Elliptical machine structure

Abstract

The utility model provides an elliptical machine structure which comprises a fixing unit which is provided with a first pivot joint part, a second pivot joint part and a third pivot joint part. The two pedal units are arranged on the two opposite sides of the fixing unit respectively, and the pedal units are pivoted to the first pivoting parts; the two connecting rod units are arranged on the two opposite sides of the fixing unit respectively and connected with the two pedal units, and the connecting rod units are pivoted to the second pivoting part and the third pivoting part; the resistance unit is arranged on the fixing unit and connected with the third pivoting part, and the two pedal units are connected to the resistance unit through the corresponding connecting rod units respectively; the pedal unit is driven, so that pedal pieces located on the two sides of the fixing unit just move along a closed path; when the two pedal pieces move and are located on the opposite sides of the center of the closed path in the horizontal direction, the pedal faces of the two pedal pieces incline by an angle just towards the position of the center of the closed path.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of training equipment, in particular to a kind of creation of elliptical mechanism structure providing simulation walking action. BACKGROUND

[0002] According to the different training parts, there are corresponding suitable training equipment in gym, for example, treadmill, flywheel, dumbbell, etc., for training parts, such as leg push machine, rowing machine, or hip push machine, etc.

[0003] In order to train multiple parts in the same equipment, for example, elliptical machine is used. Elliptical machine combines pedaling bicycle, climbing stairs and similar back-and-forth action of rowing, and can achieve the effect of running, so elliptical machine is also called cross-training machine.

[0004] For example, Taiwan patent publication number TWM383421U "Adjustable stride elliptical walking machine" has a rotating wheel support and a rotating wheel directly arranged at the front end of the base, a side frame is arranged at each side of the base, a fulcrum shaft is protruded inwardly at the upper end of the side frame, and an elliptical walking link set is arranged at each side of the base, each elliptical walking link set is pivotally connected to the rotating wheel shaft and the fulcrum shaft, and an adjustable connecting seat that can slide up and down is pivotally connected at the connecting place of the upper connecting rod and the lower connecting rod of the elliptical walking link set, so as to adjust the swing track and stride of the walking machine, and a pedal assembly that can swing up and down is further arranged on the pedal rod of each elliptical walking link set, to adjust the installation angle between the pedal and the pedal rod, which can effectively improve the comfort of ankle during exercise.

[0005] Or Taiwan patent publication number TWI671098B "Multifunctional elliptical machine with adjustable stride size" includes a support unit, a resistance unit, a transmission unit, and two linkage units. The resistance unit includes a first resistance member and a second resistance member. The transmission unit includes a crank member, a first transmission group connected between the crank member and the first resistance member, and a second transmission group connected to the second resistance member. Each linkage unit can be transformed between an up-down movement state and a forward-backward movement state. In the up-down movement state, the linkage unit sequentially links the crank member, the first transmission group, and the first resistance member. In the forward-backward movement state, the linkage unit sequentially links the second transmission group and the second resistance member. Since the elements linked by the linkage unit are different in the up-down movement state and the forward-backward movement state, the stride in the forward-backward direction is not limited, and the size of the stride can be determined by itself, achieving better fitness effect.

[0006] But when stepping on the above-mentioned pedal, the pedal always keeps forward inclined state, when the pedal moves to the most front edge position, the user's corresponding foot sole moving to the front edge also fits on the pedal and presents similar cushioning state, under long-term use, the bad posture will cause injury to the foot. Content of the utility model

[0007] Therefore, the purpose of the utility model is to simulate the actual human walking or running state when using the elliptical mechanism, so that the foot sole moving to the front edge is in the state of higher toe, and the foot sole moving to the rear edge is in the state of higher heel, and an elliptical mechanism is provided.

