Double zipper bag

By designing a double zipper structure on the bicycle tail bag and using linkages and magnets to achieve one-handed operation, the problem of inconvenient use of existing bicycle tail bag zippers is solved, improving the user experience and efficiency.

CN224448000UActive Publication Date: 2026-07-03王道刚

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
王道刚
Filing Date
2025-09-09
Publication Date
2026-07-03

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Abstract

A double-zippered bag includes a bag body and an opening / closing section. A first end of the opening / closing section is connected to a first end of the bag body. A first zipper and a second zipper are respectively provided between the two sides of the opening / closing section and the bag body. The first zipper and the second zipper connect the bag body and the opening / closing section. A linkage is provided between the first zipper and the second zipper. The linkage allows the first zipper and the second zipper to engage synchronously, covering the opening / closing section onto the bag body. The linkage also allows the first zipper and the second zipper to disengage synchronously, at least partially separating the opening / closing section from the bag body to open the double-zippered bag. This invention provides a wide field of vision when retrieving items and allows for one-handed, single-operation opening / closing, greatly improving the efficiency of opening / closing the double-zippered bag and enhancing the user experience.
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Description

Technical Field

[0001] This utility model relates to the field of bicycle accessories, and in particular to a double zipper bag. Background Technology

[0002] To facilitate cyclists carrying essential items such as keys, phones, and cards while riding, many bicycle tail bags have been developed on the market. These bags can be fixed to the bicycle seatpost and saddle, and feature pockets that open via zippers. Most existing bicycle tail bags use either a linear single zipper or a curved single zipper for the individual pockets. While linear single-zipper bags can be easily opened and closed with one hand, the opening is often narrow, requiring the other hand to help widen it for a clear view of the contents. Curved single-zipper bags offer a larger opening, but the curved shape requires the user to constantly change the direction of the zipper, resulting in a poor user experience and the zipper easily getting stuck due to the constant changes in direction. Utility Model Content

[0003] The present invention aims to solve the above problems by providing a double zipper bag with a large opening that can be opened and closed with one hand, providing a good user experience.

[0004] To address the aforementioned problems, this utility model provides a double-zipper bag, comprising a bag body, characterized in that it further includes an opening and closing portion, a first end of which is connected to a first end of the bag body, a first zipper and a second zipper respectively provided between the two sides of the opening and closing portion and the bag body, the first zipper and the second zipper connecting the bag body and the opening and closing portion, and a linkage member provided between the first zipper and the second zipper, the linkage member enabling the first zipper and the second zipper to engage synchronously to cover the opening and closing portion on the bag body, and the linkage member enabling the first zipper and the second zipper to disengage synchronously to at least partially separate the opening and closing portion from the bag body to open the double-zipper bag.

[0005] Furthermore, the second end of the package body is provided with a first magnet, and the second end of the opening and closing part is provided with a second magnet. The first magnet and the second magnet can be attracted together to combine the second end of the opening and closing part with the package body, and can be separated from each other.

[0006] Furthermore, the bag body is provided with an access port corresponding to the opening and closing part. The access port is used to store and retrieve items in the bag, and the opening and closing part can cover the access port to close the bag body.

[0007] Furthermore, the first zipper and the second zipper are of the same length and are parallel to each other.

[0008] Furthermore, the engagement trajectory of the first zipper and the second zipper is in a direction away from the first end of the opening and closing part, and the separation trajectory is in a direction close to the first end of the opening and closing part.

[0009] Furthermore, the second end of the opening and closing part is provided with a lifting part, which is used to lift the opening and closing part to simultaneously separate the first zipper and the second zipper, thereby at least partially separating the opening and closing part from the bag body and opening the double zipper bag.

[0010] Furthermore, the package body includes a first connector and a second connector. The first connector is located at the third end of the package body and is used to connect the fixed seat tube and the package body. The second connector is used to connect the fixed saddle and the package body.

[0011] Furthermore, rigid pads are provided on both sides of the bag body. The rigid pads are used to support and shape the bag body to define its three-dimensional shape and protect the teeth of the first zipper and the second zipper to keep them straight and prevent them from deforming.

[0012] Furthermore, the inner wall of the package and / or the inner wall of the opening and closing portion is provided with a mesh pocket.

[0013] Furthermore, a reflective webbing is provided on the outer side of the opening and closing part.

[0014] The beneficial contribution of this utility model lies in its effective solution to the aforementioned problems. By providing an access port on the bag body and using an opening and closing mechanism, this utility model expands the user's field of vision when retrieving items, thus improving the user experience. Furthermore, the design, which connects two linear zippers with a linkage and includes a pull tab at the second end of the opening and closing mechanism, allows for one-handed, single-operation opening / closing of the double-zippered bag, significantly improving efficiency. This application features a simple structure, low failure rate, and practical functionality, and is therefore worthy of widespread promotion. Attached Figure Description

[0015] Figure 1 This is a diagram showing the closed state of a double-zippered bag.

[0016] Figure 2 This is a diagram showing the double-zippered bag in its open state.

