Roll-up bicycle cover
The spring-powered roll-up bicycle cover addresses storage and portability issues by wiping water droplets and providing three-point support, ensuring effective protection and stability.
Patent Information
- Application Number
- JP2025001728U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-05-29
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2035-05-29
AI Technical Summary
Conventional bicycle covers face issues with storage and portability, particularly when wet, and fail to maintain the bicycle's position, leading to potential accidents.
A spring-powered roll-up bicycle cover with a wiping mechanism to remove water droplets and a three-point support system to stabilize the bicycle, using a waterproof cloth that attaches between the bicycle basket and handlebar post.
The cover effectively reduces water adhesion, maintains the bicycle's position, and minimizes storage space while preserving the original design, enhancing usability and safety.
Smart Images

Figure 0003252730000001_ABST
Abstract
Description
[Technical Field]
[0001] This invention relates to a roll-up bicycle cover that protects a bicycle from sunlight, rain, etc. with a waterproof cloth that can be easily deployed without the need to carry it, and that can maintain the bicycle's position when parked by supporting it at three points: the left and right handlebars, the rear carrier, or the tip of the mudguard. [Background technology]
[0002] Conventional bicycle covers mainly cover the entire bicycle body and provide overall protection.
[0003] However, as shown in Patent Documents 1 and 2, there have been some ideas to improve portability and storability by using blind types or by attaching a winding mechanism that uses a spiral spring. [Prior art documents] [Patent documents]
[0004] [Patent Document 1] Registered Utility Model No. 3138998 Publication [Patent Document 2] Japanese Utility Model Application Publication No. 04-039981 Summary of the Invention [Problem to be solved by the invention]
[0005] Conventional bicycle covers are mainly those that cover the entire bicycle, and various designs have been developed as shown in Patent Document 1 and Patent Document 2, but both have issues with storage and portability, and do not provide any measures to prevent the covers from being rolled up when wet.
[0006] The main focus of Patent Document 1 is that it is a blind type, but if a waterproof cloth that is wet with rainwater is rolled up as is, water droplets will adhere not only to the surface that receives the rainwater but also to the back side of the bicycle, and if it is used multiple times in rainy weather, the bicycle will get wet from the water droplets transferred to the back side.
[0007] Regarding Patent Document 2, it is easy to imagine that if the tape is rolled up while wet, water droplets will adhere to the back side, making it unsuitable for repeated use in rainy weather.
[0008] Furthermore, both Patent Document 1 and Patent Document 2 have considerable problems with the installation of the storage section and the size of the storage area.
[0009] In Patent Document 1, the mechanism of an existing blind is attached to the front of the bicycle basket with bolts, but since it is attached in a state where it protrudes from the front of the bicycle, it is prone to problems such as damaging the original design.
[0010] Regarding Patent Document 2, because the bicycle basket is designed to cover the entire bicycle from the handlebars, it needs to be folded when storing, which is time-consuming and results in an increase in the thickness of the fabric to be stored. Also, when considering the thickness of the rubber attachment and stitching, it is easy to imagine that the box that serves as the storage area will inevitably be large.
[0011] Furthermore, conventional bicycle covers, such as those in Patent Documents 1 and 2, are designed to only cover the bicycle and are not intended to maintain its position. As a result, the movement of the movable parts at the front of the bicycle can cause it to lose its position, which can lead to unintended accidents when the bicycle is parked. [Means for solving the problem]
[0012] This device incorporates a structure that removes water droplets that have adhered to the waterproof cloth within the main body of the winding part, which is powered by the restoring force of a spring such as a spiral spring, so that both sides of the waterproof cloth are wiped both when the device is stored and when it is deployed.
[0013] The installation location is between the bicycle basket and the handlebar post or at the rear of the bicycle basket, and the width of the waterproof cloth is kept to a minimum.
[0014] Furthermore, in order to prevent the waterproof cloth from shifting due to the curved structure of the handlebars, and to maintain the bicycle's posture using the waterproof cloth, devices for fixing the waterproof cloth are attached to the left and right sides of the handlebars. [Effects of the Invention]
[0015] The size of the winding part itself can be reduced by incorporating a spring powered by the restoring force of a power spring or the like into the winding shaft and by minimizing the length and width of the waterproof cloth that protects the bicycle.
[0016] In addition, by providing a mechanism for wiping the waterproof cloth inside the winding section, it is possible to effectively reduce rainwater adhering to the surface and water droplets transferred to the back side.
[0017] Furthermore, by allowing the device to be attached between the bicycle basket and the handlebar post, it is possible to maintain the original design of the bicycle to a certain extent.
