Abdomen exerciser

Abstract

The utility model relates to the technical field of fitness equipment, in particular to an abdomen exerciser which comprises a rack part and a moving part rotationally connected to the rack part, the moving part comprises a cushion assembly and a foot stool assembly, the abdomen exerciser further comprises an elastic resistance mechanism, and the elastic resistance mechanism is connected with the rack part and the moving part respectively. The elastic resistance mechanism is driven by the moving part to generate elastic deformation, and motion resistance is provided for the moving part to rotate relative to the rack part by means of the elastic deformation. Movement resistance is provided for the movement part by means of elastic deformation of the elastic resistance mechanism, so that the movement intensity is increased, and the high-intensity movement requirement can be met. And secondly, the elastic resistance mechanism can provide larger motion resistance along with the increase of the motion stroke of the motion part, so that the variable motion resistance is correspondingly provided along with the change of the exercise amplitude in the exercise process of the user, and the motion of the motion part is more stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to body -building equipment technical field, concretely relates to an abdominal exercise device. BACKGROUND

[0002] With people pay more and more attention to health, the market emerges a variety of body -building equipment, among which there are some devices for abdominal exercise. At present, there is an abdominal exercise device including support, handle, cushion and foot rest, when using, the user sits on the cushion, feet are placed at the foot rest, hands hold the handle, through the power of legs to lift legs or put down to drive the cushion to rotate relative to the support, thereby achieving the purpose of exercising abdomen. However, the user exercises by overcoming the gravity of the cushion, foot rest and the user himself, for the user with stronger movement ability or greater intensity demand, it is unable to meet the demand of increasing movement intensity. SUMMARY

[0003] The utility model aims at providing an abdominal exercise device to solve the problem that the existing abdominal exercise device cannot adjust movement intensity.

[0004] To achieve the above object, the technical scheme of the utility model is as follows: an abdominal exercise device, including frame part and movement part rotatably connected to the frame part, the movement part includes cushion assembly and foot rest assembly, further including elastic resistance mechanism, the elastic resistance mechanism and the frame part and the movement part form connection relationship respectively, the elastic resistance mechanism is driven by the movement part to occur elastic deformation, and the elastic deformation provides movement resistance for the relative rotation of the movement part on the frame part.

[0005] In an embodiment, the movement part further includes connecting rod assembly, the cushion assembly and the foot rest assembly are arranged at two ends of the connecting rod assembly respectively, the elastic resistance mechanism includes linear elastic element, two ends of the linear elastic element are first elastic end and second elastic end respectively, the first elastic end of the linear elastic element is connected to the frame part, and the second elastic end of the linear elastic element is connected to the connecting rod assembly of the movement part or the foot rest assembly of the movement part.

[0006] In an embodiment, the frame part is provided with first fixing part, the connecting rod assembly or the foot rest assembly of the movement part is provided with second fixing part, the first elastic end of the linear elastic element is connected to the first fixing part, and the second elastic end is connected to the second fixing part.

[0007] In one embodiment, the frame portion is provided with a roller, and a middle portion of the linear elastic element is defined between the first and second elastic ends of the linear elastic element, and the middle portion of the linear elastic element is arranged around the roller.

[0008] In one embodiment, the frame portion comprises a main frame, the main frame comprises a first main frame rod group and a second main frame rod group which are cross-connected, and a connection of the first and second main frame rod groups is located at a top of the first main frame rod group, the first fixing member is arranged at the connection of the first and second main frame rod groups, and the roller is arranged at a bottom of the first main frame rod group.

[0009] In one embodiment, the second fixing member is a hook, the second elastic end is detachably hooked on the second fixing member, and a plurality of second fixing members are arranged at intervals along a length direction of the link assembly.

[0010] In one embodiment, the linear elastic element is an elastic rope.

