Silent wheel body of abdominal wheel

Abstract

The utility model belongs to the technical field of abdominal wheel structures for fitness, in particular to a silent wheel body of an abdominal wheel, which comprises a wheel body, a rotating shaft penetrates through the middle of the wheel body and is rotatably connected with the wheel body, and a spring is arranged between the rotating shaft and the wheel body. The spring is located in the wheel body, one end of the spring is fixed to the wheel body, and the other end of the spring is fixed to the rotating shaft. The spring is formed by transversely surrounding a metal wire, and a spring ring of the spring is arranged between the wheel body and the rotating shaft in a suspended mode. A sleeve is arranged on the side edge of the wheel body and extends into one end of the spring. A gap is formed between the spring and the sleeve, the wheel body rotates so that the spring can retract inwards, and the spring can abut against the outer side wall of the sleeve after deformation. Or no gap exists between the spring and the sleeve, and the spring abuts against the outer side of the sleeve; the sleeve is provided with a plurality of longitudinal notches, and under the action of the longitudinal notches, the sleeve has elasticity and can deform inwards. The utility model provides an abdominal wheel body which is simple in structure and mute.

Description

Technical Field

[0001] The utility model belongs to the technical field of abdominal wheel structures for fitness, in particular to a silent wheel body of an abdominal wheel. Background Art

[0002] The ab wheel is a physical exercise device with a simple structure, easy application, and obvious effect. When exercising, kneel on your knees, hold the handles with both hands, and place the ab wheel in front of your body. You can use the ab wheel to do abdominal exercises at home, and the effect is much better than traditional sit-ups. In order to reduce the difficulty of operation for users, elbow-supported ab wheels have appeared on the market, such as Chinese patent 202223039061.8, a double-wheel elbow-supported ab wheel. The ab wheel uses elbow support to perform abdominal exercises, so that beginners can also get started. In fact, regardless of the above-mentioned ab wheel, in order to facilitate users to exercise, the manufacturer will set a reset spring in the wheel body of the ab wheel to help users complete the exercise.

[0003] For example, Chinese patent CN202222366581.3, a kind of abdominal wheel. A return spring is arranged in the wheel body of the abdominal wheel, and the return spring is limited by a positioning sleeve. If there is no positioning sleeve, the return spring is directly installed in the wheel body of the abdominal wheel, and the return spring is not positioned. The return spring will be twisted and deformed during the deformation process, thereby hitting the rotating shaft or the wheel body of the abdominal wheel, thereby generating a clicking noise; the abdominal wheel is provided with a positioning sleeve to make the deformation process of the return spring more stable, but when the spring is deformed too much, it will still rub against the inner side of the positioning sleeve to generate a certain amount of friction noise. Therefore, a silent abdominal wheel body is needed in the market. Summary of the invention

[0004] The utility model aims to provide an abdominal wheel body with simple structure and quietness.

[0005] The purpose of the utility model is achieved in this way:

[0006] A silent wheel body of an abdominal wheel comprises a wheel body, a rotating shaft is passed through the middle of the wheel body, the rotating shaft and the wheel body are rotatably connected, a spring is arranged between the rotating shaft and the wheel body, the spring is located inside the wheel body, one end of the spring is fixed on the wheel body, and the other end of the spring is fixed on the rotating shaft; the spring is formed by a metal wire being wound transversely, and the spring coil of the spring is suspended between the wheel body and the rotating shaft; a sleeve is arranged on the inner side of the wheel body, and the sleeve extends into one end of the spring;

[0007] There is a gap between the spring and the sleeve, and the wheel body rotates so that the spring contracts inward, and the spring can be pressed against the outer wall of the sleeve after deformation; or there is no gap between the spring and the sleeve, and the spring presses against the outer side of the sleeve;

[0008] The sleeve is provided with a plurality of longitudinal notches. Under the action of the longitudinal notches, the sleeve has elasticity and can be deformed inwards.

[0009] The width of the longitudinal notch is greater than the outer diameter of the spring wire, and the wire connecting the wheel body can be inserted into the longitudinal notch.

[0010] The end of the sleeve is provided with a rounded corner.

[0011] The first spring coil and / or the second spring coil may rest against the sleeve, while the remaining spring coils are not in contact with the sleeve.

