Four-limb linkage health training vehicle
By designing a four-limb linkage fitness training vehicle, the linkage structure of the linkage plate, linkage rod and pedal is used to solve the problem of the lack of four-limb linkage in existing training equipment, and to enhance the muscle strength and motor coordination of the limbs, making it suitable for home use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHUI TECH HEBEI CO LTD
- Filing Date
- 2025-01-14
- Publication Date
- 2026-07-03
AI Technical Summary
Existing training equipment lacks limb coordination capabilities, which cannot meet the rehabilitation needs of most patients, resulting in poor enhancement of limb muscle strength and motor coordination, and is expensive and unsuitable for home use.
A four-limb linkage rehabilitation training vehicle was designed. Through the linkage structure of linkage plate, linkage rod, pedal and linkage component, the healthy limb drives the rehabilitation training of the affected limb. Combined with gear transmission and steering control mechanism, it realizes full linkage of the four limbs and is equipped with a low cost structure.
It enables coordinated exercise of all four limbs, enhances muscle strength and motor coordination, has a wide range of applications, low cost, is suitable for home use, and is easy to promote.
Smart Images

Figure CN224441654U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rehabilitation exercise technology, and in particular to a four-limb coordinated health training vehicle. Background Technology
[0002] Hemiplegic patients, people with limited mobility, or healthy individuals need training equipment for rehabilitation training or fitness exercises.
[0003] Existing training equipment includes devices that use motors to power the limbs, providing passive movement to help prevent stiffness, but with limited effectiveness and generally high cost, making them unsuitable for home use. Other devices use the patient's own hands to power the legs, often involving ipsilateral upper and lower limb coordination or bilateral upper / lower limb coordination. However, the location of affected and healthy limbs varies from patient to patient, and these devices lack the ability to coordinate all four limbs, failing to meet the rehabilitation needs of most patients and hindering the improvement of limb strength and motor coordination, resulting in poor rehabilitation and fitness outcomes. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a four-limb linkage health training vehicle in response to the above-mentioned technical deficiencies. It solves the problem that existing exercise equipment does not have the function of four-limb linkage, cannot meet the health needs of most patients, is not conducive to enhancing limb muscle strength and motor coordination, and has poor rehabilitation and fitness effects.
[0005] The technical solution adopted by this utility model is: to provide a four-limb coordinated health training vehicle, including a frame, characterized in that it further includes:
[0006] The linkage plate has two, and the two linkage plates are respectively oscillating on the left and right sides of the front part of the frame, and the two linkage plates oscillate back and forth alternately.
[0007] The device has two handles, which are respectively disposed on the upper ends of the two linkage plates.
[0008] A linkage rod is located between the two linkage plates. The linkage rod has linkage parts on both the left and right sides. The middle part of the linkage rod is rotatably mounted on the frame. The linkage parts on both sides are movably connected to the linkage plates on both sides respectively. After the linkage plate on one side swings, it drives the linkage rod to swing. After the linkage rod swings, it drives the linkage plate on the other side to swing.
[0009] The vehicle has two pedals, which are respectively movably disposed on the left and right sides of the front part of the frame.
[0010] The linkage has two components, one of which is hinged to each linkage plate. One end of the linkage acts on the linkage plate and the other end acts on the pedal, for transmission between the linkage plate and the pedal.
[0011] To further optimize this technical solution, the lower part of the linkage plate has a rack portion; it also includes:
[0012] The vehicle has two rear wheels, which are rotatably mounted on the left and right sides of the rear of the frame.
[0013] The vehicle has two front wheels, which are rotatably mounted on the left and right sides of the front of the frame.
[0014] The transmission gear has two gears, which are rotatably mounted on the left and right sides of the frame respectively. The racks on the left and right sides mesh with the two transmission gears respectively. The transmission gears are connected to the front wheel through a one-way bearing to drive the front wheel to rotate in one direction.
[0015] Further optimization of this technical solution also includes:
[0016] The vehicle has two steering transmission mechanisms, with each of the front wheels being movably mounted at the front of the frame via one of the steering transmission mechanisms.
