Elastic tension structure of a storable running belt

Abstract

This utility model discloses an elastic tensioning structure for a retractable running belt, including an elastic tensioning component installed at the bottom of a retractable running frame. The retractable running frame is movably mounted on a fixed running frame. A retractable running belt is fitted onto the surfaces of both the fixed and retractable running frames. The elastic tensioning component tensions the retractable running belt. This utility model offers the advantage of high flexibility, solving the problem that existing retractable running belt tensioning structures are inconvenient to adaptively adjust the tension according to the degree of belt retraction during use. Furthermore, excessively high contact tension can easily lead to wear on the running belt surface, reducing the service life of both the running belt and the tensioning structure.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment technology, specifically to an elastic tensioning structure for a retractable running belt. Background Technology

[0002] A treadmill is a common piece of fitness equipment used to simulate the exercise experience of running or walking outdoors. It typically consists of a moving belt with adjustable speed and incline, allowing users to walk or run at different speeds. A foldable treadmill, on the other hand, is a space-saving option. Its main difference from a traditional treadmill lies in its foldable design, usually including a running frame that can be folded up. This design allows users to easily fold it away when not in use, reducing its space requirements. When folding away, the running frame at the bottom of the treadmill folds up, simultaneously retracting the running belt. After folding, the running belt needs to be tensioned to prevent wrinkles that could affect its subsequent unfolding.

[0003] Existing retractable treadmill belt tensioning structures are not convenient for adaptive adjustment of tension based on the degree of belt retraction during use. When the contact tension is too high, it can easily cause wear on the treadmill belt surface, reducing the service life of the treadmill belt and tensioning structure. Utility Model Content

[0004] The purpose of this invention is to provide a retractable elastic tensioning structure for running belts, which has the advantage of good flexibility. It solves the problem that existing retractable running belt tensioning structures are not convenient to adaptively adjust the tension according to the degree of retraction of the running belt during use. When the contact tension is too high, it is easy to cause wear on the surface of the running belt, which reduces the service life of the running belt and the tensioning structure.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an elastic tensioning structure for a retractable running belt, comprising an elastic tensioning component, the elastic tensioning component being installed at the bottom of a retractable running frame, the retractable running frame being movably installed on a fixed running frame, a retractable running belt being sleeved on the surfaces of the fixed running frame and the retractable running frame, and the elastic tensioning component tensioning the retractable running belt.

[0006] As a preferred embodiment of the retractable running belt elastic tensioning structure of this utility model, when the elastic tensioning component tensions the retractable running belt, a tensioning cavity is formed on the surface of the retractable running belt, and the volume of the tensioning cavity decreases as the elastic tensioning component tensions the retractable running belt.

[0007] As a preferred embodiment of the retractable running belt elastic tensioning structure of this utility model, when the elastic tensioning component tensions the retractable running belt, the elastic tensioning component deforms according to the tension force on the surface of the retractable running belt.

[0008] As a preferred embodiment of the retractable running belt elastic tensioning structure of this utility model, the elastic tensioning component includes an elastic element, with sleeves at both the front and rear ends of the elastic element. The sleeves are fitted onto fixing pins, and the fixing pins are installed at the bottom of the fixed running frame.

[0009] As a preferred embodiment of the retractable running belt elastic tensioning structure of this utility model, the elastic element is equipped with fixing members for fixing the sleeve head at both the front and rear ends.

[0010] As a preferred embodiment of the retractable running belt elastic tensioning structure of this utility model, one end of the fixing pin is provided with a limiting head for limiting the sleeve head.

[0011] As a preferred embodiment of the retractable running belt elastic tensioning structure of this utility model, the elastic element is an elastic rope.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model achieves automatic adjustment of the running belt tension and coordinated operation during the storage process by setting an elastic tensioning component at the bottom of the retractable running frame. The elastic tensioning component uses an elastic rope as the core elastic element, and its two ends are installed on the fixing pin through a sleeve and a fixing component, and are prevented from falling off by a limiting head. The structure is simple and reliable. The elastic element applies a uniform tension force to the retractable running belt. During storage, as the retractable running frame is folded and folded into the fixed running frame, the elastic element automatically deforms according to the surface tension of the running belt, dynamically releasing or absorbing the tension, so that the running belt always maintains appropriate tension during the folding process, preventing wrinkles, wear or structural damage caused by excessive bending, folding or friction, and significantly improving the durability and storage reliability of the running belt.

[0014] 2. This utility model improves the ease of use and user experience of the folding treadmill. Users can quickly unfold and fold the running belt without manually adjusting the tension screw or performing complicated operations. The operation is simple and efficient. The design of the tension cavity, combined with the elastic deformation mechanism, not only extends the service life of the foldable running belt but also reduces the need for daily maintenance. At the same time, the use of low-cost elastic ropes as elastic components, combined with the modular installation structure, is conducive to mass production, reducing manufacturing and subsequent maintenance costs. The overall structure is compact and suitable for home environments with limited space, combining practicality, economy and high reliability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the unfolded state of this utility model;

[0016] Figure 2 This is a schematic diagram of the tensioned state of this utility model. Figure 1 ;

[0017] Figure 3This is a schematic diagram of the tensioned state of this utility model. Figure 2 ;

[0018] Figure 4 This utility model Figure 3 Enlarged view of A in the middle;

[0019] Figure 5 This is a schematic diagram of the structure of this utility model.

