Bicycle front wheel fixing device

Abstract

To provide a bicycle front wheel fixing device that prevents a front wheel of a bicycle from rotating on its own, stabilizes the bicycle, and prevents the bicycle from falling over, also that allows the bicycle to be parked safely regardless of the conditions or topography of the parking location, and that has a simple and compact structure, is applicable to most types of bicycles, and allows the front wheel to be fixed and released with a single touch.SOLUTION: An upper device 101 is secured to a handle shaft 2 of a bicycle 100 with a swivel band. A lower device 102 is secured to a head tube 6 with a swivel band. A slide shaft 3 is pushed down and inserted into holes 8, 9, and 10 of a housing 7 of the lower device 102 to be connected, and thus a front wheel 15 can be secured. To release the front wheel 15, a release button is pushed to release the slide shaft 3 from the hole into which the shaft is inserted. In addition, by providing one or more holes in the housing 7 of the lower device 102, the front wheel 15 can be secured not only forward but also diagonally left or right.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a bicycle front wheel fixing device that prevents the bicycle from rotating in an unexpected direction due to self-rotation when stopped or parked, making the bicycle unstable, and also prevents the bicycle from falling over. [Background technology]

[0002] The front wheels of commercially available bicycles are designed to rotate 190 degrees freely, both when moving and when stopped. When parked on a flat surface, or especially on an uphill or left-right slope, the front wheel may rotate in an unexpected direction, causing instability and, in some cases, causing the bicycle to rotate on its own and tip over. Furthermore, when the bicycle is lifted by hand to move or hung for display, the left-right rotation of the front wheel can be an obstacle.

[0003] To solve the above problems, a bicycle handle stopper device is disclosed in Patent Document 1 below, and a bicycle handle lock device is disclosed in Patent Document 2 below. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility model registration No. 3140016

[0005] [Patent Document 2] Patent Publication No. 2008-110740 Summary of the Invention [Problem to be solved by the invention]

[0006] In view of the problems inherent in the conventional handle stopper devices and handle lock devices described above, the present invention aims to provide a front wheel fixing device for bicycles that has a simple structure, can be manufactured inexpensively, and is highly compatible with any vehicle model.

[0007] The front wheels of commercially available bicycles are designed to rotate freely through 190 degrees, both when moving and when stopped. When parked on a flat surface, or especially on an uphill or left-right slope, the front wheel may rotate in an unexpected direction, causing instability and, in some cases, causing the bicycle to rotate on its own and tip over.

[0008] Also, in the case of bicycles with a luggage basket mounted in front of the handlebars, the weight of the basket causes the front wheel to rotate naturally, often causing the bicycle to tip over. Parking bicycles equipped with a single-leg stand is particularly dangerous as they are prone to tipping over. Furthermore, the rotation of the front wheel from side to side can be an obstacle when lifting a bicycle by hand or when hanging it for display.

[0009] The bicycle handle stopper device in Patent Document 1 is fixed to the bottom of a bracket for attaching a luggage basket, and the knob of the slide shaft incorporated in the handle stopper device body is manually raised and inserted into a notched hole, connecting and preventing rotation and fixing the handle, but because it is attached to the bottom of the bracket, it has the drawback of being difficult to operate. Also, to release it, the slide knob must be manually removed from the notched hole and returned to its original position, which is a drawback of cumbersome operation.

[0010] The bicycle handle stopper device of Patent Document 1 utilizes a notched hole in the bracket for attaching a luggage basket, and cannot be used on bicycles that do not have a notched hole in the bracket.

[0011] The bicycle handlebar locking device in Patent Document 2 is a device that has a mounting part that is fixed to the top of the bicycle's front fork so that it moves with the front fork, and a bifurcated stopper piece that is supported on the mounting part so that it can swing up and down, but the device is large and does not look very attractive.

[0012] Both the bicycle handle stopper device of Patent Document 1 and the bicycle handle lock device of Patent Document 2 can only fix the front wheel in one direction, forward, and cannot fix it in diagonal directions to the left or right.

[0013] The currently proposed bicycle front wheel fixing devices disclosed in Patent Documents 1 and 2 have problems in terms of structure and operability, making them difficult to popularize.

