Standing tricycle having tilt suppression function

Abstract

The present invention relates to a standing tricycle having a tilt suppression function. A standing tricycle according to the present invention includes: a first body unit including a first body and a handle coupled to the first body; a driving wheel unit coupled to the first body; a second body unit including a left body having one portion coupled to a left portion of the first body and the other portion configured to be vertically rotatable, and a right body having one portion coupled to a right portion of the first body and the other portion configured to be vertically rotatable; driven wheel units connected to the end of the other portion of the left body and the end of the other portion of the right body, respectively; a tilting unit having one end coupled to the left body and the other end coupled to the right body and having a center portion by which the first body is caught; a passing pulley coupled to the first body; a pedal unit having one end coupled to the left and right bodies and the other end configured to be vertically rotatable; and a power transmission unit configured to connect the pedal unit to the driving wheel unit and have an intermediate portion extending through the passing pulley so that the driving force generated by the operation of the pedal unit can be transferred to the driving wheel unit.

Description

Standing tricycle with tilt suppression function

[0001] The present invention relates to a standing tricycle, and more particularly, to a standing tricycle that can easily maintain its center of gravity by suppressing tilting when operating a pedal unit.

[0002] The children's three-wheeled kickboard (Trider) currently being sold as a product obtains driving power by rotating the rear wheel left and right by folding and unfolding the rear wheel.

[0003] Because the movement of closing and extending both legs does not provide a large driving force, existing children's three-wheeled kickboards have the problem of being slow and the movement of closing and extending the legs is uncomfortable. In addition, because it does not tilt, there is a possibility of overturning when driving around corners. Therefore, a standing three-wheeled bicycle (Prior Art Application No. 10-2015-0064281) that is driven by operating the pedal unit was developed. However, the prior art had the problem that although the body does not tilt when the pedal unit moves upward, a force is applied to the body to tilt when the raised pedal unit is pressed.

[0004] The present invention has been made to solve the above-mentioned conventional problems, and the purpose of the present invention is to provide a three-wheeled bicycle that can safely travel around a corner by tilting when traveling around a corner in a standing three-wheeled bicycle, and in which the force that tends to tilt the first body part and the second body part is hardly applied when pressing the raised pedal part or the pedal parts placed on the left and right bodies are pressed.

[0005] The problems to be solved by the present invention are not limited thereto, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

[0006] In order to achieve the above-described object, the present invention comprises: a first body part comprising a first body and a handle coupled to the first body; a driving wheel part coupled to the first body; a second body part comprising a left body having one end coupled to the left side of the first body and the opposite end configured to be rotatable up and down, and a right body having one end coupled to the right side of the first body and the opposite end configured to be rotatable up and down; a driven wheel part coupled to an end of the opposite side of the left body and an end of the opposite side of the right body, respectively; a tilting part having one end coupled to the left side of the body and the other end coupled to the right side of the body and configured to hook the first body at the center, or having the center end coupled to the first body so as to be rotatable, one end hooked to the left side of the body, and the other end hooked to the right side of the body; a light pulley coupled to the first body or the second body part; a pedal part having one end coupled to the second body part and the other end configured to be rotatable up and down; And it is characterized by including a power transmission unit configured to connect a pedal unit to a driving wheel unit and transmit driving power generated by operation of the pedal unit to the driving wheel unit by configuring the middle portion via a pulley;

[0007] Additionally, the left and right bodies are characterized in that one end is connected to the first body and a tilting part is connected to the middle portion.

[0008] In addition, the tilting part is characterized by being composed of a catch member having one end connected to the left body and the other end connected to the right body, and a catch pulley that is configured to be rotatably connected to the first body and caught in the middle portion of the catch member.

[0009] In addition, when viewed from above, the left body and the right body are connected to the first body portion located on both sides of the driving wheel portion, and the tilting portion is characterized in that the first body portion located at the rear of the driving wheel portion is configured to be caught on the middle portion of the left body and the middle portion of the right body.

[0010] In addition, the left and right bodies are characterized in that one end is connected to the first body, the other end is extended downward by a certain length from the portion connected to the first body, and then is bent and extended toward the driven wheel portion, and the pedal portion is connected to the bent portion.

[0011] In addition, the second body part rotation center axis is characterized by being located above the pedal part rotation center axis.

[0012] In addition, in a tricycle in which a diesel pulley is connected to the first body, the diesel pulley is characterized in that it is located above the rotational center axis of the second body.

[0013] In addition, in a tricycle in which a diesel pulley is coupled to a second body part, the diesel pulley is characterized in that it is coupled to a left body part and a right body part located above a pedal part where a power transmission part is coupled.

[0014] In addition, in a tricycle in which a diesel pulley is coupled to a second body part, the diesel pulley is characterized in that it is coupled to the left front part of the body and the right front part of the body located above the clutch part.

[0015] In addition, in a three-wheeled bicycle steered by a driven wheel, the driven wheel is connected to the rear end of the left body and the rear end of the right body so that the front and rear parts can rotate left and right, and the rotational center axis of the driven wheel is configured to tilt backward, and the width of the driven wheel rim in contact with the ground is configured to be slightly wider so that when the left and right bodies tilt, the driven wheel does not tilt and the front and rear parts rotate left and right.

[0016] In addition, the part of the pedal section where the foot is placed is characterized by being located on an imaginary line drawn in a straight line from the point located exactly in the center between the left and right body rotation centers when viewed from above to the part of the driven wheel that is in contact with the ground.

[0017] In addition, it is characterized in that when the pedal part is rotated downward, the pedal part is configured to rest on the left and right bodies or the pedal part is configured to be positioned above the left and right bodies.

