WO2015054987A1 - 一种俯卧式自行车 - Google Patents
一种俯卧式自行车 Download PDFInfo
- Publication number
- WO2015054987A1 WO2015054987A1 PCT/CN2014/073336 CN2014073336W WO2015054987A1 WO 2015054987 A1 WO2015054987 A1 WO 2015054987A1 CN 2014073336 W CN2014073336 W CN 2014073336W WO 2015054987 A1 WO2015054987 A1 WO 2015054987A1
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- WO
- WIPO (PCT)
- Prior art keywords
- pair
- frame
- knee
- hinged
- support
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M1/00—Rider propulsion of wheeled vehicles
- B62M1/36—Rider propulsion of wheeled vehicles with rotary cranks, e.g. with pedal cranks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K21/00—Steering devices
- B62K21/12—Handlebars; Handlebar stems
- B62K21/125—Extensions; Auxiliary handlebars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K3/00—Bicycles
- B62K3/005—Recumbent-type bicycles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K3/00—Bicycles
Definitions
- the present invention relates to a bicycle, and more particularly to a prone bicycle.
- the handle of the bicycle supports part of the rider's upper limb weight
- the ankle supports the weight of the rider's lower limbs
- the saddle supports most of the rider's weight.
- the support points of the rider are: the support of the legs on the pedals, the support of the thighs and buttocks on the saddle, the support of the chest and shoulders in the armpit support, Or the support of the shoulder pad and the bodice, and the support of the arms and forearms on the handle. It is not difficult to see that some of the support points are unreasonable or not effective.
- the rider's legs are basically horizontal, and the weight of the legs can no longer be supported by the foot pedals, if no special design of ankles is provided, such as Ankle with a foot cover, the leg is in the process of squatting It is possible to fall off the ankle.
- using the saddle to provide support is also unreasonable in the prone position.
- the use of the saddle to provide support is the only option and the most effective. Support, however, in the prone position, the rider's body is basically horizontal, the saddle can not provide effective support, especially can not effectively support the buttocks, at best can only be provided in the lower jaw between the legs Limited support.
- the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and to provide a prone bicycle which adopts a multi-point support of dynamic and static combination, improves riding comfort and riding efficiency, and has a crawling fitness function.
- the present invention adopts the following technical solutions:
- a prone bicycle includes a frame, a front wheel, a rear wheel, a transmission mechanism for driving the rear wheel, and a pedaling mechanism for driving the transmission mechanism, wherein the front wheel and the rear wheel are respectively disposed at a front portion of the frame and In the rear part, the front part of the frame is provided with a forearm support mechanism, and a knee dynamic support mechanism that is synchronously moved with the pedaling mechanism is disposed between the pedaling mechanism and the frame.
- the transmission mechanism includes a driven sprocket, a driving sprocket and a chain, the driven sprocket is mounted on the rear wheel, the driving sprocket is disposed at a lower rear portion of the frame, and the chain is wound around the driven The sprocket and the driving sprocket; the pedaling mechanism comprises a pair of cranks and a pair of pedals respectively disposed on two sides of the frame, one end of each crank is fixed to the center of the driving sprocket, and the other end is hinged to the foot pedal.
- the knee dynamic support mechanism comprises a pair of swing bars, a pair of links and a pair of knee support pads respectively arranged on two sides of the frame, the upper ends of the swing bars are hinged to the rear upper part of the frame, and one end of each link and the pendulum The lower end of the rod is hinged, and the other end is hinged to the crank.
- the swing rod, the connecting rod and the crank on the same side of the driving sprocket constitute a set of crank rocker mechanisms, and each knee support cushion is mounted on the swing rod through a seat suspension The connection to the connecting rod.
- the knee dynamic support mechanism comprises a pair of swinging rods, a pair of connecting rods and a pair of knee supporting pads respectively arranged on two sides of the frame, the upper ends of the swinging rods are hinged to the upper middle part of the frame, and one end of each connecting rod and the pendulum The lower end of the rod is hinged, and the other end is hinged to the crank.
- the swing rod, the connecting rod and the crank on the same side of the driving sprocket constitute a set of crank rocker mechanisms, and the knee support pads are mounted on the connecting rod through a seat suspension Central.
- the knee dynamic support mechanism comprises a pair of swinging rods, a pair of connecting rods and a pair of knee supporting pads respectively arranged on two sides of the frame, the upper ends of the swinging rods are hinged to the upper middle part of the frame, and one end of each connecting rod and the pendulum
- the lower end of the rod is hinged, and the other end is provided with a U-shaped connecting head, the U-shaped connecting head is hinged with the rotating shaft of the foot pedal, and the swinging rod, the connecting rod and the crank on the same side of the driving sprocket constitute a set of crank rocker
- each knee support pad is installed in a middle portion of the connecting rod through a seat, and the bearing support points of the knee supporting pad and the support are located directly above the connecting rod.
- the transmission mechanism includes a driven sprocket, a driving sprocket and a chain, the driven sprocket is mounted on the rear wheel, the driving sprocket is disposed at a rear upper portion of the frame, and the chain is wound around the driven The sprocket and the driving sprocket; the pedaling mechanism comprises a pair of cranks and a pair of pedals respectively disposed on two sides of the frame, one end of each crank is fixed to the center of the driving sprocket, and the other end is hinged to the foot pedal.
- the knee dynamic support mechanism comprises a pair of swinging rods, a pair of connecting rods and a pair of knee supporting cushions respectively arranged on two sides of the frame, wherein the lower ends of the swinging rods are hinged to the middle and lower parts of the frame, and one end of each connecting rod and the pendulum
- the upper end of the rod is hinged, and the other end is provided with a U-shaped connecting head, the U-shaped connecting head is hinged with the rotating shaft of the foot pedal, and the swinging rod, the connecting rod and the crank on the same side of the driving sprocket constitute a set of crank rocker
- each knee support pad is installed in a middle portion of the connecting rod through a seat, and the bearing support points of the knee supporting pad and the support are located directly above the connecting rod.
- the knee dynamic support mechanism comprises a pair of guide rails, a pair of connecting rods and a pair of knee support pads respectively arranged on two sides of the frame, each rail is fixed on the frame, and one end of each link is slidably disposed on the guide rail, and One end is provided with a U-shaped connecting head, the u-shaped connecting head is hinged with the rotating shaft of the foot pedal, and the guide rail, the connecting rod and the crank located on the same side of the driving sprocket constitute a set of crank slider mechanism, and each knee supporting cushion The fulcrum of the knee support pad and the support is located directly above the connecting rod by a seat mounted on the middle of the connecting rod.
- the transmission mechanism includes a driven sprocket, a driving sprocket and a chain, the driven sprocket is mounted on the rear wheel, the driving sprocket is disposed in a middle portion of the frame, and the chain is wound around the driven chain
- the pedaling mechanism comprises a pair of cranks, a pair of pedals and a pair of pedal links respectively arranged on two sides of the frame, and one end of each crank is fixed to the center of the driving sprocket, and each pedal is connected One end of the rod is hinged to the crank and the other end is hinged to the foot pedal.
- the knee dynamic support mechanism includes a pair of swing bars and a pair of knee support pads respectively disposed on two sides of the frame, the lower ends of the swing bars are hinged to the lower rear portion of the frame, and the upper end is hinged with the rotating shaft of the pedals.
- the swing lever, the pedal link and the crank on the same side of the drive sprocket constitute a set of crank rocker mechanisms, and each knee support cushion is mounted on the pedal link through a seat suspension Central.
- the knee dynamic support mechanism includes a pair of swing bars and a pair of knee support pads respectively disposed on two sides of the frame, the upper ends of the swing bars are hinged to the rear upper portion of the frame, and the lower ends are hinged with the rotating shaft of the pedals.
- the swing lever, the pedal link and the crank on the same side of the drive sprocket constitute a set of crank rocker mechanisms, and each knee support cushion is mounted on the middle of the pedal link through a seat suspension.
- the knee dynamic support mechanism comprises a pair of rails and a pair of knee support pads respectively disposed on two sides of the frame, each rail is fixed on the frame, one end of each pedal link is hinged to the crank, and the other end is provided with a U-shaped connection.
- the head is hinged to the shaft of the foot pedal through the U-shaped joint, the u-shaped joint is slidably disposed on the guide rail, and the guide rail, the pedal link and the crank on the same side of the active sprocket constitute a set of crank slider mechanism.
- Each knee support pad is mounted in the middle of the pedal link by a seat, and the bearing support points of the knee support pad and the support are located directly above the pedal link.
- the transmission mechanism includes a rotating shaft of the rear wheel;
- the pedaling mechanism includes a pair of cranks and a pair of foot pedals respectively disposed at two ends of the rotating shaft, one end of each crank is fixed to the center of the driving sprocket, and the other end is connected with the foot pedal Hinged.
- the knee dynamic support mechanism comprises a pair of swinging rods, a pair of connecting rods and a pair of knee supporting pads respectively arranged on two sides of the rotating shaft, and the upper ends of the swinging rods are hinged to the upper middle part of the frame, and one end of each connecting rod and the swinging rod The lower end is hinged, the other end is hinged to the crank, and the swing rod, the connecting rod and the crank on the same side of the rotating shaft constitute a set of crank rocker mechanisms, and the knee support pads are mounted on the swing rod and the connecting rod through a seat suspension Connection.
- the forearm support mechanism includes a handle and an elbow support pad, the handle is coupled to an upper portion of the front fork of the frame, and the elbow support pad is disposed at a rear of the handle.
- An upper limb support handle is disposed under the forearm support mechanism, and the upper limb support handle is coupled to a middle portion of the front fork of the frame.
- the foot pedal is provided with a foot cover for preventing the foot from coming off the foot pedal.
- An elastic member for damping damping is provided between the knee support pad and the support.
- the prone bicycle of the present invention has a forearm support mechanism at a front portion of the frame, and a knee dynamic support mechanism that is synchronously moved with the pedaling mechanism between the pedaling mechanism and the frame, and the forearm support mechanism realizes the upper body Static support, the knee dynamic support mechanism is the main dynamic support for the lower body, and the pedaling mechanism can be used as the auxiliary dynamic support for the lower body.
