A kind of armrest structure for abdominal wheel

Abstract

The present invention discloses an armrest structure for an abdominal wheel, which relates to the field of fitness equipment. The armrest structure includes a central tube, and a clutch mechanism. The central tube is arranged inside the armrest structure, and the clutch mechanism is provided on the central tube. The armrest structure and the central tube are independent of each other, and the central tube rotates coaxially relative to the armrest structure through the clutch mechanism. In this way, when a user holds the armrest structure and pushes and pulls the rebound abdominal wheel, when the central tube and the armrest structure are in an independent state, the spring coil between the wheel and the central axis will not be deformed, and thus the auxiliary rebound effect cannot be achieved; and when the central tube and the armrest structure cooperate to limit, the auxiliary rebound effect can be achieved; in other words, the user can turn on and off the rebound function of the abdominal wheel by operating the clutch mechanism.

Description

Technical Field

[0001] The invention relates to the field of fitness equipment, and in particular to an armrest structure for an abdominal wheel. Background Art

[0002] The ab wheel is a common fitness equipment. The traditional ab wheel is mainly composed of a wheel, a central axis running through the wheel, and armrests arranged on both sides of the wheel and connected to the central axis. The user can adopt a suitable body position and hold the armrests on both sides of the wheel to push the wheel to achieve the purpose of fitness.

[0003] With the continuous replacement of ab wheel products, rebound ab wheels have appeared on the market. For example, a patent document with the certificate number TWM545614U from Taiwan, China, discloses a rebound ab wheel. This ab wheel has a accommodating space inside the wheel and a spring coil between the accommodating space and the central axis. With this design, after the ab wheel is pushed forward, it can have the auxiliary rebound force so that it can be pulled back more easily. This design provides convenience for users who are physically exhausted or need auxiliary rebound for other reasons.

[0004] However, it should be noted that the physical fitness of exercisers will gradually improve through fitness. That is to say, after the user has used the rebound abdominal wheel for a certain period of time, he or she may no longer need the auxiliary function of rebound, while the user needs to continue to exercise effectively. The existing rebound abdominal wheel obviously cannot meet the user's need to flexibly adjust the fitness plan, that is, to switch between the abdominal wheel with rebound function and the one without rebound function. Therefore, the user has to buy an abdominal wheel without rebound function separately, which increases the cost of purchasing equipment for the user. Summary of the invention

[0005] In order to solve the above technical problems, an object of the present invention is to provide an armrest structure for a rebound-type abdominal wheel and capable of realizing the rebound function switch of the abdominal wheel.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an armrest structure for an abdominal wheel, comprising an armrest structure, a center tube and a clutch mechanism, wherein the armrest structure has a center tube, and the center tube is provided with a clutch mechanism, and is characterized in that the armrest structure and the center tube are independent of each other, and the center tube rotates coaxially relative to the armrest structure through the clutch mechanism.

[0007] By adopting the above technical solution, the center tube is fixedly connected to the center axis of the rebound abdominal wheel. Although the armrest structure is sleeved on the center tube, the two are independent of each other. That is, if the center tube is not limited by the clutch mechanism and the armrest structure, the rotation of the center tube is not constrained by the armrest structure. When the user holds the armrest structure and pushes and pulls the rebound abdominal wheel, the armrest structure cannot constrain the center axis through the center tube to make it stationary relative to the wheel. Only when the wheel rotates to one side and the center axis is stationary relative to it or rotates in the opposite direction, the spring coil between the two will be deformed to achieve the auxiliary rebound effect. When the center tube and the armrest structure are independent of each other and not limited, In this state, since the armrest structure cannot constrain the central axis through the central tube, the rotation direction of the central axis and the wheel will be consistent when the abdominal wheel is pushed or pulled, and the spring coil between the two will not be deformed, and the auxiliary rebound effect cannot be achieved; when the central tube and the armrest structure cooperate to limit, that is, the central tube rotates coaxially relative to the armrest structure through the clutch mechanism, the central tube will be constrained by the armrest structure, and then the armrest structure can constrain the central axis through the central tube, and the central axis will be stationary relative to the wheel when the user pushes or pulls the abdominal wheel, thereby achieving the auxiliary rebound effect; in other words, the user can turn on and off the rebound function of the abdominal wheel by operating the clutch mechanism.

