Abdominal exercise wheel

Abstract

Disclosed in the present application is an abdominal exercise wheel, comprising handles, a central shaft, a wheel body and an adjustment structure, wherein the handles are connected to the central shaft; the wheel body is rotationally connected to the central shaft; and the adjustment structure comprises a driving assembly and an adjustment assembly. The driving assembly comprises a first driving member, which is in threaded connection with the wheel body and can axially move close to or away from the adjustment assembly; the adjustment assembly comprises a first adjustment member, which is in threaded connection with the central shaft and can axially move close to or away from the driving assembly; and a limiting structure is arranged on the end face of the first driving member close to the adjustment assembly and / or the end face of the first adjustment member close to the driving assembly. The technical solution of the present application can improve the stability during the rotation travel of the abdominal exercise wheel, thereby improving the user experience.

Description

Abdominal wheel TECHNICAL FIELD

[0001] The present application relates to the technical field of abdominal wheel, in particular to an abdominal wheel. BACKGROUND

[0002] The abdominal wheel is a small pusher that can exercise muscles, joints and reduce weight. A common structure is to pass a handle tube through a roller. The user places the knees on the kneepad, holds the two ends of the handle tube with both hands, pushes the abdominal wheel forward until the body is level with the ground, and then recovers to the original position. Multiple reciprocating movements can achieve the exercise effect.

[0003] However, in the related art, most abdominal wheels are difficult to maintain consistent travel during each forward push during exercise, which can easily lead to accidents or incomplete training.

[0004] SUMMARY

[0005] The present application provides an abdominal wheel that can improve the stability of the abdominal wheel's rotation travel and improve the user's experience.

[0006] The present application provides an abdominal wheel, which includes a handle, a middle shaft, a roller body and an adjusting structure. The opposite sides of the middle shaft are connected with the handle. The roller body is rotationally connected with the middle shaft. The adjusting structure includes a driving assembly and an adjusting assembly. The driving assembly and the adjusting assembly are spaced apart in the axial direction of the middle shaft. The driving assembly includes a first driving member. The first driving member is threadedly connected with the roller body and can move in the axial direction towards or away from the adjusting assembly when the roller body rotates. The adjusting assembly includes a first adjusting member. The first adjusting member is threadedly connected with the middle shaft and can move in the axial direction towards or away from the driving assembly during rotation around the middle shaft. The end surface of the first driving member close to the adjusting assembly and / or the end surface of the first adjusting member close to the driving assembly are provided with a limiting structure.

[0007] In one possible implementation, the limiting structure includes a first limiting structure and a second limiting structure. The first limiting structure is arranged on the end surface of the first driving member close to the adjusting assembly. The second limiting structure is arranged on the end surface of the first adjusting member close to the driving assembly. And / or

[0008] The driving assembly further comprises a second driving member which is fixed opposite to the roller body in the circumferential direction and is fixed opposite to the first driving member in the axial direction, the second driving member is capable of rotating around the central shaft under the driving of the roller body and moving in the direction of approaching or moving away from the adjusting assembly under the driving of the first driving member, and an end surface of the second driving member close to the adjusting assembly is provided with a third limiting structure;

[0009] The adjusting assembly further comprises a second adjusting member which is fixed opposite to the central shaft in the circumferential direction and is fixed opposite to the first adjusting member in the axial direction, the second adjusting member is capable of moving relatively in the axial direction under the driving of the first adjusting member, and an end surface of the second adjusting member close to the driving assembly is provided with a fourth limiting structure;

[0010] Wherein, when the spacing between the first adjusting member and the first driving member is adjusted to the minimum, the third limiting structure abuts against the fourth limiting structure.

[0011] In a possible implementation, the first driving member comprises a driving seat and a limiting seat, the limiting seat is installed at one end of the driving seat close to the adjusting assembly, and the limiting seat is provided with the first limiting structure; an end of the second driving member away from the roller body is provided with a first limiting part, the second driving member is nested on the inner side of the driving seat, the limiting seat is fixedly connected with the adjusting seat, and the first limiting part is limited between the driving seat and the limiting seat; and / or

[0012] The first adjusting member comprises an adjusting seat and a limiting member, the adjusting seat is threadedly connected with the central shaft, and the limiting member is provided with the second limiting structure; an end of the second adjusting member away from the fourth limiting structure is provided with a second limiting part, the limiting member is sleeved on the outer side of the second adjusting member, and is fixedly connected with the adjusting seat to limit the second limiting part between the limiting member and the adjusting seat.

