Wheel capable of crossing obstacle by using axial movement

Abstract

This wheel capable of crossing an obstacle by using an axial movement can easily climb over stairs or obstacles by improving a mechanical structure thereof. The present invention enables the elderly and the infirm, children, disabled people, and the like to climb by themselves over obstacles having stepped differences, such as stepped protrusions and stairs, thereby reducing inconvenience in daily life. According to the present invention, the wheel can be applied to all fields related to movement means, such as a wheelchair, a stroller, a cart, and a robot, and thus can be widely distributed and provide convenience in life.

Description

Wheels that overcome obstacles using axis movement

[0001] The present invention relates to a wheel, and more particularly, to an obstacle-climbing wheel that utilizes axis movement to easily climb stairs or obstacles by improving the mechanical structure of the wheel.

[0002] In modern society, wheels are widely used as an indispensable component, and are applied to various devices such as wheelchairs, strollers, carts, and robots for the convenience of life.

[0003] In general, a wheel is an example of one that has a tube inside that adjusts the elasticity of the outside of the wheel with air pressure, but in the case of small wheels with a small diameter, it is made of a material such as urethane or rubber installed on the outside of the wheel.

[0004] The wheeled method of transportation is efficient, relatively fast, and provides a wide contact surface area with the ground, allowing for stable driving.

[0005] When wheels roll on the ground or road surface, you can see that the wheels are directly affected by the shape of the ground.

[0006] However, although general circular wheels are very efficient for driving on flat surfaces, they have difficulty climbing obstacles with steps such as bumps and stairs, or passing through various obstacles.

[0007] When people with disabilities use wheelchairs to climb obstacles with steps, such as steps or stairs, they find it difficult to climb them on their own. They need help from others or make tremendous efforts to move, which leads to inconveniences and restrictions in their daily lives.

[0008] In order to solve such problems, the purpose of the present invention is to provide an obstacle-climbing wheel using axis movement that can easily climb stairs or obstacles by improving the mechanical structure of the wheel.

[0009] The obstacle-climbing wheel using axis movement according to the features of the present invention to achieve the above purpose is,

[0010] An outer wheel that is attached to the inside of the tire and moves on the ground;

[0011] A first inner wheel that rotates along the inner surface of the outer wheel and is coupled to the inner side of the outer wheel so as not to be separated;

[0012] A rotary shaft having a fixed length and eccentrically coupled to one side of the first inner wheel, freely rotating within the first inner wheel, and having an axis position of the rotary shaft moving in front of the obstacle when colliding with the obstacle; and

[0013] It includes a unidirectional rotation part formed on one side of the first inner wheel to prevent the first inner wheel from rotating in one direction when the outer wheel stops rotating due to an obstacle.

[0014] The vehicle further includes an axle-moving bracket formed on the upper part of the tire, which is coupled to one side of the vehicle, and extends downward from both outer surfaces of the mounting portion, such that the outer wheel is rotatably positioned in the space therebetween.

[0015] By the above-described configuration, the present invention has the effect of reducing inconvenience in daily life by enabling the elderly, children, and the disabled to climb obstacles with steps such as steps and stairs by themselves.

[0016] The present invention has the effect of providing widespread distribution and convenience in life by allowing wheels to be applied to any field of transportation, such as wheelchairs, baby strollers, carts, and robots.

[0017] Fig. 1 is a drawing showing the external appearance of a wheel for overcoming obstacles using axis movement according to an embodiment of the present invention.

[0018] Figures 2 to 6 are drawings showing an exploded view of a wheel according to an embodiment of the present invention.

[0019] Figures 7 to 9 are drawings showing the configuration of an axial spring portion according to an embodiment of the present invention.

[0020] Fig. 10 is a drawing showing the configuration of a unidirectional rotating part according to an embodiment of the present invention.

[0021] Figures 11 and 12 are drawings showing the operation of a unidirectional rotating part according to an embodiment of the present invention.

[0022] Figures 13 to 16 are drawings showing the operation sequence of a wheel for overcoming an obstacle using axis movement according to an embodiment of the present invention.

[0023] The present invention is susceptible to various modifications and embodiments. Specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, but rather to encompass all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention. Throughout the description of each drawing, similar reference numerals have been used to designate similar components.

[0024] Terms such as first, second, A, and B may be used to describe various components, but these components should not be limited by these terms. These terms are used solely to distinguish one component from another. For example, without departing from the scope of the present invention, the first component could be referred to as the second component, and similarly, the second component could also be referred to as the first component. The term "and / or" includes any combination of multiple related listed items or any one of multiple related listed items.

[0025] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0026] The terminology used in this application is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, it should be understood that the terms “comprise” or “have” indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0027] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0028] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the attached drawings. In order to facilitate an overall understanding in describing the present invention, identical reference numerals are used for identical components in the drawings, and redundant descriptions of identical components are omitted.

[0029] Fig. 1 is a drawing showing the external appearance of a wheel for overcoming obstacles using axis movement according to an embodiment of the present invention, and Figs. 2 to 6 are drawings showing an exploded view of a wheel according to an embodiment of the present invention.

