bicycle

Abstract

The present invention allows a user to ride a bicycle in a prone position, thereby lowering the center of gravity and improving riding stability, reducing air resistance during riding to increase speed, and easily transmitting the user's power to the pedals to increase the generation of propulsion.The present invention is characterized by including a frame on which a user can ride in a prone position, equipped with front and rear wheels, and a speed-increasing means attached to the rear wheel that generates power and increases speed by pedaling.

Description

[Technical Field]

[0001] The present invention relates to a bicycle, and more particularly to an improved bicycle that allows a user to ride in a completely prone position, thereby reducing air resistance during riding, lowering the center of gravity to ensure stability, and increasing speed through a speed-increasing means. [Background technology]

[0002] Generally, a bicycle has tires attached to the front and rear of a frame made of metal or non-ferrous metal, a handlebar for steering attached to the front, a saddle (seat) for sitting in the center, and a power generating means for generating the power required for traveling installed between the bottom of the saddle and the rear axle.

[0003] The technical details of the above-mentioned general bicycle configuration will be explained below through patent documents.

[0004] Patent Document 1 discloses a crankshaft 120 rotatably connected to a frame 110, a front sprocket 130 connected to one side of the crankshaft 120 and rotating together when the crankshaft 120 rotates, a first crank arm 131 located outside the front sprocket 130 and connected to one side of the crankshaft 120 and rotating together when the crankshaft 120 rotates, and a crank arm 131 fixedly connected to the frame 110 via an arm member 1411, and and a first fixed sprocket 141 located between the crank arm 131 and the first fixed sprocket 141, which has a first hole 1412 formed in its center and through which the crank shaft 120 passes and is fixed so as not to rotate even when the crank shaft 120 rotates; a first rotating sprocket 142 rotatably coupled to an end of the first crank arm 131 and having a protrusion formed at a 1:1 ratio with the first fixed sprocket 141; and a first auxiliary sprocket 142 rotatably coupled to an end of the first crank arm 131 and fixed to the first rotating sprocket 142 so as to rotate together with the first rotating sprocket 142. a crank arm 151; a first power transmission member 161 that connects the first fixed sprocket 141 and the first rotating sprocket 142 to transmit power; a second crank arm 132 that is connected to the other end of the crankshaft 120 and rotates together with the crankshaft 120 when the crankshaft 120 rotates; and a second crank arm 132 that is fixedly connected to the frame 110 and has a second hole 1432 formed in its center. The crankshaft 120 passes through the second hole 1432, and is fixed to the frame 110 and rotates even when the crankshaft 120 rotates. a second fixed sprocket 143 that is not provided with a crank arm 132, a second rotating sprocket 144 that is rotatably coupled to an end of the second crank arm 132 and has protrusions formed thereon in a 1:1 ratio to the second fixed sprocket 143, a second auxiliary crank arm 152 that is rotatably coupled to an end of the second crank arm 132 and is fixed to the second rotating sprocket 144 to rotate together with the second crank arm 132, and a second power transmission member 162 that connects the second fixed sprocket 143 and the second rotating sprocket 144 to transmit power.

[0005] Patent Document 2 discloses a bicycle frame including a front frame and a rear frame connected to the front frame, the front frame including a vertically arranged head tube, a seat tube, and a horizontally arranged center tube connecting the head tube and the seat tube, the rear frame including seat stays connected to the upper end of the seat tube and the rear wheel, and chain stays connected to the lower end of the seat tube and the rear wheel, the seat tube including an upper seat tube, a middle seat tube, and a lower seat tube, the head tube, the center tube, and the middle seat tube being made of fiber reinforced plastic, and the upper seat tube, the lower seat tube, and the rear frame being made of metal, the center tube being gradually wider from the midpoint of the center tube toward the head tube and the seat tube, an outer shell having a parabolic cross section, and a rib formed vertically on the upper inside of the outer shell with a plurality of holes. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Korean Patent No. 10-1912557-0000 [Patent Document 2] Korean Patent No. 10-1999438-0000 Summary of the Invention [Problem to be solved by the invention]

[0007] The prior art patent document 1 relates to a bicycle drive unit that increases torque by moving the pedal rotation trajectory forward so that the pedal moves farther away from the crankshaft when the pedal is in the forward position, thereby transmitting a strong force to the crankshaft using the lever principle. Patent document 2 relates to a bicycle drive unit that has lightweight and excellent mechanical strength by reinforcing a portion of the frame with fiber-reinforced plastic.