[0013] In a possible implementation, the central shaft comprises a shaft body and an assembly seat, the assembly seat is fixed opposite to the shaft body and is provided with a first threaded part, and the first adjusting member is threadedly connected with the first threaded part; and / or

[0014] The roller body comprises a wheel body and a mounting seat, the mounting seat is fixed opposite to the wheel body and is provided with a second threaded part, the first driving member is provided with a third threaded part, and the second threaded part is threadedly connected with the third threaded part.

[0015] In a possible implementation, the adjusting assembly further includes an adjusting knob and a limiting bearing, the limiting bearing is fixed opposite to the middle shaft, the knob is fixed opposite to the limiting bearing in the axial direction and can rotate around the limiting bearing, and the adjusting knob is fixed opposite to the first adjusting piece in the circumferential direction.

[0016] In a possible implementation, the limiting bearing is provided with a first limiting part, the first adjusting piece is provided with a second limiting part, and when the spacing between the first adjusting piece and the first driving piece is adjusted to the maximum, the first limiting part abuts against the second limiting part.

[0017] In a possible implementation, the roller body is provided with a third limiting part, the first driving piece is provided with a fourth limiting part, and in the initial state, the third limiting part abuts against the fourth limiting part.

[0018] In a possible implementation, the driving assembly further includes a first spring, one end of the first spring is connected to the roller body and located at the center of the roller body, and the other end of the first spring is connected to the middle shaft, for driving the roller body to return to the initial state.

[0019] In a possible implementation, the first spring is a ball-cone spring, and the diameters of the two ends of the ball-cone spring are in a ratio of 1:2.

[0020] In a possible implementation, the smaller end of the ball-cone spring is connected to the middle shaft, and the larger end of the ball-cone spring is connected to the roller body.

[0021] In a possible implementation, the first limiting structure includes a second spring and a limiting tongue.

[0022] The opposite ends of the second spring abut against the limiting tongue and the first driving piece, and the second spring is used to drive the limiting tongue to protrude from the end face of the first driving piece.

[0023] The abdominal wheel based on the embodiments of the present application adjusts the spacing between the first adjusting piece and the first driving piece by adjusting the movement of the first adjusting piece in the axial direction of the middle shaft, and then adjusts the number of turns of the roller body. When the user uses the abdominal wheel, the roller body is driven to rotate in the first direction, at this time, the first driving piece is driven to move in the direction close to the adjusting assembly under the roller body, and after moving to the position, the limiting structure forms a safety distance between the two end faces of the first driving piece and the first adjusting piece relatively close to each other, so as to prevent the first driving piece and the first adjusting piece from being pressed and locked when they are relatively close to each other, thereby avoiding the phenomenon that the abdominal wheel suddenly stops and cannot continue to operate in the movement. Moreover, under the limiting action of the limiting structure, the roller body will not rotate after rotating to the predetermined number of turns, thereby improving the stability of the rotation of the abdominal wheel and the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in the drawings without creative labor.

[0025] Fig. 1 is a structural schematic diagram of an abdominal wheel provided by an embodiment of the present application;

[0026] Fig. 2 is a sectional schematic diagram of an abdominal wheel provided by an embodiment of the present application;

[0027] Fig. 3 is a first exploded schematic diagram of an abdominal wheel provided by an embodiment of the present application;

[0028] Fig. 4 is a local enlarged schematic diagram of A in Fig. 3;

[0029] Fig. 5 is a second exploded schematic diagram of an abdominal wheel provided by an embodiment of the present application;

[0030] Fig. 6 is a first exploded schematic diagram of a driving assembly provided by an embodiment of the present application;

[0031] Fig. 7 is a first exploded schematic diagram of an adjusting assembly provided by an embodiment of the present application;

[0032] Fig. 8 is a schematic diagram of a state in which a third limiting structure and a fourth limiting structure abut against each other;

[0033] Fig. 9 is a structural schematic diagram of a second adjusting piece provided by an embodiment of the present application;

[0034] Fig. 10 is a structural schematic diagram of an adjusting seat provided by an embodiment of the present application.

[0035] Explanation of reference numerals:

[0036] 1、ab wheel; 10, handle; 20, central shaft; 21, shaft body; 22, assembly seat; 221, third limiting portion; 23, fixed sleeve shaft; 30, roller body; 31, wheel body; 32, mounting seat; 321, fifth limiting portion; 322, third limiting portion; 40, adjusting structure; 400, driving assembly; 410, first driving piece; 411, first limiting structure; 4111, second spring; 4112, limiting tongue; 4113, fixed seat; 412, driving seat; 413, limiting seat; 414, fourth limiting portion; 420, second driving piece; 421, third limiting structure; 422, first limiting portion; 423, sixth limiting portion; 430, first spring; 500, adjusting assembly; 510, first adjusting piece; 511, second limiting structure; 512, adjusting seat; 513, limiting piece; 514, second limiting portion; 520, second adjusting piece; 521, fourth limiting structure; 522, second limiting portion; 523, fourth limiting portion; 531, adjusting knob; 532, limiting bearing; 5321, first limiting portion.