[0017] The vehicle has two drive shafts, which are rotatably mounted on the left and right sides of the front of the frame. The two drive shafts are respectively connected to the power input ends of the two steering transmission mechanisms. Each drive shaft is fitted with a one-way bearing, and each one-way bearing is fitted with a transmission gear. The transmission gear is connected to the front wheel via the one-way bearing, the drive shaft, and the steering transmission mechanism.
[0018] A control lever is rotatably mounted at the front of the vehicle frame, with the upper part of the control lever located above the vehicle frame;
[0019] A steering control assembly, wherein the control lever changes the forward direction of the two front wheels via the steering control assembly.
[0020] To further optimize this technical solution, the upper part of the control lever has a connecting frame, and also includes:
[0021] A positioning seat is disposed above the vehicle frame. The lower part of the positioning seat has a fixing tube, which is fixedly disposed on the vehicle frame. The control rod passes through the fixing tube vertically. The upper side of the positioning seat has several positioning grooves arranged at intervals. The connecting frame is horizontally rotatably disposed on the positioning seat.
[0022] A steering lever is rotatably mounted on the connecting frame in a vertical plane. The steering lever is used to drive the connecting frame to rotate horizontally, and the positioning groove is used to engage the steering lever.
[0023] In a further optimized version of this technical solution, the pedal is movably mounted on the frame via two support plates, namely a first support plate and a second support plate. The lower end of the first support plate is hinged to the frame, and the upper end of the first support plate is hinged to the rear side of the pedal. The lower end of the second support plate is hinged to the frame, and the upper end of the second support plate is hinged to the front side of the pedal. One end of the linkage is hinged to the linkage plate, and the other end is hinged to the middle of the second support plate. The linkage acts on the pedal through the second support plate.
[0024] To further optimize this technical solution, the pedal is tilted, with the front side of the pedal being higher than the rear side.
[0025] To further optimize this technical solution, the linkage part is movably connected to the linkage plate via a ball joint structure, the ball joint structure comprising:
[0026] A ball joint seat is provided on the linkage plate;
[0027] A ball joint head is movably disposed within the ball joint seat, and the linkage part slides through the interior of the ball joint head.
[0028] Further optimization of this technical solution also includes:
[0029] A hand support plate, fitted onto the upper part of the handle, is used to support the patient's hand. The hand support plate has an inclined tail plate on its rear side, which is used to support the arm.
[0030] Further optimization of this technical solution also includes:
[0031] The seat is located at the rear of the frame.
[0032] The beneficial effects of this utility model are as follows:
[0033] 1. Through the linkage of the linkage rod and linkage components, the handle and pedal are fully linked, which can realize the exercise of all four limbs. The healthy limbs can drive the affected limbs for rehabilitation training or fitness exercise. It has a wide range of applications and better results.