[0020] In the diagram: 1. Elastic tensioning component; 2. Fixed running frame; 3. Retractable running frame; 4. Retractable running belt; 5. Tensioning cavity; 101. Elastic element; 102. Fixing element; 103. Sleeve head; 104. Limiting head; 105. Fixing pin. Detailed Implementation

[0021] Please see Figures 1-5 An elastic tensioning structure for a retractable running belt includes an elastic tensioning component 1, which is installed at the bottom of a retractable running frame 3. The retractable running frame 3 is movably installed on a fixed running frame 2. A retractable running belt 4 is fitted on the surfaces of the fixed running frame 2 and the retractable running frame 3. The elastic tensioning component 1 tensions the retractable running belt 4.

[0022] Furthermore, when the elastic tensioning component 1 tensions the retractable running belt 4, a tensioning cavity 5 is formed on the surface of the retractable running belt 4, and the volume of the tensioning cavity 5 decreases as the elastic tensioning component 1 tensions the retractable running belt 4.

[0023] Furthermore, when the elastic tensioning component 1 tensions the retractable running belt 4, the elastic tensioning component 1 deforms according to the tension force on the surface of the retractable running belt 4.

[0024] Furthermore, the elastic tensioning assembly 1 includes an elastic element 101, with sleeves 103 at both ends of the elastic element 101. The sleeves 103 are fitted onto the fixing pins 105, and the fixing pins 105 are installed at the bottom of the fixed running frame 2.

[0025] Furthermore, the elastic element 101 is fitted with fasteners 102 at both ends to fix the sleeve head 103.

[0026] Furthermore, one end of the fixing pin 105 is provided with a limiting head 104 that limits the position of the sleeve head 103.

[0027] Furthermore, the elastic element 101 is an elastic rope.

[0028] When the treadmill is stored, the retractable running frame 3 moves towards the fixed running frame 2. The elastic tensioning component 1 deforms according to the tension on the surface of the running belt 4. The elastic tensioning component 1 applies tension to the retractable running belt 4 through the elastic element 101. The two ends of the elastic element 101 are fixed to the fixing pin 105 by the sleeve 103. The surface of the elastic element 101 is in contact with the surface of the retractable running belt 4 to ensure that the tension is evenly distributed. When the elastic tensioning component 1 applies tension to the retractable running belt 4, a tension cavity 5 is formed on the surface of the running belt. As the tension increases, the volume of the tension cavity 5 gradually decreases to ensure that the retractable running belt 4 maintains appropriate tension and avoids slack and wrinkles, thereby protecting the structural integrity of the retractable running belt 4. When the user unfolds the treadmill, the elastic element 101 quickly returns to its original shape, and the retractable running belt 4 unfolds smoothly and returns to its optimal exercise state.

[0029] The elastic tensioning assembly 1 achieves dynamic adjustment of the tension of the retractable running belt 4 through the deformation capability of the elastic element 101. Without manual intervention, users can easily retract and unfold the running belt, improving ease of use. The volume change design of the tensioning cavity 5 can prevent wear or breakage of the retractable running belt 4 due to excessive bending or stretching during the retraction process, while reducing the risk of deviation during long-term use and extending the service life of the running belt. The automatic adjustment of tension reduces excessive wear on the surface of the retractable running belt 4. The elastic element 101 is an elastic rope, which is simple and inexpensive. At the same time, the modular design facilitates maintenance and replacement, reducing production and subsequent maintenance costs.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A retractable running belt elastic tensioning structure, comprising an elastic tensioning component (1), characterized in that: The elastic tensioning component (1) is installed at the bottom of the retractable running frame (3), which is movably installed on the fixed running frame (2). The fixed running frame (2) and the retractable running frame (3) are fitted with a retractable running belt (4). The elastic tensioning component (1) tensions the retractable running belt (4).

2. The retractable running belt elastic tensioning structure according to claim 1, characterized in that: When the elastic tensioning component (1) tensions the retractable running belt (4), a tensioning cavity (5) is formed on the surface of the retractable running belt (4), and the volume of the tensioning cavity (5) decreases as the elastic tensioning component (1) tensions the retractable running belt (4).

3. The retractable running belt elastic tensioning structure according to claim 1, characterized in that: When the elastic tensioning component (1) tensions the retractable running belt (4), the elastic tensioning component (1) deforms according to the tension force on the surface of the retractable running belt (4).

4. The retractable running belt elastic tensioning structure according to claim 1, characterized in that: The elastic tensioning assembly (1) includes an elastic element (101), and sleeves (103) are provided at the front and rear ends of the elastic element (101). The sleeves (103) are fitted onto the fixing pins (105), and the fixing pins (105) are installed at the bottom of the fixed running frame (2).

5. The retractable running belt elastic tensioning structure according to claim 4, characterized in that: The elastic element (101) is equipped with fasteners (102) at both ends to fix the sleeve (103).

6. The retractable running belt elastic tensioning structure according to claim 5, characterized in that: One end of the fixing pin (105) is provided with a limiting head (104) that limits the sleeve head (103).

7. The retractable running belt elastic tensioning structure according to claim 6, characterized in that: The elastic element (101) is an elastic rope.

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