[0008] The utility model provides a kind of elliptical mechanism, comprising:

[0009] A fixed unit has a base extending in a horizontal direction and a stand fixed to the base and extending in a height direction. The fixed unit has a front connecting bracket connected between the base and the stand. The fixed unit has a first pivot part, a second pivot part and a third pivot part arranged in the height direction from high to low in order. The second pivot part is arranged between the first pivot part and the third pivot part in the horizontal direction. The first pivot part and the second pivot part are arranged on the stand. The third pivot part is arranged on the front connecting bracket. Two pedal units are arranged on opposite sides of the fixed unit. Each pedal unit has a handrail rod, a pedal rod, a pedal bottom rod and a pedal piece. The pedal piece has a pedal face. Two ends of the handrail rod are pivotally connected to the first pivot part and one end of the pedal bottom rod respectively. The other end of the pedal bottom rod is pivotally connected to a lower pivot point of the pedal piece. One end of the pedal rod is pivotally connected to an upper pivot point of the pedal piece. The upper pivot point and the lower pivot point are arranged adjacent to each other in the height direction. The pedal rod has a pedal rod body point between opposite ends thereof. The handrail rod has a handrail rod body point between opposite ends thereof. The pedal rod body point is connected to the handrail rod body point, so that the pedal rod is pivotally connected to the handrail rod. Two connecting rod units are arranged on opposite sides of the fixed unit and connected to the two pedal units. Each connecting rod unit has a first rod, a second rod, a third rod, a fourth rod and a rotating shaft connecting piece. One end of the first rod is pivotally connected to the second pivot part. The other end of the first rod is pivotally connected to one end of the second rod. The other end of the second rod and one end of the third rod are pivotally connected to one end of the rotating shaft connecting piece. The other end of the rotating shaft connecting piece is pivotally connected to the third pivot part. The rotating shaft connecting pieces arranged on opposite sides of the fixed unit are arranged at 180 degrees in the radial direction of the third pivot part. The first rod has a first rod body point between opposite ends thereof. The fourth rod has a fourth rod body point between opposite ends thereof. One end of the fourth rod is pivotally connected to the first rod body point. The other end of the third rod is pivotally connected to the fourth rod body point. The other end of the fourth rod is pivotally connected to the other end of the pedal rod. A resistance unit is arranged on the fixed unit and connected to the third pivot part. The two pedal units are connected to the resistance unit via corresponding connecting rod units. The pedal pieces are driven to move along a closed path. When the pedal pieces move, the pedal faces of the pedal pieces are inclined at an angle towards the center of the closed path.

[0010] Further, the first rod, the second rod, the third rod and the fourth rod are connected to form a parallel four-bar linkage.

[0011] Further, a first distance between the handrail rod body joint and one end of the pedal base rod is less than a second distance between the upper pivot joint and the lower pivot joint.

[0012] Further, each pedal unit has a movable handrail connected to one end of the handrail rod, and two movable handrails extend in the height direction and have a widening section and a holding section.

[0013] Further, the fixed unit has a column upper section, two fixed handrails, and a display screen, the column upper section extends in the height direction and is fixed to the column, the two fixed handrails are fixed to the two sides of the column upper section, and the display screen is fixed to one end of the column upper section away from the column.

[0014] Further, the base has a base body and two transverse support seats connected to the opposite two ends of the base body, and two support columns and two guide wheels are arranged on the transverse support seats.

[0015] Further, the fixed unit has two side handrails, one end of each of the two side handrails is connected to the opposite two sides of the column, and the other end of each of the two side handrails is connected to the transverse support seat, so that the two pedal units are located between the two side handrails.

[0016] Further, the front connecting bracket includes a left connecting bracket and a right connecting bracket, the left connecting bracket and the right connecting bracket are arranged at a distance apart, the third pivot part has two bearing seats and a rotating shaft, the two bearing seats are respectively fixed to the left connecting bracket and the right connecting bracket, and the rotating shaft is rotatably inserted into the two bearing seats.

[0017] Further, two adjustment screw sets are arranged adjacent to the two bearing seats, each adjustment screw set has two adjustment screws, and each of the two adjustment screws is rotatably arranged against one end of the corresponding bearing seat.