[0037] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the present application more clear, the following will further describe the embodiments of the present application in connection with the drawings.

[0039] The following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0040] In the description of the present application, it should be understood that the terms "first", "second" and the like are used only for the purpose of description and can not be understood as indicating or implying relative importance. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" means two or more. "And / or", the association between the associated objects, means that there can be three relationships, for example, A and / or B, which can represent the existence of A, the existence of A and B, and the existence of B. The character " / " generally represents the relationship between the front and rear associated objects is "or".

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used in the description herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0042] Referring to FIGS. 1-2, the application provides an abdominal wheel 1, which comprises a handle 10, a middle shaft 20, a roller body 30 and an adjusting structure 40.

[0043] The handle 10 is connected to opposite sides of the middle shaft 20. It can be understood that the handle 10 can include a left handle 10 and a right handle 10 for the user to hold when in use. The roller body 30 is sleeved on the middle shaft 20 and is rotationally connected to the middle shaft 20. In use, the roller body 30 can directly rub against the ground to perform reciprocating motion. The adjusting structure 40 is used to adjust the number of rotations of the roller body 30, so as to adjust the intensity of the user's exercise.

[0044] Referring to FIGS. 3 and 4, the adjusting structure 40 comprises a driving assembly 400 and an adjusting assembly 500, wherein the driving assembly 400 and the adjusting assembly 500 are arranged in an axial direction of the middle shaft 20. The driving assembly 400 comprises a first driving member 410, which is threadedly connected to the roller body 30 and can move in the axial direction towards or away from the adjusting assembly 500 when the roller body 30 rotates. The adjusting assembly 500 comprises a first adjusting member 510, which is threadedly connected to the middle shaft 20 and can move in the axial direction towards or away from the driving assembly 400 when the middle shaft 20 rotates. The end face of the first driving member 410 close to the adjusting assembly 500 is provided with a limiting structure; or the end face of the first adjusting member 510 close to the driving assembly 400 is provided with a limiting structure; or the end face of the first driving member 410 close to the adjusting assembly 500 and the end face of the first adjusting member 510 close to the driving assembly 400 are both provided with limiting structures.

[0045] Specifically, the present application adjusts the distance between the first adjusting member 510 and the first driving member 410 by adjusting the axial movement of the first adjusting member 510, thereby adjusting the number of turns of the roller body 30. When the user uses the abdominal wheel 1 to drive the roller body 30 to rotate in the first direction, the first driving member 410 is driven to move towards the adjusting assembly 500, and after moving to the position, the limiting structure forms a safe distance between the two end faces of the first driving member 410 and the first adjusting member 510, preventing the first driving member 410 and the first adjusting member 510 from being pressed and locked when they are close to each other, thereby avoiding the phenomenon that the abdominal wheel 1 suddenly stops and cannot continue to operate during movement. Moreover, under the limiting action of the limiting structure, the roller body 30 will not rotate after rotating to the predetermined number of turns, thereby improving the stability of the rotation of the abdominal wheel 1 and the user's experience.

[0046] In the scheme in which the end face of the first driving member 410 close to the adjusting assembly 500 and the end face of the first adjusting member 510 close to the driving assembly 400 are provided with limiting structures, the limiting structure includes a first limiting structure 411 and a second limiting structure 511. The first limiting structure 411 is arranged on the end face of the first driving member 410 close to the adjusting assembly 500, and the second limiting structure 511 is arranged on the end face of the first adjusting member 510 close to the driving assembly 400. When the user uses the abdominal wheel 1 to drive the roller body 30 to rotate in the first direction, the first driving member 410 is driven to move towards the adjusting assembly 500, and after moving to the position, the first limiting structure 411 abuts against the first adjusting member 510, and the second limiting structure 511 abuts against the first driving member 410. In this way, the force point when the limiting structure abuts against can be increased, and the stability and service life of the limiting structure can be improved.

