Bicycle front wheel fixing device

Abstract

To provide a bicycle front wheel fixing device that prevents the front wheel of a bicycle from rotating on its own, stabilizes the bicycle, and prevents the bicycle from falling over. It also enables the bicycle to be parked safely regardless of the conditions or topography of the parking area. It 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 fixed to a handle shaft 2 of a bicycle 100 with a swivel band, and a lower device 102 is fixed to a head tube 6 with a swivel band, and a slide shaft 3 is pushed down to be inserted into holes 8, 9, 10 in a housing 7 of the lower device 102, and the front wheel 15 can be fixed by connecting them. The release method is to press the release button, which releases the slide shaft 3 from the hole into which it was inserted, and releases the fixation of the front wheel 15. Also, by having one or more holes in the housing 7 of the lower device 102, the front wheel 15 can be fixed not only in a forward direction, but also diagonally to the left or right.

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, but when the bicycle is parked on a flat surface, or especially when the surface is on an uphill or left-right slope, the front wheel may rotate in an unexpected direction, making the bicycle unstable, and in some cases, the bicycle may rotate on its own and fall over. Furthermore, when the bicycle is lifted by hand to move or hung for display, the left-right rotation of the front wheel may cause an obstacle.

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

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

[0005] [Patent Document 2] Patent Publication 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 bicycle front wheel fixing device that has a simple structure, can be manufactured inexpensively, and is highly compatible with all vehicle types without being limited to those to which it can be applied.

[0007] The front wheels of commercially available bicycles are designed to be able to rotate freely 190 degrees both when moving and when stopped. When the bicycle is parked on a flat surface, or especially when the surface is inclined upwards or to the left or right, the front wheel may rotate in an unexpected direction, making the bicycle unstable and in some cases may even rotate on its own and cause the bicycle to fall over.

[0008] In addition, in the case of bicycles with a luggage basket mounted in front of the handlebars, the weight of the luggage placed in the basket causes the front wheel to rotate naturally, and the bicycle often falls over. Bicycles equipped with a single-leg stand are particularly prone to falling over and are therefore dangerous. Furthermore, when the bicycle is lifted by hand to move or hung for display, the left and right rotation of the front wheel can be an obstacle.

[0009] The bicycle handle stopper device in Patent Document 1 is fixed to the bottom of a bracket for mounting a luggage basket, and the knob of the slide shaft built into the handle stopper device body is manually raised and inserted into a notched hole, which connects and prevents rotation and fixes the handle, but since it is attached to the bottom of the bracket, it has the drawback of being difficult to operate.In addition, when releasing it, the slide knob must be manually removed from the notched hole and returned to its original position, which has the drawback of being cumbersome to operate.

[0010] The bicycle handle stopper device in Patent Document 1 utilizes a cutout hole in a bracket for attaching a luggage basket, and cannot be used on bicycles that do not have a cutout 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 upper part of the bicycle's front fork so as to move with the front fork, and a two-pronged 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] In both the bicycle handle stopper device of Patent Document 1 and the bicycle handle lock device of Patent Document 2, the front wheel can only be fixed in one direction, that is, forward, and cannot be fixed 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 lock the front wheel, like electric assist bicycles, but the reality is that most commercially available bicycles do not have a device to lock 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] In order to achieve the above object, the inventions described in claims 1 to 4 of the present invention prevent the front wheel of a bicycle from rotating in an unexpected direction due to its own rotation and from becoming unstable, and also prevent the bicycle from falling over. The present invention is a bicycle front wheel fixing device that includes an upper device fixedly attached to the handle shaft of a bicycle, and a lower device that is attached to the lower head tube or top tube that is integrated with the handle shaft.

[0017] Claim 1 is 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 connecting 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, connected, and fixed into 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 a hole in 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 in which the slide shaft can be accommodated, thereby allowing the fixing direction of the front wheel of the bicycle to be fixed in a diagonal direction to the left or right other than the forward direction. Effect of the Invention

[0021] The present 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 when parking, which is safe and makes it easy to prevent falls and organize the luggage when parked. In addition, if the front wheel is fixed, it can be safely carried out when lifting the bicycle.

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

[0023] The present invention is compact and can be applied to almost any type of bicycle, and can prevent the front wheel of a bicycle from rotating on its own with a single touch, thereby eliminating instability caused by the front wheel rotating on its own and preventing a fall. [Brief description 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 the bicycle front wheel fixing device of the present invention is not fixed. FIG. [Figure 2-2] 4 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. FIG. [Figure 2-3] 4 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. FIG. [Diagram 3] 1 is a perspective view illustrating a state in which the front wheel is fixed to the bicycle front wheel fixing device of the present invention. FIG. [Figure 4] 1 is a plan view illustrating a state in which the bicycle front wheel fixing device of the present invention is fixed so that the front wheel faces forward. [Diagram 5] 1 is a plan view illustrating a state in which the bicycle front wheel fixing device of the present invention fixes the front wheel in an obliquely 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 PREFERRED EMBODIMENTS

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

[0026] As shown in FIG. 1, bicycle 100 is composed of handlebars 1, handle 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 a handle shaft 2 of a bicycle 100, and a lower device 102 fixed to a head tube 6 or top tube 12 below the handle shaft 2, the upper device 101 having a housing 5, a slide 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 which is pressed to release the connection and fixation of the slide shaft 3, and the lower device 102 comprises a housing 7 which houses the slide shaft 3 and has connecting holes 8, 9 and 10.