[0014] Some commercially available bicycles come standard with a device that can secure the front wheel, like an electrically assisted bicycle, but the reality is that most commercially available bicycles do not have a device to secure the front wheel.

[0015] Since bicycles currently on the market have different structures depending on the model, it would be difficult to provide the bicycle handle stopper device of Patent Document 1 for all models of bicycles. [Means for solving the problem]

[0016] To achieve the above object, the inventions described in claims 1 to 4 of the present invention fix the front wheel of a bicycle, thereby preventing the front wheel from rotating in an unexpected direction due to its own rotation and preventing the bicycle from falling over. The present invention is a bicycle front wheel fixing device that includes an upper device attached and fixed to the handlebar shaft of the bicycle, and a lower device attached to the lower head tube or top tube that is integrated with the handlebar shaft.

[0017] Claim 1 describes a bicycle front wheel fixing device comprising an upper device fixed to the handle shaft of a bicycle and a lower device fixed to the head tube or top tube of the bicycle below the handle shaft, wherein the upper device has a housing, a sliding shaft stored inside the housing and inserted into a hole in the lower device, and a release button that is pressed to release the connection and fixation of the sliding shaft, and the lower device is composed of a housing that stores the sliding shaft and has one or more connection holes.

[0018] The bicycle front wheel fixing device described in claim 1 is characterized in that the slide shaft stored in the housing of the upper device can be inserted into, connected to, and fixed to any hole in the lower device even when the handlebars of the bicycle are rotated left and right, by making the distance from the center of the handle shaft to the center of the slide shaft the same as the distance from the center of the hole in the lower device to the center of the handle shaft.

[0019] The bicycle front wheel fixing device described in claim 1 is characterized in that the upper device can fix the front wheel of the bicycle by pushing down the slide shaft and inserting it into the hole of the lower device to connect them, and the connection and fixation of the upper device and the lower device can be released by pressing the release button.

[0020] The bicycle front wheel fixing device described in claim 1 is characterized in that the housing of the lower device has three or more holes that can accommodate the slide shaft, so that the fixing direction of the front wheel of the bicycle can be fixed in directions other than forward, such as diagonally to the left or right. [Effects of the Invention]

[0021] This invention prevents the front wheel of a bicycle from rotating when stopped or parked, not only on flat ground but also when parking on slopes from front to back or left to right, thereby eliminating instability caused by the front wheel rotating and preventing falls. It also has the effect of maintaining balance when loading luggage in the luggage basket attached to the front of the handlebar support while parking, which is safe and also makes it easier to prevent the bicycle from falling and organize it when parked. Additionally, lifting and moving the bicycle can be done safely as long as the front wheel is fixed.

[0022] The present invention allows the front wheel of a bicycle to be fixed in an oblique direction to the left or right in addition to the forward direction, thereby further improving stability when parking the bicycle.

[0023] The present invention is compact and can be applied to most types of bicycles, and can prevent the front wheel of a bicycle from rotating by one touch, thereby eliminating instability caused by the front wheel rotating by itself and preventing a fall. [Brief explanation of the drawings]

[0024] [Figure 1] 1 is an overall view illustrating a state in which a bicycle front wheel fixing device according to the present invention is mounted on a bicycle. [Figure 2-1] 1 is a perspective view illustrating a state in which the front wheel of a bicycle front wheel fixing device of the present invention is not fixed. FIG. [Figure 2-2] 1 is an enlarged view illustrating the state in which the upper device of the bicycle front wheel fixing device of the present invention is fixed to the handle shaft. [Figure 2-3] 1 is an enlarged view illustrating the state in which the lower device of the bicycle front wheel fixing device of the present invention is fixed to the head tube. [Figure 3] 1 is a perspective view illustrating a state in which the front wheel of a bicycle front wheel fixing device of the present invention is fixed. FIG. [Figure 4] 1 is a plan view illustrating a state in which the front wheel of the bicycle front wheel fixing device of the present invention is fixed facing forward. [Figure 5] 1 is a plan view illustrating a state in which the front wheel of a bicycle front wheel fixing device of the present invention is fixed in a diagonal rightward direction. [Figure 6] 1 is a front view of a bicycle front wheel fixing device according to the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0025] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0026] As shown in Figure 1, bicycle 100 is composed of handlebars 1, handlebar shaft 2, frame 103, front wheel 15, rear wheel 104, etc., and front wheel 15 is linked to handlebars 1, so that the direction of front wheel 15 can be changed by rotating handlebars 1 left and right.