[0008] Preferably, the clutch mechanism comprises a first limiting groove, a second limiting groove and a limiting block, and the limiting block cooperates with the first limiting groove and the second limiting groove.

[0009] By adopting the above technical solution, the first limit groove is opened on one side of the handrail structure, and the second limit groove is opened on the center tube. When the two correspond to each other, the limit block cooperates with the first limit groove and the second limit groove for limiting at the same time, and the clutch mechanism realizes the cooperation and limiting of the center tube and the handrail structure.

[0010] Preferably, a slope is provided on the side of the first limiting groove.

[0011] By adopting the above technical solution, the limiting block can cooperate with the slope and slide into the first limiting groove to cooperate therewith more conveniently.

[0012] Preferably, the limit block is provided with a return spring, and the return spring is arranged on one side of the limit block.

[0013] By adopting the above technical solution, the limit block can be automatically reset under the action of the reset spring.

[0014] Preferably, the clutch mechanism comprises a third limiting groove, and the third limiting groove and the first limiting groove are located in the same vertical plane.

[0015] By adopting the above technical solution, when the clutch mechanism is in the unlocked state, the limit block can be placed in the third limit groove.

[0016] Preferably, the clutch mechanism comprises a limiting structure, a positioning hole and a positioning pin, and the positioning pin cooperates with the positioning hole under the action of the limiting structure.

[0017] By adopting the above technical solution, a positioning hole is opened on the center tube, and the positioning pin is fixedly connected to the handrail structure. When the positioning pin is squeezed and moved toward the center tube by the limiting structure, the positioning pin can be inserted into the positioning hole, and then the clutch mechanism can realize the coordination and limitation of the center tube and the handrail structure.

[0018] Preferably, a fixing plate is provided at the end of the armrest structure, and an adjusting dial is provided between the fixing plate and the armrest structure.

[0019] By adopting the above technical solution, the adjusting dial can be controllably connected to the positioning pin, and the user can conveniently control the positioning pin by operating the adjusting dial.

[0020] Preferably, the adjusting dial is provided with saw teeth, and the saw teeth are arranged on the outer surface of the adjusting dial.

[0021] By adopting the above technical solution, the serrated ring is arranged on the outer surface of the adjusting dial, and the serrated adjusting dial has greater friction when the user grasps it, so that the user grasps it more stably and operates it more conveniently.

[0022] Preferably, the central tube is provided with a limiting component, and the central tube is limited by cooperating with the handrail structure through the limiting component.

[0023] By adopting the above technical solution, the limiting assembly can limit the central tube so that it cannot move horizontally in the handrail structure.

[0024] Preferably, the limiting component is a clamp.

[0025] By adopting the above technical solution, clamps can be arranged at both ends of the central tube to limit the central tube so that it cannot move horizontally in the handrail structure.

[0026] Compared with the prior art, the advantages of the present invention are: the armrest can be used for a rebound-type abdominal wheel, and by operating its clutch mechanism, the center tube and the armrest structure can be coordinated and limited or independent of each other. When the center tube and the armrest structure are independent of each other, the rebound function of the rebound-type abdominal wheel is unavailable, that is, by controlling the coordination and limitation of the center tube and the armrest structure or their independence, the abdominal wheel with and without the rebound function can be switched. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the explosion structure of Example 1 of the present invention;

[0028] Figure 2This is a schematic plan view of the use state of Example 1 of the present invention;

[0029] Figure 3 This is a schematic diagram of the explosion structure of Example 2 of the present invention;

[0030] Figure 4 Schematic cross-sectional view of an adjustment dial according to Embodiment 2 of the present invention;

[0031] In the figure: 1. handrail structure; 110. clamp; 111. fixing screw; 120. first limiting groove; 121. ramp; 130. third limiting groove; 140. end cap; 150. positioning pin; 151. fixing plate; 152. spring; 153. adjusting dial; 154. limiting structure; 155. sawtooth; 156. screw; 157. positioning pin fixing seat; 2. center tube; 210. second limiting groove; 220. first fixing hole; 221. second fixing hole; 222. third fixing hole; 223. clamp seat; 224. first clamp; 225. second clamp; 226. nut; 230. reset spring; 240. limiting block; 250. positioning hole. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below with reference to the accompanying drawings.

