Bicycle

Abstract

The utility model provides a bicycle which can be safely used according to the original shape under the condition that a front wheel brake is not adjusted even if the bicycle is directly delivered to a user in a folded and shrunk packaging state, and can be easily and safely carried to a suburban park through the bicycle. And it is ensured that the bicycles in the indoor storage place can be better stored. The bicycle (1) is provided with left and right handlebar handles (2) which are provided with brake pull rods (3) and can be bent backwards. The side face of the front wheel 4 abuts against the frame lower tube 5 in the state that the handlebar is rotated by 180 degrees approximately. And a band brake assembly 8 disposed between the front fork 6 and the hub 7 of the front wheel 4. The front wheel brake is a belt brake, so that even if the bicycle is directly delivered to a user, the bicycle can be safely started and used according to the original shape without adjusting the left brake shoe and the right brake shoe like a caliper type brake.

Description

Technical Field

[0001] This utility model relates to a bicycle that can maintain the basic structure of a typical children's bicycle for safe driving by young children, while being miniaturized for storage and transport, and can be easily and quickly restored when in use. Background Technology

[0002] In the past, various types of bicycles have been offered as folding bicycles that can be miniaturized and transported. For example, a bicycle described in patent literature is a folding bicycle that can be folded down by disassembling the front half of the frame into upper and lower sections, bending them separately, and using the horizontal connecting part as the center of the bend so that the front and rear wheels overlap, thereby reducing the size of the bicycle after bending.

[0003] Bicycles, including those described in the aforementioned patent documents, have historically focused on miniaturization in their folding design. This has resulted in structural instability, particularly for young children unfamiliar with riding. Furthermore, bicycles are typically packaged and shipped in miniaturized sizes. The front brake of such bicycles is a caliper brake or V-brake, where a pair of brake shoes clamp evenly into the rim structure from both sides. During transport, external impacts or unintentional disruption of the brake cable can sometimes compromise the equivalence of the brake shoes. Therefore, the brakes need to be readjusted before use. Since this adjustment is difficult for users, it is generally performed at a professional retailer after unpacking the bicycle before delivery to the customer.

[0004] Therefore, one of the objectives of this invention is to provide a bicycle that can be used safely without professional adjustment of the front wheel brake, even when it is delivered to the user directly in a package through online sales.

[0005] In recent years, due to the scarcity of safe places for children to practice cycling in cities, most people seek out locations such as suburban parks. Therefore, there is a need for bicycles that can be easily loaded and unloaded into light vehicles with small cargo boxes, and that allow young children to play safely. Furthermore, in apartment buildings, children's bicycles are often stored in their own porches, entryways, hallways, balconies, etc., where the handlebars protrude into the traffic flow, obstructing residents' passage.

[0006] Therefore, another objective of this invention is to provide a bicycle with a structure different from conventional folding bicycles, which can be easily and compactly transported, bundled, and stored, but whose basic structure is not significantly different from that of a children's bicycle. Utility Model Content

[0007] The invention is described below with reference to the reference numerals in the accompanying drawings, but the invention is not limited thereto.

[0008] To address the aforementioned issues, the bicycle of this invention features a band brake assembly 8 between the front fork 6 and the hub 7 of the front wheel 4. The band brake assembly 8 is connected to the brake lever 3 via a brake cable 9.

[0009] The aforementioned band brake assembly is: having a support cover, the cylindrical portion of which can be rotatably received by a brake drum fixed on the aforementioned front wheel hub and supports a brake pad, and the extension plate portion extending radially from the aforementioned cylindrical portion and fixed upward on the aforementioned front fork;

[0010] It has a metal wire stopper, which is fixed to the upper end of the aforementioned extension plate to lock the outer wire of the brake line extending from the aforementioned brake lever;

[0011] It has a rocker arm pivotally supported on the aforementioned extension plate, one arm of which is connected to the aforementioned brake pad, and the other arm protruding upward from the aforementioned extension plate, with an inner lead extending from the aforementioned metal wire stopper connected at its end.

[0012] It has left and right handlebars, in which brake levers are installed and can be bent backward;

[0013] After the aforementioned handlebars are bent, with the handlebars rotated approximately 180°, the side of the front wheel will abut against the downtube of the frame.

[0014] The upper part of the aforementioned band brake assembly has a brake cover that can be detachably fitted with an upper protrusion from the aforementioned wire stop to the aforementioned rocker arm, and covers the inner space of the aforementioned inner lead extending from the wire stop to the rocker arm.