[0011] In one embodiment, the exercise portion further comprises a link assembly, the seat cushion assembly and the foot support assembly are arranged at two ends of the link assembly respectively, the frame portion comprises a main frame and handles arranged at two sides of the main frame for a user to hold, a direction of extension of the link assembly is defined as an X-axis direction, a direction of the two handles relative to each other is defined as a Y-axis direction, and a direction perpendicular to the X-axis direction and the Y-axis direction is defined as a Z-axis direction, the link assembly is connected to the main frame through a rotating mechanism, the rotating mechanism is capable of rotating around the Y-axis direction and the Z-axis direction respectively, so that the exercise portion has a composite motion of rotating around the Y-axis direction and the Z-axis direction relative to the main frame.

[0012] In one embodiment, the rotating mechanism comprises a first rotating mechanism and a second rotating mechanism, a rotating shaft of the first rotating mechanism extends along the Y-axis direction, a rotating shaft of the second rotating mechanism extends along the Z-axis direction, the link assembly is connected to the second rotating mechanism and rotates around the Z-axis direction under a driving of the second rotating mechanism, the second rotating mechanism is connected to the first rotating mechanism, the link assembly and the second rotating mechanism rotate around the Y-axis direction under a driving of the first rotating mechanism, and the first rotating mechanism is further connected to the main frame, so that the exercise portion has the composite motion through the respective rotations of the first and second rotating mechanisms.

[0013] In one embodiment, the first rotating mechanism comprises a first rotating shaft and two connecting members fixedly connected to the main frame, the first rotating shaft extends along the Y-axis direction, the first rotating shaft is connected to the two connecting members, the first rotating shaft is externally provided with a first sleeve, and the first sleeve is relatively rotatably connected to the first rotating shaft through a first shaft sleeve; the second rotating mechanism comprises a second sleeve fixedly connected to the first sleeve, a second rotating shaft is arranged in the second sleeve and extends along the Z-axis direction, the second rotating shaft is relatively rotatably connected to the second sleeve through a second shaft sleeve, and the second rotating shaft is further connected to the connecting rod assembly.

[0014] In one embodiment, the rack part comprises a main frame, the main frame comprises a tension member and a first main frame rod group and a second main frame rod group which are cross-connected, the first main frame rod group and the second main frame rod group are hingedly connected, the ends of the first main frame rod group and the second main frame rod group away from the hinge points thereof are defined as free ends, and the two ends of the tension member are connected to the free ends of the first main frame rod group and the second main frame rod group respectively to limit the included angle of the first main frame rod group and the second main frame rod group towards the direction in which the tension member is located.

[0015] In one embodiment, the second main frame rod group is provided with a connecting plate, the connecting plate comprises a first plate portion and a second plate portion which are oppositely arranged and a third plate portion arranged between the first plate portion and the second plate portion, the first main frame rod group is connected to the first plate portion and the second plate portion through a pin shaft, and the third plate portion is located at one side of the first main frame rod group to limit the included angle of the first main frame rod group and the second main frame rod group towards the direction in which the tension member is located; the third plate portion is connected to a reinforcing plate, and the reinforcing plate is arranged at the side of the third plate portion away from the first main frame rod group and is fixedly connected with the second main frame rod group.

[0016] The utility model has the advantages of:

[0017] 1、The utility model provides motion resistance by the elastic deformation of the elastic resistance mechanism, thereby increasing the motion intensity and meeting the high-intensity motion requirement.

[0018] 2、The linear elastic element can provide greater motion resistance with the increase of the motion stroke of the motion part, thereby providing varying motion resistance corresponding to the change of the exercise amplitude during the user's exercise, and facilitating the more stable motion of the motion part.

[0019] 3. The linear elastic element is connected to the first fixing member of the frame part and the second fixing member of the moving part respectively, and the elastic force of the linear elastic element is determined by the distance change between the first fixing member and the second fixing member in the extension direction of the linear elastic element, no matter how the moving part rotates relative to the frame part, and the structure adaptability of the exercise device is strong, and the exercise device is suitable for different structures.

[0020] 4. The second elastic end of the linear elastic element is hooked on the hook, so that the second elastic end forms a detachable connection with the connecting rod assembly, the linear elastic element can be used to increase the exercise resistance or not used to provide the exercise resistance by relying on gravity only according to different exercise requirements of the user, and different exercise requirements of the user can be met.