[0012] The diameter of the sleeve increases continuously from the outside to the inside.

[0013] The first spring coil on one side of the sleeve has the smallest diameter, and the spring coils farther away from the sleeve have larger diameters.

[0014] The diameter of the spring coils at both ends of the spring is small, and the diameter of the spring coils closer to the middle of the spring is larger.

[0015] The wheel body includes a first side cover, a fixing position is arranged on the inner side of the first side cover, and a fastener fixes one end of the spring on the fixing position; the rotating shaft passes through the first side cover, and the fastener fixes the other end of the spring on the rotating shaft; the rotating shaft, the first side cover and the spring form a whole under the fixation of the fastener.

[0016] The wheel body comprises a main body, which is composed of an integrally formed second side cover and a cylinder body, and the main body and the first side cover are fixed to form the wheel body; a cylindrical non-slip soft rubber is arranged on the outer side of the cylinder body.

[0017] There is a gap between the spring coils, and the spring coils are coated with lubricating oil.

[0018] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0019] 1. The utility model solves the problem of silence by suspending the spring between the rotating shaft and the wheel body, so that the deformation of the spring during rotation will not collide with other parts. In order to make the spring more stable, the spring needs to be limited by a sleeve, and the spring directly rests on the sleeve or rests on the sleeve after deformation; the two ends of the spring are fixed by fasteners, and the sleeve is limited to limit the spring in multiple positions, thereby ensuring the structural stability of the spring in the static state and the deformed state, and the suspended spring will not deform excessively and produce a rattling noise due to impact. The sleeve is integrally formed on the side cover, and no additional components are required. The structure is simpler, which helps to reduce the manufacturer's manufacturing cost.

[0020] 2. The sleeve of the utility model is provided with a plurality of longitudinal notches. Under the action of the longitudinal notches, the sleeve has elasticity and can be deformed inwards. When the spring coil of the spring abuts against the sleeve, the sleeve can be deformed adaptively, which is conducive to tightening the spring coil.

[0021] 3. The width of the longitudinal notch of the utility model is greater than the outer diameter of the spring wire, and the wire of the connecting wheel body can be inserted into the longitudinal notch. By limiting the wire part of the connecting wheel body in the longitudinal notch, the spring is limited, and the fixed end of the spring is more stable. The stably fixed spring can better play a resetting role and is not easy to be damaged.

[0022] 4. The first spring coil and / or the second spring coil of the utility model can be against the sleeve, and the remaining spring coils do not contact the sleeve. In order to avoid excessive restriction of the spring, only 1-2 spring coils need to be limited by the sleeve, so that the spring can play a better reset effect. Preferably, the sleeve has a continuously changing diameter from the outside to the inside, and the side wall of the sleeve is inclined, so as to ensure that only the first spring coil will be against the sleeve.

[0023] 5. There is a gap between the spring coils of the utility model, through which the noise generated by the friction between the spring coils during the spring deformation process is avoided. In addition, the spring coils are coated with lubricating oil, which effectively avoids product noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the utility model;

[0025] Figure 2 This is the second internal structure of the utility model;

[0026] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at point A;

[0027] Figure 4 yes Figure 2 A schematic diagram of the enlarged structure at B;

[0028] Figure 5 It is a partial structural schematic diagram of the utility model;

[0029] Figure 6 yes Figure 5 A schematic diagram of the enlarged structure at C;

[0030] Figure 7 It is a schematic diagram of the explosion structure of the utility model;

[0031] Figure 8 It is a structural schematic diagram of the spring of the utility model;

[0032] Fig. 9 It is a structural schematic diagram of the first side cover of the utility model;

[0033] Fig.10 This is one of the schematic diagrams of the use state of the utility model;

[0034] Fig.11 This is the second schematic diagram of the use state of the utility model.