[0015] According to this invention, since the front wheel brake is a band brake, even bicycles delivered directly to users do not require adjustment of the left and right brake shoes as is the case with caliper brakes, allowing for safe and direct starting and use. Attached Figure Description

[0016] Figure 1 This is a side view illustration of the bicycle of this invention.

[0017] Figure 2 yes Figure 1 Side view of the bicycle in its stowed-away state.

[0018] Figure 3 yes Figure 1 A partial sectional view of the handlebars of a bicycle in use, (A) is a view from the direction of the bent pivot, and (B) is a view from the direction orthogonal to the bent pivot.

[0019] Figure 4 yes Figure 1 A partial sectional view of the bending process of a bicycle handlebar. (A) is a view from the direction of the bending pivot, and (B) is a view from the direction orthogonal to the bending pivot.

[0020] Figure 5 yes Figure 1 The bicycle belt brake component is shown in a perspective view with a portion omitted. (A) and (B) are views from opposite left and right directions, respectively.

[0021] Figure 6 yes Figure 1 The bicycle's band brake assembly with the brake cover removed is shown in a three-dimensional view, with some parts omitted. (A) represents one side view, and (B) represents the opposite side view.

[0022] Figure 7 yes Figure 1 A perspective view of a bicycle's band brake component, partially omitted, showing the state with the brake cover separated.

[0023] in,

[0024] 1: Bicycle

[0025] 2: Handlebars

[0026] 3: Brake lever

[0027] 4: Front wheels

[0028] 5: Downtube

[0029] 6: Front fork

[0030] 7: Front wheel hub

[0031] 8: Belt brake assembly

[0032] 9: Brake line

[0033] 10: Brake cover

[0034] 11: Handlebar stem

[0035] 21: Base

[0036] 21a: Curved section

[0037] 22: Bending section

[0038] 22a: Colic Eye

[0039] 22b: Threaded section

[0040] 23: Pivot

[0041] 24: Handlebar grips

[0042] 25: Locking components

[0043] 25b: Spring-supported stepped section

[0044] 25c: Internal spring

[0045] 61: Welding sheet

[0046] 62: Bolt

[0047] 81: Support cover

[0048] 81a: Cylindrical part

[0049] 81b: Extension plate section

[0050] 82: Brake pads

[0051] 83: Metal wire clips

[0052] 84: Joystick

[0053] 85: Shaft bolt

[0054] 91: External Line Section

[0055] 92: Inner lead section Detailed Implementation

[0056] The embodiments of this utility model are described with reference to the accompanying drawings.

[0057] exist Figure 1 In the bicycle 1, there are left and right handlebars 2 equipped with brake levers 3 and capable of bending backward. For example... Figure 2 As shown, when the handlebar 2 is bent backward, rotating the handlebar approximately 180° results in the front wheel 4's side contacting the frame downtube 5. By bending the front wheel 4 backward, the longitudinal length of the bicycle can be shortened, thereby reducing the packaging size for online sales.

[0058] The band brake assembly 8 is fixedly mounted between the front fork 6 and the front wheel hub 7 of the front wheel 4. The band brake assembly 8 is connected to the brake lever 3 via the brake cable 9.

[0059] like Figure 3 , 4 As shown, the handlebar handle 2 has a base 21 fixed to the handlebar stem 11 and a bendable portion 22 pivotally connected to its front end. The base 21 has a bend portion 21a on the front end side. The bend portion 21a is closed at the front and has an opening at the rear.

[0060] The bent portion 22 has a hinge portion 22a at its base end, and can only be bent backward via a pivot 23 on the pivot support of the crank portion 21a. A brake lever 3 is fixed to the middle part of the bent portion 22, and a handle sleeve 24 is fixed to the front end. A threaded portion 22b is formed around the middle outer periphery of the bent portion 22.

[0061] A cylindrical locking member 25, located on the outer circumference between the base 21 and the bent portion 22, is axially movable outward between a locked position and an unlocked position. The locking member 25 includes a threaded portion 25a on the inner circumference of its front end on the side of the bent portion 22, and a spring-supported stepped portion 25b on the inner circumference of its end on the side of the base, with an internal spring 25c inserted between them. Figure 3 As shown, the locking member 25 is locked in the locked position with the threaded portions 22b and 25a engaged, and the base end side abuts against the step of the crank portion 21a. Additionally, as... Figure 4 As shown, when the locking member 25 is released from the threaded portion 22b, 25a towards the bending portion 22, it can move axially to compress the internal spring 25c to the unlocked position where the eyelet 22a is exposed. When the locking member 25 is in the unlocked position, the crank portion 21a and the eyelet 22a are exposed, allowing the bending portion 22 to be bent. When the threaded portion 22b and 25a are only disengaged, the crank portion 21a and the eyelet 22a are not exposed, and bending is not possible in this state.