[0034] 2. Low cost, suitable for home exercise, and easy to promote. Attached Figure Description
[0035] Figure 1 This is a schematic diagram of the structure from the right rear side view of this utility model;
[0036] Figure 2This is a schematic diagram of the structure from the right side view of this utility model;
[0037] Figure 3 This is a schematic diagram of the front view structure of this utility model;
[0038] Figure 4 For the present utility model Figure 3 A magnified schematic diagram of the structure at point a in the middle;
[0039] Figure 5 For the present utility model Figure 3 A magnified schematic diagram of the structure at point b in the middle;
[0040] Figure 6 This is a schematic diagram of the bottom view structure of this utility model;
[0041] Figure 7 For the present utility model Figure 6 A magnified schematic diagram of the structure at point c in the middle;
[0042] Figure 8 This is a schematic diagram of the front structure of the vehicle frame of this utility model;
[0043] Figure 9 For the present utility model Figure 8 Schematic diagram of the bottom view structure under the current state;
[0044] Explanation of markings in the diagram: 1. Frame; 101. Rear wheel; 102. Front wheel; 103. Steering transmission mechanism; 104. Steering control assembly; 105. Seat; 2. Linkage plate; 201. Rack section; 3. Handlebar; 301. Handrest plate; 302. Tailgate; 4. Linkage rod; 401. Linkage part; 5. Pedal; 501. First support plate; 502. Second support plate; 6. Linkage component; 7. Transmission gear; 701. One-way bearing; 702. Drive shaft; 8. Positioning seat; 801. Fixing tube; 802. Positioning groove; 803. Control rod; 804. Connecting frame; 805. Steering lever; 9. Ball joint structure; 901. Ball joint seat; 902. Ball joint head. Detailed Implementation
[0045] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0046] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0047] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0048] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0049] like Figure 1-9 As shown, the four-limb coordinated fitness training vehicle includes a frame 1, and further includes: two linkage plates 2, which are respectively swaying on the left and right sides of the front of the frame 1, and the two linkage plates 2 swing back and forth alternately; two handles 3, which are respectively located on the upper ends of the two linkage plates 2; a linkage rod 4, located between the two linkage plates 2, with linkage parts 401 on both the left and right sides of the linkage rod 4, the middle of the linkage rod 4 being rotatably mounted on the frame 1, and the linkage parts 401 on both sides being movably connected to the linkage plates 2 on both sides, the linkage rod 2 on one side swinging to drive the linkage rod 4 to swing, and the linkage rod 4 swinging to drive the linkage plate 2 on the other side to swing; two pedals 5, which are respectively movably located on the left and right sides of the front of the frame 1; and two linkage components 6, each linkage plate 2 having one linkage component 6 hinged to it, one end of the linkage component 6 acting on the linkage plate 2, and the other end acting on the pedal 5, for transmission between the linkage plate 2 and the pedal 5. It also includes: a seat 105, located at the rear of the frame 1.
[0050] When in use, the upper part of the linkage plate 2 is oscillating on the frame 1. The upper end of the linkage plate 2 is fixedly connected to the handle 3 so that the patient can hold the upper part of the handle 3. The pedal 5 moves on the frame 1. The patient can place both feet on the two pedals 5 respectively. Through the connection of the linkage rod 4, when one side of the linkage plate 2 swings, it can drive the other side of the linkage plate 2 to swing. The two linkage plates 2 can be set to swing in opposite directions, which conforms to the swinging mode when a person walks.
[0051] Taking the patient's right arm as the healthy limb as an example, when the right hand pushes the handle 3 forward, the right linkage plate 2 swings backward. The right linkage plate 2 drives the right linkage rod 4 to swing backward. Since the middle of the linkage rod 4 rotates with the frame 1, it rotates around the middle, and the left part of the linkage rod 4 swings forward. At this time, the left part of the linkage rod 4 pushes the left linkage plate 2 to swing forward, and the left handle 3 swings backward, thus moving the patient's left hand. At the same time, when the linkage plates 2 on both sides swing back and forth, the pedal 5 can move back and forth through the linkage 6, thereby moving the patient's legs. The pedals 5 on both sides can move back and forth alternately, which conforms to the swinging habits of the limbs when walking. That is, when the right handle 3 swings forward, the right linkage plate 2 swings backward, driving the right pedal 5 to move backward through the linkage 6. At the same time, when the left handle 3 swings backward, the left linkage plate 2 swings forward, driving the left pedal 5 to move forward through the linkage 6. This achieves coordinated limb exercise.
[0052] When both feet are healthy limbs, the alternating movement of the feet can drive the pedal 5 to move alternately, which in turn drives the linkage plate 2 to swing through the linkage 6, thus driving the movement of both hands. Straps can also be installed on the pedal 5 to secure the patient's feet to the pedal 5, facilitating the reciprocating movement of the pedal 5 with a single foot.
[0053] A seat 105 is installed on the frame 1 to facilitate patients to sit on the seat 105 for rehabilitation training or fitness exercises.