[0021] 5. The moving part forms the composite motion of rotating along the Y axis and the Z axis by relying on the rotating mechanism, and the user can form the motion of up and down leg lifting or left and right swinging or the composite motion of up and down and left and right twisting, and the diversity of the motion form is increased. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the perspective view of the embodiment of the utility model.

[0023] Figure 2 is the exploded view of the embodiment of the utility model.

[0024] Figure 3 is the front view of the embodiment of the utility model.

[0025] Figure 4 is the side view of the embodiment of the utility model.

[0026] Figure 5 is the use state view of the embodiment of the utility model.

[0027] Figure 6 is the folding state view of the embodiment of the utility model.

[0028] Figure 7 is the A-A section view of Figure 4 .

[0029] Figure 8 is the B-B section view of Figure 4 .

[0030] Figure 9 is the perspective view of another embodiment of the utility model.

[0031] Figure 10 is the perspective view of the embodiment of the utility model containing the drawstring.

[0032] Wherein: 1 frame part, 11 main frame, 111 first main frame rod group, 112 second main frame rod group, 12 handle, 13 pull belt, 14 connecting plate, 141 first plate part, 142 second plate part, 143 third plate part, 15 reinforcing plate, 2 movement part, 21 seat cushion assembly, 22 foot support assembly, 23 connecting rod assembly, 231 first connecting rod, 232 second connecting rod, 233 elastic pin, 234 adjusting hole, 3 elastic resistance mechanism, 31 elastic rope, 311 first elastic end, 312 second elastic end, 32 roller, 33 first fixing piece, 34 second fixing piece, 4 rotating mechanism, 41 first rotating mechanism, 411 first rotating shaft, 412 first sleeve, 413 first shaft sleeve, 414 connecting piece, 42 second rotating mechanism, 421 second rotating shaft, 422 second sleeve, 423 second shaft sleeve. DETAILED DESCRIPTION

[0033] To further illustrate the embodiments, the utility model provides the drawings. These drawings are part of the utility model disclosure, which is mainly used to illustrate the embodiments, and can explain the operation principle of the embodiments in conjunction with the related description of the specification. With reference to these contents, those skilled in the art should understand other possible embodiments and the advantages of the utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0034] Reference Figures 1 to 6 As shown in the figure, the utility model discloses a kind of abdominal exercise device, including frame part 1 and the movement part 2 of rotation connection in frame part 1, frame part 1 includes herringbone main frame 11 and handle 12, movement part 2 includes seat cushion assembly 21, foot support assembly 22 and connecting rod assembly 23, seat cushion assembly 21 and foot support assembly 22 are respectively arranged at two ends of connecting rod assembly 23.When using, user sits in seat cushion assembly 21, both feet are placed in foot support assembly 22, both hands hold handle 12, both legs swing with hip as center, so that movement part 2 is rotated relative to frame part 1, reach the purpose of exercise.

[0035] The main frame 11 of the frame part 1 comprises a first main frame rod group 111 and a second main frame rod group 112 which are cross-connected, and the connection of the first main frame rod group 111 and the second main frame rod group 112 is located at the top of the first main frame rod group 111, so that the side of the main frame 11 is formed as a herringbone structure. The bottom of the first main frame rod group 111 and the second main frame rod group 112 is respectively used to be placed on the ground or other fixed objects, so that the abdominal exerciser is stably placed. The handles 12 are arranged at the top end of the second main frame rod group 112, and the two handles 12 are sleeved on the top end of the second main frame rod group 112. The connection of the first main frame rod group 111 and the second main frame rod group 112 is hinged, so that the main frame 11 forms a foldable structure, and when folded, the first main frame rod group 111 is close to the second main frame rod group 112, so as to facilitate the storage and transportation of the abdominal exerciser.

[0036] The abdominal exerciser also comprises an elastic resistance mechanism 3 which forms a connection relationship with the frame part 1 and the movement part 2 respectively, and the elastic resistance mechanism 3 is elastically deformed under the driving of the movement part 2, and the elastic resistance mechanism 3 provides a movement resistance for the relative rotation of the movement part 2 on the frame part 1 by means of the elastic deformation, so as to increase the movement intensity of the user using the abdominal exerciser, to meet the high-intensity movement demand and improve the fitness effect.