- This dynamic and static multi-point support scheme spreads the weight of the rider's body to multiple The support point reduces the load of the single support point, perfectly solves the support problem of the human gravity under the prone posture, improves the comfort of riding under the prone posture, and is beneficial to long-distance riding; reduces the existing human body under the riding posture
- the side effects of gravity by reasonably adjusting the weight of the person while riding, can also use the gravity of the human body to do work, thereby improving the riding efficiency;
- the prone riding style with the knee support is very similar to the movement when the human crawls, so that the rider can be provided with a crawling-like fitness function.
- Embodiment 1 is a schematic perspective view of a first perspective view of Embodiment 1 of the present invention.
- Embodiment 1 of the present invention is a schematic perspective view of a second perspective view of Embodiment 1 of the present invention.
- Fig. 3 is a perspective view showing the three-dimensional structure of the first embodiment of the present invention.
- Embodiment 4 is a schematic perspective view of a second perspective view of Embodiment 2 of the present invention.
- Fig. 5 is a perspective view showing the three-dimensional structure of the first embodiment of the present invention.
- Figure 6 is a perspective view showing the second perspective of the third embodiment of the present invention.
- Fig. 7 is a perspective view showing the three-dimensional structure of the first embodiment of the present invention.
- Figure 8 is a perspective view showing the second perspective of the fourth embodiment of the present invention.
- Fig. 9 is a perspective view showing the three-dimensional structure of the first embodiment of the present invention.
- Figure 10 is a perspective view showing the second perspective of the fifth embodiment of the present invention.
- Figure 11 is a perspective view showing the first perspective of the sixth embodiment of the present invention.
- Figure 12 is a perspective view showing the second perspective of the sixth embodiment of the present invention.
- Figure 13 is a perspective view showing the first perspective of the seventh embodiment of the present invention.
- Figure 14 is a perspective view showing the second perspective of the seventh embodiment of the present invention.
- Figure 15 is a perspective view showing the first perspective of the eighth embodiment of the present invention.
- Figure 16 is a perspective view showing the second perspective of the eighth embodiment of the present invention.
- Figure 17 is a perspective view showing the first perspective of the ninth embodiment of the present invention.
- Figure 18 is a perspective view showing the second embodiment of the present invention:
- Figure 19 is a perspective view showing the first perspective of the embodiment 10 of the present invention.
- Figure 20 is a perspective view showing the second perspective of the embodiment 10 of the present invention.
- Figure 21 is a schematic view showing the structure of the forearm supporting mechanism in the first embodiment.
- Figure 22 is a schematic view showing the structure of the forearm support mechanism with adjustable front and rear distances.
- Figure 23 is a schematic view showing the cantilever mounting structure of the knee support pad in the first embodiment.
- Figure 24 is a schematic view of a cantilevered mounting structure of another knee support pad.
- Figure 25 is a schematic view showing the non-cantilever mounting structure of the knee support pad in the third embodiment.
- Figure 26 is a schematic view showing a non-cantilever mounting structure of another knee support pad.
- Figure 27 is a schematic view showing the support structure of a guide rail.
- Figure 28 is a schematic view showing the support structure of another guide rail.
- FIG. 1 and FIG. 2 show a first embodiment of a prone bicycle according to the present invention, the prosthetic bicycle including a frame 1, a front wheel 2, a rear wheel 3, and a transmission mechanism for driving the rear wheel 3. 4 and a pedaling mechanism 5 for driving the transmission mechanism 4, the front wheel 2 and the rear wheel 3 are respectively disposed at the front and the rear of the frame 1, and the front portion of the frame 1 is provided with a forearm supporting mechanism 6, and the pedaling mechanism 5 A knee dynamic support mechanism 7 that moves in synchronization with the pedal mechanism 5 is disposed between the frame 1.
- the present invention is based on human anatomy, bionics and ergonomics, and has been carefully studied. Humans use the elbow and knees to lie in the prone position, borrowing the support method of human crawling, and propose a multi-point support scheme combining static support and dynamic support. Since the upper body of the rider is basically still, the upper body adopts the forearm support mechanism. 6 Realize the static support. Since the lower limbs of the rider are moving, the lower body adopts the knee dynamic support mechanism 7 which moves synchronously with the pedaling mechanism 5 as the main dynamic support, and the pedaling mechanism 5 can be used as the auxiliary dynamic support.
- the combined multi-point support scheme distributes the weight of the rider's body to multiple support points, which reduces the load on a single support point, perfectly solves the problem of support of human gravity under prone posture, and improves the riding under prone posture.
- Comfort which is conducive to long-distance riding; reduces the gravity of the human body under the existing riding posture
- Side effects by adjusting the weight of the person during the ride, you can also use the gravity of the human body to improve the riding efficiency.
- This kind of prone riding with the forearm and knee support is very similar to the movement when the human crawls, so it can be used for riding.
- the driver provides a fitness function like crawling.
- the forearm support mechanism 6 of the present embodiment includes a pair of handles 61 and a pair of elbow support pads 62.
- the pair of handles 61 are coupled to the upper portion of the front fork 11 of the frame 1, and are provided with a front narrow rear width.
- the front end of the handle 61 is tilted upward, and the elbow support pad 62 is disposed at the rear end of the handle 61.
- the elbow support pad 62 can disperse the elbow force to improve the operation comfort;
- the upper arm support mechanism 6 is provided with the upper limb support handle 8
- the upper limb support handle 8 is connected to the middle of the front fork 11 of the frame 1. The rider can use the forearm support mechanism 6 to support the upper body during the riding process.
- the elbow is mainly supported by the elbow, and the upper limb support handle 8 can also be selected.
- Support for the upper body mainly relying on the palm and wrist force, two kinds of support
- the model can be converted at any time, so that the rider can relieve fatigue by changing the position to adapt to the needs of long-distance riding.
- the handle 61 and the elbow support pad 62 may be designed as an angle-adjustable structure or as a front-rear adjustable structure as shown in FIG. 22 to accommodate the needs of the rider of different physical conditions.
- the upper limb support handle 8 can also be designed as a high and low position adjustable structure.
- the transmission mechanism 4 includes a driven sprocket 41, a drive sprocket 42 and a chain 43.
- the driven sprocket 41 is mounted on the rear wheel 3, and the drive sprocket 42 is disposed at the lower rear portion of the frame 1, the chain 43 is disposed on the driven sprocket 41 and the driving sprocket 42;
- the stepping mechanism 5 includes a pair of cranks 51 and a pair of footrests 52 disposed on both sides of the frame 1, and the pair of cranks 51 are arranged at 180 degrees.
- Each crank 51-end is fixedly connected to the center of the driving sprocket 42, and the other end is hinged to the footboard 52.
- the footboard 52 is provided with a foot cover 521 for preventing the foot from coming off the footboard 52.
- the foot cover 521 is provided by a foot An instep strap, a toe strap and a connecting strap, the instep strap and the toe strap are mounted at 90 degrees, and the two ends are respectively fixed at the two ends of the ankle shaft, the connecting strap is at the middle portion thereof, and the strap is strapped and The toes are connected to form two ⁇ -belts.
- the knee dynamic support mechanism 7 includes a pair of swing rods 71, a pair of links 72 and a pair of knee support pads 73, which are respectively disposed on two sides of the frame 1, and the upper ends of the swing rods 71 are hinged to the rear upper portion of the frame 1, each The connecting rod 72 is hinged to the lower end of the swinging rod 71, and the other end is hinged to the crank 51.
- the swinging rod 71, the connecting rod 72 and the crank 51 on the same side of the driving sprocket 42 constitute a set of crank rocker mechanisms, and the swinging rod 71 And each connecting rod 72 is provided with a plurality of connecting holes for adjusting the length.
- the length can be adjusted to adapt to the length of the lower limbs of different riders, and each knee supporting pad 73 passes through a branch.
- the seat 74 is suspended from the joint of the swing lever 71 and the link 72, and an elastic member 76 for damping damping is disposed between the knee support pad 73 and the support 74.
- the knee support pad 73 of the present embodiment is designed according to the shape of the knee to reduce the pressure and discomfort to the knee.
- the holder 74 is composed of a cantilever shaft 741 and a "seat 746".
- the cross seat 746 is mounted on the cantilever shaft 741, one end of the cantilever shaft 741 is connected to the connecting rod 72, and the elastic member 76 is a coil spring 762 disposed at the four ends of the cross seat 746.
- the support 74 can also be composed of a cantilever shaft 741, a sleeve 742 and a spring clip 743.
- the elastic member 76 is composed of four arcuate springs 761 connected between the base sleeve and the knee support pad 73, and the spring clip 743 is provided.
- the spring clip 743 is fixed to one end of the cantilever shaft 741 by a sleeve 742 and a nut, and a non-slip spacer 77 is provided between the spring clip 743 and the sleeve 742, and the cantilever shaft 741 The other end is connected to the connecting rod 72.
- the loosening nut can adjust the pitch angle of the spring clip 743 and the connected elastic member 76 and the knee support pad 73, and the spring clip 743 can be placed in the straight line of the bow spring 761.
- the front and rear position is fine-tuned so that the rider can find the most comfortable knee support angle and position.
- the tightening nut can be tightened under the aid of the anti-slip spacer 77 to prevent the knee support pad 73 from rotating arbitrarily.
- the feet are stepped on the foot pedal 52 and the foot with the foot cover 521
- the pedal 52 provides two auxiliary dynamic supports so that The lower limb can be reliably supported, and the pedal 52 can be flexibly and effectively moved in a circular motion.
- the rider's thigh swings with the swing lever 71, and the knee moves along the circular path, the buttocks No up and down movement.
- FIG. 3 and FIG. 4 show a second embodiment of a prone bicycle according to the present invention.
- This embodiment is basically the same as Embodiment 1, except that the knee dynamic support mechanism 7 is provided on the frame 1 .
- the other end is hinged to the crank 51.