[0047] In order to avoid the influence of the first limiting structure 411 and the second limiting structure 511 on the stroke of the first driving member 410, thereby affecting the use stroke of the abdominal wheel 1, further referring to FIGS. 5 and 6, the first limiting structure 411 includes a second spring 4111 and a limiting tongue 4112. It should be noted that the first adjusting member 510 will rotate relative to the central shaft 20 during adjustment, and thus the second limiting structure 511 will rotate with the first adjusting member 510. If the first limiting structure 411 and the second limiting structure 511 are aligned, the first limiting structure 411 and the second limiting structure 511 will abut against each other after the first driving member 410 moves to the position close to the adjusting assembly 500, and at this time, the roller body 30 will be smaller than the set required stroke. The first limiting structure 411 of the present application is provided with the second spring 4111, so that the limiting tongue 4112 can be extended on the outer end face of the first driving member 410, thereby avoiding the above-mentioned situation.

[0048] Specifically, the opposite ends of the second spring 4111 abut against the limiting tongue 4112 and the first driving member 410, and the second spring 4111 is used to drive the abutting portion to protrude from the end surface of the first driving member 410. The limiting tongue 4112 is self-resettable, that is, if the first limiting structure 411 and the second limiting structure 511 are in alignment, under the driving of the second limiting structure 511, the limiting tongue 4112 can compress the second spring 4111 and retract into the first driving member 410. In this way, the second limiting structure 511 can avoid affecting the use precision by abutting against the first limiting structure 411, and the stability of the stroke of the abdominal wheel 1 can be improved.

[0049] Alternatively, the second limiting structure 511 can be set in a self-retractable form, and the first limiting structure 411 can be set in a fixed form. Of course, in other embodiments, the limiting structure can be arranged only on the first driving member 410 or the first adjusting member 510, and the present application is not limited thereto.

[0050] Further, referring to FIG. 6, the first limiting structure 411 can further include a fixed seat 4113 which is mounted with the first driving member 410 and encloses a mounting space, and the fixed seat 4113 is provided with an opening. The limiting tongue 4112 includes an abutting portion and a fixed portion, under the driving of the second spring 4111, the fixed portion abuts against the inner side surface of the fixed seat 4113, and the abutting portion protrudes outside from the opening. If the abutting portion is subjected to an external force, it will retract into the mounting space from the opening and compress the second spring 4111.

[0051] In some embodiments, referring to FIGS. 5 and 6 again, the driving assembly 400 further includes a second driving member 420 which is fixed opposite to the roller body 30 in the circumferential direction and is fixed opposite to the first driving member 410 in the axial direction, the second driving member 420 can rotate around the central shaft 20 under the driving of the roller body 30 and move in the direction of approaching or moving away from the adjusting assembly 500 under the driving of the first driving member 410, and the end surface of the second driving member 420 close to the adjusting assembly 500 is provided with a third limiting structure 421. Referring to FIGS. 5 and 6, the adjusting assembly 500 further includes a second adjusting member 520 which is fixed opposite to the central shaft 20 in the circumferential direction and is fixed opposite to the first adjusting member 510 in the axial direction, the second adjusting member 520 can move relatively in the axial direction under the driving of the first adjusting member 510, and the end surface of the second adjusting member 520 close to the driving assembly 400 is provided with a fourth limiting structure 521.

[0052] Specifically, the second driving member 420 is fixed opposite to the roller body 30 in the circumferential direction and opposite to the first driving member 410 in the axial direction, that is, the second driving member 420 can rotate around the central shaft 20 under the driving of the roller body 30 and can move in the direction close to or away from the adjusting assembly 500 under the driving of the first driving member 410. The second adjusting member 520 is fixed opposite to the central shaft 20 in the circumferential direction and opposite to the first adjusting member 510 in the axial direction, that is, the second adjusting member 520 only moves in the direction close to or away from the driving assembly 400. It can be understood that when adjusting the distance between the first adjusting member 510 and the first driving member 410, the movement of the first adjusting member 510 on the central shaft 20 will drive the relative movement of the second adjusting member 520. Please refer to FIGS. 8 and 9, and when the distance between the first adjusting member 510 and the first driving member 410 is adjusted to the minimum, the fourth limiting structure 521 of the second adjusting member 520 will abut against the third limiting structure 421 of the second driving member 420. In this way, it can be prevented that the adjusting assembly 500 is locked with the driving assembly 400 when it is adjusted to the minimum position. In addition, when the fourth limiting structure 521 and the third limiting structure 421 abut against each other during the adjustment process, it is the minimum stroke of the abdominal roller 1, that is, the "zero" state, and the stroke range required by the user during exercise can be adjusted by adjusting the adjusting assembly 500.