[0037] Referring to Figures 1 to 5 As shown in the figure, the elastic resistance mechanism 3 comprises a linear elastic element, which refers to an elastic element that follows Hooke's law and has a linear relationship between elastic force and deformation amount, such as elastic rope, spring, etc. The linear elastic element of the embodiment is specifically an elastic rope 31, and the two ends of the elastic rope 31 are respectively a first elastic end 311 and a second elastic end 312. The first elastic end 311 of the elastic rope 31 is connected to the frame part 1, and the second elastic end 312 of the elastic rope 31 is connected to the link assembly 23 of the movement part. The structure of the elastic rope 31 is relatively simple, and the elastic rope 31 can be stretched to generate elastic force with the movement of the movement part 2, which is reliable in work and low in cost. Moreover, the two ends of the elastic rope 31 are connected to the main frame 11 and the link assembly 23 respectively, and the rotating connection structure between the frame part 1 and the movement part 2 does not interfere with each other, so that the elastic resistance mechanism 3 with the elastic rope 31 can be adapted to different rotating connection structures of the abdominal exerciser, which has higher adaptability to the abdominal exerciser, and is also convenient for installing the elastic resistance mechanism 3 with the elastic rope 31 in the later stage of the finished abdominal exerciser.

[0038] The rack part 1 is provided with a first fixing member 33, the connecting rod assembly 23 of the moving part 2 is provided with a second fixing member 34, the first elastic end 311 of the elastic rope 31 is connected to the first fixing member 33, and the second elastic end 312 is connected to the second fixing member 34. In the embodiment, the first fixing member 33 and the second fixing member 34 are both hooks, and the first elastic end 311 and the second elastic end 312 of the elastic rope 31 are respectively provided with hooking holes, so that the two ends of the elastic rope 31 are respectively hooked on the two hooks. The elastic rope 31 is hooked on the hook, so that the elastic rope 31 is detachably arranged, so as to facilitate replacement of the elastic rope 31. After the elastic rope 31 is aged and the elasticity is weakened, replacement of the elastic rope 31 can maintain the resistance effect of the elastic resistance mechanism 3. In addition, for different users, the strength requirement may be different when using the abdominal exerciser for exercise. The user can replace different elastic ropes or remove the elastic rope according to the needs of the user to rely on gravity to exercise. In addition, when it is only necessary to switch between the movement resistance with and without the elastic rope 31, that is, it is only necessary to switch between the elastic force of the elastic rope 31 and the elastic force without the elastic rope 31, the first fixing member 33 or the second fixing member 34 can be arranged as a hook, and whether the elastic rope 31 provides elastic movement resistance can be switched by hooking one end of the elastic rope 31 on the hook or detaching the hook.

[0039] Referring to Figures 1 to 5 As shown, the elastic resistance mechanism 3 further comprises a roller 32 arranged on the rack part 1. The area between the first elastic end 311 and the second elastic end 312 of the elastic rope 31 is defined as the middle part of the elastic rope 31, and the middle part of the elastic rope 31 is arranged around the roller 32. The roller 32 can limit the stretching direction of the elastic rope 31. Compared with the case without the roller 32, the embodiment arranges the middle part of the elastic rope 31 around the roller 32, which can limit the extension direction of the elastic rope 31 to a certain extent, so that the elasticity is more controllable. In the process of stretching and contracting of the elastic rope 31, the roller 32 rolls to enable the elastic rope 31 to stretch and contract under the limitation of smaller resistance, so as to ensure that the movement resistance received by the moving part 2 is large enough.

[0040] The first fixing member 33 is arranged at the connection between the first main frame rod group 111 and the second main frame rod group 112, and the roller 32 is arranged at the bottom of the first main frame rod group 111, which can increase the length of the elastic rope 31, thereby providing a larger extension space and a larger elastic range, so that the rotation range of the moving part 2 is larger.