[0018] According to an embodiment of the present invention, when driving around a corner, the first body part and the second body part can be tilted by tilting the steering wheel sideways, thereby safely driving around a corner, and when pressing the raised pedal part or the pedal parts placed on the left and right bodies, there is almost no force applied to tilt the first body part and the second body part, so that the center of gravity can be easily maintained.

[0019] The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

[0020] FIG. 1 is a side view of a three-wheeled bicycle in which the left pedal part is moved upward in the first embodiment of the present invention.

[0021] FIG. 2 is a side view of a three-wheeled bicycle in which both pedal sections are mounted on the left and right bodies in the first embodiment of the present invention.

[0022] Figure 3 is an enlarged view and rear view of section a in Figure 2.

[0023] In Fig. 4, a is an enlarged view and a plan view of a main part for explaining the tilting part.

[0024] In Fig. 4, b is an enlarged view and side view of the main body for explaining the tilting part.

[0025] Figure 5 is a side view of a tricycle equipped with training wheels instead of a tilting member.

[0026] Figure 6 is a side view of a three-wheeled bicycle according to a second embodiment of the present invention.

[0027] Figure 7 is a plan view of a main body according to a second embodiment of the present invention.

[0028] Figure 8 is a side view of a three-wheeled bicycle according to a third embodiment of the present invention.

[0029] Figure 9 is a plan view of a main body according to a third embodiment of the present invention.

[0030] The specific details of the present invention, including the problems to be solved, the means for solving the problems, and the effects of the invention, are included in the embodiments and drawings described below. The advantages and features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below, along with the accompanying drawings.

[0031] Referring to FIGS. 1 to 9, a standing three-wheeled bicycle according to the present invention can be configured to include a first body part (100), a driving wheel part (200), a second body part (300), a driven wheel part (400), a tilting part (500), a pedal part (600), a diesel pulley (700), and a power transmission part (800).

[0032] Figures 1 to 5 illustrate a first embodiment of the present invention, which is structured such that a fuel pulley (700) and a pedal unit (600) are coupled to left and right bodies (310, 320).

[0033] In an embodiment of the present invention, the first body part (100) is composed of a handle (110) and a first body.

[0034] In the first embodiment of the present invention, the handle (110) extends to both sides and the extended portion is configured so that the user can hold it with his or her hand.

[0035] In the first embodiment of the present invention, the first body is composed of a rotating body (120), a fixed body (130), and a driving wheel center shaft (160).

[0036] In the first embodiment of the present invention, the rotating body (120) is composed of a first rotating body (121), a second rotating body (122), and a third rotating body (123).

[0037] In the first embodiment of the present invention, one end of the first rotating body (121) is connected to the middle portion of the handle (110) and the other end extends downward. In addition, the first rotating body (121) is provided with a hook (124).

[0038] The above-mentioned hook part (124) is positioned above the first fixed body (131) described later among the first rotating body (121) portions, and protrudes slightly forward from a portion close to the first fixed body (131), and then extends slightly further to both sides from the front end, and the extended portion is configured to be capable of coupling the power transmission portion (800) described later.

[0039] In the first embodiment of the present invention, one end of the second rotating body (122) is fixedly connected to the lower end of the first rotating body (121) and the other end protrudes slightly forward.

[0040] In the first embodiment of the present invention, the third rotating body (123) is fixedly connected at the center to the other end of the second rotating body (122), and both ends protrude slightly to both sides and then bend 90 degrees to extend downward. The third rotating body (123) is configured so that a driving wheel part (200) to be described later can be fitted between the both ends, and the portion of the third rotating body (123) that protrudes slightly to both sides is configured to be located slightly in front of the rotation center axis (p) of the rotating body when viewed from the side, so that the power transmission part (800) to be described later does not come into contact with the third rotating body (123).

[0041] In the first embodiment of the present invention, the drive wheel center shaft (160) is configured so that both ends are connected to the left and right sides of the lower portion of the third rotating body (123), and the center portion can be connected to the drive wheel portion (200) described later.

[0042] In the first embodiment of the present invention, the fixed body (130) is composed of a first fixed body (131) and a second fixed body (132).

[0043] In the first embodiment of the present invention, the first fixed body (131) is extrapolated and connected to the lower and middle portions of the first rotating body (121). That is, the lower and middle portions of the first rotating body (121) are fitted and connected to the first fixed body (131), thereby enabling the handle (110), the rotating body (120), and the driving wheel (200) to rotate.

[0044] In the first embodiment of the present invention, the second fixed body (132) has one end fixedly connected to the middle portion of the first fixed body (131), and the other end extends downward to a point located at the upper rear of the driving wheel (210). In addition, the other end is configured as an axis to enable an extrapolation connection of a tilting part (500) described later, and a coupling axis (133) protruding to both sides is provided at the upper portion.

[0045] In an embodiment of the present invention, the driving wheel part (200) is composed of a driving wheel (210) and a clutch part (220).

[0046] In the first embodiment of the present invention, the driving wheel (210) is configured to be tiltable and is configured to be rotatable by being connected to the center of the driving wheel center axis (160). On both sides of the driving wheel (210), protrusions that slightly protrude in both directions along the driving wheel center axis (160) are provided.

[0047] In the first embodiment of the present invention, the clutch unit (220) is configured as a pair and is configured to rotate the driving wheel (210) by being externally coupled to the protrusions on both sides. This clutch unit (220) is configured with a pulley unit and a one-way bearing.

[0048] In the first embodiment of the present invention, the outer surface of the pulley part is configured in the shape of a conventional pulley so as to be able to wind the power transmission part (800), and holes penetrating left and right are provided in the center portions of both sides of the pulley part.