- the swinging rod 71, the connecting rod 72 and the crank 51 on the same side of the driving sprocket 42 constitute a set of crank rocker mechanisms, and the knee supporting pads 73 are suspended and connected by a seat 74.
- the length of the connecting rod 72 is long, and a plurality of adjusting holes are provided in the middle portion thereof to adjust the position of the knee supporting pad 73 to adapt to the length of the legs of different riders, and the swing rod 71 is connected with the connecting rod 72.
- One end of the swinging rod 71 is also provided for adjusting the length of the swinging rod 71 to accommodate the length of the legs of different riders.
- the trajectory of the movement at a certain point in the middle of the connecting rod 72 is an ellipse
- the trajectory of the knee moving with the knee supporting pad 73 is an ellipse instead of a circular arc reciprocating motion, and the buttocks also have a certain up and down movement, so that a more realistic simulation is performed.
- the crawling action this kind of simulated crawling action is beneficial to the rehabilitation and exercise of the spine and cardiovascular, is a good fitness method; and, in the process of squatting, when the crank 51 passes the highest point, Partial body gravity acting on the knee support pad 73 helps drive the crank 51 to rotate downward, just as in the traditional upright mount riding posture, the rider leaves the saddle to increase the driving force and uses the body gravity to step on the ankle. .
- FIG. 5 and FIG. 6 show a third embodiment of the prone bicycle according to the present invention.
- This embodiment is basically the same as the embodiment 2 except that the knee dynamic support mechanism 7 is provided on the frame 1 .
- a pair of swinging rods 71, a pair of connecting rods 72 and a pair of knee supporting pads 73 on both sides, the upper ends of the swinging rods 71 are hinged to the upper middle portion of the frame 1, and one end of each connecting rod 72 is provided with a U-shaped connecting head 721.
- the U-shaped joint 721 is hinged to the rotating shaft of the footboard 52, and the other end of each of the links 72 is also provided with a U-shaped structure, and is hinged to the lower end of the swinging rod 71 by a U-shaped structure, and the swinging rod located on the same side of the driving sprocket 42 71.
- the connecting rod 72 and the crank 51 constitute a set of crank rocker mechanisms.
- Each knee supporting pad 73 is mounted on the middle of the connecting rod 72 through a seat 74.
- the bearing support points of the knee supporting pad 73 and the support 74 are located. Directly above the link 72, a non-cantilevered connection is formed. As shown in FIG.
- the support 74 cancels the cantilever structure, and the U-shaped bracket 744 is used to connect and fix the cross seat 746 directly above the connecting rod 72.
- This non-cantilever connection makes the connecting rod 72 and the knee portion.
- the force of the support pad 73 is better, and the deflection of the link 72 is not long due to the long connection of the cantilever.
- the holder 74 may also be constituted by a fastening bolt 745, a U-shaped bracket 744 and a spring clip 743, and the elastic member 76 is changed to a structure composed of four bow springs 761, a spring The clip 743 is hung on the straight section of the two longitudinally disposed arcuate springs 761.
- the U-shaped bracket 744 is disposed between the two spring clips 743, and the anti-slip spacer 77 is interposed between the spring clip 743 and the U-shaped bracket 744.
- the fixing bolt 745 passes through the spring clip 743, the anti-slip spacer 77, the U-shaped bracket 744 and the connecting rod 72 and passes through the nut Fixed directly above the connecting rod 72, the loosening nut can adjust the pitch angle of the spring clip 743 and the connected elastic member 76 and the knee support pad 73, and can also make the spring clip 743 before and after the straight line segment of the bow spring 761. The position is fine-tuned so that the rider can find the most comfortable knee support angle and position.
- the tightening nut can be tightened under the aid of the anti-slip spacer 77 to prevent the knee support pad 73 from rotating arbitrarily.
- FIG. 7 and FIG. 8 show a fourth embodiment of a prone bicycle according to the present invention.
- This embodiment is basically the same as Embodiment 1, except that the transmission mechanism 4 includes a driven sprocket 41 and a drive chain.
- the wheel 42 and the chain 43, the driven sprocket 41 is mounted on the rear wheel 3, the driving sprocket 42 is disposed on the rear upper portion of the frame 1, and the chain 43 is wound around the driven sprocket 41 and the driving sprocket 42;
- the stepping mechanism 5 includes a pair of cranks 51 and a pair of footrests 52 which are respectively disposed on both sides of the frame 1, and each of the cranks 51-end is fixedly fixed to the center of the driving sprocket 42 and the other end is hinged to the footboard 52.
- the knee dynamic support mechanism 7 includes a pair of swing rods 71, a pair of links 72 and a pair of knee support pads 73, which are respectively disposed on two sides of the frame 1.
- the lower ends of the swing rods 71 are hinged to the lower middle and the lower part of the frame 1, respectively.
- the connecting rod 72 is hinged to the upper end of the swinging rod 71, and the other end is provided with a U-shaped connecting head 721.
- the U-shaped connecting head 721 is hinged with the rotating shaft of the footboard 52, and the swinging rod 71 and the connecting body on the same side of the driving sprocket 42 are connected.
- the rod 72 and the crank 51 constitute a set of crank rocker mechanisms, and the knee support pads 73 are mounted in the middle of the connecting rod 72 through a seat 74.
- the bearing support points of the knee support pad 73 and the support 74 are located at the connecting rod 72. Just above it.
- the riding feature of this embodiment is: the connection point of the swing lever 71 and the frame 1 is changed to the middle and lower part of the frame 1, and the driving sprocket 42 is transferred to the rear upper part of the frame 1, which is approximately 45 of the rear wheel 3.
- the position of the phase which increases the overall height of the knee dynamic support mechanism 7 and the transmission mechanism 4, so that a smaller wheel can be matched, and the transmission mechanism 4 is prevented from being scratched with the ground while steering, while the rider Reduced center of gravity and improved handling of the bicycle.
- FIG. 9 and FIG. 10 show a fifth embodiment of a prone bicycle according to the present invention.
- This embodiment is basically the same as Embodiment 4 except that the knee dynamic support mechanism 7 is provided on the frame 1 .
- a pair of mutually parallel guide rails 75 on both sides, a pair of link 72 and a pair of knee support pads 73, each of the guide rails 75 is fixed to the frame 1, and one end of each link 72 is slidably disposed on the guide rail 75 by a roller, and the guide rail 75 and the distance between the connecting rod 72 and the frame 1 are equal
- the other end of each connecting rod 72 is provided with a U-shaped connecting head 721, and the U-shaped connecting head 721 is hinged with the rotating shaft of the footboard 52, and is located on the same side of the driving sprocket 42.
- the guide rail 75, the link 72 and the crank 51 constitute a set of crank slider mechanisms, and each knee support pad 73 is mounted on the middle of the link 72 through a seat 74, and the bearing force of the knee support pad 73 and the support 74
- the fulcrum is located directly above the link 72.
- the outer ring of the roller is formed into a concave curved surface, and is matched with the guide rail 75 of the cross section of the circular tube, and the lower limit of the guide rail 75 is also equipped with a limit roller to ensure the smoothness of the transmission. As shown in FIG.
- the outer ring of the roller may be formed into a convex curved curved surface to be matched with the guide rail 75 of the concave cross section; and the double-row roller and the cross section may be substantially C-shaped and The bottom rail with the concave-convex groove body has a matching structure.
- the riding characteristics of the embodiment are substantially the same as those of the embodiment 4, and details are not described herein again.
- Embodiment 6 FIG. 11 and FIG. 12 show a sixth embodiment of a prone bicycle according to the present invention. This embodiment is basically the same as Embodiment 5 except that a pair of mutually parallel guide rails 75 are located on the rear wheel 3.
- the length of the pair of links 72 is shorter, the short end of the connecting rod 72 is adjacent to the end of the guide rail 75, and the lower end of the short rod is provided with a roller sliding on the guide rail 75.
- the knee support pad 73 is mounted at a position where the link 72 is close to the guide rail 75.
- the riding characteristics of this embodiment are as follows: The knee is substantially linear reciprocating motion, and the buttocks are substantially free from up and down movement.
- FIG. 13 and FIG. 14 show a seventh embodiment of a prone bicycle according to the present invention.
- This embodiment is basically the same as Embodiment 1, except that the transmission mechanism 4 includes a driven sprocket 41 and a drive chain.
- the wheel 42 and the chain 43, the driven sprocket 41 is mounted on the rear wheel 3, the driving sprocket 42 is disposed in the middle of the frame 1, and the chain 43 is wound around the driven sprocket 41 and the driving sprocket 42;
- the mechanism 5 includes a pair of cranks 51, a pair of footboards 52 and a pair of pedal links 53 which are respectively disposed on two sides of the frame 1.
- the knee dynamic support mechanism 7 includes a pair of swing rods 71 and a pair of knee support pads 73 which are respectively disposed on two sides of the frame 1.
- the lower ends of the swing rods 71 are hinged to the lower rear portion of the frame 1, that is, located behind the rear wheel 3. At about 45 degrees, the upper end is hinged to the shaft of the footboard 52, and the swing lever 71, the pedal link 53 and the crank 51 on the same side of the drive sprocket 42 constitute a set of crank rocker mechanisms, and the knee support pads 73 pass.
- a seat 74 is mounted in the middle of the pedal link 53.
- the hinge point of the lower end of the swing lever 71 is as close as possible to the ground, which can lower the center of gravity of the entire crank rocker mechanism, thereby reducing the center of gravity of the rider to ensure the smoothness of the ride.
- the riding characteristics of this embodiment are as follows: The rider has up and down movements on the buttocks during the riding, the elliptical trajectory movement of the knees, and the reciprocating motion of the ankles.
- the crank 51 turns the inflection point, the rider can use the body.
- the gravity causes the crank 51 to rotate downward, increasing the driving efficiency.
- FIG. 15 and FIG. 16 show an eighth embodiment of the prone bicycle according to the present invention.
- This embodiment is basically the same as Embodiment 7, except that the knee dynamic support mechanism 7 is provided on the frame 1 .