[0041] The link assembly 23 is long strip shape, the second fixing member 34 is arranged at the position of the link assembly 23 which is relatively close to the foot support assembly 22 and far away from the seat cushion assembly 21, because the rotation center of the moving part 2 is arranged at the position which is relatively close to the seat cushion assembly 21, so arranging the second fixing member 34 at the position of the link assembly 23 which is relatively close to the foot support assembly 22 can provide greater resistance torque, so that the abdominal exerciser has more obvious resistance.

[0042] Referring to Figure 9 As shown in the figure, the second fixing member 34 is provided with multiple, multiple hook structure second fixing member 34 along the length direction of the link assembly 23 is arranged in the link assembly 23. More specifically, the link assembly 23 includes the first link 231 and the second link 232, the seat cushion assembly 21 is arranged at the end of the first link 231 away from the second link 232, the foot support assembly 22 is arranged at the end of the second link 232 away from the first link 231. The second link 232 has a elastic pin 233, the first link 231 has a plurality of adjustment holes 234 for accommodating the elastic pin, so that the second link 232 can slide along the first link 231 to extend the link assembly 23, drive the foot support assembly 22 arranged at the end of the second link 232 to adjust the distance between the seat cushion assembly 21, adapt to different users with different leg length. The second fixing member 34 is fixedly arranged in the first link 231, and is located at the opposite side of the adjustment hole 234, to prevent the extension of the link assembly 23 from interfering with the second fixing member 34.

[0043] In addition to the hook, the first fixing member 33 and the second fixing member 34 can also be fixed pressure plate, the fixed pressure plate respectively press-bonding the two ends of the linear elastic element such as the elastic cord 31 or spring to the main frame 11 and the link assembly 23, and the fixed pressure plate is fixedly connected to the main frame 11 and the link assembly 23 by the connecting member such as screw.

[0044] The second elastic end 312 of the elastic cord 31 of the embodiment is connected to the link assembly 23 of the moving part, in other embodiments, the second elastic end of the linear elastic element can also be connected to the foot support assembly 22 of the moving part, and correspondingly, the second fixing member 34 is arranged at the foot support assembly 22 of the moving part 2.

[0045] Referring to Figure 4 、 Figure 5 、 Figure 7 and Figure 8As shown, in the embodiment, when the user uses the abdominal exerciser, the user's legs can swing up and down and left and right around the hips, so as to form a compound movement around the hips, so as to exercise the abdomen, the waist, the legs and the hips, and meet the diversified exercise needs of the user. The up and down and left and right swinging directions of the legs are relative to the user, that is, the up and down swinging refers to lifting or lowering the legs, and the left and right swinging refers to swinging the legs to the left or right of the user.

[0046] The extending direction of the linkage assembly 23 is defined as the X-axis direction, the direction of the two handles 12 relative to each other is defined as the Y-axis direction, and the direction perpendicular to the X-axis direction and the Y-axis direction is defined as the Z-axis direction. The linkage assembly 23 is connected to the main frame 11 through the rotating mechanism 4, the rotating mechanism 4 can rotate around the Y-axis direction and the Z-axis direction, so that the movement part 2 has a compound movement of rotating around the Y-axis direction and the Z-axis direction relative to the main frame 11, and the user can achieve the purpose of the compound movement around the hips. In the use process, since the movement part 2 moves relative to the frame part 1, the XYZ coordinate system is also moving, more specifically, the X-axis direction and the Z-axis direction are dynamically changing, and the Y-axis direction is unchanged.

