TW201804158A - Improved driving method for wheel speed sensor which comprises a hub tube of a motorcycle front wheel, a driven unit, an odometer gear casing, and a wheel speed sensing unit - Google Patents

Abstract

The present invention relates to an improved driving method of a wheel speed sensor, which comprises a hub tube of a motorcycle front wheel, a driven unit, an odometer gear casing, and a wheel speed sensing unit. The driven unit is mounted to a central tube of the odometer gear casing and is positioned by a C-clip. The driven unit is made up of a driven gear and a sleeve assembly having a plurality of lugs. The lugs of the sleeve assembly have radial and axial ends that are in the form of a circular arc terminal. Formed on an inner surface of a terminal opening of the hub tube of the motorcycle front wheel are a number of driving blocks that can be divided by the number of the lugs of the sleeve assembly. An edge of the tube opening of the wheel hub tube and ends of the driving blocks are both in the form of a circular arc terminal. The driven gear and the plurality of lugs thereof are both made of reinforced plastic materials so that the lugs are slightly elastic and thus, in mounting the odometer gear casing to the wheel hub tube end, the driving blocks on the inside surface of the end opening of the wheel hub tube can be arbitrarily aligned with and fit into grooves corresponding to the plurality of lugs at an outer edge of one end of the driven gear. To assemble the two, due to the slight elasticity of the lugs, even the two are set in interference with each other. By means of the circular arc terminals of the arbitrary lugs that are in contact with the driving blocks and the circular arc terminal of the shaped opening of the wheel hub tube, the lugs may smoothly slide and rotate to align with the driving blocks inside the wheel hub tube, whereby an assembling operator can smoothly install the driven gear or an ABS magnetic sector element on a concentric positioning site of the wheel hub tube without actually seeing and alignment.

Description

Improved driving method of wheel speed sensor

The invention relates to an improvement of a driving method of a wheel speed sensor, in particular to an outer edge of one end of a driven gear of a driven unit arranged on a shaft tube in a gear case of a horse watch, and formed with a plurality of hemispherical ear pieces And the inner edge of the end hole of the hub axle tube of the front wheel of the locomotive is provided with a plurality of driving blocks which can be divided evenly by the number of lugs provided by the driven gear, and the end edges of the hub axle tube nozzle and the ends of the driving blocks are both It is an arc end, and because the driven gear and its multiple ears are made of reinforced plastic, these ears are slightly elastic, so when the horse watch gear housing is assembled on the hub shaft tube end, The drive block of the inner edge of the hub shaft tube end hole can be arbitrarily aligned with the groove corresponding to the plurality of ears embedded in the outer edge of one end of the driven gear, so that the assembler can smoothly drive the driven gear or ABS without visual alignment. The magnetic zone element is installed at the concentric positioning of the hub axle tube.

According to the figure, the driving structure of the conventional wheel speed sensor is shown in the fourth figure, which is mainly connected to the end of the axle tube (41) of the front wheel hub (4) of the locomotive, and is provided with a set of driving ears (42). The assembly must be located on the horse watch gear housing (5) where the front fork of the locomotive does not rotate with the wheel hub (4). A driven unit (52) is set at the bottom bracket tube (51) inside the horse watch gear housing (5). The front section of the driven unit (52) has a tooth pattern (521), and the other section is formed with a driving ring (522) with a set of lugs (523) on the outer edge, and the driven unit (52) uses a The C-shaped buckle (53) is positioned on the middle shaft tube (51) of the watch gear housing (5), and on one side of the aforementioned watch gear housing (5), a wheel speed sensing unit (54) is provided. The induction unit (54) includes a speed output gear (541) driven by a toothed pattern (521) at the front section of the driven unit (52), a magnetic zone element (542) rotating synchronously with the speed output gear (541), and a connection. Have The sensing element (55) of the signal line (551), when the locomotive travels, the front wheel drives the axle tube (41) of the hub (4), and the set of driving ears (42) provided at the end of the axle tube (41) drives The lug piece (523) on the periphery of the driving ring member (522) rotates the driving ring member (522), and simultaneously drives the front section with the tooth pattern (521) to rotate as a whole, and then drives the horse watch gear housing (5). The speed output gear (541) and the magnetic field element (542) are rotated, and the magnetic field on the magnetic field element (542) is sensed by the induction element (55) provided on the magnetic field element (542) side, and The data is transmitted from the signal line (551) to the electronic horse watch for the purpose of displaying speed and mileage.

