upright plate 400 only needs to be rotated to cooperate with the existing pedals and chain 100, without requiring any changes to the overall frame of the stair machine, the position of the sprocket 200, or other basic structures. Whether for new equipment production or upgrading of old equipment, it can be quickly adapted, reducing the time and labor costs of production and modification.

[0037] In some embodiments of this application, the first upright plate portion 410 and the second upright plate portion 420 are an integral structure.

[0038] The first upright plate 410 and the second upright plate 420 are made into an L-shaped structure by an integral molding process. There are no splicing gaps or detachable connection points between them. Their vertical angle is fixed in one step during the manufacturing process, and the rotational connection positions with the adjacent first pedal 310 and second pedal 320 are processed and formed simultaneously.

[0039] When the stair machine is in normal use, when the user steps on the first pedal 310, the first pedal 310 descends along the chain 100 under the action of gravity. At this time, the first upright plate 410 moves synchronously with the first pedal 310 via the pivot 500, and the second upright plate 420 drives the second pedal 320 to rotate via another pivot 500. Since the first upright plate 410 and the second upright plate 420 are an integral structure, their vertical relative positions remain fixed and will not shift due to force. This ensures that throughout the entire rotation process in the turning area, the second upright plate 420 always maintains a preset rotation trajectory with the second pedal 320. The adjacent pedals and the upright plate 400 only form a controllable angle change, without creating additional gaps or closed spaces due to deformation of the upright plate 400 itself. This completely eliminates hidden pinch points that may be caused by precision deviations in the separate structure, further enhancing the reliability of the anti-pinch function.

[0040] When a user steps on the pedal, the vertical pressure on the pedal is transmitted to the upright plate 400 through the pivot 500. The first upright plate 410 needs to withstand the downward pulling force of the first pedal 310, and the second upright plate 420 needs to withstand the following rotational pressure of the second pedal 320. The connection between the two is the main stress point. Compared with a split structure, the integrated structure has no weak points, and its stress can be evenly distributed along the upright plate 400, avoiding structural damage caused by local stress concentration.

[0041] In some embodiments of this application, a reinforcing portion 430 is provided between the first upright plate portion 410 and the second upright plate portion 420, and the reinforcing portion 430 is located at the end of the upright plate 400. For example, the reinforcing portion 430 is a plate structure. The structural reliability of the upright plate 400 is further improved by the reinforcing portion 430.

[0042] In some embodiments of this application, a reinforcing rib 440 is provided on the back side of the second upright plate 420 to further improve the structural reliability of the upright plate 400.

[0043] In some embodiments of this application, the pedal is provided with an anti-slip portion 600. For example, the anti-slip portion 600 is a U-shaped protrusion structure to increase the friction with the foot.

[0044] In some embodiments of this application, the width of the second upright plate portion 420 is W2. Figure 1 In the indicated state, the first pedal 310 and the first upright plate 410 are horizontal, and the second upright plate 420 is vertical. The width of the second upright plate 420 is W2, which is the height of the second upright plate 420 in the vertical direction. The range of W2 is 16-22cm. The size of W2 is moderate, conforms to ergonomics, and can effectively improve exercise efficiency.

[0045] In some embodiments of this application, the width of the first upright plate 410 is W1, the width of the pedal is W3, the sum of W1 and W3 ranges from 28 to 30 cm, and the ratio of W1 to W3 ranges from 0.22 to 0.25. The limitation of the size range of W1 and W3 can take into account both the foot tread area and the anti-pinch structure requirements of the L-shaped upright plate.

[0046] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0047] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An anti-pinch staircase machine, characterized in that, Including: Two sets of oppositely arranged transmission chain assemblies, each of the transmission chain assemblies including a sprocket and a chain, with the chain disposed between the two sprockets; Multiple interval pedals; A vertical plate is rotatably disposed between two adjacent pedals. The vertical plate includes a first vertical plate portion and a second vertical plate portion. The first vertical plate portion and the second vertical plate portion are connected and perpendicular to each other. The first vertical plate portion is rotatably connected to one of the adjacent pedals, and the second vertical plate portion is rotatably connected to the other adjacent pedal. The pivot between the first vertical plate portion and the pedal is connected to the chain.

2. The anti-pinch staircase machine according to claim 1, characterized in that, The first upright plate and the second upright plate are an integral structure.

3. The anti-pinch staircase machine according to claim 1, characterized in that, A reinforcing portion is provided between the first upright plate and the second upright plate, and the reinforcing portion is located at the end of the upright plate.

4. The anti-pinch staircase machine according to claim 1, characterized in that, The back side of the second upright plate is provided with reinforcing ribs.

5. The anti-pinch staircase machine according to claim 1, characterized in that, The pedal is equipped with an anti-slip part.

6. The anti-pinch staircase machine according to any one of claims 1 to 5, characterized in that, The width of the second upright plate is W2, and the range of W2 is 16-22cm.

7. The anti-pinch staircase machine according to any one of claims 1 to 5, characterized in that, The width of the first upright plate is W1, and the width of the pedal is W3. The sum of W1 and W3 is 28-30cm.

8. The anti-pinch staircase machine according to any one of claims 1 to 5, characterized in that, The width of the first upright plate is W1, the width of the pedal is W3, and the range of W1 / W3 is 0.22-0.25.

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