[0049] In the first embodiment of the present invention, the one-way bearing is configured as a bearing that transmits rotational force in only one direction, which is currently sold. The one-way bearing is fitted into a hole provided in the pulley to fix the outer surface of the one-way bearing to the inner surface of the pulley, and the one-way bearing is externally coupled to a protrusion to fix the inner surface of the one-way bearing to the protrusion. By combining the one-way bearing as described above, when the pulley rotates forward, the one-way bearing rotates the driving wheel (210), and when the pulley rotates backward, the one-way bearing blocks the rotational force of the pulley, so that the driving wheel (210) does not rotate backward.

[0050] In an embodiment of the present invention, the second body part (300) is composed of a left body (310) that is externally coupled to the left coupling axis (133) and a right body (320) that is externally coupled to the right coupling axis (133). The rear portions of the left and right bodies (310, 320) are configured to be rotatable up and down with the coupling axis (133) as the central axis of rotation.

[0051] The left body (310) structure and the right body (320) structure are configured identically. Therefore, in the first to third embodiments, the description of the right body (320) is omitted and only the left body (310) is described.

[0052] In the first embodiment of the present invention, the left body (310) is connected at one end to the left coupling shaft (133), and the other end is extended downward by a certain length and then bent to extend rearward. In addition, it moves sideways little by little from one end to the other end, and the portion located below the footrest (640) described later is configured to be located above the tilting boundary line (x).

[0053] The above tilting boundary line (x) is an imaginary line drawn in a straight line from a point located at the exact center between the left body rotation center axis (n) and the right body rotation center axis (n) when drawing a plan view as in Fig. 7 to the part of the driven wheel (420) that is in contact with the ground.

[0054] The left body (310) is provided with a pedal coupling part (330), a pulley coupling part (340), a first hole, and a second hole.

[0055] The above pedal connection part (330) protrudes slightly to both sides from the bent left body (310) portion, and then is bent 90 degrees to extend slightly further between the rear and the upper portion, and a hole is provided through the extended portion on the left and right to allow the pedal portion (600) to be connected.

[0056] The above pulley coupling portion (340) protrudes upward from each of the left and right upper portions of the left body (310), and the protruding portion is provided with holes extending left and right.

[0057] The above first hole is configured as a hole that penetrates left and right through the upper part of the left body (310), and the hole is configured so that the coupling shaft (133) can be fitted and connected.

[0058] The above second hole is configured as a hole that penetrates left and right in the left body (310) portion facing the tilting part (500) described later, and an elastic member having holes that penetrate left and right is fitted into the hole.

[0059] Meanwhile, when the diesel pulley (700) is coupled to the left and right bodies (310, 320), the left and right bodies (310, 320) may be coupled to a fixed body as described above or may be coupled to a driving wheel center shaft (160) as in the third embodiment described below. When the left and right bodies (310, 320) are coupled to the driving wheel center shaft (160), the diesel pulley (700) may be coupled to a middle portion of the left body (310) and a middle portion of the right body (320).

[0060] In the embodiment of the present invention, the driven wheel part (400) is connected to the lower part of the other end of the left body (310) and the lower part of the other end of the right body (320), respectively. However, since the structures of the driven wheel parts (400) on both sides are the same, in the first to third embodiments, only the left driven wheel part (400) is described.

[0061] The driven wheel part (400) is composed of a driven wheel frame (410) and a driven wheel (420).

[0062] In the first embodiment of the present invention, the driven wheel frame (410) is connected at the center to the lower part of the other end of the left body (310), and both ends are bent 90 degrees at each of the left and right sides and protrude downward. In addition, holes extending left and right are provided at each end.

[0063] In the first embodiment of the present invention, the driven wheel (420) is configured to be smaller in size than the driving wheel (200) and is rotatably coupled to the driven wheel frame (410). That is, the driven wheel (420) is inserted between the driven wheel frames (410) protruding downward, and then pins are inserted into holes on both sides of the driven wheel frame (410) and the driven wheel (420) to couple the driven wheel (420) to the driven wheel frame (410).

[0064] In an embodiment of the present invention, the tilting part (500) is configured to enable tilting while preventing the first body part (100) from tilting backward.

[0065] This tilting part (500) is configured so that the other end of the second fixed body (132) is hooked to the left and right bodies (310, 320) so that the first body part (100) and the second body part (300) can be tilted laterally without causing the first body part (100) to tilt backward.

[0066] In the first embodiment of the present invention, the tilting part (500) is configured such that the center portion is externally connected to the other end of the second fixed body (132), as shown in Fig. 4, and both ends are extended in both sides and rotatable back and forth. In addition, both ends are fitted into elastic member holes fitted into the second holes, so that the other ends of the second fixed body (132) are hooked to the left and right bodies (310, 320).

[0067] The structure of the tilting part (500) configured as shown in FIG. 4 is the same technology as the trikke currently being sold as a product. Therefore, the structure in which both ends of the tilting part (500) are fitted into the left and right bodies (310, 320) respectively and the principle of tilting (tilting) the first body part (100) and the second body part (300) are the same as the trikke and are described in detail in the prior art (application number PCT / US2005 / 021675). Therefore, the description of the structure in which both ends of the tilting part (500) are fitted into the left and right bodies (310, 320) respectively and the principle of tilting the first body part (100) and the second body part (300) is omitted here.

[0068] In the embodiment of the present invention, the pedal unit (600) is composed of a left pedal unit (600) coupled to the left body (310) and a right pedal unit (600) coupled to the right body (320). Since the structure of the right pedal unit (600) is the same as the structure of the left pedal unit (600), the description of the right pedal unit (600) is omitted in the first to third embodiments.

