A cartridge shaft with a built-in battery assembly

Abstract

The utility model relates to the technical field of bicycle cylinder axle, disclose a cylinder axle of built -in battery assembly, include: including main casing, auxiliary casing and battery assembly, the main casing built -in assembly cavity, the main casing is provided with at least one clamping groove, the auxiliary casing is placed in the assembly cavity, the auxiliary casing is provided with installation cavity and at least one clamping block, under the installation state, the clamping groove is matched with clamping of the clamping block, the battery assembly sets up in the installation cavity, the battery assembly includes cable interface, and the cable interface is used for connecting with external connecting wire connection. The utility model aims at installing the battery assembly in the cylinder axle, solves the problem that the battery assembly and speed changer between wiring are difficult, has the effect that compact structure, stable and reliable, good sealing.

Description

Technical Field

[0001] This utility model relates to the field of bicycle thru-axle technology, specifically a thru-axle with a built-in battery assembly. Background Technology

[0002] The thru-axle is primarily installed at the hub of the bicycle wheel (front and rear wheel). The hub is the central part of the wheel, connecting the axle and spokes. The thru-axle passes through the center of the hub, with its two ends fixed to the front fork (front wheel) or rear triangle (rear wheel) of the frame, respectively.

[0003] In bicycle electronic derailleurs, the battery is a crucial component. It not only provides electrical energy to the derailleur, enabling it to convert electrical energy into mechanical energy for rapid and precise gear shifting, but also, in current technology, batteries that power the derailleur are typically installed on the outside of the seatpost or chainstays, or integrated into the rear derailleur. However, installing the battery assembly on the seatpost requires the connection cable to the electronic derailleur to pass through the seatpost to the bottom bracket, and then exit from the bottom bracket to the end hole on the right side of the chainstay – a cumbersome and difficult installation process. Furthermore, if the battery ages or the wiring is damaged or broken, replacing the battery or wiring requires removing the seatpost and unplugging the battery and derailleur connection cable, which is also difficult to disassemble.

[0004] Therefore, there is an urgent need to develop a cylindrical shaft with a built-in battery assembly. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a cylindrical shaft with an integrated battery assembly, aiming to install the battery assembly inside the shaft and solve the problem of difficult wiring between the battery assembly and the transmission; it features a compact structure, robust reliability, and good sealing performance. The implementation of this technical solution is as follows:

[0006] A cylindrical shaft with a built-in battery assembly includes: a main housing, a secondary housing, and a battery assembly; the main housing has a built-in assembly cavity and at least one snap-fit ​​groove; the secondary housing is placed within the assembly cavity and has an installation cavity and at least one locking block, wherein in the installed state, the snap-fit ​​groove and the locking block engage; the battery assembly is disposed within the installation cavity and includes a cable interface for connecting to an external connection cable.

[0007] Preferably, the main housing includes a main threaded cylinder, the secondary housing includes a secondary threaded cylinder, the secondary threaded cylinder is fixedly connected to or integrally formed with the secondary housing, and the secondary threaded cylinder is threadedly connected to the main threaded cylinder.

[0008] Preferably, the battery assembly includes a circuit board and at least one battery, the battery being electrically connected to the circuit board.

[0009] Preferably, two batteries are provided, and the batteries are connected in series through a first electrode plate.

[0010] Preferably, the mounting cavity includes a circuit board cavity and at least one battery cavity, with the battery embedded in the battery cavity and the circuit board embedded in the circuit board cavity.

[0011] Preferably, the circuit board is electrically connected to the cable interface.

[0012] Preferably, the snap-fit ​​groove is a right-angle snap-fit ​​groove.

[0013] Preferably, it further includes a sealing ring, and the sub-housing is provided with a sealing groove, and the sealing ring is installed on the sealing groove.

[0014] Preferably, a fixing part is provided at one end of the main housing, and the fixing part is provided with a fixing groove.