[0018] In addition, the three-point support effect achieved by fixing the left and right handlebars to the carrier or the tip of the mudguards helps stabilize the bicycle's position when parked. [Brief explanation of the drawings]
[0019] [Figure 1] Winding unit body [Figure 2] Cross section of the center of the winding unit [Figure 3] Installation example 1 [Figure 4] Installation example 2 [Figure 5] When using the cover [Figure 6] Example of fixing the tip of the waterproof fabric DETAILED DESCRIPTION OF THE INVENTION
[0020] As shown in Figure 1, the winding section of this device consists of a case 11, a winding shaft 12, a spiral spring 13, a water drainer blade 17, and a wiping section 18 for wiping the underside of the waterproof cloth. A fixing device 15 for fixing to the handlebar post is attached to the outside of the back of the case, and a fixing device 14 for connecting the bicycle basket to the handlebar post is attached to the outside of the bottom of the case.
[0021] The waterproof cloth 16 is connected to the winding shaft 12 and is wound up by the power of the spiral spring 13, and is structured so that water droplets adhering to the surface of the waterproof cloth are removed to a certain extent by the water cutter blade 17 when the waterproof cloth is wound up. In addition, water droplets that the water cutter blade cannot remove completely and are transferred to the backside of the waterproof cloth 16 when the waterproof cloth is pulled out and wound up are wiped away by the wiping part 18.
[0022] Next, the hoist unit body is attached to the handle post and the bicycle basket fixing bracket in two places using the bottom fixing device 14 and handle post fixing device 15 provided with the body, as shown in Figure 3. However, for vehicles that do not have sufficient space in the relevant places, it can be attached in any place, such as inside the bicycle basket, as shown in Figure 4, and in that case, unnecessary fixing devices should be removed as appropriate.
[0023] Also, left and right fixing devices 31 for the waterproof cloth handle shown in FIG. 3 are installed on the left and right handles.
[0024] When pulling out and attaching the waterproof cloth, secure it to the rear of the bicycle at the end of the carrier or the end of the mudguard using the waterproof cloth end fasteners 51, as shown in Figure 5. Next, roll up any excess waterproof cloth to prevent it from sagging, and then secure the waterproof cloth on both sides using the left and right waterproof cloth handle fasteners 31.
[0025] In addition, when attaching the rear of the bicycle as a luggage rack, a more stable attachment can be achieved by using the eyelets 52 attached to the tip of the waterproof cloth and attaching it to protrusions such as string hooks on the left and right sides of the lower part of the luggage rack.
[0026] It is desirable that the main body, the winding part, be made of a material that does not rust in rainwater and is highly weather resistant, such as stainless steel, aluminum, or resin.
[0027] In addition, power parts such as the mainspring need to be waterproofed to prevent rust, but since they are expected to get wet with rainwater, the entire winding part does not need to be closed off, and it is desirable for it to have a large opening from the perspective of drying.
[0028] Furthermore, it is desirable that the material of the part inside the winding section where the protective cloth is wiped be a material that is both water absorbent and quick-drying.
[0029] Furthermore, the protective fabric is preferably made of a material that is waterproof, water-repellent, or both, and does not allow rainwater to pass through, and is tear-resistant and does not stretch.It is desirable that the thickness be about 0.3 millimeters or less, and ideally about 0.1 millimeters.
[0030] The width of the cloth should not exceed the width of the bicycle basket, and it is desirable that it is not too wide.The total length should be about the same as the total length of a typical bicycle, but ideally it should be as short as possible. [Industrial Applicability]
[0031] By changing the drive system from a spiral spring to a spring motor system like those used in roller curtains, or by using an electric motor as the power source, it becomes possible to further miniaturize the device, integrate it with the bicycle basket, and improve its design and stability. Furthermore, when using an electric motor as the power source, it is possible to use the battery of an electrically assisted bicycle as the power source, so this invention can be widely used. [Explanation of symbols]
[0032] 11 Box 12 Winding shaft 13 Mainspring 14 Bottom fixing tool 15 Handle post fixing device 16 Waterproof cloth 17 Draining blade 18 Wiping section 31 Left and right fixing devices for waterproof cloth handle 32 Winding unit body 51 Waterproof cloth tip fixture 52 Eyelets
Claims
[Claim 1] This roll-up type bicycle cover is attached between the handle post and the basket of a bicycle or to the bicycle basket and allows the waterproof cloth to be rolled up, protecting the bicycle from rainwater and sunlight while at the same time having the effect of maintaining the bicycle's posture when parked.
Citation Information
Patent Citations
JP1992039981U
blind bike cover
JP3138998U