[0018] Further, the resistance unit has an output wheel, a transmission wheel, and a resistance wheel, the output wheel is arranged on the rotating shaft and rotates synchronously with the rotating shaft, the transmission wheel and the resistance wheel are rotatably arranged on the fixed unit, the output wheel is drivingly connected to the transmission wheel via a first belt, and the transmission wheel is drivingly connected to the resistance wheel via a second belt.

[0019] The following effects can be achieved according to the above technical features:

[0020] 1. Using an elliptical machine can simultaneously achieve training of pedaling a bicycle, climbing stairs, and similar rowing movements; and when the foot soles are moved on the tread surface, the foot soles moving to the front edge are higher at the toes, and the foot soles moving to the rear edge are higher at the heels, so that the movement is closer to the actual walking or running state.

[0021] 2. In addition to training lower limbs, holding the moving handrail can provide the user with the simulation of back-and-forth action of rowing, thereby training upper limbs at the same time; in addition, when the upper limbs are not required to be trained, the hands can also hold the side handrail or the fixed handrail, thereby temporarily holding the hands.

[0022] 3. By adjusting the resistance of the resistance wheel, the force of driving the pedal can be adjusted, thereby increasing or reducing the load of training. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a perspective view of the utility model.

[0024] Figure 2 It is a perspective view of the utility model from another angle.

[0025] Figure 3 It is a perspective view of the utility model of the fixed unit.

[0026] Figure 4 It is a schematic view of the position of the first pivot connection part and the second pivot connection part of the fixed unit of the utility model.

[0027] Figure 5 It is a schematic view of the position of the third pivot connection part of the fixed unit of the utility model.

[0028] Figure 6 It is a perspective view of the connecting rod unit and the pedal unit arranged on the right side of the fixed unit of the utility model.

[0029] Figure 7 It is a partial exploded view of the connecting rod unit on the right side of the utility model pivoted to the third pivot connection part.

[0030] Figure 8 It is a side view of the utility model. Figure 6

[0031] Figure 9 It is a perspective view of the connecting rod unit and the pedal unit arranged on the left side of the fixed unit of the utility model.

[0032] Figure 10 It is a partial exploded view of the connecting rod unit on the left side of the utility model pivoted to the third pivot connection part.

[0033] Figure 11 It is a side view of the utility model. Figure 9

[0034] Figure 12 It is a perspective view of the resistance unit arranged on the fixed unit of the utility model.

[0035] Figure 13 It is a perspective view of the resistance unit of the utility model from another angle.​​

[0036] Figure 14 Partial perspective view of the resistance unit of the utility model.

[0037] Figure 15 Usage schematic view for moving the treading pieces along the closed path, and making the treading pieces on the right side higher than the treading pieces on the left side.

[0038] Figure 16 Usage schematic view for moving the treading pieces along the closed path, and making the treading pieces on the right side in front of the treading pieces on the left side.

[0039] Figure 17 Usage schematic view for moving the treading pieces along the closed path, and making the treading pieces on the right side lower than the treading pieces on the left side.

[0040] Figure 18 Usage schematic view for moving the treading pieces along the closed path, and making the treading pieces on the right side behind the treading pieces on the left side.