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

[0029] As shown in FIG. 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 FIG. 2-1, the slide shaft 3 of the upper device 101 fixed to the handle shaft 2 protrudes from the upper part of 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 swivel band 11 with a screw 19 and secured to the head tube 6 with a screw 20.

[0033] As shown in FIG. 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 FIG. 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, d from the center 14 of the handle shaft 2 to the centers of the holes 8, 9, 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, 10 in the housing 7, and the upper device 101 and the lower device 102 can be connected to fix the front wheel 15.

[0035] As shown in FIG. 4, the slide shaft 3 housed in the housing 5 of the upper device 101 is pushed down and inserted into the hole 9 of the housing 7 of the lower device 102, whereby 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, the slide shaft 3 housed in the housing 5 of the upper device 101 is pushed down and inserted into the hole 8 of the housing 7 of the lower device 102, whereby the upper device 101 and the lower device 102 are connected and the front wheel 15 of the bicycle is fixed in an oblique rightward direction. Similarly, when fixing it in an oblique leftward direction, the slide shaft 3 housed in the housing 5 of the upper device 101 is inserted into the hole 10 of the housing 7 of the lower device 102, whereby the upper device 101 and the lower device 102 are connected and the front wheel 15 is fixed in an oblique leftward direction.

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

[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 within a range of 2 mm to 10 mm in order 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 that is accommodated within 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 in the housing 7 must be such that the slide shaft 3 that is pushed down can be connected thereto.

[0043] The slide shaft 3 of the upper device 101 is cylindrical in shape 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 vehicles 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 fixing device of the present invention on existing bicycles, it is considered difficult to standardize the fixing shape because the structure of bicycles varies depending on the model. Therefore, it is recommended that the bicycle front wheel fixing device corresponding to the model be standardly equipped during the bicycle manufacturing process. [Explanation of symbols]

[0050] 1 Handle 2 Handle shaft 3 Slide shaft 4 Release button 5. Cabinet 6 Head tube 7. Cabinet 8 Hole for inserting the slide shaft 9 Hole for inserting the slide shaft 10 Hole for inserting the slide shaft 11 Adjustable Band 12 Top tube 13 Down tube 14 Center of handle shaft 15 Front wheel 16 Center of slide shaft 17 Screws 18 Screws 19 Screws 20 Screws 100 Bicycles 101 Upper device 102 Lower device 103 Frame 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 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. 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 fixed to a handle shaft, a slide shaft that is housed inside a housing fixed to the handle shaft and that can be inserted into a hole in the lower device and that can move up and down; A release button is fixed to a housing fixed to the handle shaft, and the release button is pressed to release the connection and fixation of the single slide shaft that moves up and down. said lower device is composed of a housing that houses the single sliding shaft that can move up and down and has three or more connecting holes, and the lower tip of said single sliding shaft that can move up and down is entirely housed inside the fixed housing except when the front wheel of the bicycle is fixed, and when the front wheel is fixed, the lower tip of the sliding shaft that can move up and down is pushed down so that the lower tip of the sliding shaft that is housed inside the housing is connected and fixed to any of the holes of said lower device.

2. 2. A bicycle front wheel fixing device as described in claim 1, wherein the single vertically movable slide shaft housed in a housing fixed to the handle shaft of the upper device is capable of being inserted into, connected to and fixed to any of the three holes of the lower device even when the handle of the bicycle is rotated left or right, by making the distance from the center of the handle shaft to the center of the single vertically movable slide shaft the same as the distance from the center of the handle shaft to the center of the single vertically movable slide shaft and the distance from the center of each of the three holes of the lower device to the center of the handle shaft.

3. 2. A bicycle front wheel fixing device as described in claim 1, characterized in that the upper device can fix the front wheel of the bicycle by pressing down the single sliding shaft that moves up and down and inserting it into any of three holes in the lower device to connect them, and the connection and fixation of the upper device and the lower device can be released by pressing a release button fixed to the housing.

4. 2. A bicycle front wheel fixing device as described in claim 1, wherein the housing of the lower device has three or more holes capable of accommodating a single sliding shaft that can move up and down, thereby enabling the fixing direction of the front wheel of the bicycle to be fixed in a diagonal direction to the left or right other than the forward direction.

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