[0008] In a bicycle frame to which conventional technology is applied, the user's buttocks are pressed against a saddle located in the center, keeping the upper body leaning forward, and the rider holds the handlebars with both hands to steer the bicycle, generating power (thrust) by pedaling with both feet to move the bicycle.

[0009] Because of this sitting position, the center of gravity is higher, making the vehicle unstable during travel and resulting in poor maneuverability. It is also prone to tipping over due to uneven surfaces, increasing the risk of accidents resulting in bodily injury to the user.

[0010] Furthermore, there is a limit to how far the upper body can bend forward while riding, which causes increased resistance due to the influence of wind. This obviously has a negative effect on improving records, especially when used on racing bicycles.

[0011] Furthermore, since the power required for a bicycle to move is generated by the combination of the chain gear and the chain, there is a limit to how much speed can be increased through gear changes, which limits the ability to enjoy high-speed racing or speed sports.

[0012] In particular, if power is transmitted by connecting a main chain gear fixed to the pedal shaft installed in the center of the frame with a drive chain gear attached to the rear wheel shaft via a chain, the user's power is not fully transmitted, resulting in power loss, which can cause the user's body to become rapidly fatigued.

[0013] Furthermore, during use, the chain may be subjected to considerable stress and break, which may lead to accidents and require a lot of time and money for repairs and maintenance. [Means for solving the problem]

[0014] Therefore, the present invention has been invented to solve the above problems, and is a bicycle with a front wheel 101 and a rear wheel 102 attached, and a user In a prone positionThe bicycle includes a rideable frame 110 and a speed increasing means 130 attached to the rear wheel 102 to generate power and increase speed by pedaling, The speed increasing means 130 includes a main bracket 131 attached to the ends of the rear tube 116 and the bottom tube 117, a pedal shaft 133 having a bearing 132 interposed between the main bracket 131 and the hub 142 to transmit power in the forward direction to increase the speed of the hub 142 and to rotate freely in the reverse direction, pedals 134 coupled to both sides of the pedal shaft 133, a driving gear 135 provided on one side of the pedal shaft 133 to generate power by the rotation of the pedal shaft 133, a switching shaft 138 provided via a bearing on an auxiliary bracket 137 held by a supporter 136 between the main brackets 131, and a front the driving gear 135 is larger than the intermediate gear 139, and the speed-increasing gear 140 is larger than the driving gear 135 and the intermediate gear 139, and the driving gear 141 is larger than the driving gear 135 and the speed-increasing gear 140, and the driving gear 141 is smaller than the intermediate gear 139 and the speed-increasing gear 140, and the driving gear 141 is smaller than the intermediate gear 139 and the driving gear 135, and the speed-increasing gear 140 is larger than the driving gear 135 and the intermediate gear 139, and the driving gear 141 is smaller than the intermediate gear 139 and the driving gear 135. The purpose of this bicycle is to achieve the following: by having a user ride the bicycle in a prone position, the center of gravity is lowered to improve riding stability, air resistance is reduced during riding to increase speed, and the user's power is easily transmitted to the pedals to increase the generation of propulsive force. [Effects of the Invention]

[0015] The present invention provides the effect of constructing a frame that allows a user to ride in a prone position, lowering the center of gravity to increase stability, and reducing resistance during the riding process to improve riding performance.