[0053] It should be noted that the abdominal roller 1 usually needs to bear the weight and pressure of the user during use, and if the internal parts move out of range, it is easy to lock and increase the safety risk during use. The first limiting structure 411, the second limiting structure 511, the fourth limiting structure 521 and the third limiting structure 421 can prevent the abdominal roller 1 from moving out of range when it is used under excessive pressure or excessive load, and by limiting the movement range of each part, it can be ensured that it will not exceed the safety limit in any use case.

[0054] In order to facilitate the relative movement of the first driving member 410 and the second driving member 420, please refer to FIG. 6, the first driving member 410 includes a driving seat 412 and a limiting seat 413, the limiting seat 413 is installed on one end of the driving seat 412 close to the adjusting assembly 500, and the limiting seat 413 is provided with the first limiting structure 411. The first limiting part 422 is arranged on the end of the second driving member 420 away from the roller body 30, the second driving member 420 is nested in the inner side of the driving seat 412, the limiting seat 413 is fixedly connected with the adjusting seat 512, and the first limiting part 422 is limited between the driving seat 412 and the limiting seat 413.

[0055] The first driving member 410 is divided into two parts, one is to facilitate the processing of the first limiting structure 411, and the other is to facilitate the movement of the second driving member 420 along the axial direction of the central shaft 20 under the driving of the first driving member 410, and the rotation of the second driving member 420 around the central shaft 20 under the driving of the roller body 30. Specifically, the second driving member 420 is provided with a first limiting portion 422, and after the second driving member 420 is nested on the inner side of the driving seat 412, the first limiting portion 422 abuts on the end face of the driving seat 412, and then the limiting seat 413 is installed and fixed with the driving seat 412, that is, the first limiting portion 422 is limited between the driving seat 412 and the limiting seat 413. At this time, the limiting seat 413 and the driving seat 412 move relatively, and can drive the second driving member 420 to move. The limiting seat 413 and the driving seat 412 only limit the first limiting portion 422 in the axial direction, and do not limit the first limiting portion 422 in the circumferential direction, so that the second driving member 420 can rotate under the driving of the roller body 30.

[0056] In order to facilitate the relative movement of the first adjusting member 510 and the second adjusting member 520, please refer to Figure 7, the first adjusting member 510 includes an adjusting seat 512 and a limiting member 513, the adjusting seat 512 is threadedly connected with the central shaft 20, and the limiting member 513 is provided with a second limiting structure 511. The second adjusting member 520 is provided with a second limiting portion 522 at the end away from the fourth limiting structure 521, the limiting member 513 is sleeved on the outer side of the second adjusting member 520 and is fixedly connected with the adjusting seat 512, so as to limit the second limiting portion 522 between the limiting member 513 and the adjusting seat 512.

[0057] The first adjusting member 510 is divided into two parts, one is to facilitate the processing of the second limiting structure 511, and the other is to facilitate the movement of the second adjusting member 520 along the axial direction of the central shaft 20 under the driving of the first adjusting member 510, and the rotation of the second adjusting member 520 around the central shaft 20. Specifically, the second adjusting member 520 is provided with a second limiting portion 522, and after the limiting member 513 is sleeved on the outer side of the second adjusting member 520, the end face on the limiting member 513 limits the second limiting portion 522, and then the limiting member 513 is installed and matched with the adjusting seat 512, so as to limit the second limiting portion 522 between the driving seat 412 and the limiting seat 413. At this time, the adjusting seat 512 and the limiting member 513 move relatively, and can drive the second adjusting member 520 to move in the circumferential direction of the central shaft 20. Similarly, the adjusting seat 512 and the limiting member 513 only limit the second limiting portion 522 in the axial direction, and do not limit the second limiting portion 522 in the circumferential direction, so that the second adjusting member 520 is not affected by the rotation of the adjusting seat 512 and the limiting member 513 around the central shaft 20.

[0058] It should be noted that the connection relationship between the driving seat 412 and the limiting seat 413, and the connection relationship between the adjusting seat 512 and the limiting member 513 include but are not limited to clamping, screwing, bonding, welding and the like, and the application is not limited thereto.

[0059] In order to facilitate the relative fixation of the second adjusting member 520 and the middle shaft 20 in the axial direction, the outer wall surface of the middle shaft 20 is provided with a third limiting portion 221, and the inner wall surface of the second adjusting member 520 is provided with a fourth limiting portion 523. The third limiting portion 221 extends in the axial direction, and the fourth limiting portion 523 is in sliding cooperation with the third limiting portion 221. In this way, the second adjusting member 520 can be moved and adjusted along the middle shaft 20 in a precise manner, and the working operation is simple and the survival efficiency is high.