[0069] In the first embodiment of the present invention, the pedal part (600) is composed of a pedal frame (610) and a footrest (640).

[0070] In the first embodiment of the present invention, the pedal frame (610) has one end fitted between the pedal coupling portion (330) provided on the left body (310) and the other end extends rearward. In addition, the rear end is configured to be rotatable up and down, and is configured to be placed on the left body (310) when the downward rotation is completed.

[0071] The pedal frame (610) is provided with a pedal bar (611) whose end is connected to the middle portion of the pedal frame (610) and whose other end extends vertically downward toward the oil pulley (700) when viewed from the rear.

[0072] In the first embodiment of the present invention, the footrest (640) is fixedly connected to the middle and rear portions of the pedal frame (610), and the upper portion is configured as a flat surface. The portion of the footrest (640) on which the rider's feet rest is configured to be positioned at the tilting boundary line (x) when viewed from above, so that when the pedal portion (600) rests on the left body (310), the first body portion (100) and the second body portion (300) are configured not to tilt due to the body weight of the rider pressing the pedal portion (600).

[0073] When the pedal part (600) is placed on the left body (310), the rear height of the pedal part (600) is configured to be similar to the height of the pedal part rotation center axis (m).

[0074] Even when the raised pedal part (600) is pressed, the first body part (100) and the second body part (300) do not tilt, so that when the pedal part (600) completes the downward rotation, the pedal part (600) may be configured to not be placed on the left and right bodies (310, 320) but positioned above the left and right bodies (310, 320).

[0075] That is, when the power transmission unit (800) is connected to the diesel pulley (700) and configured to be wound, and when the pedal unit (600) is lowered to a certain height, the diesel pulley (700) is caught by the pulley coupling unit (340) and configured so that the diesel pulley (700) does not rotate further, the pedal unit (600) can be configured so that it does not go down further.

[0076] In the embodiment of the present invention, the power transmission pulley (700) is configured to allow the power transmission unit (800) to pass through a portion located above the pedal unit (600) in order to pull the power transmission unit (800) by manipulating the pedal unit (600).

[0077] In the first embodiment of the present invention, the diesel pulley (700) is configured as a left-right pair and is configured in the same shape as a conventional pulley so that a power transmission part (800) can be wound around the outer circumference. After the diesel pulley (700) is inserted between the pulley coupling parts (340), a pin is inserted into the pulley coupling parts (340) and the diesel pulley (700) to allow the diesel pulley (700) to rotate back and forth.

[0078] The diesel pulley (700) is configured to be coupled to the left and right body (310, 320) portions located close to the second body rotation center axis (n) so that when the raised pedal portion (600) is pressed, the diesel pulley (700) pulls the clutch portion (220) toward the second body rotation center axis (n). In addition, the front portion of the diesel pulley (700) is configured to be located at a point close to the first fixed body (131) while being located on the side of the first fixed body (131) when viewed from the front, and is configured to be located at the rotation center axis (p) of the rotary body when viewed from the side.

[0079] Meanwhile, the diesel pulley (700) may be coupled to the first fixed body (131) located above the coupling shaft (133) rather than the second body (300). Even when the diesel pulley (700) is coupled to the first fixed body (131) located above the coupling shaft (133), the front position of the diesel pulley (700) is configured in the same manner as above.

[0080] In the embodiment of the present invention, the power transmission unit (800) is a series of components that provide propulsive force so that the driving wheel (210) is forcibly driven by the stepping or releasing operation of the pedal unit (300).

[0081] The above power transmission unit (800) is configured to force the clutch unit (220) to rotate by being wound around or released from the clutch unit (220) by the forward or reverse rotation of the clutch unit (220) by the operation of the pedal unit (600), and is composed of a left power transmission unit (800) that connects the left pedal unit (600) to the left clutch unit (220) and a right power transmission unit (800) that connects the right pedal unit (600) to the right clutch unit (220). Since the structure of the right power transmission unit (800) is configured the same as the structure of the left power transmission unit (800), in the first to third embodiments, the power transmission unit (800) is described only with respect to the left power transmission unit (800).

[0082] In the first embodiment of the present invention, the power transmission unit (800) is connected at one end to the left pedal bar (611), the middle part is connected to the left pulley, and after being wound around one or more turns, the other end is connected to the left part of the hook part (124). In particular, a part of the power transmission unit (800) is formed of an elastic body (810) so that it is tensioned by the action of stepping on the pedal part (600) and provides a restoring force the moment the foot is lifted from the pedal part (600), thereby causing the pedal part (600) to rise and the clutch part (220) to rotate in reverse. In addition, the middle part is configured to pass through a pulley (700) so that the power transmission unit (800) can be pulled by pressing the raised pedal part (600).

[0083] It is preferable that the remaining portion of the power transmission unit (800) be formed of a dyneema rope, excluding the portion formed of an elastic body (810). This is because the dyneema rope can sufficiently withstand a considerably large tensile stress while being able to be wound and unwound smoothly.

[0084] The pedal bar (611) portion where the power transmission unit (800) is combined is configured to be positioned vertically downwards from the diesel pulley (700) when viewed from the rear.

[0085] Meanwhile, the power transmission unit may be configured as a single unit without elasticity, such that when one pedal unit goes down, the other pedal unit goes up. That is, a pulley of the same form as a conventional pulley is attached to the lower front part of the first rotating body. In addition, the power transmission unit may be configured such that one end is attached to the left pedal unit, and the other end is sequentially connected to the right pedal unit via the left drive pulley, the left clutch unit, the pulley, the right clutch unit, and the right drive pulley.