[0030] An obstacle-climbing wheel (100) using axis movement according to an embodiment of the present invention includes a tire (110), an outer wheel (120), a first inner wheel (130), an axis movement bracket (160), an axis spring part (200), and a unidirectional rotation part (300).

[0031] The wheel (100) includes a tire (110) and an outer wheel (120) that is coupled to the inside of the tire (110) so as not to come off.

[0032] The outer wheel (120) is manufactured as a hollow body made of a material such as stainless steel or a high-strength aluminum alloy in a circular ring shape, and is not limited thereto, but may be made of a metal material having excellent physical and mechanical properties such as durability and strength, and the cross-sectional shape of the hollow body is also generally circular.

[0033] The tire (110) is manufactured as a hollow body made of a material such as plastic, rubber, or synthetic resin in a circular ring shape, and is not limited thereto, but may be made of a synthetic resin material having excellent physical and mechanical properties such as durability and strength, and the cross-sectional shape of the hollow body is also generally circular.

[0034] The tire (110) is in contact with the ground and moves freely.

[0035] The tire (110) has a first wheel body (111) in the shape of a ring forming a first hollow portion (111a) on the inside, and one or more first rotation grooves (112) are formed along one side of the inner surface of the first wheel body (111).

[0036] The outer wheel (120) is coupled to the inner side of the tire (110) so as not to be separated, rotates integrally with the tire (110), and moves in contact with the ground.

[0037] The outer wheel (120) has a ring-shaped second wheel body (121) that forms a second hollow portion (121a) on the inside, and forms one or more second rotation grooves (122) along one side of the inner surface of the second wheel body (121), and forms one or more third rotation grooves (123) along one side of the outer surface.

[0038] The first inner wheel (130) is concentrically connected to the inner surface of the outer wheel (120) and includes a first-first inner wheel (140) and a first-second inner wheel (150) in the shape of a ring that are arranged facing each other.

[0039] The first inner wheel (130) can rotate in the opposite direction to the rotation direction of the outer wheel (120), or can rotate in the same direction.

[0040] The first inner wheel (130) is completed by integrally connecting the first-first inner wheel (140) and the first-second inner wheel (150) by one or more horizontal axes while being arranged opposite to each other.

[0041] The first-first inner wheel (140) includes a ring-shaped first-first wheel body (141) with a hollow portion (141a) formed on the inside, and a first-first protrusion (142) protruding from the first-first wheel body (141) in the direction of the opposing first-second inner wheel (150).

[0042] The first wheel body (141) forms a first coupling groove (143) in the upper center, a second coupling groove (144) in the lower left part, and a third coupling groove (145) in the lower right part.

[0043] The first-second inner wheel (150) includes a ring-shaped first-second wheel body (151) with a hollow portion (151a) formed on the inside, and a first-second protrusion (152) protruding from the first-second wheel body (151) in the direction of the first-first inner wheel (140) facing the first-second wheel body (151).

[0044] The first-second wheel body (151) forms a fourth coupling groove (153) in the upper center, a fifth coupling groove (154) in the lower left part, and a sixth coupling groove (155) in the lower right part.

[0045] When the first inner wheel (130) is fitted into the second rotation groove (122) of the second wheel body (121) and the first-second inner wheel (150) are joined with the first-first inner wheel (140), the first-first protrusion (142) of the first-first inner wheel (140) and the first-second protrusion (152) of the first-second inner wheel (150) come into contact.

[0046] The axis movement bracket (160) is positioned at a predetermined distance apart from the outer direction of the first-first inner wheel (140) and the first-second inner wheel (150), and is connected to the first-first inner wheel (140) and the first-second inner wheel (150) by a rotation axis (190) of a predetermined length, and the axis position of the rotation axis (190) can move forward when colliding with an obstacle.

[0047] The axis movement bracket (160) is a device that performs the function of allowing the wheel (100) to go over an obstacle by moving the axis position of the rotation axis (190). The first axis movement bracket (170) and the second axis movement bracket (180) are arranged opposite to each other and are integrally connected by one or more axes in the horizontal direction.

[0048] The axis-moving bracket (160), the first-first inner wheel (140), and the first-second inner wheel (150) are integrally connected by one or more axes in the horizontal direction.

[0049] The first axis-moving bracket (170) has a first bracket portion (171) in the shape of a ring with a first opening (172) of a certain diameter formed in the center thereof, a first column portion (173) in the shape of a straight line extending a certain length in the upper direction of the first bracket portion (171), and a first fixing portion (174) formed at the upper end of the first column portion (173).

[0050] The first bracket member (171) forms a first opening (172) in the center and a first rotation shaft insertion groove (175) on the upper portion of the first opening (172), and forms a first auxiliary shaft insertion groove (176) and a first fixed rod insertion groove (177) on the left and right sides of the first opening (172).

[0051] The first pillar (173) can be formed with a certain length and a certain angle so that it can be erected upwards in conjunction with the wheel (100) in the form of a panel.

[0052] The first fixing portion (174) protrudes from the upper inner surface of the first pillar portion (173) toward the second axis-moving bracket (180), and a semicircular groove is dug from one end.