[0060] In some embodiments, referring to FIGS. 2 and 5, the middle shaft 20 includes a shaft body 21 and an assembly seat 22, the assembly seat 22 is fixed relative to the shaft body 21 and is provided with a first threaded portion, and the first adjusting member 510 is in threaded cooperation with the first threaded portion. In this way, the thread on the middle shaft 20 is formed. The outer wall surface of the assembly seat 22 is provided with the third limiting portion described above.

[0061] In order to facilitate the mounting and cooperation of the roller body 30 with the first driving member 410 and the second driving member 420, referring to FIG. 5, the roller body 30 includes a wheel body 31 and a mounting seat 32, the mounting seat 32 is fixed relative to the wheel body 31 and is provided with a second threaded portion. The first driving member 410 is provided with a third threaded portion, and the second threaded portion is in threaded cooperation with the third threaded portion. The roller body 30 is designed as the wheel body 31 and the mounting seat 32, which can facilitate the processing of the roller shell and the formation of the threaded portion, improve the production efficiency, and also ensure the stability of the rotation of the roller body 30 and the stability of the cooperation of the first driving member 410 with the roller body 30.

[0062] It should be noted that the roller body 30 can include a left wheel shell and a right wheel shell, wherein the left wheel shell and the right wheel shell are fixed relative to each other and enclose a mounting cavity, and the adjusting structure 40 is mounted in the mounting cavity, which can effectively protect the adjusting structure 40 and improve the service life of the abdominal wheel 1. Further, the driving assembly 400 can be in relative cooperation with one of the rollers. For example, the left wheel shell of the embodiment of the application includes the wheel body 31 and the mounting seat 32, and the right wheel shell only includes the wheel body 31. In this way, the space utilization of the mounting cavity can be improved.

[0063] In order to improve the stability of the relative rotation between the second driving member 420 and the roller body 30, the inner side of the mounting seat 32 is provided with a fifth limiting part 321, and the outer side of the second driving member 420 is provided with a sixth limiting part 423. The fifth limiting part 321 extends in the axial direction, and the fifth limiting part 321 and the sixth limiting part 423 are in sliding fit. In this way, the fit between the fifth limiting part 321 and the sixth limiting part 423 fixes the second driving member 420 and the mounting seat 32 relative to each other in the circumferential direction, so that the second driving member 420 can rotate with the roller body 30.

[0064] In order to facilitate the adjustment of the position of the first adjusting member 510 on the central shaft 20, referring to FIGS. 2 and 5, the adjusting assembly 500 further comprises an adjusting knob 531 and a limiting bearing 532. The limiting bearing 532 is fixed relative to the central shaft 20, the adjusting knob 531 is fixed relative to the limiting bearing 532 in the axial direction and can rotate around the limiting bearing 532, and the adjusting knob 531 is fixed relative to the first adjusting member 510 in the circumferential direction. In some structural forms, the limiting bearing 532 is provided with a buckle, and the adjusting knob 531 is provided with an annular clamping groove. The buckle is clamped in the annular clamping groove, so that the adjusting knob 531 is fixed relative to the limiting bearing 532 in the axial direction and can rotate around the limiting bearing 532. Alternatively, the adjusting knob 531 is provided with a buckle, and the limiting bearing 532 is provided with an annular clamping groove.

[0065] In some embodiments, the inner side of the adjusting knob 531 is provided with a limiting groove, and the adjusting seat 512 is provided with a limiting block. The limiting block is inserted into the limiting groove, so that the adjusting knob 531 and the first adjusting member 510 can be fixed relative to each other in the circumferential direction, and during the rotation of the adjusting knob 531 and the first adjusting member 510, the adjusting seat 512 can move along the threaded part of the mounting seat 22 in the axial direction of the central shaft 20.

[0066] Further, referring to FIGS. 7 and 10, the limiting bearing 532 is provided with a first limiting part 5321, and the first adjusting member 510 is provided with a second limiting part 514. When the distance between the first adjusting member 510 and the first driving member 410 is adjusted to the maximum, the first limiting part 5321 abuts against the second limiting part 514. Through the design of the first limiting part 5321 and the second limiting part 514, when the distance between the first adjusting member 510 and the first driving member 410 is adjusted to the maximum, the first limiting part 5321 abuts against the second limiting part 514 to prevent further adjustment. This mechanical limiting can effectively prevent the operator from over-adjusting or adjusting beyond the predetermined range, avoiding the running failure or performance decline caused by exceeding the design range.

[0067] In addition, a scale line can be arranged on the adjusting knob 531, and the user can observe the travel distance of the abdominal wheel 1 adjusted to the corresponding value by controlling the scale of the adjusting knob 531, so as to facilitate the user to adjust different values.