[0086] When the pedal unit (600) is coupled to the left and right bodies (310, 320) and the oil pulley (700) is positioned above the pedal unit (600) and coupled to the left and right bodies (310, 320) at a position close to the second body rotation center axis (n), when the raised pedal unit (600) is pressed, the force that tends to tilt the first body unit (100) and the second body unit (300) is hardly applied. In addition, when the pedal unit (600) placed on the left and right bodies (310, 320) is pressed, the pressing portion is positioned vertically above the tilting boundary line (x), so the first body unit (100) and the second body unit (300) do not tilt.

[0087] The first body part (100) and the second body part (200) do not tilt well when the pedal part (600) is pressed vertically, but tilt well when the pedal part (600) is raised and the handle (110) is tilted sideways when the pedal part (600) is placed on the left and right bodies (310, 320).

[0088] When the handle (110) is rotated, the power transmission unit (800) located between the diesel pulley (700) and the clutch unit (220) is twisted, thereby rotating the handle (110) circularly. When the handle (110) is rotated left and right, the power transmission unit (800) located close to the clutch unit (220) rotates in a circle with the rotational center axis (p) of the rotating body as its central axis, and the power transmission unit (800) located between the diesel pulley (700) and the clutch unit (220) and close to the diesel pulley (700) is bent.

[0089] When the first body part (100) and the second body part (300) are tilted to the left, as the left body (310) rotates upward, the pedal part (600) placed on the left body (310) also rotates upward. Accordingly, the power transmission part (800) is wound around the clutch part (220) in a clockwise direction in the drawing by the tensile force of the elastic body (810). And as the right body (320) rotates downward, the right pedal part (600) is separated from the right body (320), but as the driving wheel (210) rotates, the power transmission part (800) is wound around the clutch part (220) in a counterclockwise direction in the drawing, and the right pedal part (600) rotates downward, so that the right pedal part (600) is maintained in a state placed on the right body (320).

[0090] Meanwhile, in the first embodiment and the second embodiment described below, the tilting part may not be coupled as shown in FIG. 5, but the auxiliary wheel (900) may be coupled.

[0091] That is, one end of the fixed body (130) is connected to the first rotating body (121), and the other end of the fixed body (130) extends to the rear ends of the left and right bodies (310, 320). In addition, even if an auxiliary wheel (900) having the same shape as a driven wheel (420) is connected to the other end of the fixed body (130), when the raised pedal part (600) is pressed, the force that tends to tilt the first body part (100) and the second body part (300) is hardly applied, and when the handle is tilted to the side, the first body part (100) and the second body part (300) are tilted well.

[0092] Conventional standing two-wheeled bicycles and tilting standing three-wheeled bicycles have the inconvenience of constantly maintaining balance while riding, as pedaling upward exerts a tilting force. Furthermore, existing standing three-wheeled bicycles without tilting have the significant risk of tipping over when cornering.

[0093] The present invention has the effect of making it easy to keep the center of gravity because when driving around a corner, the handle (110) is tilted to the side to tilt the first body part (100) and the second body part (300) and when pressing the raised pedal part (600) and when pressing the pedal part (600) placed on the left and right bodies (310, 320), the force that tends to tilt the first body part (100) and the second body part (300) is hardly applied.

[0094] Second embodiment

[0095] Figures 6 and 7 illustrate a second embodiment of the present invention. In the second embodiment, a fuel pulley (700) is coupled to the first body, and a pedal unit (600) is coupled to the left and right bodies (310, 320).

[0096] In the second embodiment of the present invention, the handle (110) extends to both sides and the extended portion is configured to be grippable by hand.

[0097] In the second embodiment of the present invention, the first body is composed of an eleventh body (140) whose one end is fixedly connected to the middle portion of a handle (110) and whose other end is extended downward, a twelfth body (150) which is bent from the lower end of the eleventh body (140) and extended rearward, and a driving wheel center shaft (160) whose both ends are joined to the left and right sides of the lower end of the eleventh body (140). The lower part of the eleventh body (140) and the front part of the twelfth body (150) are configured to be spread apart to both sides so that the driving wheel part (200) can be fitted and connected. In addition, the rear part of the twelfth body (150) is configured to be bent at a portion close to the rear end, extend slightly downward, and then be bent again to extend rearward, and the rear end is configured as an axis so that a catch pulley (520) described later can be extrapolated and connected. The lower left and right sides of the 11th body (140) are provided with holes extending left and right so that the ends of the drive wheel center shaft (160) can be inserted and connected.

[0098] In the second embodiment of the present invention, the coupling shaft (133) protrudes to both sides from both sides of the upper portion of the driving wheel (210) among the 11th body (140) portions, and the hook portion (124) protrudes slightly forward from the middle portion of the 11th body and then extends slightly further to both sides from the front end.

[0099] In the second embodiment of the present invention, the pulley coupling portion (340) protrudes slightly rearward from the middle portion of the 11th body (140) located above the coupling axis (133) and then extends slightly further to both sides from the rear end, and the portion extended laterally is configured to be able to extrapolate and couple the light pulley (700).

[0100] In the second embodiment of the present invention, the driving wheel (210) is sandwiched between the opened 11th body (140) portion and the opened 12th body (150) portion and is coupled to the lower end of the 11th body (140) by the driving wheel center shaft (160). A clutch unit (220) having the same structure as the first embodiment is coupled to both sides of the driving wheel (210).