[0035] In the figure: 1-wheel body; 11-main body; 111-second side cover; 112-cylinder body; 12-first side cover; 121-fixing position; 122-sleeve; 1221-longitudinal notch; 19-anti-slip soft rubber; 2-rotating shaft; 29-bearing; 3-spring; 31-spring fixing end; 5-elbow support plate; 6-handle; 7-wheel frame; 9-screw. DETAILED DESCRIPTION

[0036] The present invention will be further described below with reference to the accompanying drawings. Figure 1-11 As shown:

[0037] A silent wheel body of an abdominal wheel, comprising a wheel body 1, a rotating shaft 2 is provided in the middle of the wheel body 1, the rotating shaft 2 and the wheel body 1 are connected in rotation, preferably, a bearing 29 is placed between the rotating shaft and the wheel body, a spring 3 is provided between the rotating shaft 2 and the wheel body 1, the spring 3 is located inside the wheel body, one end of the spring is fixed on the wheel body, and the other end of the spring is fixed on the rotating shaft; the spring is formed by a metal wire being wound horizontally, and the spring coil of the spring is suspended between the wheel body 1 and the rotating shaft 2; a sleeve 122 is provided on the inner side of the wheel body 1, and the sleeve 122 extends into one end of the spring 3; there is a gap between the spring 3 and the sleeve 122, the wheel body rotates so that the spring shrinks inward, and the spring can be pressed against the outer wall of the sleeve after deformation; or, there is no gap between the spring and the sleeve, and the spring is pressed against the outer side of the sleeve. Both schemes are acceptable. As a preference, during actual installation, there is a gap between the spring and the sleeve, and the spring must have a certain size error due to the spring machine. Setting the gap can make the sleeve more convenient to install and better adaptable. During use, the spring is deformed and retracted to abut against the sleeve. During use, the two ends of the spring are locked by fasteners, and the middle of the spring is positioned by the sleeve 122. The spring 3 is limited at multiple points, and the spring has strong stability. During the rotation process, the suspended spring will not be excessively twisted or hit laterally, so it will not make a rattling noise.

[0038] The sleeve 122 is provided with a plurality of longitudinal notches 1221. Under the action of the longitudinal notches 1221, the sleeve 122 has elasticity and can be deformed inward. By allowing the sleeve 122 to have elasticity, the spring coils of the spring can more effectively abut against the outer wall of the sleeve, and the sleeve 122 can adaptively change its outer diameter, thereby achieving better adaptability. Preferably, the width of the longitudinal notches is greater than the outer diameter of the spring wire, such as Figure 2 and Figure 3As shown, the wire part of the connecting wheel body can be inserted into the longitudinal notch 1221. By limiting the wire part of the connecting wheel body in the longitudinal notch 1221, the spring 3 is limited, the fixed end of the spring is more stable, and the stably fixed spring 3 can play a better role and is not easy to be damaged.

[0039] Preferably, the sleeve 122 is not in contact with the shaft 2, and there is a gap between the sleeve 122 and the shaft 2 for the sleeve to shrink inward. The end of the sleeve 122 is provided with a rounded corner.

[0040] The first spring coil and / or the second spring coil can be against the sleeve 122, and the remaining spring coils do not contact the sleeve. Only 1-2 spring coils at the end are limited, which does not affect the deformation of the remaining spring coils and can better exert the effect of the spring. Preferably, only the first spring coil at the end needs to be limited. By setting the following structure, the sleeve can limit only one spring coil: a. The sleeve is set to form an inclined surface, and the diameter of the sleeve increases continuously from the outside to the inside. b. The diameter of the first spring coil on one side of the sleeve is the smallest, and the diameter of the spring coil farther away from the sleeve is larger; or, the diameter of the spring coils at both ends of the spring is small, and the diameter of the spring coil closer to the middle of the spring is larger.

[0041] By setting the spring 3 so that the diameter of the middle spring coil is large and the diameter of the spring coils on both sides is small, the diameter of the middle spring coil is increased, so that the spring can have a larger deformation range, so that the abdominal wheel can rotate more circles.

[0042] The wheel body 1 includes a first side cover 12, and a fixing position 121 is provided on the inner side of the first side cover 12. A fastener fixes one end of the spring 3 to the fixing position 121. The rotating shaft 2 passes through the first side cover 12, and the fastener fixes the other end of the spring 3 to the rotating shaft 2. The rotating shaft 2, the first side cover 12 and the spring 3 are fixed to form a whole under the fastening of the fastener. After forming the whole, it can be fixed to the main body 11 of the wheel body to complete the installation. The overall assembly process is simple, which improves the assembly efficiency. There is no need to fix the spring in the small space of the wheel body by fasteners. The fasteners can be common components such as screws 9, bolts, rivets, etc.