- a pair of swinging rods 71 and a pair of knee supporting pads 73 on both sides, the upper ends of the swinging rods 71 are hinged to the rear upper part of the frame 1, and the lower end is hinged to the rotating shaft of the footboard 52, and is disposed on the same side of the driving sprocket 42.
- the lever 71, the pedal link 53 and the crank 51 constitute a set of crank rocker mechanisms, and each knee support pad 73 is suspended from the middle of the pedal link 53 by a seat 74.
- the riding characteristics of this embodiment are substantially the same as those of the seventh embodiment.
- the present embodiment can select smaller wheels to lower the center of gravity of the rider.
- FIG. 17 and FIG. 18 show a ninth embodiment of a prone bicycle according to the present invention.
- This embodiment is basically the same as Embodiment 7, except that the knee dynamic support mechanism 7 is provided on the frame 1 .
- a pair of sides on each side The guide rail 75 of the row and the pair of knee support pads 73, each of the guide rails 75 is fixed to the frame 1, the rails 75 of the same side and the pedal link 53 are equal to the distance of the frame 1, and the pedal links 53-end and crank 51 is hinged, and the other end is provided with a U-shaped connector 721 and is hingedly connected with the rotating shaft of the footboard 52 through the U-shaped connecting head 721.
- the U-shaped connecting head 721 is slidably disposed on the guide rail 75, and is located on the same side of the driving sprocket 42. 75.
- the pedal link 53 and the crank 51 constitute a set of crank slider mechanisms, and each knee support pad 73 is mounted on the middle of the pedal link 53 through a seat 74, and the bearing force of the knee support pad 73 and the support 74
- the fulcrum is located directly above the pedal link 53.
- a short rod is vertically connected downward at a position where the U-shaped joint 721 meets a straight portion of the pedal link 53, a roller is installed at a lower end of the short rod, and a reinforcement is provided between the short rod and the pedal link 53. Rod.
- the riding characteristics of this embodiment are as follows:
- the rider has an up and down movement on the buttocks during the riding, an elliptical trajectory movement of the knees, and a linear reciprocating motion of the ankles.
- This embodiment can also employ smaller wheels to lower the center of gravity of the rider.
- 19 and 20 show a tenth embodiment of the present invention, which is basically the same as the first embodiment, except that the transmission mechanism 4 includes the rotating shaft 31 of the rear wheel 3, and the pedaling mechanism 5 includes A pair of cranks 51 and a pair of footrests 52 are disposed at two ends of the rotating shaft 31. Each crank 51-end is fixedly fixed to the center of the driving sprocket 42, and the other end is hinged to the footboard 52.
- the knee dynamic supporting mechanism 7 is divided into a pair of swinging rods 71 on both sides of the rotating shaft 31, a pair of connecting rods 72 and a pair of knee supporting pads 73, the upper ends of the swinging rods 71 are hinged to the upper middle portion of the frame 1, and the connecting rods 72 end and the swinging rod 71 The lower end is hinged, and the other end is hinged to the crank 51.
- the swinging rod 71, the connecting rod 72 and the crank 51 on the same side of the rotating shaft 31 constitute a set of crank rocker mechanisms, and the knee supporting pads 73 are suspended from the pendulum by a seat 74.
- the junction of the rod 71 and the link 72 are provided to the pendulum.
- the riding characteristics of this embodiment are: The sprocket transmission mechanism is eliminated, and the wheelbase of the front wheel 2 and the rear wheel 3 can be reduced.
- the knee dynamic support mechanism 7 can also adopt a structure similar to that employed in the embodiments 2 to 7 as needed.
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Abstract
一种俯卧式自行车,包括车架(1)、前轮(2)、后轮(3)、用于带动后轮(3)的传动机构(4)以及用于驱动传动机构(4)的蹬踩机构(5),所述前轮(2)和后轮(3)分设于车架(1)的前部和后部,所述车架(1)的前部设有前臂支撑机构(6),所述蹬踩机构(5)与车架(1)之间装设有随蹬踩机构(5)同步运动的膝部动态支撑机构(7)。该俯卧式自行车采用动静结合的多点支撑,提高了骑行舒适性和骑行效率并兼具爬行健身功能。
Description
一种俯卧式自行车 技术领域
本发明涉及一种自行车, 尤其涉及一种俯卧式自行车。
背景技术
当今, 自行车正在从代步的交通工具逐步向运动型、 休闲娱乐型以及旅游型方面发 展, 并且, 还有进一步向健身型自行车方面发展的趋势。 然而, 传统的坐骑式自行车远 远满足不了上述这些发展趋势的需要。