[0016] In addition, the present invention has various advantages, such as minimizing power loss by increasing speed through a speed increasing means directly connected to the pedals at the center of the rear wheel axle, and providing a more advanced bicycle by allowing the bicycle to be operated with a cap attached to the frame. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is an exemplary structural diagram showing a bicycle to which the technology of the present invention is applied; [Figure 2] 1 is an overall perspective view showing an extracted bicycle frame to which the technology of the present invention is applied. [Figure 3] 1 is an illustrative view showing a state in which a user is riding on a bicycle frame to which the technology of the present invention is applied; [Figure 4] 1 is a diagram showing the overall configuration of a bicycle speed increasing means to which the technology of the present invention is applied; [Figure 5] 1 is a cross-sectional perspective view showing an extract of a bicycle speed increasing means to which the technology of the present invention is applied. [Figure 6] 1 is a cross-sectional view showing an extract of a speed increasing means of a bicycle to which the technology of the present invention is applied. [Figure 7]1 is an illustrative view showing a state in which a cap is attached to a bicycle to which the technology of the present invention is applied; [Figure 8] 10 is another exemplary view showing a state in which the cap is attached to a bicycle to which the technology of the present invention is applied. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0018] The bicycle 100 to which the technology of the present invention is applied comprises a frame 110 on which a user can ride, which is equipped with a front wheel 101 and a rear wheel 102, and a speed increasing means 130 attached to the rear wheel, which generates power and increases speed by pedaling.

[0019] The frame 110 has a top tube 113 connected to the upper side and rear of a head tube 112, which has a stanchion tube 111 rotatably mounted at its lower end to which the front wheel 101 is attached, and a down tube 114 connected to the lower end of the top tube 113 so as to be inclined backward.

[0020] A center tube 115 is connected vertically to the rear ends of the top tube 113 and the down tube 114, a rear tube 116 is connected to the upper end of the center tube 115 so as to be inclined downward toward the rear, and a bottom tube 117 is connected to the lower end of the center tube 115 so as to extend horizontally toward the rear, and the rear ends of the rear tube 116 and the bottom tube 117 are joined together to mount the rear wheel 102.

[0021] The frame 110 is preferably made of a material such as reinforced aluminum or carbon for light weight, and a flat portion 120 having a width of 14 to 40 cm is formed on the top surface of the top tube 113 so that the user's upper body, i.e., the chest and abdominal regions, can be connected and stably supported.

[0022] A shoulder hook 121 is integrally formed at the front end of the top tube 113 so as to accommodate and support both shoulders of a user lying face down, and a seat part 122 is integrally formed at the rear end of the top tube 113, protruding upward while inclining backward to support the user's buttocks.

[0023] The surfaces of the flat portion 120, the shoulder hook 121 and the seat portion 122 are provided with buffer pads to enhance the feeling of close contact and to absorb shock and vibration.

[0024] Handlebars 125 are attached to both sides of the upper end of the stanchion tube 111 so as not to interfere with the head tube 112, allowing for steering. The handlebars 125 may have various shapes and patterns, and therefore are not limited to any one shape or pattern.

[0025] The speed increasing means 130 is a main bracket 131 attached to the ends of the rear tube 116 and the bottom tube 117. Nibe The pedal shaft 133 is held so that power is transmitted in the forward direction through a bearing 132 and can rotate freely in the reverse direction, and pedals 134 are connected to both sides of the pedal shaft 133.

[0026] A driving gear 135 is mounted on one side of the pedal shaft 133 to generate power by the rotation of the pedal shaft 133. Arrived The auxiliary bracket 137 is held by a supporter 136 between the main brackets 131, and the auxiliary bracket 137 is fitted with a bearing to engage with a medium gear 139 provided on one side of a switching shaft 138. A speed-up gear 140 is attached to the side of the medium gear 139.

[0027] The speed-increasing gear 140 is configured to mesh with a driving gear 141 attached to the pedal shaft 133 via a bearing at the side of the driving gear 135 to output accelerated power, and a hub 142 of the rear wheel 102 is fixed to the driving gear 141 to drive the rear wheel 102.

[0028] The driving gear 135 is larger than the intermediate gear 139, and the speed-increasing gear 140 is larger than the driving gear 135 and the intermediate gear 139, so that the smallest driving gear 141 can rotate quickly. The gear ratios of these gears are calculated taking into account the target speed, and a brake disc for braking can be attached to the outer surface of the hub 142.

[0029] (Embodiment) When riding the bicycle 100, the user lies face down with the abdomen and chest pressed against the flat portion 120 formed on the top surface of the top tube 113, the shoulders pressed against the shoulder hooks 121 formed at the front of the top tube 113, and the buttocks pressed against the seat portion 122 formed at the rear of the top tube 113.