[0027] As shown in FIG. 1, the bicycle front wheel fixing device of the present invention comprises an upper device 101 fixed to the handle shaft 2 of a bicycle 100, and a lower device 102 fixed to the head tube 6 or top tube 12 below the handle shaft 2, wherein the upper device 101 has a housing 5, a sliding shaft 3 housed inside the housing 5 and inserted into holes 8, 9, and 10 of the lower device 102, and a release button 4 that is pressed to release the connection and fixation of the sliding shaft 3, and the lower device 102 comprises a housing 7 that houses the sliding shaft 3 and has connection holes 8, 9, and 10.

[0028] As shown in FIG. 1, the upper device 101 and the lower device 102 are attached to the handlebar shaft 2 and the head tube 6 or top tube 12 on the rider's side.

[0029] As shown in Figure 2-1, the upper device 101 can fix the front wheel 15 by pushing down the slide shaft 3 and inserting it into holes 8, 9, and 10 of the lower device 102 to connect them, and the connection and fixation between the upper device 101 and the lower device 102 can be released by pressing the release button 4.

[0030] As shown in Figure 2-1, the slide shaft 3 of the upper device 101 fixed to the handle shaft 2 protrudes above the hole in the housing 5 and is not inserted into the holes 8, 9, and 10 in the housing 7 of the lower device 102.

[0031] As shown in FIG. 2-2, the upper device 101 is fixed to the flexible band 11 with a screw 17 and secured to the handle shaft 2 with a screw 18.

[0032] As shown in FIG. 2-3, the lower device 102 is fixed to the flexible band 11 with a screw 19 and secured to the head tube 6 with a screw 20.

[0033] As shown in Figure 3, the slide shaft 3 housed in the housing 5 of the upper device 101 fixed to the handle shaft 3 is pushed down and inserted into the hole 9 of the housing 7 of the lower device 102, and the upper device 101 and the lower device 102 are connected and fixed.

[0034] As shown in Figure 3, by making the distance a from the center 14 of the handle shaft 2 to the center 16 of the slide shaft 3 the same as the distances b, c, and d from the center 14 of the handle shaft 2 to the centers of the holes 8, 9, and 10 in the housing 7 of the lower device 102, when the handle 1 is rotated left or right, the slide shaft 3 can be inserted into any of the holes 8, 9, and 10 in the housing 7, connecting the upper device 101 and the lower device 102 and fixing the front wheel 15.

[0035] As shown in FIG. 4, by pushing down the slide shaft 3 housed in the housing 5 of the upper device 101 and inserting it into the hole 9 in the housing 7 of the lower device 102, the upper device 101 and the lower device 102 are connected, and the front wheel 15 of the bicycle 100 is fixed facing forward.

[0036] 5, by pushing down the slide shaft 3 housed in the housing 5 of the upper device 101 and inserting it into the hole 8 in the housing 7 of the lower device 102, the upper device 101 and the lower device 102 are connected and the front wheel 15 of the bicycle is fixed in a diagonal right direction. Similarly, to fix it in a diagonal left direction, by inserting the slide shaft 3 housed in the housing 5 of the upper device 101 into the hole 10 in the housing 7 of the lower device 102, the upper device 101 and the lower device 102 are connected and the front wheel 15 is fixed in a diagonal left direction.

[0037] As shown in Figure 2-1, the method for releasing the front wheels 15 is to press the release button 4 built into the housing 5 of the upper device 101, which causes the slide shaft 3 inserted into and connected to the holes 8, 9, and 10 of the housing 7 of the lower device 102 to be pulled up to its original position, releasing the connection and releasing the front wheels 15 from their fixed position.

[0038] By providing three or more holes in the housing 7 of the lower device 102, the front wheel 15 can be fixed not only in the forward direction but also in diagonal directions to the left and right.

[0039] The gap distance e between the upper device 101 and the lower device 102 is set to a range of 2 mm to 10 mm to facilitate insertion and connection of the slide shaft 3.