[0053] The second axis-moving bracket (180) has a second bracket hole (181) in the shape of a ring with a second opening (182) of a constant diameter formed in the center thereof, a second column part (183) in the shape of a straight line extending a constant length in the upper direction of the second bracket part (181), and a second fixing part (184) formed at the upper end of the second column part (183).

[0054] The second bracket (181) is similar to a disk, and has a second opening (182) formed in the center, a second rotation axis insertion groove (185) formed on the upper portion of the second opening (182), a second auxiliary axis insertion groove (186) formed on the left and right sides of the second opening (182), and a second fixing rod insertion groove (187).

[0055] The second pillar (183) can be formed with a certain length and a certain angle so that it can be erected upwards in conjunction with the wheel (100) in the form of a panel.

[0056] The second fixing portion (184) protrudes from the upper inner surface of the second pillar portion (183) toward the first axis movement bracket (170), and a semicircular groove is dug from one end.

[0057] When the first axis movement bracket (170) and the second axis movement bracket (180) are coupled in opposite directions, the outer wheel (120) is positioned rotatably in the space between the first axis movement bracket (170) and the second axis movement bracket (180).

[0058] When the first axis movement bracket (170) and the second axis movement bracket (180) are coupled in a facing manner, the first mounting portion (174) and the second mounting portion (184) come into contact and merge into one, forming a circular groove.

[0059] The circular groove formed in this way is inserted and fixed to the lower part of a means of transportation (wheelchair, bicycle, etc.).

[0060] When the first axis-moving bracket (170) and the second axis-moving bracket (180) are coupled to face each other, the first bracket portion (171) and the second bracket portion (181) are formed at a predetermined distance apart from each other on both sides of the tire (110), and the first pillar portion (173) and the second pillar portion (183) extend a predetermined length beyond the tire (110) in the upper direction of the tire (110).

[0061] The axis moving bracket (160) can distribute the load by transmitting the load applied by the moving means to the outer wheel (120) and the first inner wheel (130).

[0062] The axis-moving bracket (160) is coupled with a longitudinal rotational axis (190) that horizontally penetrates the second rotational axis insertion groove (185) of the second bracket part (181) in the first rotational axis insertion groove (175) of the first bracket part (171), and is fixed on one side of the first axis-moving bracket (170) and the second axis-moving bracket (180).

[0063] The rotation axis (190) is eccentrically coupled to one side of the first inner wheel (130), freely rotates within the first inner wheel (130), and when colliding with an obstacle, the axis position of the rotation axis (190) can move in front of the obstacle.

[0064] To explain in more detail, the rotation shaft (190) is formed in a rod shape with a constant diameter and length and penetrates horizontally through the first rotation shaft insertion groove (175) of the first bracket member (171), the first coupling groove (143) formed in the upper center of the first-first wheel body (141), the fourth coupling groove (153) formed in the upper center of the first-second wheel body (151), and the second rotation shaft insertion groove (185) of the second bracket member (181).

[0065] The rotation axis (190) is located at the top of the 1-1 inner wheel (140) and the 1-2 inner wheel (150).

[0066] Accordingly, the rotation axis (190) functions to connect the first-first inner wheel (140), the first-second inner wheel (150), the first axis movement bracket (170), and the second axis movement bracket (180) to each other.

[0067] The rotation shaft (190) is coupled by penetrating one or more bearing members into the space between the first-first inner wheel (140) and the first-second inner wheel (150), and the bearing member is coupled between the first rotation shaft insertion groove (175) of the first bracket part (171) and the outer surface of the first-first inner wheel (140), the bearing member is coupled between the first rotation shaft insertion groove (175) of the first bracket part (171) and the outer surface of the first-first inner wheel (140), and the bearing member is coupled between the second rotation shaft insertion groove (185) of the second bracket part (181) and the outer surface of the first-second inner wheel (150).

[0068] The axis-moving bracket (160) is connected by a longitudinal auxiliary shaft (191) coupled to the first auxiliary shaft insertion groove (176) of the first bracket part (171) and passing through the hollow part (141a) of the first-first inner wheel (140) and the hollow part (151a) of the first-second inner wheel (150) and penetrating the second auxiliary shaft insertion groove (186) of the second bracket part (181) in the horizontal direction.

[0069] The axial movement bracket (160) is connected by a longitudinal fixing rod (192) coupled to the first fixing rod insertion groove (177) of the first bracket part (171) and passing through the hollow part (141a) of the first-first inner wheel (140) and the hollow part (151a) of the first-second inner wheel (150) and penetrating the second fixing rod insertion groove (187) of the second bracket part (181) in the horizontal direction.

[0070] The first inner wheel (140) and the first inner wheel (150) are connected horizontally with the first axis (131) extending in the longitudinal direction from the second coupling groove (145) of the first wheel body (141) to the fifth coupling groove (155) of the first-second wheel body (151) in a state where the second-first protrusion (143) of the first inner wheel (140) and the second-second protrusion (153) of the first-second inner wheel (150) are in contact with each other, and the second axis (132) extending in the longitudinal direction from the third coupling groove (146) of the first wheel body (141) to the sixth coupling groove (156) of the first-second wheel body (151) is connected horizontally.

[0071] The axle spring part (200) is connected on one side to the first inner wheel (140) and on the other side to one side of the axle movement bracket (160).