[0033] Example 1

[0034] A handrail structure, the main body of which is a handrail structure 1, wherein a central tube 2 is arranged inside the handrail structure 1, and the central tube 2 and the handrail structure 1 are independent of each other, that is, the central tube 2 can rotate relative to the handrail structure 1 inside the handrail structure 1.

[0035] The central tube 2 is provided with a limiting component, and the limiting component is specifically a clamp 110, and the clamp 110 is sleeved on both ends of the central tube 2 and is located in the handrail structure 1. Figure 1 , Figure 2 As shown, the central tube 2 is limited by the clamp 110 and the handrail structure 1. Under the action of the clamp 110, the central tube 2 can only rotate in the handrail structure 1 but cannot move horizontally.

[0036] In actual application, one end of the central tube 2 can be connected to the central axis of the rebound abdominal wheel, so that the armrest structure 1 is connected to the rebound abdominal wheel through the central tube 2; specifically, a first fixing hole 220 is opened at one end of the central tube 2, and the central axis is provided with a bolt which can correspond to the first fixing hole 220. The central tube 2 is connected to the central axis through the cooperation of the first fixing hole 220 and the bolt. This connection state is a detachable connection, so that the armrest structure 1 can be separated from the rebound abdominal wheel; this is only a preferred embodiment, and the central tube 2 can also be connected and fixed to the central axis by welding or other methods.

[0037] The central tube 2 is provided with a clutch mechanism, and the central tube 2 cooperates with the handrail structure 1 through the clutch mechanism; in this embodiment, the clutch mechanism includes a first limiting groove 120, a second limiting groove 210, a third limiting groove 130 and a limiting block 240.

[0038] The first limiting groove 120 is provided at one end of the handrail structure 1. Figure 1 As shown;

[0039] The second limiting groove 210 is provided at one end of the central tube 2. Figure 1 As shown;

[0040] The first limiting groove 120 and the second limiting groove 210 are on the same side. When the two are corresponding, the limiting block 240 is inserted into the two at the same time, so that the central tube 2 and the handrail structure 1 can be locked correspondingly;

[0041] Specifically, the limit block 240 is arranged inside the end cap 140, and the end cap 140 is sleeved on one end of the handrail structure 1. Figure 1 , Figure 2 As shown, when the end cap 140 is fitted with the handrail structure 1, the limit block 240 arranged on the inner side thereof can be inserted into the first limit groove 120 and the second limit groove 210; the end cap 140 is separable from one end of the handrail structure 1, and when the two are separated, the limit block 240 is separated from the first limit groove 120 and the second limit groove 210, that is, the handrail structure 1 and the center tube 2 are unlocked, and the rotation of the center tube 2 is not constrained by the handrail structure 1.

[0042] A slope 121 is provided on the side of the first limiting groove 120 , and the first limiting groove 120 is located on the downhill side of the slope 121 , so that the limiting block 240 can slide into the first limiting groove 120 along the slope 121 to cooperate with it for insertion, making insertion more convenient.

[0043] A third limiting groove 130 is provided at one end of the handrail structure 1. The third limiting groove 130 and the first limiting groove 120 are on the same side of the handrail structure 1. The third limiting groove 130 is specifically located on the uphill side of the slope 121, that is, when the handrail structure 1 is provided with the first limiting groove 120 facing upward, the third limiting groove 130 is higher than the first limiting groove 120. Figure 1 shown.

[0044] The limit block 240 can be inserted in cooperation with the third limit groove. Since the handrail structure 1 is provided with the first limit groove 120 facing upward on one side, the third limit groove 130 is horizontally higher than the first limit groove 120, and naturally also horizontally higher than the second limit groove 210. Therefore, when the limit block 240 is inserted in cooperation with the third limit groove 130, the limit block 240 will not cooperate with the second limit groove 210 for limiting, that is, in this state the handrail structure 1 and the center tube 2 are in an unlocked state. In other words, the third limit groove 130 can be used to cooperate with the limit block 240 for limiting when the handrail structure 1 and the center tube 2 are in an unlocked state.