[0062] Existing bendable handlebars present time-consuming difficulties in assembly and angle adjustment, but with the above structure, the handlebars are easy to assemble and do not require angle adjustment.

[0063] like Figure 6 As shown, the band brake assembly 8 is assembled in the support cover 81 and includes a brake pad 82, a metal wire catch 83, and a rocker arm 84.

[0064] The support cover 81 has: a cylindrical portion 81a that rotatably receives the brake drum fixed to the front wheel hub 7 of the front wheel 4 and supports the brake pad 82; and an extension plate portion 81b that extends radially upward and is integrally fixed to the welded plate 61 of the front fork 6 with the metal wire catch 83 by bolts 62.

[0065] The metal wire locking member 83 is fixed to the upper end of the extension plate portion 81b, locking the outer wire portion 91 of the brake line 9 extending from the brake lever 3.

[0066] The rocker arm 84 is pivotally supported on the extension plate portion 81b by the shaft bolt 85. One rocker arm 84a of the rocker arm 84 is connected to the brake pad 82, and the other rocker arm 84b protrudes upward from the extension plate portion 81b, with its end connected to the inner lead portion 92 extending from the metal wire catch 83.

[0067] As shown in Figure 5, the brake cover 10 can be freely detached, installed, and fitted onto the upper part of the band brake assembly 8, so that the metal wire catch 83 protrudes above the rocker arm 84 and covers the inner lead wire 92 within the internal space 10a. Figure 7 )middle.

[0068] The brake cover 10 covers the drive section exposed upwards from the support cover 81, serving to prevent injury from finger insertion and also improving the appearance. In the case of a rear wheel band brake, since the movable part faces downwards and is covered by other mechanisms, the chance of finger insertion is very small. However, in this embodiment, since it is mounted on a front fork 6 without surrounding cover and the movable part protrudes forward and upward at an angle, it is necessary to install the brake cover 10 to cover it.

[0069] When storing the bicycle 1 in a box or loading it into a car, the handlebars 2 are bent and rotated approximately 180°, causing one side of the front wheel 4 to rest against the downtube 5 of the frame, thus reducing its size. In this position, the bicycle 1 can be stably stored in a corrugated cardboard box or loaded into a car. Because the front wheel 4 is positioned rearward, shortening the front-rear length of the bicycle, the packaging size for mail order delivery can be kept within the receiving size limits of transport operators (e.g., 200 cm on three sides). Furthermore, since the front brake is a band brake, even when the bicycle 1 is delivered directly from the seller to the user, there is no need to adjust the left and right brake shoes as with caliper brakes; it can be started and used safely simply by restoring the handlebars 2.

Claims

1. A bicycle characterized by: It has a band brake assembly that is positioned between the front fork and the hub of the front wheel and is connected to the brake lever via a brake cable; The aforementioned band brake assembly is: having a support cover, the cylindrical portion of which can be rotatably received by a brake drum fixed on the aforementioned front wheel hub and supports a brake pad, and the extension plate portion extending radially from the aforementioned cylindrical portion and fixed upward on the aforementioned front fork; It has a metal wire stopper, which is fixed to the upper end of the aforementioned extension plate to lock the outer wire of the brake line extending from the aforementioned brake lever; It has a rocker arm pivotally supported on the aforementioned extension plate, one arm of which is connected to the aforementioned brake pad, and the other arm protruding upward from the aforementioned extension plate, with an inner lead extending from the aforementioned metal wire stopper connected at its end.

2. The bicycle as described in claim 1, characterized in that: It has left and right handlebars, in which brake levers are installed and can be bent backward; After the aforementioned handlebars are bent, with the handlebars rotated approximately 180°, the side of the front wheel will abut against the downtube of the frame.

3. The bicycle as described in claim 1, characterized in that: The upper part of the aforementioned band brake assembly has an upper protrusion that can be easily fitted from the aforementioned metal wire stopper to the aforementioned rocker arm, and a brake cover that covers the inner space of the aforementioned inner lead extending from the metal wire stopper to the rocker arm.

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