[0072]

[0073] *The axle spring part (200) is connected on one side to one side of the first inner wheel (130) and on the other side to one side of the axle movement bracket (160), so that a certain angle is maintained through tension between the first inner wheel (130) and the axle movement bracket (160). When the outer wheel (120) touches an obstacle, the built-in spring contracts, and when the obstacle is overcome, the spring expands to maintain a certain angle.

[0074] The axle spring part (200) is described as being connected to the first-first inner wheel (140) on one side, but is not limited thereto, and may be connected to the first-second inner wheel (150).

[0075] The shaft spring part (200) is a double torsion spring formed of a metal material, and includes a first torsion spring part (210), a second torsion spring part (220), a second inner wheel coupling body part (230), a bracket coupling body part (240), and a tension adjustment screw part (250).

[0076] The axle spring part (200) includes a second inner wheel coupling body part (230) having one side coupled to the first inner wheel (140), a bracket coupling body part (240) having one side coupled by penetrating a coupling rod (193), a central axis (232) that rotates when the other side of the second inner wheel coupling body part (230) and the other side of the bracket coupling body part (240) are coupled to each other, and a pair of torsion spring parts (210, 220) that are wound in a spiral shape around the central axis (232) and are coupled to one side of the second inner wheel coupling body part (230) and the other side of the bracket coupling body part (240).

[0077] The first torsion spring part (210) includes a first torsion part (211), a first leg part (212), and a second leg part (213).

[0078] The first torsion member (211) is wound in a spiral shape, and can maintain tension and provide elasticity to the first inner wheel (130) and the shaft moving bracket (160) by using the first leg member (212) extended from one end to a certain length and the second leg member (213) extended from the other end to a certain length.

[0079] The second torsion spring part (220) includes a second torsion part (221), a third leg part (222), and a fourth leg part (223).

[0080] The second torsion member (221) is wound in a spiral shape, and can maintain tension and provide elasticity to the first inner wheel (130) and the shaft moving bracket (160) by using the third leg member (222) extended from one end to a certain length and the fourth leg member (223) extended from the other end to a certain length.

[0081] The second inner wheel coupling body part (230) is formed by coupling a body part main body (231) having a roughly 'H' shape and a tension adjusting screw part (250) that adjusts the tension of the axis spring part (200) on the upper surface of the body part main body (231).

[0082] The body part (231) is joined by inserting the central axis (232) horizontally into the opening part of the end part.

[0083] The first bracket hole (171) of the first axis-moving bracket (170) forms at least one first coupling rod insertion groove (178) on the lower side, i.e., the lower side, of the first auxiliary shaft insertion groove (176) and the first fixed rod insertion groove (177).

[0084] The second bracket hole (181) of the axial movement bracket (160) forms at least one second coupling rod insertion groove (188) on the lower side, i.e., the lower side, of the second auxiliary shaft insertion groove (186) and the second fixed rod insertion groove (187).

[0085] The axial movement bracket (160) connects a longitudinal coupling rod (193) horizontally from the first coupling rod insertion groove (178) to the second coupling rod insertion groove (188). The connected coupling rod (193) is connected to the first bracket hole (171) and the second bracket hole (181) using a nut.

[0086] The second inner wheel coupling body part (230) and the bracket coupling body part (240) can repeatedly move away from each other and then closer to each other due to the elastic force of the first torsion spring part (210) and the second torsion spring part (220).

[0087] The shaft spring part (200) is a spiral spring (double torsion spring) that provides torque or rotational force and elastic force, and the second inner wheel coupling body part (230) and the bracket coupling body part (240) rotate around the central axis (232).

[0088] The bracket coupling body (240) includes a longitudinal cylindrical tube (241) with an empty interior, and a spring coupling portion (242) of a certain shape extending in a perpendicular direction from the cylindrical tube (241).

[0089] The cylindrical tube (241) is connected by a connecting rod (193) penetrating the inside so that the axial spring part (200) can be connected to the axial movement bracket (160).

[0090] The spring coupling part (242) comprises a flat plate part (243), a body part (246) in which both ends of the flat plate part (243) are bent downward to form a first side wall (244) and a second side wall (245), and a partition part (247) of a constant length and thickness is formed in the lower center of the body part (246).

[0091] The spring coupling portion (242) forms a first slide home (not shown) which is a space between the partition wall portion (247) and the first side wall (244), and forms a second slide home (not shown) which is a space between the partition wall portion (247) and the second side wall (245).

[0092] The extension portion (247a) extends from the bulkhead portion (247) to a certain length and forms a circular ring portion (247b) at its end.

[0093] The second inner wheel coupling body part (230) is coupled to the bracket coupling body part (240) on one side and coupled to the first-first inner wheel (140) on the other side.

[0094] Figures 7 to 9 are drawings showing the configuration of an axial spring portion according to an embodiment of the present invention.