[0041] BRIEF DESCRIPTION OF DRAWINGS 1-fixed unit; 11-base; 111-base body; 112-transverse support seat body; 113-support column; 114-guide wheel; 12-stand; 121-first pivot connection part accommodating groove; 122-second pivot connection part accommodating groove; 13-upper section of stand; 14-front connecting support; 141-left connecting support; 142-right connecting support; 143-supporting sheet body; 15-fixed handrail; 16-side handrail; 17-display screen; 2-tread plate unit; 21-moving handrail; 22-handrail rod; 221-rod section; 222-U-shaped section; 223-handrail rod body joint; 23-tread plate rod; 231-tread plate rod body joint; 24-tread plate bottom rod; 25-tread plate piece; 251-tread plate surface; 252-lower pivot joint; 253-upper pivot joint; 3-linkage rod unit; 31-first rod; 311-first rod body joint; 32-second rod; 33-third rod; 34-fourth rod; 341-fourth rod body joint; 35-rotation shaft connecting piece; 351-clamping groove; 4-resistance unit; 41-output wheel; 42-transmission wheel; 421-transmission rotation shaft; 422-transmission wheel body; 43-tension wheel set; 431-swinging arm; 432-tension wheel body; 433-pull rod; 434-adjusting nut; 44-resistance wheel; 45-first belt; 46-second belt; 5-first pivot connection part; 6-second pivot connection part; 7-third pivot connection part; 71-bearing seat; 72-adjusting screw set; 721-adjusting screw; 73-rotation shaft; a-first distance; b-second distance. DETAILED DESCRIPTION

[0042] The main functions of the elliptical mechanism structure are clearly shown in the following embodiments.

[0043] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The utility model provides a kind of elliptical mechanism structure, including a fixed unit 1, two pedal units 2, two connecting rod units 3, a resistance unit 4, a first pivot joint 5, a second pivot joint 6 and a third pivot joint 7.

[0044] The fixed unit 1 has a base 11, a stand 12, a stand upper section 13, a front connecting bracket 14, two fixed handrails 15, two side handrails 16 and a display screen 17.

[0045] The base 11 extends along a horizontal direction, the stand 12 is fixed to the base 11 and extends along a height direction, the stand upper section 13 extends along the height direction and is fixed to one end of the stand 12 away from the base 11, and the display screen 17 is fixed to one end of the stand upper section 13 away from the stand 12; Specifically, the base 11 has a base body 111 and two transverse support bodies 112, the two transverse support bodies 112 are connected to opposite ends of the base body 111 and are perpendicular to the base body 111, two support columns 113 and two guide wheels 114 are arranged at the bottom of one of the transverse support bodies 112, and only two support columns 113 are arranged at the bottom of the other transverse support body 112.

[0046] The front connecting bracket 14 is connected between the base 11 and the stand 12; Specifically, the front connecting bracket 14 includes a left connecting bracket 141 and a right connecting bracket 142, and the left connecting bracket 141 and the right connecting bracket 142 are arranged at a distance.

[0047] The two fixed handrails 15 are fixed to the two sides of the stand upper section 13, one end of the two side handrails 16 is respectively connected to the opposite sides of the stand 12, and the other end is respectively connected to the other transverse support body 112, so that the two pedal units 2 are located between the two side handrails 16, and the display screen 17 is fixed to one end of the stand upper section 13 away from the stand 12.

[0048] The first, second and third pivot portions 5, 6 and 7 are arranged in the height direction from high to low in sequence on the fixed unit 1, and in the horizontal direction the second pivot portion 6 is between the first and third pivot portions 5 and 7, the first and second pivot portions 5 and 6 are arranged on the upright column 12, and the third pivot portion 7 is arranged on the front connecting bracket 14; specifically, the upright column 12 has a first pivot portion accommodating groove 121 and a second pivot portion accommodating groove 122, the first pivot portion 5 is embedded in the first pivot portion accommodating groove 121, and the second pivot portion 6 is embedded in the second pivot portion accommodating groove 122. The third pivot portion 7 has two bearing seats 71, two sets of adjusting screws 72 and a rotating shaft 73, the two bearing seats 71 are respectively fixed on the left and right connecting brackets 141 and 142, the rotating shaft 73 is rotatably inserted into the two bearing seats 71, and the two sets of adjusting screws 72 are respectively arranged adjacent to the two bearing seats 71, each set of adjusting screws 72 has two adjusting screws 721, and the two adjusting screws 721 are respectively rotatably arranged along the extension direction of the front connecting bracket 14 and abut against the opposite two ends of the corresponding bearing seat 71.