[0054] Furthermore, the lower part of the linkage plate 2 has a rack portion 201; it also includes: two rear wheels 101, which are rotatably disposed on the left and right sides of the rear of the frame 1; two front wheels 102, which are rotatably disposed on the left and right sides of the front of the frame 1; and two transmission gears 7, which are rotatably disposed on the left and right sides of the frame 1 respectively. The rack portions 201 on the left and right sides are respectively engaged with the two transmission gears 7 for transmission. The transmission gears 7 are transmitted to the front wheels 102 through one-way bearings 701, and are used to drive the front wheels 102 to rotate in one direction.
[0055] In use, the linkage plate 2, through a gear structure, drives the front wheel 102 to rotate, improving the exercise effect and increasing the enjoyment of training. The frame 1 can move forward, providing the patient with a greater sense of security. The rack section 201 can be arc-shaped. When the lower part of the linkage plate 2 swings forward, the rack section 201 drives the transmission gear 7 to rotate, forming a forward rotation. The transmission gear 7 transmits the rotation to the front wheel 102 through the one-way bearing 701, thus achieving forward movement. When the lower part of the linkage plate 2 swings backward, the rack section 201 drives the transmission gear 7 to rotate in the opposite direction. At this time, the one-way bearing 701 does not transmit power, meaning the front wheel 102 will not rotate backward, achieving unidirectional forward movement. The linkage plates 2 on both sides swing forward alternately, thus achieving a more continuous forward movement.
[0056] Furthermore, it also includes: two steering transmission mechanisms 103, each front wheel 102 being movably mounted at the front of the frame 1 via one steering transmission mechanism; two drive shafts 702, each rotatably mounted on the left and right sides of the front of the frame 1, the two drive shafts 702 being respectively connected to the power input ends of the two steering transmission mechanisms 103, each drive shaft 702 being fitted with a one-way bearing 701, and each one-way bearing 701 being fitted with a transmission gear 7, the transmission gear 7 being connected to the front wheel 102 via the one-way bearing 701, the drive shaft 702, and the steering transmission mechanism 103; a control lever 803, rotatably mounted at the front of the frame 1, with the upper part of the control lever 803 located above the frame 1; and a steering control assembly 104, through which the control lever 803 changes the forward direction of the two front wheels 102.
[0057] In use, the steering control component 104 is existing technology. It can drive the two front wheels 102 to deflect at a certain angle by rotating the control lever 803, thereby adjusting the forward direction. The steering transmission mechanism is existing technology. When the front wheels 102 deflect to adjust the direction, the transmission gear 7 still transmits power to the front wheels 102 through the steering transmission mechanism.
[0058] Furthermore, the upper part of the control lever 803 has a connecting frame 804, and also includes: a positioning seat 8, which is disposed above the frame 1, and the lower part of the positioning seat 8 has a fixing tube 801, which is fixedly disposed on the frame 1. The control lever 803 passes through the fixing tube 801 vertically. The upper side of the positioning seat 8 has several spaced positioning grooves 802. The connecting frame 804 is horizontally rotatably disposed on the positioning seat 8; and a steering lever 805, which is rotatably disposed on the connecting frame 804 in a vertical plane. The steering lever 805 is used to drive the connecting frame 804 to rotate horizontally, and the positioning grooves 802 are used to engage the steering lever 805.
[0059] In use, the positioning seat 8 is fixed above the frame 1, allowing the patient to manually operate the control lever 803 to adjust the direction. The positioning seat 8 can be provided with at least three positioning slots 802, with the middle positioning slot 802 located in the center. When the steering lever 805 is in the forward / backward direction, the steering lever 805 can be engaged in the middle positioning slot 802. When it is necessary to adjust the direction, the steering lever 805 is lifted up, disengaging from the middle positioning slot 802, and then the steering lever 805 is rotated horizontally, causing the control lever 803 to rotate, thereby adjusting the direction of the front wheel 102.