传统的坐骑式自行车在空气动力学、 人体解剖学、 人体生物学、 血液动力学和人机 工程学等方面存在许多缺陷: 1、 由于骑车者上身直立坐在鞍座上, 迎风面积大, 空气阻 力成为影响效率和行驶速度的主要因素; 2、 直立坐姿增加了人体脊柱的受压强度; 3、 为了减少空气阻力, 骑车者不得不将上身俯卧、 弯曲地趴在车把上, 这种上身弯曲的姿 势使腹部压力增大, 并且对腰椎造成高度压迫; 4、 从血液动力学的观点来看, 坐骑式对 下肢静脉血液的回流不利; 5、 由于骑车者的体重大部分由臀部承受, 并且与鞍座产生强 烈的摩擦, 使臀部感到不适且容易产生很多副作用。
为了克服传统坐骑式自行车的上述缺点, 有人提出了俯卧式自行车的提案, 如公告 号为 CN1126683C的中国专利文献, 发明名称为 "带有链传动及多齿轮和放在后轮外的踏 板的自行车"; 公告号为 CN2564461Y的中国专利文献, 实用新型名称为 "卧骑式自行 车"; 公告号为 US5887882A的美国专利文献, 发明名称为 "prone bicycle" (俯卧式自行 车); 还有公告号为 US6050584A的美国专利文献, 发明名称为 "bicycle placing rider in substantially semi-prone riding position" (半俯卧式自行车)。 虽然上述几种提案中都将骑车 者身体的姿势从直立式改变为俯卧式或半俯卧式, 但是都没有很好地解决骑车者身体的 支撑问题。
在传统坐骑式姿势中, 自行车的把手支撑了骑车者部分上肢重量, 脚蹬支撑了骑车 者部分下肢的重量, 而鞍座却支撑了骑车者大部分的体重。 根据公告号为 CN1126683C的 中国专利文献的说明, 骑车者的支撑点有: 腿在脚踏板上的支撑, 大腿和臀部在鞍座上 的支撑, 胸部和肩部在腋窝支撑件的支撑, 或者肩垫和围腰胸衣的支撑, 以及胳膊和前 臂在把手上的支撑。 我们不难看出有些支撑点是不合理的, 或者不是有效的。 其一, 与 传统直立坐骑式不同, 在俯卧姿势下, 骑车者的腿基本上是水平的, 腿的重量不可能再 由脚踏板来支撑了, 如果不提供特殊设计的脚蹬, 比如带脚套的脚蹬, 腿在蹬踩过程中
就有可能掉下来而脱离脚蹬; 其二, 利用鞍座来提供支撑, 在俯卧姿势下也是不合理 的, 在传统直立坐骑式下, 利用鞍座来提供支撑是唯一的选择, 也是最有效的支撑, 但 是, 在俯卧姿势下, 骑车者身体基本上是水平的, 鞍座就不能提供有效的支撑了, 尤其 不能有效地支撑臀部, 充其量也只能在两腿间的下裆处提供有限的支撑而已, 从人体解 剖学的观点来看, 无论是男性还是女性, 这个部位都不适合作为支撑部位; 其三, 从人 体解剖学的观点来看, 胸部作为支撑会影响呼吸系统; 其四, 腋窝的支撑限制了骑车者 对车把方向的控制并造成上下车的不便。 在上述公告号为 CN2564461Y和 US5887882A 的专利文献中, 设计者只提供了肩支撑和胸腹支撑, 这两处支撑的缺陷前文已有阐述, 在此不再重复; 同时, 由于上述两个专利文献所公开的技术方案都没有提供鞍座对臀部 和腿部的支撑, 也就是说, 没有对下肢提供任何支撑, 腿在蹬踩过程中就有掉下来而脱 离脚蹬的危险。 在公告号为 US6050584A的专利文献中, 设计者提供的也只是肩支撑和鞍 座支撑, 这两处支撑也是不尽合理的, 其缺陷前文已有阐述, 在此不再重复。 此外, 上 述几种技术方案都没有为骑行者提供体位变换的可能性, 这对于长途骑行是非常不利 的, 并且上述几种技术方案都不具备健身功能。
发明内容
本发明要解决的技术问题是克服现有技术的不足, 提供一种采用动静结合的多点支 撑、 提高了骑行舒适性和骑行效率、 兼具爬行健身功能的俯卧式自行车。
为解决上述技术问题, 本发明采用以下技术方案:
一种俯卧式自行车, 包括车架、 前轮、 后轮、 用于带动后轮的传动机构以及用于驱 动传动机构的蹬踩机构, 所述前轮和后轮分设于车架的前部和后部, 所述车架的前部设 有前臂支撑机构, 所述蹬踩机构与车架之间装设有随蹬踩机构同步运动的膝部动态支撑 机构。
所述传动机构包括从动链轮、 主动链轮和链条, 所述从动链轮装设于后轮上, 所述 主动链轮设于车架的后下部, 所述链条绕设于从动链轮和主动链轮上; 所述蹬踩机构包 括分设于车架两侧的一对曲柄和一对脚踏板, 各曲柄一端与主动链轮中心固接, 另一端 与脚踏板铰接。
所述膝部动态支撑机构包括分设于车架两侧的一对摆杆、 一对连杆和一对膝部支撑 垫, 各摆杆上端铰接于车架的后上部, 各连杆一端与摆杆的下端铰接, 另一端与所述曲 柄铰接, 位于主动链轮同侧的摆杆、 连杆和曲柄构成一组曲柄摇杆机构, 各膝部支撑垫 通过一支座悬挂装设于摆杆与连杆的连接处。
所述膝部动态支撑机构包括分设于车架两侧的一对摆杆、 一对连杆和一对膝部支撑 垫, 各摆杆上端铰接于车架的中上部, 各连杆一端与摆杆的下端铰接, 另一端与所述曲 柄铰接, 位于主动链轮同侧的摆杆、 连杆和曲柄构成一组曲柄摇杆机构, 各膝部支撑垫 通过一支座悬挂装设于连杆的中部。
所述膝部动态支撑机构包括分设于车架两侧的一对摆杆、 一对连杆和一对膝部支撑 垫, 各摆杆上端铰接于车架的中上部, 各连杆一端与摆杆的下端铰接, 另一端设有 U形 连接头, 所述 U形连接头与所述脚踏板的转轴铰接, 位于主动链轮同侧的摆杆、 连杆和 曲柄构成一组曲柄摇杆机构, 各膝部支撑垫通过一支座装设于连杆的中部, 所述膝部支 撑垫和支座的承力支点位于连杆的正上方。
所述传动机构包括从动链轮、 主动链轮和链条, 所述从动链轮装设于后轮上, 所述 主动链轮设于车架的后上部, 所述链条绕设于从动链轮和主动链轮上; 所述蹬踩机构包 括分设于车架两侧的一对曲柄和一对脚踏板, 各曲柄一端与主动链轮中心固接, 另一端 与脚踏板铰接。
所述膝部动态支撑机构包括分设于车架两侧的一对摆杆、 一对连杆和一对膝部支撑 垫, 各摆杆下端铰接于车架的中下部, 各连杆一端与摆杆的上端铰接, 另一端设有 U形 连接头, 所述 U形连接头与所述脚踏板的转轴铰接, 位于主动链轮同侧的摆杆、 连杆和 曲柄构成一组曲柄摇杆机构, 各膝部支撑垫通过一支座装设于连杆的中部, 所述膝部支 撑垫和支座的承力支点位于连杆的正上方。
所述膝部动态支撑机构包括分设于车架两侧的一对导轨、 一对连杆和一对膝部支撑 垫, 各导轨固定于车架上, 各连杆一端滑动设置于导轨上, 另一端设有 U形连接头, 所 述 u形连接头与所述脚踏板的转轴铰接, 位于主动链轮同侧的导轨、 连杆和曲柄构成一 组曲柄滑块机构, 各膝部支撑垫通过一支座装设于连杆的中部, 所述膝部支撑垫和支座 的承力支点位于连杆的正上方。
所述传动机构包括从动链轮、 主动链轮和链条, 所述从动链轮装设于后轮上, 所述 主动链轮设于车架的中部, 所述链条绕设于从动链轮和主动链轮上; 所述蹬踩机构包括 分设于车架两侧的一对曲柄、 一对脚踏板和一对踏板连杆, 各曲柄一端与主动链轮中心 固接, 各踏板连杆一端与曲柄铰接, 另一端与脚踏板铰接。
所述膝部动态支撑机构包括分设于车架两侧的一对摆杆和一对膝部支撑垫, 各摆杆 下端铰接于车架的后下部, 上端与所述脚踏板的转轴铰接, 位于主动链轮同侧的摆杆、 踏板连杆和曲柄构成一组曲柄摇杆机构, 各膝部支撑垫通过一支座悬挂装设于踏板连杆
的中部。
所述膝部动态支撑机构包括分设于车架两侧的一对摆杆和一对膝部支撑垫, 各摆杆 上端铰接于车架的后上部, 下端与所述脚踏板的转轴铰接, 位于主动链轮同侧的摆杆、 踏板连杆和曲柄构成一组曲柄摇杆机构, 各膝部支撑垫通过一支座悬挂装设于踏板连杆 的中部。
所述膝部动态支撑机构包括分设于车架两侧的一对导轨和一对膝部支撑垫, 各导轨 固定于车架上, 各踏板连杆一端与曲柄铰接, 另一端设有 U形连接头并通过该 U形连接 头与脚踏板的转轴铰接, 所述 u形连接头滑动设置于导轨上, 位于主动链轮同侧的导 轨、 踏板连杆和曲柄构成一组曲柄滑块机构, 各膝部支撑垫通过一支座装设于踏板连杆 的中部, 所述膝部支撑垫和支座的承力支点位于踏板连杆的正上方。
所述传动机构包括所述后轮的转轴; 所述蹬踩机构包括分设于转轴两端的一对曲柄 和一对脚踏板, 各曲柄一端与主动链轮中心固接, 另一端与脚踏板铰接。
所述膝部动态支撑机构包括分设于转轴两侧的一对摆杆、 一对连杆和一对膝部支撑 垫, 各摆杆上端铰接于车架的中上部, 各连杆一端与摆杆的下端铰接, 另一端与所述曲 柄铰接, 位于转轴同侧的摆杆、 连杆和曲柄构成一组曲柄摇杆机构, 各膝部支撑垫通过 一支座悬挂装设于摆杆与连杆的连接处。
所述前臂支撑机构包括把手和肘部支撑垫, 所述把手连接于车架的前叉上部, 所述 肘部支撑垫设于把手的后方。
所述前臂支撑机构下方设有上肢支撑把手, 所述上肢支撑把手连接于车架的前叉中 部。
所述脚踏板上设有用于防止脚掌脱离脚踏板的脚套。
所述膝部支撑垫与支座之间设有用于减振缓冲的弹性元件。
与现有技术相比, 本发明的优点在于:
本发明的俯卧式自行车, 在车架的前部设有前臂支撑机构, 蹬踩机构与车架之间装 设有随蹬踩机构同步运动的膝部动态支撑机构, 前臂支撑机构实现对上身的静态支撑, 膝部动态支撑机构作为对下身的主要动态支撑, 而蹬踩机构可作为对下身的辅助动态支 撑, 这种动静结合的多点支撑方案, 将骑车者身体的重量分散到多个支撑点, 减轻了单 个支撑点的负荷, 完美的解决了俯卧姿势下人体重力的支撑问题, 提高了俯卧姿势下骑 行的舒适性, 有利于长途骑行; 减轻了现有骑行姿态下人体重力产生的副作用, 骑行时 通过合理的调整人体重心还可以利用人体重力做功, 从而提高骑行效率; 这种利用前臂
和双膝支撑的俯卧骑行方式与人类爬行时的运动非常相似, 从而可以为骑车者提供类爬 行运动的健身功能。
附图说明
图 1是本发明实施例 1的第一视角立体结构示意图。
图 2是本发明实施例 1的第二视角立体结构示意图。
图 3是本发明实施例 2的第 视角立体结构示意图。
图 4是本发明实施例 2的第二视角立体结构示意图。
图 5是本发明实施例 3的第 视角立体结构示意图。
图 6是本发明实施例 3的第二视角立体结构示意图。
图 7是本发明实施例 4的第 视角立体结构示意图。
