Bicycle hub and bicycle

Abstract

A bicycle hub comprises a connecting shaft and a shell pivoted to the connecting shaft, and a containing space is formed between the connecting shaft and the shell. The magnetic element, the circuit board and the Hall element are arranged in the accommodating space; the Hall element is electrically connected to the circuit board and is used for being matched with the magnetic element; the connecting shaft is fixedly connected with a first mounting seat, the first mounting seat is provided with a bearing surface, the circuit board is mounted on the bearing surface, and the magnetic element is mounted on the shell. The utility model further provides a bicycle using the bicycle hub. Compared with the prior art, the bicycle hub has the advantages that by optimizing the assembly structure of the magnetic element, the circuit board and the Hall element, the assembly reliability of the circuit board and the Hall element is improved, the service life of the circuit board and the Hall element is prolonged, and the installation difficulty is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of hubs, and in particular relates to a bicycle hub and a bicycle using the bicycle hub. Background Art

[0002] In order to measure the speed of a bicycle, the prior art has a speed measuring device arranged on the hub of the bicycle, such as the hub assembly provided by authorization announcement No. CN218257551U, which includes a shell and a rotating shaft arranged in the shell, wherein a cover plate covering the installation window of the shell is provided with a mounting seat, the mounting seat is provided with a magnetic induction unit (such as a Hall element) for detecting a magnetic field, a circuit board, a power supply, etc., and a magnetic element corresponding to the magnetic induction unit is provided on the rotating shaft, and the speed of the bicycle is detected by the cooperation of the magnetic induction unit and the magnetic element.

[0003] After the hub is installed on the bicycle, its rotating shaft is fixed, and the shell rotates with the tire through the tire line. The above hub assembly installs the magnetic induction unit, circuit board and other components on the mounting seat, which rotates with the cover plate and the shell. The components will be affected by centrifugal force, resulting in increased mechanical stress. Long-term operation may cause fatigue or damage to the components, and the reliability is low. In addition, due to the small actual size of the shell, the installation window and cover plate are set on the shell, which increases the difficulty of processing and assembling the shell and increases the cost. Utility Model Content

[0004] The utility model aims to overcome the deficiencies in the prior art and provide a bicycle hub.

[0005] To achieve the above objectives, the utility model discloses a bicycle hub, comprising a connecting shaft and a shell pivotally connected to the connecting shaft, wherein an accommodation space is formed between the connecting shaft and the shell;

[0006] It also includes a magnetic element, a circuit board, and a Hall element electrically connected to the circuit board for cooperating with the magnetic element, which are arranged in the accommodation space;

[0007] A first mounting seat is fixedly connected to the connecting shaft. The first mounting seat is provided with a bearing surface. The circuit board is mounted on the bearing surface. The magnetic element is mounted on the housing.

[0008] Preferably, there are a plurality of magnetic elements, and the plurality of magnetic elements are evenly distributed.

[0009] Preferably, it further comprises a wire electrically connected to the circuit board, and the connecting shaft is provided with a wire threading channel connecting the accommodating space and the outside world, and the wire passes through the wire threading channel to the outside world.

[0010] Preferably, it further comprises a wire electrically connected to the circuit board, and the first mounting seat is provided with a wire harness groove for fixing the wire.

[0011] Further preferably, there are a plurality of the cable ducts, and the plurality of the cable ducts are arranged side by side.

[0012] Further preferably, there are two groups of the cable ducts, and the two groups of the cable ducts are symmetrically arranged.

[0013] Preferably, the shell includes a shell body and a second mounting seat fixed to an end of the shell body, the second mounting seat is pivotally connected to the connecting shaft, and a connecting portion for mounting the magnetic element is provided on an end surface of the second mounting seat close to the shell body.

[0014] Further preferably, a port at the end of the shell body close to the second mounting seat has a bell mouth, and the Hall element is located in the bell mouth.

[0015] Further preferably, the connecting portion is a slot structure, and the magnetic element is embedded in the slot.

[0016] Further preferably, the second mounting seat is threadedly connected to the shell body, and a disassembly hole is provided on an end surface of the second mounting seat away from the shell body.

[0017] Preferably, a seal is provided between the connecting shaft and the housing.