[0049] Referring to Figures 6 to 11 , the two aforementioned pedal units 2 are respectively arranged on the opposite two sides of the fixed unit 1, each pedal unit 2 has a moving handrail 21, a handrail rod 22, a pedal rod 23, a pedal bottom rod 24 and a pedal piece 25, and the pedal piece 25 has a pedal face 251.

[0050] The two ends of the handrail rod 22 are respectively pivotally connected to the first pivot connection 5 and one end of the pedal bottom rod 24, the other end of the pedal bottom rod 24 is pivotally connected to a lower pivot connection point 252 of the pedal member 25, one end of the pedal rod 23 is pivotally connected to an upper pivot connection point 253 of the pedal member 25, the upper pivot connection point 253 and the lower pivot connection point 252 are adjacently arranged along the height direction, the pedal rod 23 has a pedal rod body connection point 231 between the opposite ends, the handrail rod 22 has a handrail rod body connection point 223 between the opposite ends, the pedal rod body connection point 231 is connected to the handrail rod body connection point 223, so that the pedal rod 23 is pivotally connected to the handrail rod 22, the moving handrails 21 are connected to one end of the handrail rod 22, and the two moving handrails 21 have a gradually expanding section and a holding section along the height direction; specifically, the handrail rod 22 comprises a rod-shaped section 221 and a U-shaped section 222 connected to the rod-shaped section 221, the rod-shaped section 221 is connected to the first pivot connection 5, the U-shaped section 222 is connected to one end of the pedal bottom rod 24, the handrail rod body connection point 223 is arranged on the U-shaped section 222, the pedal rod 23 is arranged in the U-shaped section 222 so that the pedal rod body connection point 231 is pivotally connected to the handrail rod body connection point 223. A first distance a from the handrail rod body connection point 223 to one end of the pedal bottom rod 24 connected to the handrail rod 22 is less than a second distance b between the upper pivot connection point 253 and the lower pivot connection point 252.

[0051] The two aforementioned connecting rod units 3 are respectively arranged on the opposite sides of the fixed unit 1 and connected to the two aforementioned pedal units 2, each connecting rod unit 3 has a first rod 31, a second rod 32, a third rod 33, a fourth rod 34 and a rotating shaft connecting piece 35.

[0052] One end of the first rod 31 is pivotally connected to the second pivot connection 6, the other end of the first rod 31 is pivotally connected to one end of the second rod 32, the other end of the second rod 32 and one end of the third rod 33 are pivotally connected to one end of the rotating shaft connecting piece 35, the other end of the rotating shaft connecting piece 35 is pivotally connected to the third pivot connection 7, and the rotating shaft connecting pieces 35 located on both sides of the fixed unit 1 are arranged at 180 degrees in the radial direction of the third pivot connection 7; the first rod 31 has a first rod body joint 311 between the two opposite ends, the fourth rod 34 has a fourth rod body joint 341 between the two opposite ends, one end of the fourth rod 34 is pivotally connected to the first rod body joint 311, the other end of the third rod 33 is pivotally connected to the fourth rod body joint 341, and the other end of the fourth rod 34 is pivotally connected to the other end of the pedal rod 23; Specifically, the first rod 31, the second rod 32, the third rod 33 and the fourth rod 34 are connected to form a parallel four-bar linkage, one end of the second rod 32 is in the shape of a U, and the two opposite ends of the fourth rod 34 and the fourth rod body joint 341 are in the shape of a U. The other end of the rotating shaft connecting piece 35 has a clamping groove 351, the clamping groove 351 clamps the end of the rotating shaft 73, so that the rotating shaft connecting piece 35 rotates synchronously with the rotating shaft 73.

[0053] Please refer to Figure 1 、 Figure 12 、 Figure 13 and Figure 14 The resistance unit 4 is arranged in the fixed unit 1 and connected to the third pivot connection 7, and the two aforementioned pedal units 2 are connected to the resistance unit 4 through the corresponding connecting rod units 3; Specifically, the resistance unit 4 has an output wheel 41, a transmission wheel 42, a tension wheel set 43 and a resistance wheel 44, the output wheel 41 is arranged in the rotating shaft 73 and rotates synchronously with the rotating shaft 73, and the output wheel 41 is arranged in the interval and between the left connecting bracket 141 and the right connecting bracket 142.