[0101] In the second embodiment of the present invention, one end of the left body (310) is extrapolatedly coupled to the left coupling shaft (133), and one end of the right body (320) is extrapolatedly coupled to the right coupling shaft (133). In addition, the other ends of the left and right bodies (310, 320) are configured to extend downward by a certain length and then bend to extend rearward so as to be rotatable up and down, and the portion located below the footrest (640) is configured to be located above the tilting boundary line (x). A pedal coupling portion (330) having the same shape as the first embodiment is coupled to the bent portion of the left and right bodies (310, 320).

[0102] When the pedal part (600) is coupled to the left and right bodies (310, 320), and the oil pulley (700) is coupled to the first body part located above the second body part rotation center axis (n), and the height of the second body part rotation center axis (n) is configured to be similar to the height of the pedal part rotation center axis (m) or lower than the height of the pedal part rotation center axis (m), when the raised pedal part (600) is pressed, the first body part (100) and the second body part (300) are tilted. And the pedal part (600) is coupled to the left and right bodies (310, 320), and the oil pulley (700) is coupled to the first body part located above the second body part rotation center axis (n), and as the height of the second body part rotation center axis (n) becomes higher than the height of the pedal part rotation center axis (m), the force that causes the first body part (100) and the second body part (300) to tilt when the raised pedal part (600) is pressed becomes weaker. In addition, as the rear part of the pedal part (600) rises, the force that causes the first body part (100) and the second body part (300) to tilt when the raised pedal part (600) is pressed becomes weaker. Therefore, in order to prevent the force that tends to tilt the first body part (100) and the second body part (300) when the pedal part (600) is pressed while the pedal part (600) is slightly raised, the second body part rotation center axis (n) is configured to be positioned above the pedal part rotation center axis (m) at a certain distance from the height of the pedal part rotation center axis (m).

[0103] In the second embodiment of the present invention, the driving wheel part (200) is configured to not rotate left and right, so that the driving wheel part (400) can be rotated to change the direction of movement. Accordingly, the structure of the driving wheel part (400) is configured so that the front and rear portions of the driving wheel part (400) can rotate left and right when the left and right bodies (310, 320) are tilted.

[0104] In the second embodiment of the present invention, the driven wheel frame (410) is connected at the center portion to the lower rear portion of the left body (310) so as to be rotatable 360 ​​degrees, and both ends are bent 90 degrees and extend slightly downward. In addition, holes extending left and right are provided in each of the two downwardly extending portions.

[0105] The structure in which the driven wheel frame (410) is coupled to the left body (310) is configured to rotate left and right at the front and rear of the driven wheel frame (410) when the left body (310) tilts sideways, in the same structure as that of the existing children's three-wheeled kickboard Trider. In addition, the rotational center axis inclination (q) of the driven wheel part is configured to tilt backwards in the opposite direction to that of the Trider, so that when the left and right bodies (310, 320) tilt sideways, the rear of the driven wheel part (400) rotates in the direction in which the left and right bodies (310, 320) tilt.

[0106] In the second embodiment of the present invention, the driven wheel (420) is coupled to the driven wheel frame (410). That is, the driven wheel (420) is inserted between both ends of the driven wheel frame (410), and then pins are inserted into the driven wheel frame (410) and the driven wheel (420) to couple the driven wheel (420) to the driven wheel frame (410).

[0107] The width of the rim of the driven wheel (420) in contact with the ground is configured to be slightly wider so that when the left and right bodies (310, 320) tilt laterally, the driven wheel part (400) does not tilt laterally and the front and rear parts rotate left and right. In addition, when viewed from the side, the part of the driven wheel (420) in contact with the ground is configured to be located on the rotation center axis (q) of the driven wheel part.

[0108] In the second embodiment of the present invention, the tilting part (500) is composed of a catch pulley (520), a catch member (510), and an overturn prevention member (530).

[0109] In the second embodiment of the present invention, the hook pulley (520) is configured to have a groove formed on the outer surface like a conventional pulley so that the hook member (510) can be wound around it. In addition, it is configured to be rotatable by being externally coupled to a shaft provided at the rear end of the 12th body (150).

[0110] In the second embodiment of the present invention, the engaging member (510) is configured such that both ends are connected to the left and right body (310, 320) portions facing the engaging pulley (520), and the middle portion passes through the lower portion of the engaging pulley (520). That is, the engaging pulley (520) is configured to rest on the middle portion of the engaging member (510), and the lower portion of the engaging pulley (520) is configured to be positioned slightly below the left and right body (310, 320) portions to which the engaging member (510) is connected.

[0111] The catch member (510) can be composed of a member that bends well without stretching when an external force is applied. In the embodiment of the present invention, the catch member (510) is composed of a dyneema rope.

[0112] In the second embodiment of the present invention, the rollover prevention member (530) is made of a dyneema rope and is connected to the left and right body (310, 320) portions where both ends face the rear of the 12th body (150). In addition, when the first body portion (100) tilts forward even slightly during a sudden stop, the rear of the 12th body (150) is configured to be caught on the center portion of the rollover prevention member (530), thereby preventing the first body portion (100) from falling forward.

[0113] If the rear part of the pedal part is configured to be located above the left and right body when the pedal part is not raised, an anti-rollover member is not provided.

[0114] The tilting part (500) may be configured like the first embodiment in a structure that steers with the driven wheel part (400) like the second embodiment, or may be configured like the second embodiment in a structure that steers with the driving wheel part (200) like the first embodiment.

[0115] In the second embodiment of the present invention, the pedal part (600) has the same structure as the first embodiment.