[0018] The utility model also provides a bicycle using the bicycle hub.

[0019] A bicycle comprises a hub, wherein the hub is any one of the bicycle hubs described above.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] After the bicycle hub of the utility model is installed on the bicycle, its assembly relationship is consistent with that of the existing hub, that is, the connecting shaft is fixed, and the outer shell is connected with the tire through the tire line so as to rotate with the tire.

[0022] By installing the magnetic element on the outer shell and the circuit board on the connecting shaft through the first mounting seat, when the hub is in use, the circuit board and the Hall element on the circuit board are fixed and will not rotate with the outer shell, thereby avoiding the negative impact of centrifugal force on them, which is beneficial to improving assembly reliability and service life.

[0023] The connecting shaft is generally a columnar structure. It is difficult to directly install the circuit board on the connecting shaft. Since the circuit board cannot be effectively supported, the circuit board is easily damaged. In this application, a first mounting seat is set on the connecting shaft and the circuit board is installed on the bearing surface of the first mounting seat. During the installation process, the circuit board can be installed by simply placing it on the mounting surface. The installation is convenient and reduces the difficulty of installing the circuit board. Since the bearing surface effectively supports the circuit board, it can protect the circuit board and avoid damage. The above overall structure for speed measurement is simpler than the structure in CN218257551U (no installation window and cover plate are required), which is conducive to reducing the difficulty of processing and assembling the shell and reducing costs.

[0024] The speed measuring component is integrated in the hub, which makes the hub suitable for bicycles with various brake types and avoids conflicts between the speed measuring component and the brake component in the installation position. In addition, it can also protect the speed measuring device, increase its service life, and make the hub have a better appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the three-dimensional structure of a bicycle hub in Example 1;

[0026] Figure 2 for Figure 1 A schematic diagram of the three-dimensional exploded structure of a bicycle hub;

[0027] Figure 3 for Figure 1 A cross-sectional view of a bicycle hub;

[0028] Figure 4 for Figure 1 A partial schematic diagram of a bicycle hub behind which the main shell is hidden;

[0029] Figure 5 is a schematic diagram of the three-dimensional structure of the first mounting seat;

[0030] Connecting shaft 10;

[0031] Shell 20; shell body 21; spoke hole 211; second mounting seat 22; connecting portion 221; disassembly hole 222; threading channel 223;

[0032] Bearing 30;

[0033] Accommodation space 40;

[0034] Magnetic element 50;

[0035] Circuit board 60;

[0036] Hall element 70;

[0037] First mounting seat 80; bearing surface 81; cable duct 82;

[0038] Conductor 90;

[0039] Seal 100. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0041] Example 1

[0042] A bicycle hub, see Figure 1 , including a connecting shaft 10 and a housing 20 pivotally connected to the connecting shaft 10, wherein the housing 20 is provided with spoke holes 211, and the tire line passes through the spoke holes 211 to achieve the installation of the tire and the hub, and the housing 20 can rotate synchronously with the tire during riding. The connecting shaft 10 is fixedly connected to the fork of the bicycle frame, and the connecting shaft 10 is fixed during riding. The connecting shaft 10 and the housing 20 are pivotally connected through a bearing 30.

[0043] In this embodiment, see Figure 2-Figure 3 The bicycle hub also includes a magnetic element 50 (such as a magnet), a circuit board 60, and a Hall element 70 electrically connected to the circuit board 60 for cooperating with the magnetic element 50. During riding, the Hall element 70 receives the change in the magnetic field generated by the magnetic element 50, thereby measuring the riding speed of the bicycle. The speed measurement principle is consistent with that of the authorization announcement number CN218257551U and will not be repeated here.

[0044] Among them, an accommodating space 40 is formed between the connecting shaft 10 and the housing 20, and the above magnetic element 50, circuit board 60, Hall element 70, power supply module and communication module are arranged in the accommodating space 40. This makes the hub suitable for bicycles with various brake types, avoiding conflicts in the installation position between the speed measuring components and the brake components. In addition, it can also protect the speed measuring device, increase the service life, and make the hub have a better appearance.