[0060] Furthermore, the pedal 5 is movably mounted on the frame 1 via two support plates, namely a first support plate 501 and a second support plate 502. The lower end of the first support plate 501 is hinged to the frame 1, and the upper end of the first support plate 501 is hinged to the rear side of the pedal 5. The lower end of the second support plate 502 is hinged to the frame 1, and the upper end of the second support plate 502 is hinged to the front side of the pedal 5. One end of the linkage 6 is hinged to the linkage plate 2, and the other end is hinged to the middle of the second support plate 502. The linkage 6 acts on the pedal 5 through the second support plate 502. The pedal 5 is tilted, with the front side of the pedal 5 higher than the rear side.
[0061] In use, the first support plate 501 and the second support plate 502 support the pedal 5 and restrict its movement trajectory. The two support plates swing back and forth, causing the pedal 5 to move back and forth. The pedal 5 is tilted, and the tilt angle changes accordingly during these movements, driving the foot's forward and backward movement as well as its up and down motion. The second support plate 502 may be longer than the first support plate 501, making the pedal 5 higher in the front and lower in the back, allowing the patient's foot to comfortably rest on it. The linkage 6 may be a plate-like structure, hinged to allow the linkage plate 2 and the second support plate 502 to interact, achieving linkage between the upper and lower limbs.
[0062] Furthermore, the linkage part 401 is movably connected to the linkage plate 2 through the ball joint structure 9. The ball joint structure 9 includes: a ball joint seat 901, which is disposed on the linkage plate 2; and a ball joint head 902, which is movably disposed in the ball joint seat 901. The linkage part 401 slides through the inside of the ball joint head 902.
[0063] In use, when the two linkage plates 2 swing back and forth alternately, the distance between the connecting lines of the two linkage plates 2 also changes. The linkage rod 4 is connected through the ball joint structure 9, which can adapt to changes in length and angle, realizing the swing linkage of the two linkage plates 2. The middle part of the linkage plate 2 can be rotatably sleeved on the fixed tube 801, or rotatably mounted on the frame 1. The rotatable connection can be a clearance fit, or it can be raised and lowered relative to the frame 1. When the linkage plate 2 swings, the ball joint seat 901 has a change in vertical height during the swing process. The height of the ball joint seats 901 on both sides is the same, but because the swing radius is small and the back-and-forth swing amplitude is small, the vertical position change is small. The clearance fit at the rotatable connection provides space for the small vertical height change of the linkage rod 4. Alternatively, there is a movable clearance between the linkage part 401 and the ball joint head 902.
[0064] The ball joint head 902 moves within the ball joint seat 901 to adapt to angle changes. The linkage part 401 can be a smooth rod structure, which slides within the ball joint head 902 and passes through the ball joint head 902 to adapt to length changes.
[0065] Furthermore, it also includes: a hand support plate 301, which is sleeved on the upper part of the handle 3 and is used to support the patient's hand. The hand support plate 301 has an inclined tail plate 302 on the rear side, which is used to support the arm.
[0066] When in use, the tail plate 302 is tilted downwards and positioned behind the hand support plate 301. The patient holds the upper end of the handle 3 and places the side of their palm on the hand support plate 301. At the same time, the wrist or the side of the arm closest to the hand can be placed on the tail plate 302 to support the hand.
[0067] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. A quadrilateral linkage exercise cycle comprising a frame (1), characterised in that, Also includes: The linkage plate (2) has two, and the two linkage plates (2) are respectively swayed on the left and right sides of the front part of the frame (1), and the two linkage plates (2) sway back and forth alternately; Two handles (3) are provided, and the two handles (3) are respectively provided on the upper ends of the two linkage plates (2); Linkage rod (4) is located between the two linkage plates (2). Linkage rod (4) has linkage parts (401) on both the left and right sides. The middle part of linkage rod (4) is rotatably mounted on the frame (1). The linkage parts (401) on both sides are movably connected to the linkage plates (2) on both sides respectively. After the linkage plate (2) on one side swings, it is used to drive the linkage rod (4) to swing. After the linkage rod (4) swings, it is used to drive the linkage plate (2) on the other side to swing. The vehicle has two pedals (5), which are respectively movably disposed on the left and right sides of the front part of the frame (1); There are two linkage components (6), and each linkage plate (2) is hinged to one linkage component (6). One end of the linkage component (6) acts on the linkage plate (2) and the other end acts on the pedal (5) for transmission between the linkage plate (2) and the pedal (5).