[0030] Both hands can grip the handles 125 formed on both sides of the upper end of the stanchion tube 111 to adjust the direction, and when riding in this state, you can pedal by kicking off the ground with both feet to move forward, or you can place one foot on the ground and pedal with the other foot while riding and pedaling with both feet at the same time.

[0031] When riding begins, the driving gear 135 rotates due to pedaling, and the power of the driving gear is transmitted through the intermediate gear 139 attached to the switching shaft 138 and the speed-increasing gear 140, and finally, regardless of the rotation of the pedal shaft 133, the speed is increased and output faster than the pedaling speed of the user through the driving gear 141 attached to the pedal shaft 133.

[0032] A hub 142 is attached to the drive gear 141, so that the rear wheel 102 can rotate and travel in the end. If necessary, a cap 150 can be attached to the outside of the frame 110 so that the bicycle can be used for speed races while still being able to travel in rain or snow.

[0033] In particular, the present invention has the advantage that the user can maintain a comfortable posture by lying face down, and that when pedaling using the lower body, power can be completely transmitted without loss, thereby maximizing the efficiency of power transmission and power generation. [Industrial Applicability]

[0034] As described above, the present invention has various advantages, such as the user being able to ride the bicycle 100 in a prone position, thereby lowering the center of gravity and improving riding stability, reducing air resistance during riding and increasing speed, and easily transferring the user's power to the pedals 134, thereby increasing the generation of propulsion force.

Claims

1. a frame (110) equipped with a front wheel (101) and a rear wheel (102) and on which a user can lie down; a speed increasing means (130) attached to the rear wheel (102) for generating power and increasing speed by pedaling; The speed increasing means (130) a main bracket (131) attached to the ends of the rear tube (116) and the bottom tube (117); a pedal shaft (133) having a bearing (132) interposed between the pedal shaft and the main bracket (131) to transmit power in the forward direction to increase the speed of the hub (142) and to allow free rotation in the reverse direction; Pedals (134) coupled to both sides of the pedal shaft (133); a driving gear (135) provided on one side of the pedal shaft (133) for generating power by the rotation of the pedal shaft (133); a switching shaft (138) provided via a bearing on an auxiliary bracket (137) held by a supporter (136) between the main brackets (131); a medium gear (139) provided on one side of the switching shaft (138) and meshing with the driving gear (135); an accelerating gear (140) attached to the side of the intermediate gear (139); a driving gear (141) attached to the pedal shaft (133) via a bearing at the side of the driving gear (135) and meshing with the speed-up gear (140) to output speed-up power; a hub (142) fixed to the driving gear (141) so as to be able to drive the rear wheel (102); Including, The driving gear (135) is larger than the intermediate gear (139), and the speed-increasing gear (140) is larger than the driving gear (135) and the intermediate gear (139), and rotates the smallest driving gear (141).

2. The frame (110) a stanchion tube (111) to which the front wheel (101) is attached at its lower end; A head tube (112) to which the stanchion tube (111) is rotatably attached. and, a top tube (113) connected to the upper side of the rear of the head tube (112); 、 A downchair is connected to the lower end of the top tube (113) so as to be inclined rearward. Tube (114) and The rear end of the top tube (113) and the down tube (114) are connected vertically. A center tube (115); The rear end of the center tube (115) is connected to the rear end in a downwardly inclined manner. a tube (116); A bottom tube (115) is connected to the lower end of the center tube (115) by extending horizontally rearward.

2. The bicycle of claim 1, further comprising: a spring (117).

3. It is formed on the top surface of the top tube (113) to connect the upper body of the user, i.e., the chest and abdomen. A flat portion (120) that is in contact with the surface and provides stable support; The seat is formed at the tip of the top tube (113) to accommodate both shoulders of a user lying face down. Supporting shoulder hook (121), The rear end of the top tube (113) is inclined backward and protrudes upward. a seat portion (122) for supporting the buttocks of a person; The stanchion tube (111) is connected to the head tube (112) on both sides of the upper end thereof. and a handle (125) for non-interfering mounting. bicycle.

4. A cap (150) is further attached to the outside of the frame (110).

2. The bicycle of claim 1.

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