In addition, another structure used for ABS signal or electronic horse watch signal induction, as shown in the fifth figure, is mainly the toothed pattern (521) in the previous section of the structure shown in the fourth figure with a magnetic field element (57 ) Instead, the magnetic zone element (57) is assembled on the sleeve (542) formed by the drive ring (522), and is directly on the wheel speed sensor housing (5 ') and the magnetic zone element (57). Correspondingly, an inductive element (55) connected with a signal line (551) is set, and the magnetic field on the magnetic field element (57) is induced by the inductive element (55), and the data is transmitted from the signal line (551) to Electronic horse watch and ABS signal induction or electronic horse watch signal induction to display speed and mileage.

However, the conventional structure has the following disadvantages:

1. Interference will be caused to cause abnormal operation or unable to drive: Because the driven unit (52) is installed in the watch gear housing (5), the drive ring (522) cannot be seen when it is assembled on the assembly line or maintenance plant. ) Whether the peripheral lugs (523) on the periphery of the drive tube (41) on the shaft tube (41) are aligned with the driving lugs (421) on the shaft tube (41). 523) The drive ear grooves (421) between the set of drive ears (42) on the shaft tube (41) are misaligned and completely inserted, and mutual interference is not found. At this time, the wheel shaft fixing screw (56) is tightened again. At this time, the lugs (523) on the periphery of the driving ring (522) will be damaged or broken by the group of driving lugs (42) on the shaft tube (41), which will cause the tire to run smoothly and may cause The moving unit (52) cannot accurately drive the wheel speed sensing unit (54) or is stuck and cannot be used.

2. Used for ABS signal or electronic horse watch signal cannot be read accurately, resulting in ABS brake malfunction or horse watch data display abnormality: This conventional design, because of the need to leave a gap for assembly so that during installation, because the assembler cannot visually align Whether the lugs (523) on the periphery of the drive ring (522) are correctly aligned with the drive ear grooves (421) between the set of drive ears (42) on the shaft tube (41) depends on the feeling of the assembler. Align the two, so a large gap of the drive ear groove (421) needs to be reserved for easy installation.

This design will not cause problems in the early use of mechanical horse watches, but nowadays, a large number of electronic horse watches have been used, or the ABS anti-lock brake system has been used, and the conventional design is used in the wheel speed sensing of today's cars. When the vehicle is starting or braking, the drive ring (522) and the magnetic field element (57) (ABS coded magnetic coil) will cause the inertia on the shaft tube (41) due to the installation clearance. There is a large gap between the driving ears (42) of the driving ear grooves (421), and the signal can increase or decrease or delay due to free rotation or bounce in the gap range, which causes the horse watch to display abnormally and the ABS brake to malfunction, and uses the driving ring (522 ) When the center hole is the center of rotation, after a long period of time, the radial clearance between the center hole and the shaft tube (51 ') of the wheel speed sensor housing (5') becomes larger, and the error becomes more obvious. The problem of poor ABS brake signals will also occur.

<Technical problem to be solved> In view of the practical difficulties and the lack of improvement of the conventional wheel speed sensor driving structure, the inventor hopes to provide a breakthrough design to improve the practical effect. The design group system integrates its many years of professional technical knowledge and practical experience in designing, manufacturing, and selling related products, as well as the results obtained from research and design, and finally develops an improvement of a wheel speed sensor driving method of the present invention to provide users.