[0095] The axial spring part (200) includes a first torsion part (211) that is wound in a spiral shape around a central axis (232) and coupled, a first leg part (212) that extends from one side of the first torsion part (211) is coupled to a second inner wheel coupling body part (230), and a second leg part (213) that extends from the other side of the first torsion part (211) is coupled to a bracket coupling body part (230), and a second torsion part (221) that is wound in a spiral shape around the central axis (232) and coupled, and a third leg part (222) that extends from one side of the second torsion part (221) is coupled to the second inner wheel coupling body part (230), and a fourth leg part (223) that extends from the other side of the second torsion part (221) is coupled to a bracket coupling body part (240). Includes a spring portion (220).

[0096] The tension adjustment screw part (250) includes a head part (251) of a certain shape and a bolt member (252) coupled to the lower part of the head part (251).

[0097] The second inner wheel coupling body part (230) is connected by inserting a central axis (232) into the space between the body part main body (231) in a roughly 'H' shape and one end of the body part main body (231), and connecting it vertically by penetrating through a flat area in the middle of the body part main body (231) by a bolt member (252) of a tension adjustment screw member (250).

[0098] The second inner wheel coupling body part (230) and the bracket coupling body part (240) are coupled to the central axis (232) by coupling the extension part (247a), the first torsion spring part (210), and the second torsion spring part (220).

[0099] In other words, the central axis (232) is connected to the ring portion (247b) of the extension portion (247a) by penetrating through it, and the first torsion portion (211) of the first torsion spring portion (210) and the second torsion portion (221) of the second torsion spring portion (220) are connected to each other by being wound in a spiral shape on both sides of the ring portion (247b).

[0100] The first torsion spring part (210) has a first longitudinal leg part (212) arranged on the lower surface of the body part main body (231), and a second leg part (213) is fitted into and connected to the first slide groove of the spring coupling part (242).

[0101] The second torsion spring part (220) is arranged such that the third leg part (222) in the longitudinal direction is placed on the lower surface of the body part main body (231), and the fourth leg part (223) is fitted into the second slide groove of the spring coupling part (242) and is coupled.

[0102] The first torsion spring part (210) and the second torsion spring part (220) are connected integrally with one end of the first leg part (212) and the other end of the third leg part (223) extending in an arc shape.

[0103] The tension adjusting screw part (250) has a head part (251) positioned on the upper part of the body part main body (231), and a bolt part (252) coupled to the head part (251) penetrates the body part main body (231) vertically, pierces the lower surface of the body part main body (231), and extends downward, and is inserted and coupled between the first leg part (212) and the third leg part (223).

[0104] When the user rotates the head portion (251) in one direction with his / her hand, the bolt member (252) descends downwards, lowering the first leg portion (212) and the third leg portion (223) together. As a result, the angle between the first leg portion (212) and the second leg portion (213), and the angle between the third leg portion (223) and the fourth leg portion (223) gradually decrease, thereby strengthening the torque or rotational force and tension of the shaft spring portion (200).

[0105] When the user rotates the head portion (251) in a different direction with his / her hand, the bolt member (252) rises downwards, simultaneously raising the first leg portion (212) and the third leg portion (223). As a result, the angle between the first leg portion (212) and the second leg portion (213), and the angle between the third leg portion (223) and the fourth leg portion (223) gradually increase, thereby weakening the torque, rotational force, or tension of the axial spring portion (200).

[0106] A fixed rod (192) of a certain length is coupled to the first fixed rod insertion groove (177) of the first axis-moving bracket (170), and penetrates the hollow portion (141a) of the first-first inner wheel (140) and the hollow portion (151a) of the first-second inner wheel (150) to be coupled to the second fixed rod insertion groove (187) of the second axis-moving bracket (180).

[0107] Fig. 10 is a drawing showing the configuration of a unidirectional rotation part according to an embodiment of the present invention, and Figs. 11 and 12 are drawings showing the operation of a unidirectional rotation part according to an embodiment of the present invention.

[0108] The one-way rotation part (300) performs a function of preventing the first inner wheel (130) from rotating clockwise when the outer wheel (120) is stopped from rotating due to an obstacle.

[0109] The unidirectional rotating part (300) includes a rack gear (310), a stopper body (320), a shaft (330), and a spring (340).

[0110] The rack gear (310) forms gear teeth and gear grooves in a concentric direction on the inner side of the outer wheel (120).

[0111] The unidirectional rotating part (300) includes a stopper body part (320) that forms an insertion groove into which a longitudinal axis (330) extending from the first-first inner wheel (140) is inserted.

[0112] The stopper body (320) includes a press part (332) that rotates toward the fixed rod based on the axis (330), and a catch part (323) that is smaller than the size of the press part (332) and rotates toward the rack gear.

[0113] In other words, the stopper body (320) has a shape similar to a pistol, and includes a press part (322) that is larger and heavier on one side of the shaft (330) and a catch part (323) that engages with a rack gear (310) on the other side.

[0114] To explain the shape by analogy to a pistol, the press part (322) may be the part of the pistol that the palm holds, and the catch part (323) may be the part corresponding to the muzzle of the pistol.

[0115] The stopper body (320) has a press portion (322) and a catch portion (323) that rotate in opposite directions based on the axis (330).

[0116] When the outer wheel (120) of the press unit (322) stops rotating due to an obstacle, the first axis movement bracket (170) and the second axis movement bracket (180) move forward, and accordingly, the fixed rod (192) also moves.