[0040] The length g of the slide shaft 3 protruding above the housing 5 of the upper device 101 is the sum of the vertical length f of the hole in the housing 7 and the gap distance e between the upper device 101 and the lower device 102.

[0041] The length of the slide shaft 3 of the upper device 101 housed in the main body of the housing 5 is set to be the same as the vertical length h of the housing 5.

[0042] The vertical length f of the holes 8, 9, 10 of the housing 7 must be long enough to allow the slide shaft 3 to be connected when pressed down.

[0043] The slide shaft 3 of the upper device 101 is cylindrical and has a diameter of 5 mm or more to ensure the strength of the connection. The diameter j of the slide shaft 3 is set to a distance not exceeding the diameter i of the handle shaft 2.

[0044] The diameter k of the holes 8, 9, 10 in the housing 7 of the lower device 102 is set to a size that allows the slide shaft 3 to easily enter.

[0045] The bottoms of the holes 8, 9, 10 in the housing 7 of the lower device 102 are hollow to prevent clogging of the holes.

[0046] The bicycle front wheel fixing device of the present invention was devised based on commercially available latches, and is designed to be compatible with many types of bicycles on the market.

[0047] The bicycle front wheel fixing device of the present invention can be easily attached to the handle shaft 2 and the head tube 6, and can firmly fix the bicycle front wheel, so that the object can be fully achieved.

[0048] The bicycle front wheel fixing device of the present invention has been described based on an embodiment, but the present invention is not limited to the configuration described in the above embodiment, and the configuration can be changed as appropriate within the scope of the spirit of the present invention.

[0049] When installing the bicycle front wheel locking device of the present invention on existing bicycles, it is difficult to standardize the fastening configuration because the structure of bicycles varies depending on the model. Therefore, it is recommended that a bicycle front wheel locking device that corresponds to the model be installed as standard during the bicycle manufacturing process. [Explanation of symbols]

[0050] 1 handle 2 Handle shaft 3 Slide shaft 4 Cancel button 5. Cabinet 6 Head tube 7. Housing 8 Hole for inserting the slide shaft 9 Hole for inserting the slide shaft 10 Hole for inserting the slide shaft 11 Free-standing band 12 Top tube 13 Down tube 14 Center of handle shaft 15 front wheels 16 Center of slide shaft 17 screws 18 screws 19 screws 20 screws 100 Bicycles 101 Upper device 102 Lower device 103 frames 104 rear wheel a Distance from the center of the handle shaft to the center of the slide shaft b Distance from the center of the handle shaft to the center of the hole in the lower device c Distance from the center of the handle shaft to the center of the hole in the lower device d Distance from the center of the handle shaft to the center of the hole in the lower device e. Gap between upper and lower devices f Vertical length of the hole in the lower unit's housing g Vertical length of slide shaft h Vertical length of the housing i Handle shaft diameter j Diameter of slide shaft k hole diameter

Claims

1. 1. A bicycle front wheel fixing device comprising an upper device secured to a handle shaft of a bicycle, and a lower device secured to a head tube or top tube of the bicycle below the handle shaft, The upper device includes a housing and a slide shaft housed inside the housing and inserted into a hole in the lower device; A release button is provided to release the connection and fixation of the slide shaft, The lower device is configured as a housing that houses the slide shaft and has one or more connecting holes.

2. 2. A bicycle front wheel fixing device according to claim 1, wherein the sliding shaft housed in the housing of the upper device is such that the distance from the center of the handle shaft to the center of the sliding shaft is the same as the distance from the center of the hole in the lower device to the center of the handle shaft, so that the sliding shaft can be inserted into, connected to, and fixed to any hole in the lower device even when the handle of the bicycle is rotated left or right.

3. 2. A bicycle front wheel fixing device according to claim 1, wherein the upper device can fix the front wheel of the bicycle by pushing down the slide shaft and inserting it into the hole of the lower device to connect them, and the connection and fixation between the upper device and the lower device can be released by pressing the release button.

4. 2. The bicycle front wheel fixing device according to claim 1, wherein the housing of the lower device has three or more holes that can accommodate the slide shaft, thereby enabling the front wheel of the bicycle to be fixed in a direction other than forward, such as diagonally to the left or right.

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