<Technical means for solving the problem> The present invention relates to an improvement of a driving method of a wheel speed sensor, which includes a front wheel hub axle tube of a locomotive, a driven unit, a horse gear housing, and a wheel speed sensing unit. The driven unit is an assembly It is positioned on the shaft tube of the gear case of the watch, and is positioned by a C-shaped buckle. The driven unit is composed of the driven gear and a sleeve assembly with a plurality of ear pieces. The ear pieces of the sleeve component are radially connected to the shaft. The end is a circular arc end, and at the inner edge of the end hole of the front wheel hub axle tube of the locomotive, there are provided several driving blocks that can divide the number of lugs provided by the quilt assembly, and the end edge of the hub axle tube nozzle and the The ends of these driving blocks are arc-shaped ends, and because the driven unit is made of reinforced plastic, these ears are slightly elastic, and the horse watch gear casing is assembled to the hub by locking the wheel shaft fixing screws. At the end of the shaft tube, the arc end of the driving block end of the inner edge of the hub shaft tube end hole can be arbitrarily and quickly aligned in the groove corresponding to the ear piece provided in the sleeve assembly. When the two are assembled with each other, The ears of the sleeve assembly are slightly elastic, even if the two are mutually According to the design, the arc-shaped ends set at the contact ends of the driving blocks and the ends of any ear pieces, and the arc-shaped ends are also formed at the mouth of the hub shaft tube, so that the ear pieces of the sleeve assembly can smoothly slide. The rotation is aligned with the driving block in the hub shaft tube, so that the assembly staff can smoothly install the driven gear or ABS magnetic field component at the concentric positioning of the hub shaft tube without visual alignment.

〈Contrast with the effect of the prior art〉 The main purpose of the present invention is to make the ears by the arc-shaped ends provided at the contact ends of the driving blocks and the ends of any ear pieces, and the arc-shaped ends formed at the openings of the hub shaft tubes. The plate can smoothly rotate and align with the drive block in the hub axle tube, so that the assembly staff can smoothly install the driven gear or ABS magnetic zone component at the concentric positioning of the hub axle tube without visual alignment, so that the wheel speed and ABS code The magnetic disc rotates concentrically with the shaft tube to achieve the purpose of ensuring the wheel speed signal and facilitating disassembly.

The second purpose of the present invention is to design this design so that there is no problem of contact wear between the center hole of the driven gear and the middle shaft tube in the horse watch gear housing after the hub shaft tube is installed, and the ABS magnetic zone element and the hub shaft tube rotate concentrically and synchronously. In order to achieve the purpose of signal and easy disassembly.

In order to make the reviewers of the Guigui better understand the structural features and effects of the present invention, the drawings are described in detail below.

Please refer to the first figure. The present invention relates to an improvement of a wheel speed sensor driving method, which includes a front axle hub axle tube (1) of a locomotive, a driven unit (2), a horse gear housing (3), and a wheel speed. The induction unit (32), the driven unit (2) is set on the shaft tube (31) of the horse gear housing (3), and is positioned by a C-shaped retaining ring (311). The driven unit (2) ) Consists of a driven gear (21) and a sleeve assembly (22) with a plurality of ears (221). The ears (221) of the sleeve assembly (22) are arced radially and axially. End (222), and at the inner edge of the end hole of the front wheel hub axle tube (1) of the locomotive, a plurality of driving blocks (12) which are divisible by the number of lugs (221) provided by the quilt assembly (22), and the wheel hub The ends of the shaft tube (1) and the ends of the driving blocks (12) are arc ends (11) (121), and because the driven unit (2) is made of reinforced plastic as a whole, Make the ear pieces (221) of the sleeve assembly (22) slightly Elasticity, so that when the wheel shaft fixing screw (35) is tightened to assemble the watch gear housing (3) on the end of the hub shaft tube (1), the end of the drive block (12) on the inner edge of the end hole of the hub shaft tube (1) The arc-shaped end (121) can be quickly and arbitrarily aligned with the groove (223) corresponding to the ear piece (221) provided in the insert sleeve assembly (22). When the two are assembled with each other, the sleeve assembly (22) should These ear pieces (221) are slightly elastic, even if the two interfere with each other, the arc ends (121) (222) provided by the contact ends of the driving blocks (12) and the ends of any ear pieces (221), And the design of the arc end (11) is also formed at the mouth of the hub axle tube (1), so that the lugs (221) of the sleeve assembly (22) can smoothly slide and rotate with the drive in the hub axle tube (1). The blocks (12) are aligned so that the assembler can smoothly install the driven gear (21) or the ABS magnetic field element on the concentric positioning of the hub shaft tube (1) without visual alignment.