[0015] Preferably, the battery assembly further includes a second electrode plate and a third electrode plate, and the circuit board is further provided with a conductive plate, which is connected to the second electrode plate and the third electrode plate respectively.

[0016] Compared with the prior art, this application has the following advantages:

[0017] In this technical solution, the secondary housing and the main housing are secured by a snap-fit ​​groove and a snap-fit ​​block. Simultaneously, the secondary threaded cylinder of the secondary housing is threadedly connected to the main threaded cylinder of the main housing, forming a complete cylinder-shaft structure. The battery assembly is installed within the mounting cavity of the secondary housing. The batteries are connected in series via first electrode plates and connected to the power input terminal of the circuit board, thereby providing power to the circuit board. The circuit board is electrically connected to a cable interface located in the main threaded cylinder, which is used to connect the electronic derailleur's wiring. When the cylinder-shaft is installed in the corresponding position on the bicycle, the electrical energy generated by the battery assembly is transmitted through the circuit board to the cable interface, and then via the wiring to the electronic derailleur.

[0018] The sealing ring in this technical solution is installed on the sealing groove of the secondary housing to enhance the sealing performance of the spool and prevent external water, dust, and other impurities from entering the spool and affecting the normal operation of the battery assembly and various connecting parts. A fixing groove is provided at one end of the spool to facilitate installation using external tools, ensuring the spool is stably installed on the bicycle.

[0019] In summary, the cylindrical structure of this built-in battery assembly is compact, robust, reliable, and well-sealed. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is an exploded view of the cylindrical shaft of this utility model;

[0023] Figure 3 This is a diagram showing the internal structure of the cylindrical shaft of this utility model;

[0024] Figure 4 for Figure 3 Another perspective view;

[0025] Figure 5 This is a structural diagram of the secondary housing of this utility model;

[0026] Figure 6 This is a structural diagram of the battery assembly of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Main housing; 11. Assembly cavity; 12. Snap-fit ​​groove; 13. Fixing part; 131. Fixing groove; 14. Main threaded cylinder;

[0029] 2. Sub-shell; 21. Clamping block; 22. Mounting cavity; 221. Battery cavity; 222. Circuit board cavity; 23. Sub-threaded cylinder; 24. Sealing groove;

[0030] 3. Battery assembly; 31. Battery; 32. First electrode plate; 33. Circuit board; 331. Conductive plate; 332. Second electrode plate; 333. Third electrode plate; 34. Cable interface;

[0031] 4. Sealing ring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0033] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] refer to Figure 1-6 This application provides a thru-axle with a built-in battery assembly, including a main housing 1, a secondary housing 2, and a battery assembly 3. The main housing 1 has a built-in assembly cavity 11 and at least one snap-fit ​​groove 12. The secondary housing 2 is placed inside the assembly cavity 11 and has an installation cavity 22 and at least one locking block 21. In the installed state, the snap-fit ​​groove 12 and the locking block 21 engage. The battery assembly 3 is disposed in the installation cavity 22 and includes a cable interface 34 for connecting to an external cable. This application installs the battery assembly 3 inside the thru-axle, changing the traditional installation position and method of the battery assembly 3. Compared to the prior art where the battery assembly 3 is installed outside the bicycle seatpost, chainstay, or integrated into the rear derailleur, installing the battery assembly 3 inside the thru-axle avoids the problem of the connecting cable having to travel complexly between various parts of the bicycle, making the installation process simpler and easier to replace and repair the battery assembly 3 later.

[0036] Specifically, by assembling the battery assembly 3 into the secondary housing 2, which then engages with the main housing 1 to form a cylindrical shaft, the shaft is installed onto the corresponding position on the bicycle. This completes the overall assembly process. This assembly method makes installation simple and efficient, eliminating the need for complex wiring and tedious disassembly steps, greatly improving the convenience of installation and disassembly, reducing the requirements for professional tools and operating skills, and making it convenient for users to operate independently.