[0117] The hook (323) includes a hook body (324) extending from the press part (322) to a certain length, a hook part (325) protruding from one end of the hook body (324) in the direction of the rack gear (310), and a spring hook part (326) extending from the hook body (324) to a certain length in the opposite direction of the hook part (325).

[0118] A groove into which a spring (340) is inserted is formed on one side of the first protrusion (142) of the first inner wheel (140), and a spring hook (326) is inserted into and coupled to the spring (340).

[0119] As shown in Fig. 11, the press part (322) is formed in a square shape so that before the outer wheel (120) touches an obstacle, it is blocked by the fixing bar (192) and cannot move toward the fixing bar.

[0120] At this time, the one-way rotating part (300) is in a state where the hook part (325) is not connected to the rack gear (310).

[0121] When the outer wheel (120) stops rotating due to an obstacle, the press unit (322) moves toward the fixed rod based on the axis (330).

[0122] As illustrated in Fig. 12, the catch (323) moves toward the rack gear so that the hook (325) is inserted into the rack gear (310) and engages with the gear to prevent the first inner wheel (130) from rotating clockwise. At this time, the outer wheel (120) is not only blocked by the obstacle and cannot rotate, but the hook (325) engages with the rack gear (310), so it can rotate clockwise and cannot rotate counterclockwise.

[0123] Figures 13 to 16 are drawings showing the operation sequence of a wheel for overcoming an obstacle using axis movement according to an embodiment of the present invention.

[0124] Fig. 13 shows that before the wheel (100) touches the obstacle, the press part (322) is blocked by the fixed rod (192) and cannot move toward the fixed rod, so the one-way rotation part (300) is released.

[0125] The outer wheel (120) can move forward and backward and rotate freely.

[0126] The outer wheel (120) can maintain its angle by means of a rotation axis (190), a fixed rod (192), and an axis spring (200).

[0127] FIG. 14 shows that when the tire (110) and the outer wheel (120) collide with an obstacle and stop rotating, the axis positions of the first axis-moving bracket (170), the second axis-moving bracket (180), and the rotation axis (190) move in front of the obstacle, and accordingly, the fixed rod (192) also moves.

[0128] The one-way rotating part (300) moves the press part (322) toward the fixed rod based on the axis (330) by the elastic force of the spring (340), and the engaging part (323) moves toward the rack gear and engages with the rack gear (310) to prevent the first inner wheel (130) from rotating clockwise.

[0129] At this time, the wheel (100) rises above the obstacle as the axle spring (200) is pressed, and the axis position of the rotation axis (190) moves in front of the obstacle.

[0130] Figure 15 shows a state where the wheel (100) rises above an obstacle.

[0131] Fig. 16 shows that when the wheel (100) goes over an obstacle, the wheel (100) moves forward due to the spring restoring force of the axis spring (200).

[0132] The axial positions of the first axis-moving bracket (170), the second axis-moving bracket (180), and the rotation shaft (190) are restored to their original positions by the spring restoring force of the axis spring (200), and the fixed rod (192) presses the press part (322), and the engaging part (323) of the unidirectional rotation part (300) is separated from the rack gear (310), thereby releasing the function of the unidirectional rotation part (300). At this time, the outer wheel (120) is able to move forward and backward and rotate freely.

[0133] The obstacle-climbing wheel (100) using the axis movement of the present invention can be used as a replacement for existing wheels, and can easily climb over stairs or obstacles due to the improvement of the mechanical structure, and is excellent in economic efficiency due to its simple structure.

[0134] The wheel (100) of the present invention can manually overcome obstacles, but is not limited thereto, and can be applied to electric power by applying a motor.

[0135] An important feature of the wheel (100) of the present invention is that when the tire (110) and the outer wheel (120) collide with an obstacle and stop rotating, the axial positions of the first axis-moving bracket (170), the second axis-moving bracket (180), and the rotation shaft (190) move in front of the obstacle, and the function of the unidirectional rotation part (300) operates so that the engaging part (323) engages the rack gear (310) to prevent the first inner wheel (130) from rotating clockwise. This is because when the first inner wheel (130) rotates clockwise and descends, the axial position of the rotation shaft (190) descends, which hinders the vehicle from going over the obstacle.

[0136] The wheel (100) is pushed by a person when the wheel (100) is caught on an obstacle, and the axle spring (200) is pressed, so that the wheel (100) rises over the obstacle, and at the moment of going over the obstacle, the axle positions of the first axle movement bracket (170), the second axle movement bracket (180), and the rotation shaft (190) are restored to their original positions by the spring restoring force of the axle spring (200), so that the function of the one-way rotation part (300) is released, the outer wheel (120) can rotate freely, and the first inner wheel (130) can also rotate clockwise.

[0137] The operations according to the embodiments of this specification can be implemented as computer-readable programs or codes on a computer-readable recording medium. Computer-readable recording media include all types of recording devices that store data that can be read by a computer system. Furthermore, computer-readable recording media can be distributed across network-connected computer systems, allowing computer-readable programs or codes to be stored and executed in a distributed manner.