[0045] The magnetic element 50 is mounted on the housing 20, and the circuit board 60 and the Hall element 70 are mounted on the connecting shaft 10. In this way, during riding, the circuit board 60 and the Hall element 70 are fixed and will not rotate with the housing 20, avoiding the negative impact of centrifugal force on them, which is beneficial to improving assembly reliability and service life. Compared with the prior art of setting a window and a cover structure on the housing 20, the circuit board 60 and the Hall element 70 are mounted on the connecting shaft 10, which has a simpler structure, is beneficial to reducing the difficulty of processing and assembling the housing 20, and reducing costs.

[0046] In this embodiment, there are multiple magnetic elements 50, preferably 6, and the 6 magnetic elements 50 are evenly distributed. Specifically, each magnetic element 50 is at the same radial position and at six equal positions. In this way, the Hall element 70 can more accurately measure the riding distance of the tire and improve the measurement accuracy.

[0047] In this embodiment, if Figure 3-Figure 4 As shown, the trajectory of the magnetic element 50 after rotating with the housing 20 is the first trajectory, and the probe of the Hall element 70 is opposite to the first trajectory, which enables the Hall element 70 to more accurately sense the magnetic field changes of the magnetic element 50, thereby improving the detection accuracy.

[0048] The connecting shaft 10 is generally a cylindrical structure. It is difficult to directly install the circuit board 60 on the connecting shaft 10. In addition, since the circuit board 60 cannot be effectively supported, it is easy to be damaged. Therefore, in this embodiment, Figure 2-Figure 5 A first mounting seat 80 is fixedly connected to the connecting shaft 10, and the first mounting seat 80 is provided with a bearing surface 81 for bearing the circuit board 60. When installing the circuit board 60, the circuit board 60 is placed on the mounting surface for installation, which facilitates the installation of the circuit board 60 and reduces the difficulty of installing the circuit board 60. At the same time, since the bearing surface 81 effectively bears the circuit board 60, it can protect the circuit board 60 and avoid damage.

[0049] In order to facilitate disassembly, assembly and maintenance, the first mounting seat 80 can be detachably connected to the connecting shaft 10, such as by fixing the first mounting seat 80 and the circuit board 60 to the connecting shaft 10 by screws.

[0050] In this embodiment, see Figure 1-Figure 3 The bicycle hub also includes a wire 90 electrically connected to the circuit board 60, and the wire 90 can be used as a power supply module and / or a communication module. In order to prevent the wire 90 from being affected by the rotation of the housing 20 and causing a winding problem, a threading channel 223 connecting the accommodating space 40 and the outside is provided on the fixed connecting shaft 10, and the wire 90 passes through the threading channel to the outside.

[0051] In this embodiment, see Figure 4-Figure 5 The first mounting seat 80 is provided with a cable groove 82 for fixing the wire 90, so that the wire 90 will not affect other components in the hub, which can reduce the friction of the wire 90, increase the service life of the wire 90, avoid the entanglement problem, and protect the components from being damaged by the wire 90. In addition, it also makes the interior neater and easier to maintain. Preferably, the plastic wire groove is a groove with multiple openings.

[0052] There are multiple cable ducts 82, and the specific number can be set according to actual needs. Multiple cable ducts 82 are arranged side by side. In this way, if the excess wires 90 are long, they can be wound along the multiple cable ducts 82, so that all the wires 90 can be effectively fixed.

[0053] There are two groups of cable ducts 82 , which are symmetrically arranged. In this way, no matter which end of the connecting shaft 10 the first mounting seat 80 is arranged at, both sides thereof have cable ducts 82 to fix the wires 90 , which has strong applicability.

[0054] In the above solution, the power supply module and / or the communication module is realized by the wire 90. In other solutions, a power supply may be provided in the accommodating space 40 to realize power supply, and a WIFI module may be provided to realize communication, and so on.

[0055] In this embodiment, the housing 20 includes a housing body 21 and a second mounting seat 22, which are fixedly connected. In this embodiment, the fixing is achieved by threaded connection. The second mounting seat 22 is pivotally connected to the connecting shaft 10, and its end surface close to the housing body 21 is provided with a connecting portion 221 for mounting the magnetic element 50. The housing 20 is configured as a split housing body 21 and a second mounting seat 22, which facilitates the processing of a structure for mounting the magnetic element 50 and reduces the processing difficulty.