[0037] In some implementations, such as Figure 1-2As shown, the main housing 1 includes a main threaded cylinder 14, which is disposed at one end of the main housing 1 and has both internal and external threads. The secondary housing 2 includes a secondary threaded cylinder 23, which is fixedly connected to or integrally formed with the secondary housing 2. The secondary threaded cylinder 23 is disposed at one end of the secondary housing 2 and has external threads. The secondary threaded cylinder 23 is threadedly connected to the main threaded cylinder 14. Specifically, the internal thread of the main threaded cylinder 14 and the external thread of the secondary threaded cylinder 23 are connected, and the external thread of the main threaded cylinder 14 is used for installation on the corresponding position of the bicycle.

[0038] In some implementations, such as Figure 6 As shown, the battery assembly 3 includes a circuit board 33 and at least one battery 31. Preferably, two batteries 31 are provided, and the batteries 31 are connected in series through a first electrode plate 32. The batteries 31 are electrically connected to the circuit board 33. Specifically, the battery assembly 3 also includes a second electrode plate 332 and a third electrode plate 333. The function of the second electrode plate 332 and the third electrode plate 333 is to transfer the electrical energy of the battery 31 to the circuit board 33. The circuit board 33 is provided with a conductive plate 331. Specifically, the conductive plate 331 is connected to the second electrode plate 332 and the third electrode plate 333 respectively, preferably by welding. The second electrode plate 332 and the third electrode plate 333 respectively abut against two batteries 31. Wherein, the second electrode plate 332 abuts against the negative terminal of one battery 31 and the third electrode plate 333 abuts against the positive terminal of the other battery; or the second electrode plate 332 abuts against the positive terminal of one battery and the third electrode plate 333 abuts against the negative terminal of the other battery.

[0039] In some implementations, such as Figure 3-5 As shown, the mounting cavity 22 is provided with a wire board cavity 222 and at least one battery cavity 221. Preferably, there are two battery cavities 221. The battery 31 is embedded in the battery cavity 221, and the circuit board 33 is embedded in the wire board cavity 222. Specifically, the circuit board 33 is fixed to the wire board cavity 222 by a fastener (not shown). By setting the battery 31 and the circuit board 33 in the mounting cavity 22, the battery 31 and the circuit board 33 can be fixed and protected respectively, avoiding loosening or damage to the connection between the battery 31 and the circuit board 33 due to bumps, vibrations, etc. during riding. At the same time, the layout of the battery assembly 3 is more reasonable and compact, and the utilization of the internal space of the cylinder shaft is optimized.

[0040] In some implementations, such as Figure 4 As shown, the circuit board 33 is electrically connected to the cable interface 34, which is disposed in the auxiliary threaded cylinder 23 and is used to connect the connecting wire of the electronic transmission.

[0041] In some implementations, such as Figure 1 As shown, the snap-fit ​​slot 12 is a right-angle snap-fit ​​slot.

[0042] In some implementations, such as Figure 3 and Figure 5 As shown, it also includes a sealing ring 4. The sub-housing 2 is provided with a sealing groove 24. The sealing groove 24 is located between the line plate cavity 222 and the sub-threaded cylinder 23. The sealing ring 4 is installed on the sealing groove 24 to prevent external water, dust and other impurities from entering the cylinder shaft and affecting the normal operation of the battery assembly 3 and other parts.

[0043] In some implementations, such as Figure 1 As shown, a fixing part 13 is provided at one end of the main housing 1. The fixing part 13 is provided with a fixing groove 131, which is an internal hexagonal groove. The purpose is to facilitate the installation of the cylinder shaft by using external tools (such as an internal hexagonal wrench), so that the cylinder shaft can be stably and firmly installed in the corresponding position of the bicycle, thereby improving the overall assembly efficiency and quality.

[0044] In some implementations, such as Figure 1-2 As shown, there are four snap-fit ​​grooves 12, which are evenly distributed along the axis of the main housing 1; there are also four snap-fit ​​blocks 21. During installation, the snap-fit ​​blocks 21 cooperate with the snap-fit ​​grooves 12, and the evenly distributed force makes the secondary housing 2 and the main housing 1 tightly connected; so as to ensure that the secondary housing 2 and the main housing 1 can achieve a stable and reliable snap-fit ​​engagement, and enhance the overall structural stability of the cylinder shaft.