[0068] In some embodiments, referring to FIG. 6, the third limiting part 322 is arranged on the roller body 30, that is, the mounting seat 32 is provided with the third limiting part 322. The fourth limiting part 414 is arranged on the first driving member 410, and the third limiting part 322 abuts against the fourth limiting part 414 in the initial state. In this way, the initial position of the roller body 30 can be fixed, so as to prevent the roller body 30 from being moved or changed in position unintentionally before being used or operated, thereby maintaining the stability and safety of the device in the use state.

[0069] Referring to FIGS. 2 and 5, the driving assembly 400 further comprises the first spring 430, one end of which is connected to the roller body 30 and the other end of which is connected to the middle shaft 20, for driving the roller body 30 to return to the initial state. Specifically, the middle shaft 20 can further comprise a fixed sleeve shaft 23 sleeved outside the shaft body 21 and fixed relative to the shaft body 21. The fixed sleeve shaft 23 and the middle shaft 20 can be fixed as a whole by screwing, clamping, welding or the like. The fixed sleeve shaft 23 and the mounting seat 32 can be provided with fixing holes, and a threaded fastener is used to pass through the fixing rings at both ends of the first spring 430 and fixed in the two fixing holes, so as to fix the first spring 430 relative to the roller body 30 and the middle shaft 20. The mounting seat 32 can be provided with a fixing hole.

[0070] In use, the user holds the handle 10, the middle shaft 20 does not rotate, and the roller body 30 rotates forward, the first spring 430 forms a resistance effect, and the roller body 30 rotates backward, the first spring 430 forms an assisting effect. Further, one end of the first spring 430 connected to the roller body 30 is located at the center of the roller body 30, so that the force receiving points of the first spring 430 and the roller body 30 are at the center of the entire roller body 31, so as to keep the roller body 30 in the center during reciprocating motion, keep the resistance of both hands consistent, and maintain a good exercise type.

[0071] Further, the first spring 430 of the embodiment of the present application is a ball taper spring, and the diameter ratio of the end portions at both ends of the ball taper spring is 1:2; wherein the smaller end is connected to the middle shaft 20, and the larger end is connected to the roller body 30. This design enables the first spring 430 to better disperse stress and reduce local stress concentration when working, effectively prolonging the service life of the first spring 430. At the same time, due to the characteristics of the ball taper spring, the resistance of the roller body 30 gradually increases. Specifically, the diameter of the ball taper spring gradually increases or decreases from one end to the other end. This shape design enables the ball taper spring to have nonlinear elastic properties when stressed. Due to the shape change of the ball taper spring, when an external force acts on the ball taper spring, the ball taper spring will provide a smaller resistance at the initial position. As the external force increases, the ball taper spring will be gradually stretched or compressed, and when it reaches a certain degree, the shape change of the ball taper spring will cause it to provide greater resistance. Therefore, the ball taper spring can gradually increase the resistance during use, which can further improve the user's exercise effect.

[0072] The same or similar reference numerals in the drawings of the embodiment correspond to the same or similar components; in the description of the present application, it should be understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation of the present application. For those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0073] The above is only a preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An abdominal wheel (1) characterized in that, The utility model relates to a kind of adjustable roller, including: Handle (10), middle shaft (20), roller body (30) and adjusting structure (40), the opposite sides of the middle shaft (20) are connected with the handle (10);The roller body (30) is rotatably connected with the middle shaft (20), and the adjusting structure (40) includes driving assembly (400) and adjusting assembly (500), and the driving assembly (400) and the adjusting assembly (500) are spaced apart in the axial direction of the middle shaft (20); The driving assembly (400) includes first driving member (410), and the first driving member (410) is threadedly connected with the roller body (30), and can be moved in the axial direction in the direction close to or away from the adjusting assembly (500) under the condition that the roller body (30) rotates; The adjusting assembly (500) includes first adjusting member (510), and the first adjusting member (510) is threadedly connected with the middle shaft (20), and can be moved in the axial direction in the direction close to or away from the driving assembly (400) during rotation around the middle shaft (20); Wherein, the end face of the first driving member (410) close to the adjusting assembly (500) and / or the end face of the first adjusting member (510) close to the driving assembly (400) is provided with limiting structure.