2. The quadlink exercise cycle of claim 1 wherein: The lower part of the linkage plate (2) has a rack portion (201); it also includes: The rear wheel (101) has two, and the two rear wheels (101) are rotatably disposed on the left and right sides of the rear of the frame (1); Two front wheels (102) are rotatably disposed on the left and right sides of the front part of the frame (1); The transmission gear (7) has two gears, which are rotatably disposed on the left and right sides of the frame (1). The rack portions (201) on the left and right sides are respectively meshed with the two transmission gears (7). The transmission gears (7) are connected to the front wheel (102) through a one-way bearing (701) to drive the front wheel (102) to rotate in one direction.
3. The quadlink exercise cycle of claim 2 wherein: Also includes: The steering transmission mechanism (103) has two parts, and each of the front wheels (102) is movably disposed at the front of the frame (1) via one of the steering transmission mechanisms (103); There are two drive shafts (702), which are rotatably disposed on the left and right sides of the front part of the frame (1). The two drive shafts (702) are respectively connected to the power input ends of the two steering transmission mechanisms (103). Each drive shaft (702) is fitted with a one-way bearing (701), and each one-way bearing (701) is fitted with a transmission gear (7). The transmission gear (7) is connected to the front wheel (102) through the one-way bearing (701), the drive shaft (702) and the steering transmission mechanism (103). A control lever (803) is rotatably mounted on the front of the frame (1), and the upper part of the control lever (803) is located above the frame (1); A steering control assembly (104) is provided, wherein the control lever (803) changes the forward direction of the two front wheels (102) via the steering control assembly (104).
4. The quadlink exercise cycle of claim 3 wherein: The upper part of the control lever (803) has a connecting bracket (804), and also includes: A positioning seat (8) is provided above the frame (1). The lower part of the positioning seat (8) has a fixing tube (801). The fixing tube (801) is fixedly installed on the frame (1). The control rod (803) passes through the fixing tube (801) vertically. The upper side of the positioning seat (8) has several positioning slots (802) arranged at intervals. The connecting frame (804) is horizontally rotatably installed on the positioning seat (8). A steering lever (805) is rotatably mounted on the connecting frame (804) in a vertical plane. The steering lever (805) is used to drive the connecting frame (804) to rotate horizontally. The positioning groove (802) is used to engage the steering lever (805).
5. The quadlink exercise cycle of claim 1 wherein: The pedal (5) is movably mounted on the frame (1) via two support plates, namely a first support plate (501) and a second support plate (502). The lower end of the first support plate (501) is hinged to the frame (1), and the upper end of the first support plate (501) is hinged to the rear side of the pedal (5). The lower end of the second support plate (502) is hinged to the frame (1), and the upper end of the second support plate (502) is hinged to the front side of the pedal (5). One end of the linkage member (6) is hinged to the linkage plate (2), and the other end is hinged to the middle of the second support plate (502). The linkage member (6) acts on the pedal (5) through the second support plate (502).
6. The four-limb coordinated rehabilitation training vehicle according to claim 5, characterized in that, The pedal (5) is inclined, with the front side of the pedal (5) being higher than the rear side.
7. The quadlink exercise cycle of claim 1 wherein: The linkage part (401) is movably connected to the linkage plate (2) via a ball joint structure (9), the ball joint structure (9) comprising: A ball joint seat (901) is provided on the linkage plate (2); A ball joint head (902) is movably disposed within the ball joint seat (901), and the linkage part (401) slides through the interior of the ball joint head (902).
8. The quadlink exercise cycle of claim 1 wherein: Also includes: A hand support plate (301) is fitted onto the upper part of the handle (3) and is used to support the patient's hand. The hand support plate (301) has an inclined tail plate (302) on the rear side, which is used to support the arm.
9. The quadlink exercise cycle of claim 1 wherein, Also includes: A seat (105) is located at the rear of the frame (1).