[0138] When the embodiment is implemented in software, the above-described technique can be implemented as a module (process, function, etc.) that performs the above-described function. The module can be stored in memory and executed by the processor. The memory can be internal or external to the processor and connected to the processor by various well-known means.

[0139] Additionally, the computer-readable recording medium may include hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, etc. The program instructions may include not only machine language codes produced by a compiler, but also high-level language codes that can be executed by a computer using an interpreter, etc.

[0140] While some aspects of the present invention have been described in the context of a device, they may also represent a description of a corresponding method, wherein a block or device corresponds to a method step or a feature of a method step. Similarly, aspects described in the context of a method may also be described as a corresponding block or item or a feature of a corresponding device. Some or all of the method steps may be performed by (or using) a hardware device, such as, for example, a microprocessor, a programmable computer, or an electronic circuit. In some embodiments, one or more of the most significant method steps may be performed by such a device.

[0141] In embodiments, a programmable logic device (e.g., a field programmable gate array) may be used to perform some or all of the functions of the methods described herein. In embodiments, the field programmable gate array may operate in conjunction with a microprocessor to perform one of the methods described herein. In general, the methods are preferably performed by some hardware device.

[0142] Although the present invention has been described above with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various modifications and changes may be made to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below.

[0143] [Explanation of symbols]

[0144] 100: Wheel 110: Tire

[0145] 111: First wheel body 111a: First hollow part

[0146] 112: First turning groove 120: Outer wheel

[0147] 121: Second wheel body 121a: Second hollow part

[0148] 122: Second rotation groove 123: Third rotation groove

[0149] 130: First inner wheel 131: First axle

[0150] 132: Second axle 140: First-first inner wheel

[0151] 141a: Hollow section 141: Wheel body No. 1-1

[0152] 142: 1st projection 143: 1st joining groove

[0153] 144: Second joining groove 145: Third joining groove

[0154] 150: 1st-2nd inner wheel 151: 1st-2nd wheel body

[0155] 152: 1st-2nd projection 153: 4th joining groove

[0156] 154: 5th joining groove 155: 6th joining groove

[0157] 160: Axis shift bracket 170: First axis shift bracket

[0158] 171: First bracket hole 172: First opening hole

[0159] 173: First pillar section 174: First anchor section

[0160] 175: First rotation axis insertion groove 176: First auxiliary axis insertion groove

[0161] 177: First fixing rod insertion groove 178: First joining rod insertion groove

[0162] 180: Second axis movement bracket 181: Second bracket hole

[0163] 182: Second opening 183: Second pillar

[0164] 184: Second fixing part 185: Second rotation shaft insertion groove

[0165] 186: Second auxiliary shaft insertion groove 187: Second fixed rod insertion groove

[0166] 188: Second joint insertion groove 190: Rotation shaft

[0167] 191: Auxiliary shaft 192: Fixed bar

[0168] 193: Coupling rod 200: Axial spring part

[0169] 210: First torsion spring section 211: First torsion section

[0170] 212: First bridge section 213: Second bridge section

[0171] 220: Second torsion spring section 221: Second torsion section

[0172] 222: Third bridge section 223: Fourth bridge section

[0173] 230: Second inner wheel joint body part 231: Body part main body

[0174] 232: Central axis 240: Bracket joint body part

[0175] 241: Cylinder 242: Spring joint

[0176] 243: Flat panel 244: First side wall

[0177] 245: Second side wall 246: Body

[0178] 247: Bulkhead 247a: Extension

[0179] 247b: Ring part 250: Tension adjustment screw part

[0180] 251: Head part 252: Bolt part

[0181] 300: One-way rotation part 310: Rack gear

[0182] 320: Stopper body 330: Axis

[0183] 340: Spring

Claims

1. An outer wheel that is attached to the inside of the tire and moves on the ground; A first inner wheel that rotates along the inner surface of the outer wheel and is coupled to the inner side of the outer wheel so as not to be separated; A rotary shaft having a fixed length and eccentrically coupled to one side of the first inner wheel, freely rotating within the first inner wheel, and having an axis position of the rotary shaft moving in front of the obstacle when colliding with the obstacle; and It includes a unidirectional rotation part formed on one side of the first inner wheel to prevent the first inner wheel from rotating in one direction when the outer wheel stops rotating due to an obstacle. The first inner wheel further includes a first inner wheel and a first inner wheel in the form of rings that are concentrically joined on the inner side of the first inner wheel and are arranged facing each other. An obstacle-climbing wheel using axis movement, further comprising a first axis movement bracket and a second axis movement bracket, which are positioned at a predetermined distance apart from the outer direction of the first inner wheel and the first inner wheel, respectively, and are connected to the first inner wheel and the first inner wheel by the rotation axis, and the axis position of the rotation axis moves in front of the obstacle when colliding with the obstacle.

2. In paragraph 1, An obstacle-climbing wheel using an axle movement, which further includes a mounting portion formed on the upper portion of the tire and coupled to one side of the means of transportation, and an axle movement bracket extending downward from both outer surfaces of the mounting portion so that the outer wheel is rotatably positioned in the space therebetween.