[0056] Among them, Figure 3 As shown, the port of the shell body 21 near the end of the second mounting seat 22 has a bell mouth, the Hall element 70 and the portion of the circuit board 60 corresponding to the Hall element 70 are located in the bell mouth, and the other portion of the circuit board 60 is located in the space away from the bell mouth in the shell body 21. The above structural design can provide a relatively large space at the position of the bell mouth to accommodate the circuit board 60 and the Hall element 70 without increasing the size of the entire shell body 21, and the overall structure is compact.

[0057] The connecting portion 221 on the second mounting seat 22 is a slot structure, and the magnetic element 50 is embedded in the slot, and is fixed in the slot by interference fit. The slot structure is provided on the second mounting seat 22 to install the magnetic element 50, which has a simple structure, is easy to process, and is also easy to assemble.

[0058] Among them, the end face of the second mounting seat 22 away from the shell body 21 is provided with a disassembly hole 222, specifically four centrally symmetrical holes of the same specifications. When the shell body 21 and the second mounting seat 22 need to be disassembled, the four positioning columns of the wrench are inserted into the disassembly hole 222, and the wrench is turned to rotate the second mounting seat 22, so as to remove the second mounting seat 22 from the shell body 21. Similarly, the second mounting seat 22 is tightened by a wrench during installation, which is convenient for disassembly and assembly.

[0059] In this embodiment, a seal 100 is provided between the connecting shaft 10 and the housing, which can seal the gap between the connecting shaft 10 and the housing, protect internal components, and increase the service life of the components.

[0060] Example 2

[0061] A bicycle comprises a frame, a hub and a tire, wherein the frame and the tire adopt the existing technology, and the hub adopts the hub as in the embodiment.

[0062] The connecting shaft 10 of the hub is fixedly connected to the fork of the frame, and the outer shell 20 of the hub is connected to the tire through the tire line.

[0063] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A bicycle hub, comprising a connecting shaft and a housing pivotally connected to the connecting shaft, wherein a receiving space is formed between the connecting shaft and the housing; It also includes a magnetic element, a circuit board, and a Hall element electrically connected to the circuit board for cooperating with the magnetic element, which are arranged in the accommodation space; Features: A first mounting seat is fixedly connected to the connecting shaft. The first mounting seat is provided with a bearing surface. The circuit board is mounted on the bearing surface. The magnetic element is mounted on the housing.

2. The bicycle hub according to claim 1, characterized in that: There are multiple magnetic elements, and the multiple magnetic elements are evenly distributed.

3. The bicycle hub according to claim 1, characterized in that: It also includes a wire electrically connected to the circuit board. The connecting shaft is provided with a wire threading channel connecting the accommodating space and the outside world. The wire passes through the wire threading channel to the outside world.

4. The bicycle hub according to claim 1, characterized in that: It also includes a wire electrically connected to the circuit board, and the first mounting seat is provided with a wire harness groove for fixing the wire.

5. The bicycle hub according to claim 4, characterized in that: There are a plurality of the cable ducts, and the plurality of the cable ducts are arranged side by side.

6. The bicycle hub according to claim 4, characterized in that: There are two groups of cable ducts, and the two groups of cable ducts are symmetrically arranged.

7. The bicycle hub according to any one of claims 1 to 6, characterized in that: The shell comprises a shell body and a second mounting seat fixed to the end of the shell body. The second mounting seat is pivotally connected to the connecting shaft, and a connecting portion for mounting the magnetic element is provided on the end surface of the second mounting seat close to the shell body.

8. The bicycle hub according to claim 7, characterized in that: The port of the shell body at the end close to the second mounting seat has a bell mouth, and the Hall element is located in the bell mouth.

9. The bicycle hub according to claim 7, characterized in that: The connecting portion is a slot structure, and the magnetic element is embedded in the slot.

10. The bicycle hub according to claim 7, characterized in that: The second mounting seat is threadedly connected to the shell body, and a disassembly hole is provided on the end surface of the second mounting seat away from the shell body.

11. The bicycle hub according to claim 1, characterized in that: A sealing member is provided between the connecting shaft and the housing.

12. A bicycle, comprising a hub, characterized in that: The hub is the bicycle hub according to any one of claims 1 to 11.

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