2. An abdominal wheel (1) as claimed in claim 1, characterized in that The limiting structure includes first limiting structure (411) and second limiting structure (511), the first limiting structure (411) is arranged on the end face of the first driving member (410) close to the adjusting assembly (500), and the second limiting structure (511) is arranged on the end face of the first adjusting member (510) close to the driving assembly (400);And / or The driving assembly (400) further includes second driving member (420), and the second driving member (420) is fixedly connected with the roller body (30) in the circumferential direction, and is fixedly connected with the first driving member (410) in the axial direction, the second driving member (420) can rotate around the middle shaft (20) under the driving of the roller body (30), and move in the direction close to or away from the adjusting assembly (500) under the driving of the first driving member (410), the end face of the second driving member (420) close to the adjusting assembly (500) is provided with third limiting structure (421); The adjusting assembly (500) further includes second adjusting member (520), and the second adjusting member (520) is fixedly connected with the middle shaft (20) in the circumferential direction, and is fixedly connected with the first adjusting member (510) in the axial direction, the second adjusting member (520) can move relatively in the axial direction under the driving of the first adjusting member (510), and the end face of the second adjusting member (520) close to the driving assembly (400) is provided with fourth limiting structure (521); Wherein, when the distance between the first adjusting member (510) and the first driving member (410) is adjusted to the minimum, the third limiting structure (421) abuts against the fourth limiting structure (521). ​ 3. An abdominal wheel (1) as claimed in claim 2, characterized in that The first driving member (410) includes a driving seat (412) and a limiting seat (413). The limiting seat (413) is installed at one end of the driving seat (412) near the adjusting assembly (500), and the limiting seat (413) is provided with the first limiting structure (411). The second driving member (420) has a first limiting part (422) at one end away from the roller body (30). The second driving member (420) is nested inside the driving seat (412). The limiting seat (413) is fixedly connected to the driving seat (412) and restricts the first limiting part (422) between the driving seat (412) and the limiting seat (413); and / or, The first adjusting member (510) includes an adjusting seat (512) and a limiting member (513). The adjusting seat (512) is threadedly connected to the central shaft (20). The limiting member (513) is provided with a second limiting structure (511). The second adjusting member (520) has a second limiting part (522) at one end away from the fourth limiting structure (521). The limiting member (513) is sleeved on the outside of the second adjusting member (520) and fixedly connected to the adjusting seat (512) to restrict the second limiting part (522) between the limiting member (513) and the adjusting seat (512).

4. An abdominal roller (1) as claimed in claim 2, characterized in that The central shaft (20) includes a shaft body (21) and a mounting base (22). The mounting base (22) is fixed relative to the shaft body (21) and is provided with a first threaded portion. The first adjusting member (510) is threadedly engaged with the first threaded portion; and / or, The roller body (30) includes a wheel body (31) and a mounting base (32). The mounting base (32) is fixed relative to the wheel body (31) and is provided with a second threaded portion. The first driving member (410) is provided with a third threaded portion, and the second threaded portion is threadedly engaged with the third threaded portion.

5. An abdominal roller (1) according to any one of claims 1 to 4, characterized in that The adjustment assembly (500) further includes an adjustment knob (531) and a limiting bearing (532). The limiting bearing (532) is fixed relative to the central shaft (20). The adjustment knob (531) is fixed relative to the limiting bearing (532) in the axial direction and can rotate around the limiting bearing (532). The adjustment knob (531) is fixed relative to the first adjustment member (510) in the circumferential direction.

6. An abdominal roller (1) as claimed in claim 5, characterized in that The limiting bearing (532) is provided with a first limiting part (5321), and the first adjusting member (510) is provided with a second limiting part (514). When the distance between the first adjusting member (510) and the first driving member (410) is adjusted to the maximum, the first limiting part (5321) abuts against the second limiting part (514).

7. An abdominal roller (1) according to any one of claims 1 to 4, characterized in that The roller body (30) is provided with a third limiting part (322), and the first driving member (410) is provided with a fourth limiting part (414). In the initial state, the third limiting part (322) abuts against the fourth limiting part (414).

8. An abdominal roller (1) according to any one of claims 1 to 4, characterized in that The drive assembly (400) further includes a first spring (430), one end of which is connected to the roller body (30) and located at the center of the roller body (30), and the other end is connected to the central shaft (20) for driving the roller body (30) to return to its initial state.

9. An abdominal wheel (1) as claimed in claim 8, characterized in that The first spring (430) is a conical spring, and the ratio of the diameters of the two ends of the conical spring is 1:2; The smaller end is connected to the central shaft (20), and the larger end is connected to the roller body (30).

10. An abdominal roller (1) according to any one of claims 1 to 4, characterized in that The first limiting structure (411) includes a second spring (4111) and a limiting tongue (4112); The two ends of the second spring (4111) abut against the limiting tongue (4112) and the first driving member (410), and the second spring (4111) is used to drive the limiting tongue (4112) to extend out of the end face of the first driving member (410).

Images