[0054] The transmission wheel 42 and the resistance wheel 44 are rotatably arranged on the fixed unit 1, the output wheel 41 is drivingly connected to the transmission wheel 42 through a first belt 45, and the transmission wheel 42 is drivingly connected to the resistance wheel 44 through a second belt 46; specifically, the transmission wheel 42 is arranged on the front connecting bracket 14 close to the stand 12, the front connecting bracket 14 has two support plates 143, the two support plates 143 are respectively provided with a bearing and a bearing seat, the transmission wheel 42 has a transmission shaft 421 and a transmission wheel body 422, the transmission shaft 421 penetrates through the bearing and the bearing seat, the transmission wheel body 422 is fixed on the transmission shaft 421 and rotates synchronously with the transmission shaft 421, the first belt 45 is wound around the output wheel 41 and the transmission shaft 421, and the second belt 46 is wound around the transmission wheel body 422 and the resistance wheel 44, the tension wheel set 43 comprises a swing arm 431, a tension wheel body 432, a pull rod 433 and an adjusting nut 434, the tension wheel body 432 is swingably arranged on one of the support plates 143 through the swing arm 431 and abuts against the first belt 45, and the adjusting nut 434 is adjustably arranged on the pull rod 433, one end of the pull rod 433 is connected to the swing arm 431, the other end of the pull rod 433 penetrates through the right connecting bracket 142 and is limited in position by the adjusting nut 434, so that the force applied by the tension wheel body 432 to the first belt 45 is changed.

[0055] Please refer to Figure 15 、 Figure 16 、 Figure 17 and Figure 18 , when the elliptical mechanism of the utility model is actually used, the two feet are stepped on the two pedal members 25 arranged on the two sides of the fixed unit 1, the pedal members 25 drive the aforementioned pedal unit 2 and the aforementioned connecting rod unit 3, so that the two pedal members 25 move along a closed path, the two pedal members 25 are located on the opposite sides of the center of the closed path, and when the two pedal members 25 move along the horizontal direction to the opposite sides of the center of the closed path, the pedal surfaces 251 of the two pedal members 25 are inclined at an angle towards the center of the closed path, so that the palms of the feet are higher when the feet move to the front edge, and the heels of the feet are higher when the feet move to the rear edge, so that the movement is close to the actual walking or running state.

[0056] From the above description of the embodiments, the operation, use and effects of the utility model can be fully understood, and the above-described embodiments are only preferred embodiments of the utility model, and should not limit the range of the utility model, that is, any simple equivalent changes and modifications made according to the content of the utility model are within the scope of the utility model.