[0116] In the second embodiment of the present invention, the diesel pulley (700) is configured in the same shape as the first embodiment and is rotatably coupled to the left and right sides of the pulley coupling portion (340). In addition, it is configured to be positioned above the second body portion rotation center axis (n) so that when the raised pedal portion (600) is pressed, the power transmission portion (800) pulls the upper portion of the first body portion (100) toward the driven wheel portion (400).

[0117] In the second embodiment of the present invention, the power transmission unit (800) is configured with the same structure as the first embodiment.

[0118] Even when configured as in the second embodiment, when the raised pedal part (600) is pressed, the force that tends to tilt the first body part (100) and the second body part (300) is hardly applied, and when the handle (110) is tilted to the side, the first body part (100) and the second body part (300) are tilted well.

[0119] Third embodiment

[0120] FIG. 8 and FIG. 9 illustrate a third embodiment of the present invention. In the third embodiment, the pedal portion (600) is configured to pull the power transmission portion (800) upward when the raised pedal portion (600) is pressed.

[0121] In the third embodiment of the present invention, the driven wheel part (400), the tilting part (500), and the driving wheel part (200) are configured in the same manner as in the second embodiment, and a diesel pulley is not provided. Therefore, in the third embodiment of the present invention, only the first body part (100), the second body part (300), the pedal part (600), and the power transmission part (800) will be described.

[0122] In the third embodiment of the present invention, the handle (110) and the 12th body (150) are configured similarly to the second embodiment, and the 11th body (140) is configured similarly to the structure of the second embodiment without a coupling shaft and a pulley coupling portion. In addition, the driving wheel center shaft (160) is configured such that both ends protrude to both sides of the 11th body (140), and the protruding portions are configured as a shaft so that the left and right bodies (310, 320) can be extrapolated and coupled.

[0123] In the third embodiment of the present invention, one end of the left body (310) is externally coupled to the left end of the driving wheel center shaft (160), and one end of the right body (320) is externally coupled to the right end of the driving wheel center shaft (160). In addition, the other ends of the left and right bodies (310, 320) are configured to be able to rotate up and down while extending rearward, respectively.

[0124] The left body may be coupled to the driving wheel center axis as described above, or may be provided with a protrusion that protrudes laterally from a first body portion located on the side of the driving wheel and coupled to the protrusion.

[0125] In the third embodiment of the present invention, the pedal part (600) is composed of a first pedal frame (620), a second pedal frame (630), and a footrest (640).

[0126] In the third embodiment of the present invention, the first pedal frame (620) is connected to a left body (310) located at the rear side of the driving wheel (200) in the same structure as the first embodiment. The other end of the first pedal frame (620) extends upward from the rear of the left body (310) and is configured to rest on the left body (310) when the pedal unit (600) completes its downward rotation.

[0127] In the third embodiment of the present invention, the second pedal frame (630) is configured such that one end is connected to the front end of the first pedal frame (620) and the other end extends upward. When the rear end of the first pedal frame (620) is raised to the maximum, the other end of the second pedal frame (630) is positioned between the rear and upper ends of the clutch unit (220) and rotates to a point close to the clutch unit (220). When the first pedal frame (620) is placed on the left and right bodies (310, 320), the other end of the second pedal frame (630) is configured such that it rotates to a point close to the vertically upper end of the pedal unit rotation center axis (m), and when the raised footrest (640) is pressed, the other end of the second pedal frame (630) is configured such that it rotates between the rear and upper ends.

[0128] In the third embodiment of the present invention, the footrest (640) is connected to the rear of the first pedal frame (620) in the same structure as the first embodiment.

[0129] In the third embodiment of the present invention, the power transmission unit (800) is connected at one end to the other end of the second pedal frame (630), and the middle portion is connected to the pulley portion via the pulley portion, and after being wound by one or more turns, the other end is connected to the left portion of the hook portion (124). In addition, a part of the power transmission unit (800) is composed of an elastic body (810) similar to the first embodiment.

[0130] In the third embodiment, when the first pedal frame (620) is coupled to the left and right bodies (310, 320) and the other end of the second pedal frame (630) and the clutch unit (220) are connected to the power transmission unit (800), when the raised footrest (640) is pressed, the other end of the second pedal frame (630) rotates upward or between the upper and rearward to pull the power transmission unit (800) upward, or the other end of the second pedal frame (630) rotates toward the driven wheel unit (400) to pull the power transmission unit (800) rearward. However, if the height of the part of the second pedal frame (630) where the power transmission unit (800) is coupled is higher than the clutch unit (220), the force that tends to tilt the first body unit (100) and the second body unit (300) is hardly applied. That is, when the raised foot (640) is pressed, if the power transmission unit (800) pulls the clutch unit (220) upward, the first body unit (100) and the second body unit (300) do not tilt, and if the power transmission unit (800) pulls the clutch unit (220) downward, the first body unit (100) and the second body unit (300) tilt.

[0131] Even in the case of a configuration like the third embodiment above, when the raised pedal part (600) is pressed, the force that tends to tilt the first body part (100) and the second body part (300) is hardly applied, and when the handle (110) is tilted to the side, the first body part (100) and the second body part (300) are tilted well.

[0132] In this way, it will be understood by those skilled in the art that the technical configuration of the present invention described above can be implemented in other specific forms without changing the technical idea or essential features of the present invention.