[0017] Explanation of reference numerals in the attached drawings: bag body 10, first magnet 101, first connector 102, second connector 103, access port 104, opening and closing part 11, second magnet 111, lifting part 112, reflective webbing 113, first zipper 12, second zipper 13, linkage part 14, net bag 15. Detailed Implementation

[0018] The following embodiments are further explanations and supplements to the present invention and do not constitute any limitation on the present invention.

[0019] like Figures 1-2 As shown, a double-zipper bag includes a bag body 10, characterized in that it further includes an opening and closing portion 11. The first end of the opening and closing portion 11 is connected to the first end of the bag body 10. A first zipper 12 and a second zipper 13 are respectively provided between the two sides of the opening and closing portion 11 and the bag body 10. The first zipper 12 and the second zipper 13 connect the bag body 10 and the opening and closing portion 11. A linkage member 14 is provided between the first zipper 12 and the second zipper 13. The linkage member 14 can cause the first zipper 12 and the second zipper 13 to engage synchronously to cover the opening and closing portion 11 on the bag body 10, and the linkage member 14 can cause the first zipper 12 and the second zipper 13 to separate synchronously to at least partially separate the opening and closing portion 11 and the bag body 10 to open the double-zipper bag.

[0020] Furthermore, the second end of the package body 10 is provided with a first magnet 101, and the second end of the opening and closing portion 11 is provided with a second magnet 111. The first magnet 101 and the second magnet 111 can be attracted together, so that the second end of the opening and closing portion 11 is combined with the package body 10, and can be separated from each other. When the opening and closing portion 11 covers the package body 10, the positions of the first magnet 101 and the second magnet 111 overlap, so the first magnet 101 and the second magnet 111 are attracted together. The number of the first magnet 101 and the second magnet 111 is not limited. Preferably, the number of the first magnet 101 and the number of the second magnet 111 are the same; when the opening and closing portion 11 covers the package body 10, any one of the first magnet 101 / second magnet 111 has a corresponding second magnet 111 / first magnet 101 that can be magnetically attracted. In this embodiment, the number of the first magnet 101 and the second magnet 111 is one.

[0021] Furthermore, the bag body 10 is provided with an access port 104 corresponding to the opening and closing part 11. The access port 104 is used to store and retrieve items in the bag, and the opening and closing part 11 can close the access port 104 to seal the bag body 10. The design of the access port 104 allows the user to have a better view of the contents of the bag when the double-zipper bag is in the open state, and also makes it more convenient to store and retrieve items.

[0022] Furthermore, the first zipper 12 and the second zipper 13 are of the same length and are parallel to each other. The design that the first zipper 12 and the second zipper 13 are of the same length allows them to simultaneously achieve a fully engaged / fully disengaged state under the action of the linkage 14; the parallel design allows for the movement of the first zipper 12 and the second zipper 13 with a smaller force applied to the linkage 14.

[0023] Furthermore, the engagement trajectory of the first zipper 12 and the second zipper 13 is away from the first end of the opening / closing portion 11, and the separation trajectory is close to the first end of the opening / closing portion 11. The first end of the opening / closing portion 11 is located above the second end of the opening / closing portion 11, that is, the final engagement point of the first zipper 12 and the second zipper 13 is below it, preventing rain and snow from entering the bag body 10 in rainy or snowy weather.

[0024] Furthermore, the second end of the opening and closing portion 11 is provided with a lifting portion 112. The lifting portion 112 is used to lift the opening and closing portion 11 to simultaneously separate the first zipper 12 and the second zipper 13, thereby at least partially separating the opening and closing portion 11 from the bag body 10 and opening the double-zipper bag. The user can open the double-zipper bag by pulling the lifting portion 112 upwards, which in turn drives the opening and closing portion 11 to separate the first magnet 101 and the second magnet 111, and simultaneously separate the first zipper 12 and the second zipper 13, thereby at least partially separating the opening and closing portion 11 from the bag body 10.

[0025] Further, the bag body 10 includes a first connector 102 and a second connector 103. The first connector 102 is located at the third end of the bag body 10, opposite to the first magnet 101, and is used to connect and fix the seat tube and the bag body 10. The second connector 103 is located between the first end and the third end of the bag body 10 and is used to connect and fix the saddle and the bag body 10. The first connector 102 and the second connector 103 can be Velcro, hooks and loops, magnetic snaps, etc., and there are no restrictions on the type and connection method. In this embodiment, both the first connector 102 and the second connector 103 are Velcro, which fixes the bag body 10 to the seat tube and the saddle together.

[0026] Furthermore, rigid pads are provided on both sides of the bag body 10. These rigid pads are used for support and shaping to define the three-dimensional shape of the bag body 10, and to protect the teeth of the first zipper 12 and the second zipper 13 from deformation by keeping them straight. The material of the rigid pads is not limited; in this embodiment, the rigid pads are made of EVA material.