Claims

1. An elliptical mechanism structure, characterized in that, Include: A fixing unit has a base and a column. The base extends in a horizontal direction, and the column is fixed to the base and extends in a vertical direction. The fixing unit has a front connecting bracket that connects the base and the column. The fixing unit has a first pivot, a second pivot, and a third pivot in the vertical direction from high to low. In the horizontal direction, the second pivot is located between the first pivot and the third pivot. The first pivot and the second pivot are located on the column, and the third pivot is located on the front connecting bracket. Two pedal units are respectively disposed on opposite sides of the fixed unit. Each pedal unit has a handrail, a pedal rod, a pedal base rod, and a pedal component. The pedal component has a pedal surface. The two ends of the handrail are respectively pivotally connected to the first pivot part and one end of the pedal base rod. The other end of the pedal base rod is pivotally connected to a lower pivot point of the pedal component. One end of the pedal rod is pivotally connected to an upper pivot point of the pedal component. The upper pivot point and the lower pivot point are arranged adjacent to each other along the height direction. The pedal rod has a pedal rod body joint between its two opposite ends. The handrail has a handrail body joint between its two opposite ends. The pedal rod body joint is connected to the handrail body joint, so that the pedal rod is pivotally connected to the handrail. Two linkage units are respectively disposed on opposite sides of the fixed unit and connected to the two pedal units. Each linkage unit has a first rod, a second rod, a third rod, a fourth rod, and a pivot connector. One end of the first rod is pivotally connected to the second pivot, and the other end of the first rod is pivotally connected to one end of the second rod. The other end of the second rod and one end of the third rod are both pivotally connected to one end of the pivot connector. The other end of the pivot connector is pivotally connected to the third pivot. The pivot connectors located on both sides of the fixed unit are radially clamped at 180 degrees to each other at the third pivot. The first rod has a first rod body contact point between its two opposite ends, and the fourth rod has a fourth rod body contact point between its two opposite ends. One end of the fourth rod is pivotally connected to the first rod body contact point, and the other end of the third rod is pivotally connected to the fourth rod body contact point. The other end of the fourth rod is pivotally connected to the other end of the pedal rod. A resistance unit is disposed on the fixed unit and connected to the third pivot part, and the two pedal units are respectively connected to the resistance unit via the corresponding link unit; Driving the pedal component enables the pedal components located on both sides of the fixed unit to move along a closed path, with the two pedal components located on opposite sides of the center of the closed path during movement; When the two pedal components move and are positioned on opposite sides of the center of the closed path in the horizontal direction, the pedal surfaces of the two pedal components tilt at an angle toward the center of the closed path.

2. The elliptical mechanism structure as described in claim 1, characterized in that, The first, second, third, and fourth links are connected to form a parallel four-link system.

3. The elliptical mechanism structure as described in claim 1, characterized in that, A first distance from the handrail body contact point to one end of the handrail connecting to the pedal base is less than a second distance between the upper pivot contact point and the lower pivot contact point.

4. The elliptical mechanism structure as described in claim 1, characterized in that, Each pedal unit has a movable handrail connected to one end of the handrail bar. The two movable handrails extend along the height direction and have a widening section and a gripping section.

5. The elliptical mechanism structure as described in claim 1, characterized in that, The fixed unit has an upper column section, two fixed handrails and a display screen. The upper column section extends along the height direction and is fixed to the column. The two aforementioned fixed handrails are fixed to both sides of the upper column section. The display screen is fixed to the end of the upper column section away from the column.

6. The elliptical mechanism structure as described in claim 1, characterized in that, The base has a base body and two transverse support seats. The two transverse support seats are connected to opposite ends of the base body. Two support columns and two guide wheels are provided on the transverse support seats.

7. The elliptical mechanism structure as described in claim 6, characterized in that, The fixed unit has two side handrails. One end of each of the two aforementioned side handrails is connected to the opposite sides of the column, and the other end is connected to the aforementioned transverse support body, so that the two aforementioned pedal units are located between the two aforementioned side handrails.

8. The elliptical mechanism structure as described in claim 1, characterized in that, The front connecting bracket includes a left connecting bracket and a right connecting bracket, which are spaced apart. The third pivot part has two bearing seats and a rotating shaft. The two bearing seats are fixed to the left connecting bracket and the right connecting bracket respectively, and the rotating shaft is rotatably inserted into the two bearing seats.

9. The elliptical mechanism structure as described in claim 8, characterized in that, Two sets of adjusting screws are respectively arranged adjacent to the two bearing seats. Each set of adjusting screws has two adjusting screws, and the two adjusting screws are respectively rotatable and abut against the two ends of the corresponding bearing seat.

10. The elliptical mechanism structure as described in claim 8, characterized in that, The resistance unit has an output wheel, a transmission wheel and a resistance wheel. The output wheel is disposed on the rotating shaft and rotates synchronously with the rotating shaft. The transmission wheel and the resistance wheel are rotatably disposed on the fixed unit. The output wheel is driven to the transmission wheel via a first belt, and the transmission wheel is driven to the resistance wheel via a second belt.

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