[0045] The working principle of the cylindrical shaft in this embodiment is as follows:

[0046] In this technical solution, the secondary housing 2 and the main housing 1 are locked together by a snap-fit ​​groove 12 and a snap-fit ​​block 21. Simultaneously, the secondary threaded cylinder 23 of the secondary housing 2 is threadedly connected to the main threaded cylinder 14 of the main housing 1, forming a complete cylinder-shaft structure. The battery assembly 3 is installed in the mounting cavity 22 of the secondary housing 2. The battery 31 is connected in series via the first electrode plate 32 and connected to the power input terminal of the circuit board 33, thereby providing power to the circuit board 33. The circuit board 33 is electrically connected to the cable interface 34 located in the main threaded cylinder 14, which is used to connect the electronic derailleur's connecting wire. When the cylinder-shaft is installed in the corresponding position on the bicycle, the electrical energy generated by the battery assembly 3 is transmitted through the circuit board 33 to the cable interface 34, and then to the electronic derailleur via the connecting wire. Furthermore, a sealing ring 4 is installed on the sealing groove 24 of the secondary housing 2 to enhance the sealing performance of the cylinder-shaft and prevent external water, dust, and other impurities from entering the cylinder-shaft and affecting the normal operation of the battery assembly 3 and other connecting parts. The fixing part 13 at one end of the spool is provided with a fixing groove 131, which facilitates installation by external tools and ensures that the spool is stably installed on the bicycle.

[0047] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A cylindrical shaft with a built-in battery assembly, characterized in that, include: The main housing has a built-in assembly cavity and is provided with at least one snap-fit ​​groove; A secondary housing is placed inside an assembly cavity. The secondary housing is provided with an installation cavity and at least one locking block. In the installed state, the locking groove engages with the locking block. A battery assembly disposed within a mounting cavity, the battery assembly including a cable interface for connecting to an external connection cable.

2. The cylindrical shaft of the built-in battery assembly according to claim 1, characterized in that, The main housing includes a main threaded cylinder, and the secondary housing includes a secondary threaded cylinder. The secondary threaded cylinder is fixedly connected to the secondary housing or integrally formed therefrom, and the secondary threaded cylinder is threadedly connected to the main threaded cylinder.

3. The cylindrical shaft of the built-in battery assembly according to claim 1, characterized in that, The battery assembly includes a circuit board and at least one battery, the battery being electrically connected to the circuit board.

4. The cylindrical shaft of the built-in battery assembly according to claim 3, characterized in that, Two batteries are provided, and the batteries are connected in series through a first electrode plate.

5. The cylindrical shaft of the built-in battery assembly according to claim 3, characterized in that, The mounting cavity includes a circuit board cavity and at least one battery cavity, with the battery embedded in the battery cavity and the circuit board embedded in the circuit board cavity.

6. The cylindrical shaft of the built-in battery assembly according to claim 3, characterized in that, The circuit board is electrically connected to the cable interface.

7. The cylindrical shaft of the built-in battery assembly according to claim 1, characterized in that, The slot is a right-angle slot.

8. The cylindrical shaft of the built-in battery assembly according to any one of claims 1-7, characterized in that, It also includes a sealing ring, and the sub-housing has a sealing groove, on which the sealing ring is installed.

9. The cylindrical shaft of the built-in battery assembly according to claim 1, characterized in that, The main housing has a fixing part at one end, and the fixing part has a fixing groove.

10. The cylindrical shaft of the built-in battery assembly according to any one of claims 4-6, characterized in that, The battery assembly also includes a second electrode plate and a third electrode plate, and the circuit board is further provided with a conductive plate, which is connected to the second electrode plate and the third electrode plate respectively.

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