A hub cap structure
By combining a pulse unit with a Hall sensor on the inside of the hub cover, the problem of difficult installation of Hall sensors in drum brake structures is solved, achieving accurate speed calculation and improved stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG KANGLI METAL PROD CO LTD
- Filing Date
- 2025-09-30
- Publication Date
- 2026-07-14
AI Technical Summary
In the existing technology, Hall sensors are difficult to install in drum brake structures, cannot effectively utilize the space inside the hub cover, and affect the normal operation of drum brakes and speed counting structures.
Design a hub cover structure with a pulse section and a Hall sensor on the inner side. Magnets are evenly distributed on the pulse section. The Hall sensor senses changes in the magnetic field and calculates the rotation speed. It is connected to the hub through a linear bearing to ensure synchronous rotation. The Hall sensor is fixed through a threaded hole to improve stability.
By effectively utilizing the space inside the hubcap, accurate calculation of rotational speed is achieved without affecting the usable space of the drum brake structure, thus improving the installation stability and counting accuracy of the Hall sensor.
Smart Images
Figure CN224490506U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of hubcap technology, and in particular to a hubcap structure. Background Technology
[0002] In vehicle wheel hub systems, the hubcap needs to be used in conjunction with a drum brake structure (for braking function) and a speed counting structure (such as a Hall sensor assembly to monitor speed). In the prior art, drum brakes are fixed to the hubcap or the wheel hub body. The counting structure, especially the Hall sensor-based counting structure, is often used in disc brake structures due to its structural characteristics. The brake drum of a drum brake is usually enclosed inside the hubcap, and space needs to be reserved inside for brake shoe opening and closing and heat dissipation. This limits the conditions available for installing a Hall sensor inside the hubcap. Therefore, how to solve the above problems is the purpose of this application.
[0003] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is the closest prior art to this application. Summary of the Invention
[0004] Based on this, this application provides a hubcap structure to solve one of the aforementioned technical problems.
[0005] The technical solution adopted by this application to solve its technical problem is a hubcap structure, including: a hubcap; a drum brake structure disposed on one side of the hubcap; and a counting structure including a pulse unit and a Hall sensor. The pulse unit is rotatably disposed at the inner center of the hubcap and can rotate synchronously with the hub. The pulse unit is provided with a plurality of evenly distributed magnets. The Hall sensor is fixedly disposed on the hubcap, and its sensing surface faces the outer periphery of the magnets. When the pulse unit rotates, the change in the magnetic field caused by the magnets can cause the Hall sensor to emit a pulse signal, thereby calculating the rotational speed of the hub.
[0006] In some embodiments, the pulse unit has a connection hole, and six slots are arrayed on one side of the connection hole. Each slot contains a magnet, and the Hall sensor faces the magnet and can receive the pulse signal emitted by the magnet.
[0007] In some embodiments, a linear bearing is fixedly provided at the center of the hub cover, and the linear bearing passes through the connecting hole to realize the rotational connection between the pulse unit and the hub cover.
[0008] In some embodiments, the pulse section is configured as a stepped cylinder, with one end for mounting a magnet and the other end for connecting to the hub shaft.
[0009] In some embodiments, an insertion portion is provided on the outer side of the hub cover, and the Hall sensor is fixedly disposed on the insertion portion.
[0010] In some embodiments, a threaded hole is provided on one side of the insertion part, and an abutment plate is provided on the Hall sensor. A through hole is provided on the abutment plate, and a fastening screw passes through the through hole and the threaded hole in sequence to fix the Hall sensor on the insertion part.
[0011] The beneficial effects of this application are as follows: when the wheel hub rotates, the pulse unit located in the center can be driven to rotate by the wheel hub. The magnet on the pulse unit can cause the Hall sensor to emit pulse signals when rotating, and the Hall sensor can calculate the number of pulses. The counting structure is directly installed on the inner side of the wheel hub cover, which does not affect the usable space of the drum brake structure and effectively utilizes the central area of the wheel hub cover. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a three-dimensional structural diagram of this application.
[0014] Figure 2 This is a schematic diagram of the internal installation structure of this application.
[0015] Figure 3 This is a schematic diagram of the exploded structure of this application.
[0016] Figure 4 This is a schematic diagram of the counting structure of this application.
[0017] Explanation of reference numerals in the attached diagram: 1. Hub cover; 11. Insertion part; 111. Threaded hole; 12. Linear bearing; 2. Drum brake structure; 21. Brake shoe; 22. Tension spring; 23. Locating pin; 24. Drive shaft; 3. Counting structure; 31. Pulse part; 311. Connecting hole; 312. Slot; 313. Magnet; 314. Lug; 32. Hall sensor; 321. Abutment plate; 3211. Through hole. Detailed Implementation
[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. In addition, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those of ordinary skill in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection of this application.