图 8是本发明实施例 4的第二视角立体结构示意图。
图 9是本发明实施例 5的第 视角立体结构示意图。
图 10是本发明实施例 5的第 二视角立体结构示意图。
图 11是本发明实施例 6的第 -视角立体结构示意图。
图 12是本发明实施例 6的第 二视角立体结构示意图。
图 13是本发明实施例 7的第 视角立体结构示意图。
图 14是本发明实施例 7的第 二视角立体结构示意图。
图 15是本发明实施例 8的第 视角立体结构示意图。
图 16是本发明实施例 8的第 二视角立体结构示意图。
图 17是本发明实施例 9的第 视角立体结构示意图。
图 18是本发明实施例 9的第:二视角立体结构示意图。
图 19是本发明实施例 10的第一视角立体结构示意图。
图 20是本发明实施例 10的第二视角立体结构示意图。
图 21是实施例 1中前臂支撑机构的结构示意图。
图 22是前后距离可调的前臂支撑机构的结构示意图。
图 23是实施例 1中膝部支撑垫的悬臂式安装结构示意图。
图 24是另一种膝部支撑垫的悬臂式安装结构示意图。
图 25是实施例 3中膝部支撑垫的非悬臂式安装结构示意图。
图 26是另一种膝部支撑垫的非悬臂式安装结构示意图。
图 27是一种导轨的支撑结构示意图。
图 28是另一种导轨的支撑结构示意图。
在图中:
1-车架; 2-前轮; 3-后轮; 4-传动机构; 5-蹬踩机构; 6-前臂支撑机构; 7-膝部动态支 撑机构; 8-上肢支撑把手; 11-前叉; 31-转轴; 41-从动链轮; 42-主动链轮; 43-链条; 51- 曲柄; 52-脚踏板; 53-踏板连杆; 61-把手; 62-肘部支撑垫; 71-摆杆; 72-连杆; 73-膝部 支撑垫; 74-支座; 75-导轨; 76-弹性元件; 77-防滑垫片; 521-脚套; 721-U形连接头; 741-悬臂轴; 742-轴套; 743-弹簧夹; 744-U形支架; 745-紧固螺栓; 746-十字座; 761- 弓形弹簧; 762-螺旋弹簧。
具体实施方式
实施例 1 : 图 1和图 2示出了本发明的第一种俯卧式自行车实施例, 该俯卧式自行车 包括车架 1、 前轮 2、 后轮 3、 用于带动后轮 3的传动机构 4以及用于驱动传动机构 4的 蹬踩机构 5, 前轮 2和后轮 3分设于车架 1的前部和后部, 车架 1的前部设有前臂支撑机 构 6, 蹬踩机构 5与车架 1之间装设有随蹬踩机构 5同步运动的膝部动态支撑机构 7。 我 们通过对现有技术的分析发现, 仅仅依靠静态支撑很难满意地解决俯卧姿势下骑车者身 体的支撑问题, 本发明以人体解剖学、 仿生学和人机工程学为依据, 认真研究了人类以 双肘和双膝着地的俯卧爬行姿势, 借鉴人类爬行时的支撑方式, 提出了静态支撑和动态 支撑相结合的多点支撑方案, 由于骑车者上身基本静止, 故上身采用前臂支撑机构 6实现 静态支撑, 由于骑车者下肢是运动的, 故下身采用随蹬踩机构 5同步运动的膝部动态支撑 机构 7作为主要动态支撑, 而蹬踩机构 5可作为辅助动态支撑, 这种动静结合的多点支撑 方案, 将骑车者身体的重量分散到多个支撑点, 减轻了单个支撑点的负荷, 完美的解决 了俯卧姿势下人体重力的支撑问题, 提高了俯卧姿势下骑行的舒适性, 有利于长途骑 行; 减轻了现有骑行姿态下人体重力产生的副作用, 骑行时通过合理的调整人体重心还 可以利用人体重力做功, 从而提高骑行效率; 这种利用前臂和双膝支撑的俯卧骑行方式 与人类爬行时的运动非常相似, 从而可以为骑车者提供类爬行运动的健身功能。
如图 21所示, 本实施例的前臂支撑机构 6包括一对把手 61和一对肘部支撑垫 62, 一对把手 61连接于车架 1的前叉 11上部, 且呈前窄后宽设置, 把手 61前端朝上翘起, 肘部支撑垫 62设于把手 61 的后端, 肘部支撑垫 62可以分散肘部受力, 提高操作舒适 性; 前臂支撑机构 6下方设有上肢支撑把手 8, 上肢支撑把手 8连接于车架 1的前叉 11 中部, 骑车者在骑行过程中可以选用前臂支撑机构 6对上身支撑, 此时主要依靠肘部受 力, 还可以选用上肢支撑把手 8对上身支撑, 此时主要依靠手掌和腕部受力, 两种支撑方
式可以随时转换, 便于骑车者通过变换体位来缓解疲劳, 以适应长途骑行的需求。 在其 他实施例中, 把手 61和肘部支撑垫 62可以设计成角度可调的结构, 也可设计成如图 22 所示的前后距离可调的结构, 以适应不同身体条件骑车者的需求; 同样, 上肢支撑把手 8 也可设计成高低位置可调的结构。
本实施例中, 传动机构 4包括从动链轮 41、 主动链轮 42和链条 43, 从动链轮 41装 设于后轮 3上, 主动链轮 42设于车架 1的后下部, 链条 43绕设于从动链轮 41和主动链 轮 42上; 蹬踩机构 5包括分设于车架 1两侧的一对曲柄 51和一对脚踏板 52, 一对曲柄 51呈 180度布置, 各曲柄 51—端与主动链轮 42中心固接, 另一端与脚踏板 52铰接, 脚 踏板 52上设有用于防止脚掌脱离脚踏板 52的脚套 521, 该脚套 521由一根脚背带、 一根 脚尖带和一根连接带组成, 脚背带和脚尖带成 90度安装, 二者的两端分别固定在脚蹬轴 的两端, 连接带在其中部, 并将脚背带和脚尖带连接起来, 构成两个 τ型带。 膝部动态 支撑机构 7包括分设于车架 1两侧的一对摆杆 71、 一对连杆 72和一对膝部支撑垫 73, 各 摆杆 71上端铰接于车架 1的后上部, 各连杆 72—端与摆杆 71的下端铰接, 另一端与曲 柄 51铰接, 位于主动链轮 42同侧的摆杆 71、 连杆 72和曲柄 51构成一组曲柄摇杆机 构, 各摆杆 71和各连杆 72上均设有多个用于调节长度的连接孔, 选用不同的连接孔时, 可以调节其长度, 以适应不同骑车者的下肢长度, 各膝部支撑垫 73通过一支座 74悬挂装 设于摆杆 71与连杆 72的连接处, 膝部支撑垫 73与支座 74之间设有用于减振缓冲的弹性 元件 76。 如图 23所示, 本实施例的膝部支撑垫 73根据膝盖的形状进行设计, 可减轻对 膝部的压力和不舒适感, 该支座 74由一悬臂轴 741和一" 字座 746构成, 十字座 746装 设于悬臂轴 741上, 悬臂轴 741的一端连接于连杆 72上, 弹性元件 76为设置在十字座 746 四个端头的螺旋弹簧 762。 如图 24所示, 在其它实施例中, 支座 74也可由悬臂轴 741、 轴套 742和弹簧夹 743构成, 弹性元件 76由四件连接于底座套与膝部支撑垫 73之 间的弓形弹簧 761构成, 弹簧夹 743设在两件纵向布置的弓形弹簧 761的直线段上, 弹簧 夹 743通过轴套 742和螺母固定在悬臂轴 741的一端, 弹簧夹 743与轴套 742之间设有防 滑垫片 77, 悬臂轴 741的另一端连接于连杆 72上, 松开螺母可以对弹簧夹 743及所连弹 性元件 76和膝部支撑垫 73的俯仰角度进行调节, 还可以使弹簧夹 743在弓形弹簧 761的 直线段上进行前后位置微调, 以便骑车者找到最舒适的膝部支撑角度和位置, 拧紧螺母 可以在防滑垫片 77的辅助作用下增强紧固, 防止膝部支撑垫 73任意转动。
骑车者在骑行时双膝跪在膝部支撑垫 73上, 由膝部支撑垫 73提供两个主要的动态支 撑, 双脚踩在脚踏板 52上, 并由带脚套 521的脚踏板 52提供两个辅助动态支撑, 这样既
能可靠地支撑下肢, 又能灵活和有效地踩动脚踏板 52作圆周运动, 在骑行过程中, 骑车 者的大腿随摆杆 71摆动, 膝部随之作圆弧轨迹运动, 臀部无上下运动。
实施例 2: 图 3和图 4示出了本发明的第二种俯卧式自行车实施例, 本实施例与实施 例 1 基本相同, 区别仅在于: 膝部动态支撑机构 7包括分设于车架 1 两侧的一对摆杆 71、 一对连杆 72和一对膝部支撑垫 73, 各摆杆 71上端铰接于车架 1的中上部, 各连杆 72—端与摆杆 71的下端铰接, 另一端与曲柄 51铰接, 位于主动链轮 42同侧的摆杆 71、 连杆 72和曲柄 51构成一组曲柄摇杆机构, 各膝部支撑垫 73通过一支座 74悬挂装设于连 杆 72的中部, 该连杆 72的长度较长, 其中部设有多个调节孔, 以便调节膝部支撑垫 73 的位置来适应不同骑车者小腿的长度, 摆杆 71 与连杆 72连接的一端也开设有多个调节 孔, 方便调节摆杆 71的长度, 以适应不同骑车者大腿的长度。
由于位于连杆 72中部的某一点的运动轨迹为椭圆, 因此, 膝盖随膝部支撑垫 73运动 的轨迹为椭圆而不是圆弧往复运动, 同时臀部也有一定的上下运动, 这样就更加真实的 模拟了爬行动作, 这种模拟爬行的骑行动作有利于脊柱和心血管的康复和锻炼, 是一种 很好的健身方式; 并且, 在蹬踩过程中, 当曲柄 51 过了最高点后, 可以利用作用在膝部 支撑垫 73上的部分身体重力帮助驱动曲柄 51向下转动, 就像在传统直立坐骑式骑行姿态 下, 骑行者为了增加驱动力离开鞍座利用身体重力蹬踩脚蹬一样。
实施例 3 : 图 5和图 6示出了本发明的第三种俯卧式自行车实施例, 本实施例与实施 例 2基本相同, 区别仅在于: 膝部动态支撑机构 7包括分设于车架 1两侧的一对摆杆 71、 一对连杆 72和一对膝部支撑垫 73, 各摆杆 71上端铰接于车架 1的中上部, 各连杆 72一端设有 U形连接头 721, U形连接头 721与脚踏板 52的转轴铰接, 各连杆 72另一端 也设有 U形结构, 并通过 U形结构与摆杆 71的下端铰接, 位于主动链轮 42同侧的摆杆 71、 连杆 72和曲柄 51构成一组曲柄摇杆机构, 各膝部支撑垫 73通过一支座 74装设于连 杆 72的中部, 膝部支撑垫 73和支座 74的承力支点位于连杆 72的正上方, 形成非悬臂连 接。 如图 25所示, 该支座 74取消了悬臂结构, 转而采用 U形支架 744将十字座 746连接 固定于连杆 72正上方的结构, 这种非悬臂连接方式使连杆 72和膝部支撑垫 73的受力情 况更好, 不会由于连杆 72长且悬臂连接而产生偏斜。 如图 26所示, 在其它实施例中, 支 座 74也可由紧固螺栓 745、 U形支架 744和弹簧夹 743构成, 并将弹性元件 76改为由四 件弓形弹簧 761组成的结构, 弹簧夹 743挂设在两件纵向布置的弓形弹簧 761的直线段 上, U形支架 744设于两个弹簧夹 743之间, 弹簧夹 743与 U形支架 744之间垫有防滑垫 片 77, 紧固螺栓 745穿过弹簧夹 743、 防滑垫片 77、 U形支架 744和连杆 72并通过螺母