3. In paragraph 2, An obstacle-climbing wheel using axis movement, further comprising an axis spring part, one side of which is connected to one side of the first inner wheel and the other side of which is connected to one side of the axis-moving bracket, so as to maintain a certain angle through tension between the first inner wheel and the axis-moving bracket, and when the outer wheel contacts an obstacle, the spring contracts and when the obstacle is overcome, the spring expands to maintain a certain angle.

4. In paragraph 1, An obstacle-climbing wheel using axis movement, further comprising an axis spring part, one side of which is connected to one side of the first inner wheel, the other side of which is connected to one side of a connecting rod connecting the first axis-moving bracket and the second axis-moving bracket, so as to maintain a certain angle through tension between the first inner wheel and the axis-moving bracket, and when the outer wheel contacts an obstacle, the spring contracts and when the obstacle is overcome, the spring expands to maintain a certain angle.

5. In paragraph 1, The above rotation axis is an obstacle-climbing wheel that utilizes axis movement located at the top of the first inner wheel.

6. In paragraph 4, The above-mentioned axis spring part, A second inner wheel coupling body part having one side coupled to the first inner wheel; A bracket-joining body part that is joined by penetrating one side of the above-mentioned joint rod; A central axis on which the other side of the second inner wheel coupling body part and the other side of the bracket coupling body part are coupled and rotate; and An obstacle-climbing wheel utilizing axle movement, further comprising a pair of torsion spring parts wound in a spiral shape around the central axis, one side of which is joined to the second inner wheel joining body part, and the other side of which is joined to the bracket joining body part.

7. In paragraph 6, The above-mentioned axis spring part, A first torsion spring part having a first torsion part that is wound in a spiral shape around the central axis and coupled, a first leg part extending from one side of the first torsion part coupled to the second inner wheel coupling body part, and a second leg part extending from the other side of the first torsion part coupled to the bracket coupling body part; and An obstacle-climbing wheel using axis movement, further comprising a second torsion spring part, wherein a second torsion part is wound in a spiral shape around the central axis and coupled, a third leg part extending from one side of the second torsion part is coupled to the second inner wheel coupling body part, and a fourth leg part extending from the other side of the second torsion part is coupled to the bracket coupling body part.

8. In paragraph 6, The second inner wheel coupling body part is integrally connected by extending the ends of each leg part extending from each torsion spring part in an arc shape on the lower surface, An obstacle-climbing wheel utilizing shaft movement, comprising a head portion of a certain shape, a bolt member coupled to the lower portion of the head portion, which penetrates the second inner wheel coupling body portion upward and downward and is inserted and coupled between the leg portions, and further comprising a tension-adjusting screw portion for adjusting the tension of the shaft spring portion by moving the bolt member upward and downward according to the rotation of the head portion.

9. In paragraph 1, The above first axis movement bracket and the above second axis movement bracket, A ring-shaped bracket having an opening of a certain diameter formed in the center, a rotation shaft insertion groove formed in the upper portion of the opening, an auxiliary shaft insertion groove and a fixed rod insertion groove formed on the left and right sides of the opening, and a coupling rod insertion groove formed in the lower portion of the opening; and An obstacle-climbing wheel using an axis movement, each of which includes a straight column extending upward from the above bracket to a constant length.

10. In paragraph 9, A fixed rod of a certain length is coupled to the fixed rod insertion groove of the first axis movement bracket, and the fixed rod penetrates the hollow portion of the first-first inner wheel and the hollow portion of the first-second inner wheel and is coupled to the fixed rod insertion groove of the second axis movement bracket. Further comprising a rack gear forming gear teeth and gear grooves in a concentric direction on the inner side of the first inner wheel, An obstacle-climbing wheel using shaft movement, wherein the unidirectional rotating part is coupled to a longitudinal axis extending from the first inner wheel and rotates toward the fixed rod based on the axis, and includes a locking part smaller than the size of the press part and rotating toward the rack gear.

11. In paragraph 10, The above-mentioned hook portion is a wheel for overcoming obstacles using an axis movement in which a hook-shaped hook portion protrudes in the direction of the rack gear, and a spring is connected to one side of the first-first inner wheel on the opposite side of the hook portion.

12. In paragraph 11, The above press part is blocked by the fixed rod before the outer wheel touches the obstacle and cannot move toward the fixed rod. When the outer wheel stops rotating due to an obstacle, the first axis-moving bracket and the second axis-moving bracket move forward, and the fixed rod also moves accordingly. An obstacle-climbing wheel using an axis movement in which the above-mentioned unidirectional rotating part moves the press part toward the fixed rod by the elastic force of the above-mentioned spring, and the above-mentioned engaging part moves toward the rack gear to engage with the rack gear and prevent the above-mentioned first inner wheel from rotating clockwise.

13. In paragraph 1, Further comprising a rack gear forming gear teeth and gear grooves in a concentric direction on the inner side of the first inner wheel, The above unidirectional rotating part is a wheel for overcoming obstacles using an axis movement in which a hook-shaped hook protrudes in the direction of the rack gear, and when the outer wheel is stopped from rotating by an obstacle, the axis position of the rotation axis moves in front of the obstacle, the hook is inserted into the rack gear so that the gears engage, and accordingly, the first inner wheel cannot rotate in one direction, and the outer wheel rotates clockwise and cannot rotate counterclockwise.

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