[0045] The limit block 240 is provided with a return spring 230, which is specifically arranged in the central tube 2 and cooperates with the limit block 240 to realize rebound reset. When the end cap 140 is pulled outward and separated from the handrail structure 1, the return spring 230 will deform. When the user releases the end cap 140, the end cap 140 will rebound to a state of being fitted with the handrail structure 1 under the action of the return spring 230. In this state, the limit block 240 can be in contact with the first limit groove 120 and the second limit groove 21. 0 cooperates with the limit to realize the locking of the center tube 2 and the handrail structure 1; after the end cap 140 rebounds, the limit block 240 can also be inserted in cooperation with the third limit groove 130, so that the center tube 2 and the handrail structure 1 are in the unlocked state, and the limit block 240 cooperates with the third limit groove 130 to limit, and the limit block 240 will not slide into the first limit groove 120 along the slope 121 under the action of the return spring 230, that is, the third limit groove 130 plays the role of placing the limit block 240 when the clutch mechanism is in the unlocked state.

[0046] It should be noted that when the limiting block 240 is inserted into the third limiting groove 130, although the end cap 140 is a certain distance away from the handrail structure 1, it still covers one end of the handrail structure 1, and the first limiting groove 120 and the like will not be exposed.

[0047] The return spring 230 is disposed in the central tube 2, and the specific connection method between the return spring 230 and the central tube 2 is as follows:

[0048] The return spring 230 is placed in the central tube 2. The end of the return spring 230 close to the end cap 140 is provided with a first clamp 224, and the other end of the return spring 230 is provided with a second clamp 225. Figure 1 , Figure 2 As shown;

[0049] The side of the first clamping member 224 is provided with a screw hole. Figure 1 As shown, the first clamping member 224 is disposed in the central tube 2, and through the screw hole corresponding to the third fixing hole 222, a screw can be screwed in to fix the position of the first clamping member 224 in the central tube 2;

[0050] A screw is disposed at one end of the end cap 140. The screw and the limit block 240 are on the same side of the end cap 140. The screw passes through the first clamp 224, the return spring 230 and the second clamp 225. A nut 226 is disposed on one side of the second clamp 225 to tighten with the screw to achieve matching and limiting. Figure 1 , Figure 2 As shown;

[0051] In this way, when the user pulls the end cap 140 outward to separate it from the handrail structure 1, the screw will move in the same direction, and then under the limiting influence of the nut 226, the second clamp 225 will move to the same side of the end cap 140. Since the first clamp 224 and the center tube 2 are fixed, the displacement of the second clamp 225 to the same side of the end cap 140 will cause the reset spring 230 to be squeezed, thereby forming a tensioning force; at this time, the user loosens the end cap 140, and the tensioning force of the reset spring 230 will act on the second clamp 225 to make it rebound in the opposite direction. The rebound of the second clamp 225 drives the nut 226, thereby realizing the reset and rebound of the end cap 140.

[0052] The central tube 2 is provided with a clamp seat 223, and the side of the clamp seat 223 is provided with a screw hole. Figure 1 As shown, the screw hole corresponds to the second fixing hole 221, and a screw can be screwed in to fix the position of the clamp seat 223 in the central tube 2;

[0053] The clamp seat 223 is located on one side of the second clamp 225, and a groove is provided on the side thereof. The second clamp 225 can cooperate with the clamp seat 223 to limit the position. Figure 1 , Figure 2 As shown; the card seat 223 plays a role in limiting the second card 225 on one side to prevent it from rebounding excessively;

[0054] The groove of the card seat 223 is provided with a slope, such as Figure 1 , Figure 2 As shown; this makes it easy for the second clamp 225 to cooperate with it to limit the position.

[0055] In actual application, the center tube 2 is connected to the center axis of the rebound-type abdominal wheel, and the center tube 2 and the center axis are relatively fixed. The handrail structure 1 is connected to the rebound-type abdominal wheel through the center tube 2. In the default state, the center tube 2 and the handrail structure 1 are correspondingly locked through the clutch mechanism. At this time, the user pushes and pulls the abdominal wheel, and the handrail structure 1 and the center axis are also relatively fixed. Then, when the abdominal wheel is pushed or pulled, the wheel rotates relative to the center axis, and the spring roll therein will be deformed, thereby realizing the auxiliary rebound function; when the handrail structure 1 and the center tube 2 are unlocked through the clutch mechanism, the two The two are independent of each other, and the central tube 2 can rotate in the armrest structure 1. At this time, when the user pushes and pulls the abdominal wheel, the rotation of the central tube 2 is not constrained by the armrest structure 1, that is, when pushing and pulling the abdominal wheel, the central axis and the armrest structure 1 are in neutral, that is to say, the central axis is not constrained by the armrest structure 1, and the wheel will also drive the central axis to rotate in the same direction when rotating. If the two rotate in the same direction, the spring coil between the central axis and the wheel will not be deformed, thereby closing the auxiliary rebound function. In this embodiment, the user locks or unlocks the clutch mechanism by operating the end cap 140.