固定在连杆 72正上方, 松开螺母可以对弹簧夹 743及所连弹性元件 76和膝部支撑垫 73 的俯仰角度进行调节, 还可以使弹簧夹 743在弓形弹簧 761的直线段上进行前后位置微 调, 以便骑车者找到最舒适的膝部支撑角度和位置, 拧紧螺母可以在防滑垫片 77的辅助 作用下增强紧固, 防止膝部支撑垫 73任意转动。
实施例 4: 图 7和图 8示出了本发明的第四种俯卧式自行车实施例, 本实施例与实施 例 1基本相同, 区别仅在于: 传动机构 4包括从动链轮 41、 主动链轮 42和链条 43, 从动 链轮 41装设于后轮 3上, 主动链轮 42设于车架 1的后上部, 链条 43绕设于从动链轮 41 和主动链轮 42上; 蹬踩机构 5包括分设于车架 1两侧的一对曲柄 51和一对脚踏板 52, 各曲柄 51—端与主动链轮 42中心固接, 另一端与脚踏板 52铰接。 膝部动态支撑机构 7 包括分设于车架 1两侧的一对摆杆 71、 一对连杆 72和一对膝部支撑垫 73, 各摆杆 71下 端铰接于车架 1的中下部, 各连杆 72—端与摆杆 71的上端铰接, 另一端设有 U形连接 头 721, U形连接头 721与脚踏板 52的转轴铰接, 位于主动链轮 42同侧的摆杆 71、 连杆 72和曲柄 51构成一组曲柄摇杆机构, 各膝部支撑垫 73通过一支座 74装设于连杆 72的 中部, 膝部支撑垫 73和支座 74的承力支点位于连杆 72的正上方。
本实施例的骑行特点是: 摆杆 71与车架 1的连接点改为车架 1的中下部, 同时将主 动链轮 42转移到车架 1的后上部, 大概处于后轮 3的 45度相位的位置, 这样增大了膝部 动态支撑机构 7和传动机构 4整体高度, 从而可以配选较小的车轮, 并在转向时防止传动 机构 4与地面刮擦, 同时使骑车者的重心降低, 提升对自行车的操控性。
实施例 5 : 图 9和图 10示出了本发明的第五种俯卧式自行车实施例, 本实施例与实 施例 4基本相同, 区别仅在于: 膝部动态支撑机构 7包括分设于车架 1两侧的一对相互平 行的导轨 75、 一对连杆 72和一对膝部支撑垫 73, 各导轨 75固定于车架 1上, 各连杆 72 一端通过滚轮滑动设置于导轨 75上, 导轨 75和连杆 72至车架 1之间的距离相等, 各连 杆 72另一端设有 U形连接头 721, U形连接头 721与脚踏板 52的转轴铰接, 位于主动链 轮 42同侧的导轨 75、 连杆 72和曲柄 51构成一组曲柄滑块机构, 各膝部支撑垫 73通过 一支座 74装设于连杆 72的中部, 膝部支撑垫 73和支座 74的承力支点位于连杆 72的正 上方。 本实施例中, 滚轮外圈做成凹弧形曲面, 与圆管截面的导轨 75相配合, 导轨 75下 部还装有限位滚轮, 以保证传动的平稳性。 如图 27所示, 在其它实施例中, 可以将滚轮 外圈做成外凸的弧形曲面, 使之与凹型截面的导轨 75相配合; 还可以采用双排滚轮与截 面大体成 C形且底部带凹凸形槽体的导轨 75相配合的结构。 本实施例的骑行特点与实施 例 4基本相同, 在此不再赘述。
实施例 6: 图 11和图 12示出了本发明的第六种俯卧式自行车实施例, 本实施例与实 施例 5基本相同, 区别仅在于: 一对相互平行的导轨 75位于后轮 3两侧, 且导轨 75相对 于地面平行设置, 一对连杆 72的长度更短, 连杆 72靠近导轨 75 的一端向下延伸一短 杆, 短杆下端装有滑设于导轨 75上的滚轮, 膝部支撑垫 73安装于连杆 72靠近导轨 75的 位置。
由于本实施例膝部支撑垫 73安装在连杆 72的端部, 而且导轨 75与地面平行, 因 此, 本实施例的骑行特点是: 膝部基本是直线往复运动, 臀部基本没有上下运动。
实施例 7: 图 13和图 14示出了本发明的第七种俯卧式自行车实施例, 本实施例与实 施例 1基本相同, 区别仅在于: 传动机构 4包括从动链轮 41、 主动链轮 42和链条 43, 从 动链轮 41装设于后轮 3上, 主动链轮 42设于车架 1的中部, 链条 43绕设于从动链轮 41 和主动链轮 42上; 蹬踩机构 5包括分设于车架 1两侧的一对曲柄 51、 一对脚踏板 52和 一对踏板连杆 53, 各曲柄 51—端与主动链轮 42中心固接, 各踏板连杆 53—端与曲柄 51 铰接, 另一端与脚踏板 52铰接。 膝部动态支撑机构 7包括分设于车架 1两侧的一对摆杆 71和一对膝部支撑垫 73, 各摆杆 71下端铰接于车架 1的后下部, 即位于后轮 3后下方 45度左右的位置, 上端与脚踏板 52的转轴铰接, 位于主动链轮 42同侧的摆杆 71、 踏板 连杆 53和曲柄 51构成一组曲柄摇杆机构, 各膝部支撑垫 73通过一支座 74悬挂装设于踏 板连杆 53的中部。 安装时, 摆杆 71下端铰接点尽可能接近地面, 这样可以使整个曲柄摇 杆机构的重心降低, 从而使骑车者的重心降低, 以保证行车的平稳性。
本实施例的骑行特点是: 骑车者在骑行时臀部有上下运动, 膝部作椭圆轨迹运动, 脚蹬作圆弧往复运动, 当曲柄 51转过拐点后, 骑车者可以利用身体的重力使曲柄 51向下 转动, 增加了驱动效率。
实施例 8: 图 15和图 16示出了本发明的第八种俯卧式自行车实施例, 本实施例与实 施例 7基本相同, 区别仅在于: 膝部动态支撑机构 7包括分设于车架 1两侧的一对摆杆 71和一对膝部支撑垫 73, 各摆杆 71上端铰接于车架 1的后上部, 下端与脚踏板 52的转 轴铰接, 位于主动链轮 42同侧的摆杆 71、 踏板连杆 53和曲柄 51构成一组曲柄摇杆机 构, 各膝部支撑垫 73通过一支座 74悬挂装设于踏板连杆 53的中部。
本实施例的骑行特点与实施例 7基本相同, 相比之下本实施例可以选用更小的车轮, 使骑车者的重心更低一些。
实施例 9: 图 17和图 18示出了本发明的第九种俯卧式自行车实施例, 本实施例与实 施例 7基本相同, 区别仅在于: 膝部动态支撑机构 7包括分设于车架 1两侧的一对相互平
行的导轨 75和一对膝部支撑垫 73, 各导轨 75固定于车架 1上, 同侧的导轨 75和踏板连 杆 53与车架 1的间距相等, 各踏板连杆 53—端与曲柄 51铰接, 另一端设有 U形连接头 721并通过该 U形连接头 721与脚踏板 52的转轴铰接, U形连接头 721滑动设置于导轨 75上, 位于主动链轮 42同侧的导轨 75、 踏板连杆 53和曲柄 51构成一组曲柄滑块机构, 各膝部支撑垫 73通过一支座 74装设于踏板连杆 53的中部, 膝部支撑垫 73和支座 74的 承力支点位于踏板连杆 53的正上方。 本实施例在 U形连接头 721与踏板连杆 53直杆部 分相接处垂直向下连接一短杆, 在短杆下端装设滚轮, 同时在短杆与踏板连杆 53之间设 有加强杆。
本实施例的骑行特点是: 骑车者在骑行时臀部有上下运动, 膝部作椭圆轨迹运动, 脚蹬作直线往复运动。 本实施例也可以采用较小的车轮, 使骑车者的重心降低。
实施例 10:
图 19和图 20示出了本发明的第十种俯卧式自行车实施例, 本实施例与实施例 1基本 相同, 区别仅在于: 传动机构 4包括后轮 3的转轴 31, 蹬踩机构 5包括分设于转轴 31两 端的一对曲柄 51和一对脚踏板 52, 各曲柄 51—端与主动链轮 42中心固接, 另一端与脚 踏板 52铰接, 膝部动态支撑机构 7包括分设于转轴 31两侧的一对摆杆 71、 一对连杆 72 和一对膝部支撑垫 73, 各摆杆 71上端铰接于车架 1的中上部, 各连杆 72—端与摆杆 71 的下端铰接, 另一端与曲柄 51铰接, 位于转轴 31同侧的摆杆 71、 连杆 72和曲柄 51构 成一组曲柄摇杆机构, 各膝部支撑垫 73通过一支座 74悬挂装设于摆杆 71与连杆 72的连 接处。
本实施例的骑行特点是: 取消了链轮传动机构, 可以减小前轮 2与后轮 3的轴距。 在 其它实施例中, 膝部动态支撑机构 7也可根据需要采用类似于实施例 2至 7中所采用的结 构。
虽然本发明已以较佳实施例揭露如上, 然而并非用以限定本发明。 任何熟悉本领域 的技术人员, 在不脱离本发明技术方案范围的情况下, 都可利用上述揭示的技术内容对 本发明技术方案做出许多可能的变动和修饰, 或修改为等同变化的等效实施例。 因此, 凡是未脱离本发明技术方案的内容, 依据本发明技术实质对以上实施例所做的任何简单 修改、 等同变化及修饰, 均应落在本发明技术方案保护的范围内。
Claims
1.一种俯卧式自行车, 包括车架 (1)、 前轮 (2)、 后轮 (3)、 用于带动后轮 (3) 的 传动机构 (4) 以及用于驱动传动机构 (4) 的蹬踩机构 (5), 所述前轮 (2) 和后轮
(3) 分设于车架 (1) 的前部和后部, 其特征在于: 所述车架 (1) 的前部设有前臂支撑 机构 (6), 所述蹬踩机构 (5) 与车架 (1) 之间装设有随蹬踩机构 (5) 同步运动的膝部 动态支撑机构 (7)。
2.根据权利要求 1所述的俯卧式自行车, 其特征在于: 所述传动机构 (4) 包括从动 链轮 (41)、 主动链轮 (42) 和链条 (43), 所述从动链轮 (41) 装设于后轮 (3) 上, 所 述主动链轮 (42) 设于车架 (1) 的后下部, 所述链条 (43) 绕设于从动链轮 (41) 和主 动链轮 (42) 上; 所述蹬踩机构 (5) 包括分设于车架 (1) 两侧的一对曲柄 (51) 和一 对脚踏板 (52), 各曲柄 (51) —端与主动链轮 (42) 中心固接, 另一端与脚踏板 (52) 铰接。