[0047] The rotating mechanism 4 comprises a first rotating mechanism 41 and a second rotating mechanism 42, the rotating shaft of the first rotating mechanism 41 extends along the Y-axis direction, the rotating shaft of the second rotating mechanism 42 extends along the Z-axis direction, the connecting rod assembly 23 is connected to the second rotating mechanism 42 and rotates around the Z-axis direction under the driving of the second rotating mechanism 42, the second rotating mechanism 42 is connected to the first rotating mechanism 41, the connecting rod assembly 23 and the second rotating mechanism 42 rotate around the Y-axis direction under the driving of the first rotating mechanism 41, and the first rotating mechanism 41 is further connected to the main frame 11, so that the moving part 2 has the function of compound movement by the relative rotation of the first rotating mechanism 41 and the second rotating mechanism 42. More specifically, the first rotating mechanism 41 comprises a first rotating shaft 411 extending along the Y-axis direction and two connecting pieces 414 fixedly connected to the main frame 11, the first rotating shaft 411 is connected to the two connecting pieces 414, the first rotating shaft 411 is provided with a first sleeve 412, and the first sleeve 412 is connected to the first rotating shaft 411 in a relative rotation manner through a first shaft sleeve 413. The second rotating mechanism 42 comprises a second sleeve 422 fixedly connected to the first sleeve 412, a second rotating shaft 421 penetrating the second sleeve 422, the second rotating shaft 421 extending along the Z-axis direction, the second rotating shaft 421 being connected to the connecting rod assembly 23 in a relative rotation manner through a second shaft sleeve 423. The first rotating shaft 411 is a bolt connected to the two connecting pieces 414 through a nut, and the connecting piece 414 is a connecting piece fixedly arranged on the second main frame rod assembly 112. The first end of the second rotating shaft 421 is provided with an internal thread, the second rotating shaft 421 is connected to the second sleeve 422 through a bolt and the second shaft sleeve 423, and the second end of the second rotating shaft 421 penetrates the first connecting rod 231 of the connecting rod assembly 23 and is fixedly connected with the first connecting rod 231.

[0048] The elastic resistance mechanism 3 in the above embodiment is a linear elastic structure formed by the elastic rope 31 and the roller 32, and in other embodiments, the elastic resistance mechanism 3 can also be a torsion spring arranged between the first rotating mechanism and the second rotating mechanism. Specifically, a first torsion spring is arranged between the first sleeve and the first rotating shaft to provide resistance to movement around the Y-axis direction, and a second torsion spring is arranged between the second sleeve and the second rotating shaft to provide resistance to movement around the Z-axis direction, so as to provide corresponding resistance to movement according to the movement direction of the moving part 2.

[0049] The rotating mechanism 4 in the above embodiment is a mechanism formed by the first rotating mechanism 41 and the second rotating mechanism 42, which rotates independently around the Y-axis and the Z-axis, so that the user can swing the legs up and down for exercise or swing the legs left and right for exercise according to needs, and can also swing up, down, left and right in combination. In other embodiments, the rotating mechanism 4 can also be a universal shaft arranged between the connecting rod assembly 23 and the main frame 11, and the type of the universal shaft is not limited and can be selected by those skilled in the art according to actual conditions, such as a spherical hinge.

[0050] Referring to Figure 10 As shown, the connection of the first main frame rod group 111 and the second main frame rod group 112 is hinged, when a user uses the abdominal exerciser of the utility model, the force applied by the user on the 21 seat cushion assembly is large, the force transmitted to the connection of the first main frame rod group 111 and the second main frame rod group 112 is also large, which can cause the included angle between the first main frame rod group 111 and the second main frame rod group 112 to be undesirably stretched and enlarged, which is not conducive to the stability of the abdominal exerciser. Therefore, the main frame 11 is provided with a tension member, the tension member of the embodiment is a pull belt 13, the end of the first main frame rod group 111 and the second main frame rod group 112 away from the hinge point is defined as a free end, and the two ends of the pull belt 13 are connected to the free end of the first main frame rod group 111 and the free end of the second main frame rod group 112 respectively, so as to limit the included angle of the first main frame rod group 111 and the second main frame rod group 112 in the direction of the pull belt 13. The pull belt 13 can be a flexible rope such as a woven belt or a pull rope, and the pull belt 13 of the embodiment is a flat woven belt. In other embodiments, other structures of tension members can be used instead of the pull belt 13, for example, a tension member composed of a plurality of metal rod members hinged together, when the main frame 11 is folded, the metal rod members can be folded, and when the main frame 11 is unfolded, the metal rod members also unfold to limit the amplitude of the unfolding of the main frame 11.