[0056] Example 2

[0057] This embodiment is different from Embodiment 1 in that, in this embodiment, the handrail structure 1 and the central tube 2 are unlocked or locked via a clutch mechanism, and the clutch mechanism includes a positioning hole 250 and a positioning pin 150 .

[0058] The positioning holes 250 are specifically opened on both sides of the central tube 2. Figure 3 , Figure 4 As shown;

[0059] The positioning pin 150 is provided with a fixing plate 151, and a positioning pin fixing seat 157 is provided on the fixing plate 151. The positioning pin 150 is specifically arranged in the positioning pin fixing seat 157. Figure 1 As shown;

[0060] A spring 152 is disposed in the positioning pin fixing seat 157. The spring 152 is located between the inner wall of the positioning pin fixing seat 157 and the positioning pin 150, and can enable the positioning pin 150 to return to its original position.

[0061] The fixing plate 151 is fixed to one end of the handrail structure 1 by screws. Figure 3 As shown, the positions of the positioning pin 150 and the handrail structure 1 are fixed;

[0062] An adjusting dial 153 is provided between the fixing plate 151 and the handrail structure 1. Figure 3 As shown, the adjusting dial 153 can rotate relative to the fixed disk 151;

[0063] The side of the adjusting dial 153 close to the fixed plate 151 is a groove surface, and a limiting structure 154 is arranged in the groove surface. The space formed by the limiting structure 154 is as shown in FIG. Figure 4 As shown in the figure, the distance between the upper and lower ends in the space is longer than the distance between the left and right ends; the positioning pin fixing seat 157 is embedded in the space formed by the limiting structure 154, and the positioning pin 150 cooperates with the inner wall of the limiting structure 154.

[0064] In actual application, the user rotates the adjustment dial 153 so that the positioning pin 150 in the positioning pin fixing seat 157 matches with the narrow portion of the limiting structure 154, and the positioning pin 150 is squeezed by the limiting structure 154 and moves toward the center of the positioning pin fixing seat 157, so that the positioning pin 150 can be inserted into the positioning hole 250 on the center tube 2. Figure 4 As shown, in this state, the armrest structure 1 and the center tube 2 are locked together; when the adjusting dial 153 is rotated, the wide-spaced portion of the limiting structure 154 corresponds to the locating pin 150, and the locating pin 150 will rebound outward under the action of the spring 152, so that the locating pin 150 is separated from the locating hole 250. In this state, the armrest structure 1 and the center tube 2 are unlocked, the two are independent of each other, and the center tube 2 can rotate in the armrest structure 1.

[0065] It should be noted that the central tube 2 passes through the center of the fixing plate 151 and is arranged in the handrail structure 1. The center position of the positioning pin fixing seat 157 corresponds to the fixing plate 151, that is, the central tube 2 passes through the center of the positioning pin fixing seat 157. Figure 3 As shown; at the same time, the center tube 2 is horizontally limited in the handrail structure 1 by the limiting assembly, and its lateral position is fixed, so it can ensure that the position of the positioning hole 250 of the center tube 2 corresponds to the position of the positioning pin 150, and the center displacement of the positioning pin 150 to the positioning pin fixing seat 157 can cooperate with the positioning hole 250 for limiting.

[0066] The limiting structure 154 sets a limit on the rotation track of the positioning pin 150. When the positioning pin 150 rotates to a certain position, it will be blocked and cannot continue to rotate in this direction. Figure 4 This setting limits the rotation range of the adjustment dial 153, and at the same time Figure 4 As shown in the figure, the blocked position is the narrowest part of the space formed by the limiting structure 154. If the locating pin 150 rotates to either side, the locating pin 150 will rebound outward. However, one side of the locating pin 150 is blocked by the limiting structure 154, which reduces the probability of the locating pin 150 rotating, thereby reducing the probability of the clutch mechanism being accidentally unlocked due to misoperation. Conversely, in the unlocked state, the probability of the clutch mechanism being accidentally locked is also reduced.