3.根据权利要求 2所述的俯卧式自行车, 其特征在于: 所述膝部动态支撑机构 (7) 包括分设于车架 (1) 两侧的一对摆杆 (71)、 一对连杆 (72) 和一对膝部支撑垫 (73), 各摆杆 (71) 上端铰接于车架 (1) 的后上部, 各连杆 (72) —端与摆杆 (71) 的下端铰 接, 另一端与所述曲柄 (51) 铰接, 位于主动链轮 (42) 同侧的摆杆 (71)、 连杆 (72) 和曲柄 (51) 构成一组曲柄摇杆机构, 各膝部支撑垫 (73) 通过一支座 (74) 悬挂装设 于摆杆 (71) 与连杆 (72) 的连接处。
4.根据权利要求 2所述的俯卧式自行车, 其特征在于: 所述膝部动态支撑机构 (7) 包括分设于车架 (1) 两侧的一对摆杆 (71)、 一对连杆 (72) 和一对膝部支撑垫 (73), 各摆杆 (71) 上端铰接于车架 (1) 的中上部, 各连杆 (72) —端与摆杆 (71) 的下端铰 接, 另一端与所述曲柄 (51) 铰接, 位于主动链轮 (42) 同侧的摆杆 (71)、 连杆 (72) 和曲柄 (51) 构成一组曲柄摇杆机构, 各膝部支撑垫 (73) 通过一支座 (74) 悬挂装设 于连杆 (72) 的中部。
5.根据权利要求 2所述的俯卧式自行车, 其特征在于: 所述膝部动态支撑机构 (7) 包括分设于车架 (1) 两侧的一对摆杆 (71)、 一对连杆 (72) 和一对膝部支撑垫 (73), 各摆杆 (71) 上端铰接于车架 (1) 的中上部, 各连杆 (72) —端与摆杆 (71) 的下端铰 接, 另一端设有 U形连接头 (721), 所述 U形连接头 (721) 与所述脚踏板 (52) 的转轴 铰接, 位于主动链轮 (42) 同侧的摆杆 (71)、 连杆 (72) 和曲柄 (51) 构成一组曲柄摇 杆机构, 各膝部支撑垫 (73) 通过一支座 (74) 装设于连杆 (72) 的中部, 所述膝部支 撑垫 (73) 和支座 (74) 的承力支点位于连杆 (72) 的正上方。
6.根据权利要求 1所述的俯卧式自行车, 其特征在于: 所述传动机构 (4) 包括从动
链轮 (41)、 主动链轮 (42) 和链条 (43), 所述从动链轮 (41) 装设于后轮 (3) 上, 所 述主动链轮 (42) 设于车架 (1) 的后上部, 所述链条 (43) 绕设于从动链轮 (41) 和主 动链轮 (42) 上; 所述蹬踩机构 (5) 包括分设于车架 (1) 两侧的一对曲柄 (51) 和一 对脚踏板 (52), 各曲柄 (51) —端与主动链轮 (42) 中心固接, 另一端与脚踏板 (52) 铰接。
7.根据权利要求 6所述的俯卧式自行车, 其特征在于: 所述膝部动态支撑机构 (7) 包括分设于车架 (1) 两侧的一对摆杆 (71)、 一对连杆 (72) 和一对膝部支撑垫 (73), 各摆杆 (71) 下端铰接于车架 (1) 的中下部, 各连杆 (72) —端与摆杆 (71) 的上端铰 接, 另一端设有 U形连接头 (721), 所述 U形连接头 (721) 与所述脚踏板 (52) 的转轴 铰接, 位于主动链轮 (42) 同侧的摆杆 (71)、 连杆 (72) 和曲柄 (51) 构成一组曲柄摇 杆机构, 各膝部支撑垫 (73) 通过一支座 (74) 装设于连杆 (72) 的中部, 所述膝部支 撑垫 (73) 和支座 (74) 的承力支点位于连杆 (72) 的正上方。
8.根据权利要求 6所述的俯卧式自行车, 其特征在于: 所述膝部动态支撑机构 (7) 包括分设于车架 (1) 两侧的一对导轨 (75)、 一对连杆 (72) 和一对膝部支撑垫 (73), 各导轨 (75) 固定于车架 (1) 上, 各连杆 (72) —端滑动设置于导轨 (75) 上, 另一端 设有 U形连接头 (721), 所述 U形连接头 (721) 与所述脚踏板 (52) 的转轴铰接, 位于 主动链轮 (42) 同侧的导轨 (75)、 连杆 (72) 和曲柄 (51) 构成一组曲柄滑块机构, 各 膝部支撑垫 (73) 通过一支座 (74) 装设于连杆 (72) 的中部, 所述膝部支撑垫 (73) 和支座 (74) 的承力支点位于连杆 (72) 的正上方。
9.根据权利要求 1所述的俯卧式自行车, 其特征在于: 所述传动机构 (4) 包括从动 链轮 (41)、 主动链轮 (42) 和链条 (43), 所述从动链轮 (41) 装设于后轮 (3) 上, 所 述主动链轮 (42) 设于车架 (1) 的中部, 所述链条 (43) 绕设于从动链轮 (41) 和主动 链轮 (42) 上; 所述蹬踩机构 (5) 包括分设于车架 (1) 两侧的一对曲柄 (51)、 一对脚 踏板 (52) 和一对踏板连杆 (53), 各曲柄 (51) —端与主动链轮 (42) 中心固接, 各踏 板连杆 (53) —端与曲柄 (51) 铰接, 另一端与脚踏板 (52) 铰接。
10.根据权利要求 9所述的俯卧式自行车, 其特征在于: 所述膝部动态支撑机构 (7) 包括分设于车架 (1) 两侧的一对摆杆 (71) 和一对膝部支撑垫 (73), 各摆杆 (71) 下 端铰接于车架 (1) 的后下部, 上端与所述脚踏板 (52) 的转轴铰接, 位于主动链轮
(42) 同侧的摆杆 (71)、 踏板连杆 (53) 和曲柄 (51) 构成一组曲柄摇杆机构, 各膝部 支撑垫 (73) 通过一支座 (74) 悬挂装设于踏板连杆 (53) 的中部。
11.根据权利要求 9所述的俯卧式自行车, 其特征在于: 所述膝部动态支撑机构 (7) 包括分设于车架 (1) 两侧的一对摆杆 (71) 和一对膝部支撑垫 (73), 各摆杆 (71) 上
端铰接于车架 (1) 的后上部, 下端与所述脚踏板 (52) 的转轴铰接, 位于主动链轮 (42) 同侧的摆杆 (71)、 踏板连杆 (53) 和曲柄 (51) 构成一组曲柄摇杆机构, 各膝部 支撑垫 (73) 通过一支座 (74) 悬挂装设于踏板连杆 (53) 的中部。
12.根据权利要求 9所述的俯卧式自行车, 其特征在于: 所述膝部动态支撑机构 (7) 包括分设于车架 (1) 两侧的一对导轨 (75) 和一对膝部支撑垫 (73), 各导轨 (75) 固 定于车架 (1) 上, 各踏板连杆 (53) —端与曲柄 (51) 铰接, 另一端设有 U形连接头 (721) 并通过该 U形连接头 (721) 与脚踏板 (52) 的转轴铰接, 所述 U形连接头 (721) 滑动设置于导轨 (75) 上, 位于主动链轮 (42) 同侧的导轨 (75)、 踏板连杆 (53) 和曲柄 (51) 构成一组曲柄滑块机构, 各膝部支撑垫 (73) 通过一支座 (74) 装 设于踏板连杆 (53) 的中部, 所述膝部支撑垫 (73) 和支座 (74) 的承力支点位于踏板 连杆 (53) 的正上方。
13.根据权利要求 1所述的俯卧式自行车, 其特征在于: 所述传动机构 (4) 包括所述 后轮 (3) 的转轴 (31); 所述蹬踩机构 (5) 包括分设于转轴 (31) 两端的一对曲柄
(51) 和一对脚踏板 (52), 各曲柄 (51) —端与主动链轮 (42) 中心固接, 另一端与脚 踏板 (52) 铰接。
14.根据权利要求 13所述的俯卧式自行车, 其特征在于: 所述膝部动态支撑机构 (7) 包括分设于转轴 (31) 两侧的一对摆杆 (71)、 一对连杆 (72) 和一对膝部支撑垫 (73), 各摆杆 (71) 上端铰接于车架 (1) 的中上部, 各连杆 (72) —端与摆杆 (71) 的下端铰接, 另一端与所述曲柄 (51) 铰接, 位于转轴 (31) 同侧的摆杆 (71)、 连杆 (72) 和曲柄 (51) 构成一组曲柄摇杆机构, 各膝部支撑垫 (73) 通过一支座 (74) 悬 挂装设于摆杆 (71) 与连杆 (72) 的连接处。
15.根据权利要求 1至 14中任一项所述的俯卧式自行车, 其特征在于: 所述前臂支撑 机构 (6) 包括把手 (61) 和肘部支撑垫 (62), 所述把手 (61) 连接于车架 (1) 的前叉
(11) 上部, 所述肘部支撑垫 (62) 设于把手 (61) 的后方。
16.根据权利要求 1至 14中任一项所述的俯卧式自行车, 其特征在于: 所述前臂支撑 机构 (6) 下方设有上肢支撑把手 (8), 所述上肢支撑把手 (8) 连接于车架 (1) 的前叉 (11) 中部。
17.根据权利要求 2至 14中任一项所述的俯卧式自行车, 其特征在于: 所述脚踏板
(52) 上设有用于防止脚掌脱离脚踏板 (52) 的脚套 (521)。
18.根据权利要求 3或 4或 5或 7或 8或 10或 11或 12或 14所述的俯卧式自行车, 其特征在于: 所述膝部支撑垫 (73) 与支座 (74) 之间设有用于减振缓冲的弹性元件 (76)。
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CN109223340A (zh) * | 2018-03-20 | 2019-01-18 | 赵巍然 | 一种上下肢医疗康复用轮椅 |
CN110218985B (zh) * | 2019-07-19 | 2021-08-03 | 贵州商学院 | 一种曲柄摇杆式磁控溅射设备阴极挡板 |
BR132019025662E2 (pt) * | 2019-12-04 | 2021-06-15 | Da Silva Morgado Pascoal | dispositivo aplicado em quadro de bicicleta reclinável |
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Also Published As
Publication number | Publication date |
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CN103707981B (zh) | 2016-04-13 |
US20160244123A1 (en) | 2016-08-25 |
US9815519B2 (en) | 2017-11-14 |
CN103707981A (zh) | 2014-04-09 |
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