[0051] The second main frame rod group 112 is provided with a connecting plate 14, the connecting plate 14 includes a first plate portion 141 and a second plate portion 142 arranged opposite to each other and a third plate portion 143 arranged between the first plate portion 141 and the second plate portion 142, the first main frame rod group 111 is connected to the first plate portion 141 and the second plate portion 142 through a pin shaft, and the third plate portion 143 is located on one side of the first main frame rod group 111, so as to limit the included angle of the first main frame rod group 111 and the second main frame rod group 112, that is, the existence of the third plate portion 143 can also play a role in limiting the opening angle of the main frame 11, and the cooperation of the third plate portion 143 and the pull belt 13 is better for preventing the main frame 11 from being excessively unfolded.

[0052] Since the third plate part 143 is a thin plate, the force exerted on the abdominal exerciser by the user is relatively large when the user uses the abdominal exerciser, and the third plate part 143 directly bears the force when the first main frame rod group 111 is opened, so there is a risk of deformation. In the embodiment, the third plate part 143 is connected to a reinforcing plate 15, and the reinforcing plate 15 is arranged on the side of the third plate part 15 away from the first main frame rod group 111 and is fixedly connected with the second main frame rod group 112. The reinforcing plate 15 can support and strengthen the third plate part 143, prevent the third plate part 143 from deforming and affecting its function of limiting the main frame 11 from being excessively opened. The reinforcing plate 15 of the embodiment is also the connecting piece 414 connecting the first rotating shaft 411, so the reinforcing plate 15 not only plays a role in increasing the strength of the third plate part 143, but also plays a role in connecting the first rotating shaft 411.

[0053] Although the utility model is specifically shown and introduced in combination with the preferred embodiments, those skilled in the art should understand that the remaining unexplained parts are prior art, and various changes made to the utility model in form and details without departing from the spirit and scope of the utility model defined in the appended claims all fall within the protection scope of the utility model.

Claims

1. An abdominal exerciser comprising a frame portion and a moving portion pivotally connected to said frame portion, said moving portion comprising a seat pad assembly and a foot rest assembly, characterized in that: The elastic resistance mechanism is connected with the frame part and the moving part respectively, and is elastically deformed under the driving of the moving part, thereby providing the moving part with resistance when rotating relative to the frame part.

2. An abdominal exerciser according to claim 1, characterised in that: The moving part further comprises a connecting rod assembly, and the seat cushion assembly and the foot support assembly are arranged at two ends of the connecting rod assembly respectively.

3. An abdominal exerciser according to claim 2, wherein: The frame part is provided with a first fixing member, and the connecting rod assembly or the foot support assembly of the moving part is provided with a second fixing member.

4. An abdominal exerciser according to claim 3, wherein: The frame part is provided with a roller, and a middle part of the linear elastic element is arranged around the roller.

5. An abdominal exerciser according to claim 4, wherein: The frame part comprises a main frame, and the main frame comprises a first main frame rod group and a second main frame rod group which are cross-connected, and a connection position of the first main frame rod group and the second main frame rod group is located at a top of the first main frame rod group.

6. An abdominal exerciser according to claim 3, wherein: The second fixing member is a hook, the second elastic end is detachably hooked on the second fixing member, and a plurality of second fixing members are arranged along a length direction of the connecting rod assembly.