[0067] The outer surface of the adjusting dial 153 is provided with saw teeth 155 , and the provision of the saw teeth 155 can increase the friction force of the outer surface of the adjusting dial 155 , and can make it more convenient for the user to grasp, thereby facilitating the operation.

[0068] In this embodiment, the limiting component is a fixing screw 111, which is inserted from one end of the handrail structure 1 and connected to one end of the central tube 2. Figure 3 As shown; it should be noted that the fixing screw 111 can achieve horizontal limitation of the center tube 2 through a nut, etc., but its screw body needs to have a smooth surface to cooperate with the center tube 2 to ensure that the center tube 2 can rotate within the handrail structure 1.

[0069] Although the preferred embodiments of the present invention are described in detail above, it should be clearly understood that various modifications and variations are possible for those skilled in the art. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An armrest structure for an abdominal wheel, comprising an armrest structure (1), a central tube (2) and a clutch mechanism, wherein the armrest structure (1) has a central tube (2), the central tube (2) is connected to the central axis of the abdominal wheel, the central tube (2) is relatively fixed to the central axis, and when the abdominal wheel is pushed or pulled, the wheel rotates relative to the central axis to achieve rebound; the central tube (2) is provided with a clutch mechanism, characterized in that: The handrail structure (1) and the center tube (2) are independent of each other, and the clutch mechanism comprises a first limiting groove (120), a second limiting groove (210) and a limiting block (240); the first limiting groove (120) is arranged at one end of the handrail structure (1), and the second limiting groove (210) is arranged at one end of the center tube (2); the limiting block (240) cooperates with the first limiting groove (120) and the second limiting groove (210); the center tube (2) rotates coaxially relative to the handrail structure (1) through the clutch mechanism to achieve an auxiliary rebound effect.

2. The armrest structure for the abdominal wheel according to claim 1, characterized in that: A slope (121) is provided on the side of the first limiting groove (120).

3. The armrest structure for the abdominal wheel according to claim 1, characterized in that: The limit block (240) is provided with a return spring (230), and the return spring (230) is arranged on one side of the limit block (240).

4. The armrest structure for the abdominal wheel according to claim 1, characterized in that: The clutch mechanism comprises a third limiting groove (130), and the third limiting groove (130) and the first limiting groove (120) are located in the same vertical plane.

5. An armrest structure for an abdominal wheel, comprising an armrest structure (1), a central tube (2) and a clutch mechanism, wherein the armrest structure (1) has a central tube (2), the central tube (2) is connected to the central axis of the abdominal wheel, the central tube (2) is relatively fixed to the central axis, and when the abdominal wheel is pushed or pulled, the wheel rotates relative to the central axis to achieve rebound; the central tube (2) is provided with a clutch mechanism, characterized in that: The handrail structure (1) and the center tube (2) are independent of each other. The clutch mechanism comprises a limiting structure (154), a positioning hole (250) and a positioning pin (150). The positioning hole (250) is provided on both sides of the center tube (2). The positioning pin (150) cooperates with the positioning hole (250) under the action of the limiting structure (154), so that the handrail structure (1) and the center tube (2) can be locked together to achieve an auxiliary rebound effect.

6. The armrest structure for the abdominal wheel according to claim 5, characterized in that: A fixing plate (151) is provided at the end of the handrail structure (1), and an adjusting dial (153) is provided between the fixing plate (151) and the handrail structure (1).

7. The armrest structure for the abdominal wheel according to claim 6, characterized in that: The adjusting turntable (153) is provided with saw teeth (155), and the saw teeth (155) are arranged around the outer surface of the adjusting turntable (153).

8. The handrail structure for an ab wheel according to any one of claims 1 to 7, characterized in that: The central tube (2) is provided with a limiting component, and the central tube (2) cooperates with the handrail structure (1) to limit the position through the limiting component.

9. The handrail structure for the abdominal wheel according to claim 8, characterized in that: The limiting component is a clamp (110).

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