[0043] The wheel body 1 comprises a main body 11, which is composed of an integrally formed second side cover 111 and a cylinder 112. The main body 11 and the first side cover 12 are fixed to form the wheel body 1; a cylindrical non-slip soft rubber 19 is arranged on the outer side of the cylinder 112. The main body 11 can also be formed by the second side cover and the cylinder being fixed to each other, and the integral molding cost is lower.

[0044] There is a gap between the spring coils, and lubricating oil is applied to the spring coils. This structure reduces the friction noise between the spring coils.

[0045] like Figure 10-11As shown, the complete abdominal wheel includes an elbow support plate 5; a handle 6 is arranged in front of the elbow support plate 5, at least one wheel frame 7 is arranged below the elbow support plate 5, and the wheel body 1 is rotatably arranged on the wheel frame 7.

[0046] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A silent wheel body of an abdominal wheel, comprising a wheel body (1), a rotating shaft (2) passing through the middle of the wheel body (1), the rotating shaft (2) and the wheel body (1) being rotatably connected, a spring (3) being arranged between the rotating shaft (2) and the wheel body (1), the spring being located inside the wheel body, one end of the spring being fixed on the wheel body, and the other end of the spring being fixed on the rotating shaft; characterized in that: The spring (3) is formed by a metal wire that is wound transversely, and the spring coil of the spring is suspended between the wheel body and the rotating shaft; a sleeve (122) is arranged on the inner side of the wheel body (1), and the sleeve (122) extends into one end of the spring; There is a gap between the spring and the sleeve, and the wheel body rotates so that the spring contracts inward, and the spring can be pressed against the outer wall of the sleeve after deformation; or there is no gap between the spring and the sleeve, and the spring presses against the outer side of the sleeve; The sleeve (122) is provided with a plurality of longitudinal notches (1221). Under the action of the longitudinal notches (1221), the sleeve (122) has elasticity and can be deformed inwards.

2. The silent wheel body of the abdominal wheel according to claim 1 is characterized in that: The width of the longitudinal notch is greater than the outer diameter of the spring wire, and the wire connecting the wheel body can be inserted into the longitudinal notch.

3. The silent wheel body of the abdominal wheel according to claim 2 is characterized in that: The end of the sleeve (122) is provided with a rounded corner.

4. The silent wheel body of the abdominal wheel according to claim 1, 2 or 3, characterized in that: The first spring coil and / or the second spring coil may rest against the sleeve, while the remaining spring coils are not in contact with the sleeve.

5. The silent wheel body of the abdominal wheel according to claim 4 is characterized in that: The diameter of the sleeve increases continuously from the outside to the inside.

6. The silent wheel body of the abdominal wheel according to claim 4, characterized in that: The first spring coil on one side of the sleeve has the smallest diameter, and the spring coils farther away from the sleeve have larger diameters.

7. The silent wheel body of the abdominal wheel according to claim 4, characterized in that: The diameter of the spring coils at both ends of the spring is small, and the diameter of the spring coils closer to the middle of the spring is larger.

8. The silent wheel body of the abdominal wheel according to claim 1, 2, 3, 5, 6 or 7, characterized in that: The wheel body (1) comprises a first side cover (12), a fixing position (121) is arranged on the inner side of the first side cover (12), and a fastener fixes one end of a spring on the fixing position (121); the rotating shaft (2) passes through the first side cover (12), and the fastener fixes the other end of the spring on the rotating shaft (2); the rotating shaft (2), the first side cover (12) and the spring 930 are fixed to form a whole by the fastener.

9. The silent wheel body of the abdominal wheel according to claim 8, characterized in that: The wheel body (1) comprises a main body (11), the main body (11) being composed of an integrally formed second side cover (111) and a cylinder (112), the main body (11) and the first side cover (12) being fixed to form the wheel body; a cylindrical anti-slip soft rubber (19) is arranged on the outside of the cylinder (112).

10. The silent wheel body of the abdominal wheel according to claim 1, 2, 3, 5, 6, 7 or 9, characterized in that: There is a gap between the spring coils, and the spring coils are coated with lubricating oil.

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