[0019] In the embodiments of this application, please refer to Figure 1-4 As shown, this application provides a hubcap structure, mainly including: a hubcap 1; a drum brake structure 2, disposed on one side of the hubcap 1; and a counting structure 3, disposed on the hubcap 1, including a pulse unit 31 and a Hall sensor 32. The pulse unit 31 is rotatably disposed at the inner center of the hubcap 1 and can rotate synchronously with the hub. The pulse unit 31 is provided with a plurality of evenly distributed magnets 313. The Hall sensor 32 is fixedly disposed on the hubcap 1, and its sensing surface faces the outer periphery of the magnets 313. When the pulse unit 31 rotates, the magnetic field change caused by the magnets 313 can cause the Hall sensor 32 to emit a pulse signal, thereby calculating the rotational speed of the hub.
[0020] Specifically, with each rotation of the wheel hub, the wheel hub will drive the pulse unit 31 to rotate synchronously. For each rotation of the magnet 313 on the pulse unit 31, the Hall sensor 32 will emit a number of pulses corresponding to the number of magnets 313. By collecting and calculating the number of pulses, the rotation speed of the wheel hub can be obtained, and the number of rotations can be converted into the travel distance according to the diameter of the wheel.
[0021] For illustration, the drum brake structure 2 includes brake shoes 21, brake drum, tension spring 22, locating pin 23, and drive shaft 24. Its working principle is well-known technology, so it will not be described in detail.
[0022] The following will continue to describe some preferred / improved embodiments based on the above embodiments. Any one of the following embodiments can be selected, or multiple embodiments can be combined.
[0023] Specifically, the pulse unit 31 has a connection hole 311, and six slots 312 are arrayed on one side of the connection hole 311. Each slot 312 is equipped with a magnet 313. The Hall sensor 32 faces the magnet 313 and can receive the pulse signal emitted by the magnet 313. When the pulse unit 31 rotates with the wheel, the six magnets 313 pass through the sensing range of the Hall sensor 32 in sequence. Each magnet 313 triggers a pulse signal once, and the signal interval triggered by adjacent magnets 313 corresponds to the time when the pulse unit 31 rotates 60°.
[0024] Reference Figure 3 As shown, a linear bearing 12 is fixedly installed at the center of the hub cover 1. The linear bearing 12 passes through the connecting hole 311 to realize the rotational connection between the pulse unit 31 and the hub cover 1. The linear bearing 12 can prevent the hub cover 1 from rotating synchronously when the hub drives the pulse unit 31 to rotate, and at the same time, it can also ensure that the rotation of the pulse unit 31 will not affect the normal rotation of the hub.
[0025] Reference Figure 4 As shown, the pulse unit 31 is configured as a stepped cylinder, with a magnet 313 at one end and two lugs 314 at the other end for connection with the hub shaft. The stepped cylindrical structure makes the center of gravity of the pulse unit 31 closer to the shaft, reducing the centrifugal force shift during high-speed rotation. The lugs 314 facilitate the hub to drive the pulse unit 31 to rotate.
[0026] Preferably, in order to facilitate the maintenance of the Hall sensor 32, an insertion part 11 is provided on the outer side of the hub cover 1, and the Hall sensor 32 is fixedly mounted on the insertion part 11.
[0027] Reference Figure 1 As shown, a threaded hole 111 is provided on one side of the insertion part 11, and an abutment plate 321 is provided on the Hall sensor 32. A through hole 3211 is provided on the abutment plate 321. The fastening screw passes through the through hole 3211 and the threaded hole 111 on the abutment plate 321 in sequence to fix the Hall sensor 32 on the insertion part 11. The screw fastening method can withstand greater vibration and impact, ensuring the stability of the Hall sensor 32 during use.
[0028] The various embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.
[0029] Finally, it should be noted that the above description is only a preferred embodiment of this application. The foregoing embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A hubcap structure, characterized in that, include: Hub cover; A drum brake structure is provided on one side of the hub cover; A counting structure, mounted on a hubcap, includes a pulse unit and a Hall sensor. The pulse unit is rotatably mounted on the inner center of the hubcap and can rotate synchronously with the hub. The pulse unit has several evenly distributed magnets. The Hall sensor is fixedly mounted on the hubcap with its sensing surface facing the outer periphery of the magnets. When the pulse unit rotates, the change in the magnetic field caused by the magnets causes the Hall sensor to emit a pulse signal, thereby calculating the hub's rotational speed.
2. The hubcap structure according to claim 1, characterized in that, The pulse unit has a connection hole, and six slots are arrayed on one side of the connection hole. Each slot contains a magnet, and the Hall sensor faces the magnet and can receive the pulse signal emitted by the magnet.
3. The hubcap structure according to claim 2, characterized in that, A linear bearing is fixedly installed at the center of the hub cover, and the linear bearing passes through the connecting hole to realize the rotational connection between the pulse unit and the hub cover.
4. A hubcap structure according to claim 2, characterized in that, The pulse section is designed as a stepped cylinder, with a magnet at one end and two lugs at the other end for connection with the hub shaft.
5. A hubcap structure according to claim 1, characterized in that, An insertion part is provided on the outer side of the hub cover, and the Hall sensor is fixedly installed on the insertion part.
6. A hubcap structure according to claim 5, characterized in that, A threaded hole is provided on one side of the insertion part, and an abutment plate is provided on the Hall sensor. A through hole is opened on the abutment plate, and a fastening screw passes through the through hole and the threaded hole in sequence to fix the Hall sensor on the insertion part.