[0027] Furthermore, the inner wall of the bag body 10 and / or the inner wall of the opening / closing portion 11 is provided with a mesh pocket 15. To enhance the carrying capacity of the double-zipper bag, the inner wall of the double-zipper bag is provided with the mesh pocket 15. Both the inner wall of the bag body 10 and the inner wall of the opening / closing portion 11 can be provided with mesh pockets 15; a design where the inner wall of the bag body 10 is provided with the mesh pocket 15 and the opening / closing portion 11 is not provided with the mesh pocket 15, or a design where the inner wall of the bag body 10 is not provided with the mesh pocket 15 and the opening / closing portion 11 is provided with the mesh pocket 15, is acceptable. In this embodiment, both the inner wall of the bag body 10 and the inner wall of the opening / closing portion 11 are provided with the mesh pocket 15. Furthermore, the location of the mesh pocket 15 on the inner wall of the bag body 10 and the inner wall of the opening / closing portion 11 is not limited and can be any reasonable location.

[0028] Furthermore, a reflective webbing 113 is provided on the outer side of the opening / closing portion 11. The shape and number of the reflective webbing 113 are not limited and can be any reasonable design. In this embodiment, the reflective webbing 113 is rectangular and there is one piece. The connection method between the reflective webbing 113 and the outer side of the opening / closing portion 11 includes, but is not limited to, sewing or gluing. In this embodiment, the reflective webbing 113 is sewn onto the outer side of the opening / closing portion 11.

[0029] In use, the double-zippered bag is secured to the bicycle via the first connector 102 and the second connector 103. To open the double-zippered bag, the user can pull upwards on the pull-up part 112, causing the opening / closing part 11 to separate the first magnet 101 and the second magnet 111, and simultaneously separate the first zipper 12 and the second zipper 13, thus at least partially separating the opening / closing part 11 from the bag body 10. To close the double-zippered bag, the user can pull downwards on the linkage 14, causing the first zipper 12 and the second zipper 13 to engage, causing the opening / closing part 11 to cover the access port 104, and the first magnet 101 and the second magnet 111 to magnetically attract each other, thus closing the double-zippered bag.

[0030] Although the present invention has been disclosed through the above embodiments, the scope of the present invention is not limited thereto. Without departing from the concept of the present invention, the above components can be replaced by similar or equivalent elements known to those skilled in the art.

Claims

1. A double-zippered bag, comprising a bag body (10), characterized in that, It also includes an opening and closing part (11), the first end of which is connected to the first end of the bag body (10). A first zipper (12) and a second zipper (13) are respectively provided between the two sides of the opening and closing part (11) and the bag body (10). The first zipper (12) and the second zipper (13) connect the bag body (10) and the opening and closing part (11). A linkage (14) is provided between the first zipper (12) and the second zipper (13). The linkage (14) allows the first zipper (12) and the second zipper (13) to engage synchronously to cover the opening and closing part (11) on the bag body (10). The linkage (14) also allows the first zipper (12) and the second zipper (13) to separate synchronously to at least partially separate the opening and closing part (11) and the bag body (10) to open the double zipper bag.

2. A dual zipper bag as defined in claim 1, wherein, The second end of the package (10) is provided with a first magnet (101), and the second end of the opening and closing part (11) is provided with a second magnet (111). The first magnet (101) and the second magnet (111) can be attracted together so that the second end of the opening and closing part (11) is combined with the package (10), and can be separated from each other.

3. A dual zipper bag as defined in claim 1, wherein, The package (10) is provided with an access port (104) corresponding to the opening and closing part (11). The access port (104) is used to store and retrieve items in the package. The opening and closing part (11) can cover the access port (104) to close the package (10).

4. The dual zipper pouch of claim 1, wherein, The first zipper (12) and the second zipper (13) have the same length and are parallel to each other.

5. A dual zipper bag as defined in claim 1, wherein, The engagement trajectory of the first zipper (12) and the second zipper (13) is away from the first end of the opening and closing part (11), and the separation trajectory is close to the first end of the opening and closing part (11).

6. A dual zipper bag as defined in claim 3, wherein, The second end of the opening and closing part (11) is provided with a lifting part (112), which is used to lift the opening and closing part (11) to simultaneously separate the first zipper (12) and the second zipper (13) and at least partially separate the opening and closing part (11) from the bag body (10) to open the double zipper bag.

7. A dual zipper bag as defined in claim 1, wherein, The package (10) includes a first connector (102) and a second connector (103). The first connector (102) is located at the third end of the package (10) and is used to connect the fixed seat tube and the package (10). The second connector (103) is used to connect the fixed saddle and the package (10).

8. A dual zipper bag as defined in claim 1, wherein, The package body (10) has rigid pads on both sides. The rigid pads are used to support and shape the package body (10) to define its three-dimensional shape and protect the teeth of the first zipper (12) and the second zipper (13) to keep them straight and prevent them from deforming.

9. A dual zipper bag as defined in claim 1, wherein, The inner wall of the package (10) and / or the inner wall of the opening and closing part (11) are provided with a mesh bag (15).

10. The dual zipper pouch of claim 1, wherein, The outer side of the opening and closing part (11) is provided with a reflective webbing (113).