[0133] Therefore, the embodiments described above should be understood as being exemplary and not restrictive in all respects, and the scope of the present invention is indicated by the claims described below rather than the detailed description above, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

Claims

1. A first body part comprising a first body and a handle coupled to the first body; A driving wheel part coupled to the first body; A second body part comprising a left body part in which one part is connected to the left part of the first body and the opposite part is configured to be rotatable up and down, and a right body part in which one part is connected to the right part of the first body and the opposite part is configured to be rotatable up and down; A driven wheel part connected to the opposite end of the left body and the opposite end of the right body, respectively; A tilting part having one end connected to the left body and the other end connected to the right body and configured such that the first body is caught in the middle portion, or the middle portion is rotatably connected to the first body and configured such that one end is caught in the left body and the other end is caught in the right body; A pulley coupled to the first body or the second body; A pedal part having one end connected to the second body part and the other end configured to be rotatable up and down; and A standing three-wheeled bicycle characterized by comprising: a power transmission unit configured to connect the pedal unit to the driving wheel unit and transmit driving force generated by operation of the pedal unit to the driving wheel unit through a middle portion via the pulley; 2. In paragraph 1, A standing three-wheeled bicycle characterized in that each of the left body and the right body is connected to the first body at one end and the tilting part is connected to the middle portion.

3. In paragraph 1, A standing tricycle characterized in that the tilting part is composed of a catch member having one end connected to the left body and the other end connected to the right body, and a catch pulley that is rotatably connected to the first body and is configured to catch on the middle portion of the catch member.

4. In paragraph 1, When viewed from above, the left body and the right body are connected to the first body portion located on both sides of the driving wheel portion, A standing three-wheeled bicycle characterized in that the tilting part is configured such that the first body part located behind the driving wheel part is caught between the middle part of the left body and the middle part of the right body.

5. In paragraph 1, A standing three-wheeled bicycle characterized in that each of the left and right bodies is connected at one end to the first body, the other end extends downward from the portion connected to the first body by a certain length, then bends and extends toward the driven wheel portion, and the pedal portion is connected to the bent portion.

6. In paragraph 1, A standing tricycle characterized by the fact that the rotational center axis of the second body part is located above the rotational center axis of the pedal part.

7. In paragraph 1, In a three-wheeled bicycle in which the above-mentioned pulley is coupled to the first body, A standing three-wheeled bicycle characterized in that the above-mentioned fuel pulley is located above the rotational center axis of the second body part.

8. In paragraph 1, In a three-wheeled bicycle in which the above-mentioned pulley is connected to the second body part, A standing three-wheeled bicycle characterized in that the above-mentioned pulley is connected to the left body portion and the right body portion located above the pedal portion where the power transmission portion is connected.

9. In paragraph 1, In a three-wheeled bicycle in which the above-mentioned pulley is connected to the second body part, A standing three-wheeled bicycle characterized in that the above-mentioned oil pulley is connected to the front part of the left body and the front part of the right body located above the clutch part.

10. In paragraph 1, In a three-wheeled bicycle steered by the above-mentioned driven wheel, A standing three-wheeled bicycle characterized in that the driven wheel part is connected to the rear end of the left body and the rear end of the right body so that the front and rear parts can rotate left and right, the rotational center axis of the driven wheel part is tilted backward, and the width of the driven wheel rim in contact with the ground is configured to be slightly wider so that when the left and right bodies are tilted, the driven wheel part does not tilt and the front and rear parts rotate left and right.

11. In paragraph 1, A standing tricycle characterized in that the footrest portion of the pedal portion is located on an imaginary line drawn straight from the point located exactly in the center between the left and right body rotation centers when viewed from above to the part of the driven wheel that is in contact with the ground.

12. In paragraph 1, A standing three-wheeled bicycle characterized in that when the pedal part is rotated downward, the pedal part is configured to rest on the left body and the right body, or the pedal part is configured to be positioned above the left body and the right body.

13. A first body part comprising a first body and a handle coupled to the first body; A driving wheel part coupled to the first body; A second body part comprising a left body part in which one part is connected to the left part of the first body and the opposite part is configured to be rotatable up and down, and a right body part in which one part is connected to the right part of the first body and the opposite part is configured to be rotatable up and down; A driven wheel part connected to the opposite end of the left body and the opposite end of the right body, respectively; A tilting part configured such that one end is connected to the left body and the other end is connected to the right body and the first body is hung on the center portion, or the center portion is rotatably connected to the first body and one end is hung on the left body and the other end is hung on the right body; and A pedal unit comprising a first pedal frame having one end connected to the second body part and the other end extending toward the driven wheel part, a footrest connected to the first pedal frame, and a second pedal frame extending upward from one end of the first pedal frame when the footrest is not raised; A standing three-wheeled bicycle characterized by comprising a power transmission unit configured to connect the second pedal frame to the driving wheel unit so as to transmit driving power generated by operating the pedal unit to the driving wheel unit.

14. In paragraph 13, A standing three-wheeled bicycle characterized in that when the raised footrest is pressed, the second pedal frame portion to which the power transmission unit is coupled is configured to rotate upward or toward the driven wheel portion.

15. A first body part comprising a first body and a handle coupled to the first body; A driving wheel part coupled to the first body; A second body part comprising a left body part in which one part is connected to the left part of the first body and the opposite part is configured to be rotatable up and down, and a right body part in which one part is connected to the right part of the first body and the opposite part is configured to be rotatable up and down; A driven wheel part connected to the opposite end of the left body and the opposite end of the right body, respectively; An auxiliary wheel coupled to the end of the first body located on the side of the above-mentioned driven wheel; A pulley coupled to the first body or the second body; A pedal part having one end connected to the second body part and the other end configured to be rotatable up and down; A standing three-wheeled bicycle characterized by comprising: a power transmission unit configured to connect the pedal unit to the driving wheel unit and transmit driving force generated by operation of the pedal unit to the driving wheel unit through a middle portion via the pulley;

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