7. An abdominal exerciser according to claim 2, wherein: The linear elastic element is an elastic rope.

8. An abdominal exerciser according to claim 1, wherein: The moving part further comprises a connecting rod assembly, and the seat cushion assembly and the foot support assembly are arranged at two ends of the connecting rod assembly respectively. The frame part is provided with a first fixing member, and the connecting rod assembly or the foot support assembly of the moving part is provided with a second fixing member. The frame part is provided with a roller, and a middle part of the linear elastic element is arranged around the roller. The frame part comprises a main frame, and the main frame comprises a first main frame rod group and a second main frame rod group which are cross-connected, and a connection position of the first main frame rod group and the second main frame rod group is located at a top of the first main frame rod group. The second fixing member is a hook, the second elastic end is detachably hooked on the second fixing member, and a plurality of second fixing members are arranged along a length direction of the connecting rod assembly. The linear elastic element is an elastic rope. The moving part further comprises a connecting rod assembly, and the seat cushion assembly and the foot support assembly are arranged at two ends of the connecting rod assembly respectively. The frame part is provided with a first fixing member, and the connecting rod assembly or the foot support assembly of the moving part is provided with a second fixing member. The frame part is provided with a roller, and a middle part of the linear elastic element is arranged around the roller. The frame part comprises a main frame, and the main frame comprises a first main frame rod group and a second main frame rod group which are cross-connected, and a connection position of the first main frame rod group and the second main frame rod group is located at a top of the first main frame rod group. The second fixing member is a hook, the second elastic end is detachably hooked on the second fixing member, and a plurality of second fixing members are arranged along a length direction of the connecting rod assembly. The linear elastic element is an elastic rope. The moving part further comprises a connecting rod assembly, and the seat cushion assembly and the foot support assembly are arranged at two ends of the connecting rod assembly respectively. The frame part is provided with a first fixing member, and the connecting rod assembly or the foot support assembly of the moving part is provided with a second fixing member. The frame part is provided with a roller, and a middle part of the linear elastic element is arranged around the roller. The frame part comprises a main frame, and the main frame comprises a first main frame rod group and a second main frame rod group which are cross-connected, and a connection position of the first main frame rod group and the second main frame rod group is located at a top of the first main frame rod group. The second fixing member is a hook, the second elastic end is detachably hooked on the second fixing member, and a plurality of second fixing members are arranged along a length direction of the connecting rod assembly. The linear elastic element is an elastic rope.

9. An abdominal exerciser according to claim 8, characterised in that: The rotating mechanism comprises a first rotating mechanism and a second rotating mechanism, the rotating shaft of the first rotating mechanism extends along the Y-axis direction, the rotating shaft of the second rotating mechanism extends along the Z-axis direction, the linkage assembly is connected to the second rotating mechanism and rotates around the Z-axis direction under the driving of the second rotating mechanism, the second rotating mechanism is connected to the first rotating mechanism, the linkage assembly and the second rotating mechanism rotate around the Y-axis direction under the driving of the first rotating mechanism, and the first rotating mechanism is further connected to the main frame, so that the moving part has the function of the compound motion by the rotation of the first rotating mechanism and the second rotating mechanism.

10. An abdominal exerciser according to claim 9, characterised in that: The first rotating mechanism comprises a first rotating shaft and two connecting members fixedly connected to the main frame, the first rotating shaft extends along the Y-axis direction, the first rotating shaft is connected to the two connecting members, the first rotating shaft is externally provided with a first sleeve, and the first sleeve is relatively rotatably connected to the first rotating shaft through a first shaft sleeve; the second rotating mechanism comprises a second sleeve fixedly connected to the first sleeve, a second rotating shaft is arranged in the second sleeve and extends along the Z-axis direction, the second rotating shaft is relatively rotatably connected to the second sleeve through a second shaft sleeve, and the second rotating shaft is further connected to the linkage assembly.

11. An abdominal exerciser according to claim 1, characterized in that: The rack part comprises a main frame, the main frame comprises a tension member and a first main frame rod group and a second main frame rod group cross-connected, the first main frame rod group and the second main frame rod group are hingedly connected, the ends of the first main frame rod group and the second main frame rod group away from the hinged points thereof are defined as free ends, and the two ends of the tension member are respectively connected to the free ends of the first main frame rod group and the second main frame rod group to limit the included angle of the first main frame rod group and the second main frame rod group towards the direction in which the tension member is located.

12. An abdominal exerciser according to claim 11, characterised in that: The second main frame rod group is provided with a connecting plate, the connecting plate comprises a first plate portion and a second plate portion oppositely arranged and a third plate portion arranged between the first plate portion and the second plate portion, the first main frame rod group is connected to the first plate portion and the second plate portion through a pin shaft, the third plate portion is located on one side of the first main frame rod group to limit the included angle of the first main frame rod group and the second main frame rod group towards the direction in which the tension member is located, and the third plate portion is connected to a reinforcing plate, the reinforcing plate is arranged on the side of the third plate portion away from the first main frame rod group and is fixedly connected with the second main frame rod group.

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