When the locomotive travels, the front wheel drives the hub axle tube (1) to rotate, and rotates the sleeve assembly (22) and the driven gear (21), and then drives the speed output gear (321) provided on the watch gear housing (3). ) And the magnetic zone element (322) rotate, and the magnetic zone change on the magnetic zone element (322) is induced by an induction element (33) located on the side of the magnetic zone element (322) on the gear case (3) of the watch. , And transfer the data from the signal line (34) to the electronic horse watch to achieve the purpose of displaying speed and mileage.

Please refer to the second figure, which is the second embodiment of the present invention. This embodiment can be applied to display speed and mileage, and can be used to interpret wheel speed data of an ABS brake anti-lock computer. The driven gear (21) in the figure is replaced by a magnetic zone element (211) with a plurality of magnetic zones. The magnetic zone element (211) is arranged in the shaft tube (31 ') of the wheel speed sensor housing (3'). ), And is positioned with a C-shaped buckle (311), and the magnetic field element is induced by an induction element (33) located on the magnetic field element (211) side of the wheel speed sensor housing (3 '). The magnetic field on (211) changes, and the data is transmitted from the signal line (34) to the electronic horse watch or ABS anti-lock computer, and the speed and mileage can be displayed or the ABS anti-lock computer can judge the wheel more accurately. The purpose of speed.

Please refer to the third figure again, which is the third embodiment of the present invention. This embodiment can be applied to display the speed and mileage, and can be used to interpret the wheel speed data of the ABS brake anti-lock computer, which includes the front wheel hub of the locomotive. Axle tube (1), driven unit (2), wheel speed sensor housing (3 ') and sensing element (33), the driven unit (2) is set in the wheel speed sensor housing (3'). The central axis tube (31 ') is positioned by a C-shaped retaining ring (311). The driven unit (2) is composed of a magnetic field element (211) and a sleeve assembly (23) with a plurality of ears (231). The axial cross-section of the ear pieces (231) has a proper arc shape, so that the ear pieces (231) have radial elasticity, and the radial and axial ends of the ear pieces (231) are round. The arc end (232) is provided at the inner edge of the end hole of the front wheel hub axle tube (1) of the locomotive, and a driving ear groove (13) that is equal to or different from the number of ear pieces (231) of the sleeve assembly (23) and can be assembled and matched is provided. , The shape of the inner holes of the driving ear grooves (13) and the ears The outermost edges of the blades (231) have the same shape in the radial direction so that the two can be fitted without gaps. The entrance ends of the driving ear grooves (13) are provided with a circular concave arc portion (131) to facilitate the assembly of the sleeve assembly ( 23) The ear piece (231) can be quickly and correctly slid into the driving ear groove (13) of the end hole of the hub shaft tube (1) without the need for the visual alignment of the assembler during the assembly process. When the assembly is completed, the two can be closely fitted to each other. And because of the elasticity of the axial arc section of the ear piece (231), the function of automatic centering is achieved. After the hub shaft tube (1) is opened, it is concentrically fitted with the hub shaft tube (1), and the driven unit (2) ) There is no problem of contact wear between the center hole and the middle shaft tube (31 ') in the wheel speed sensor housing (3'), and as the ABS-coded magnetic zone element (211) rotates concentrically with the hub shaft tube (1) In order to achieve the purpose of signal and easy disassembly.

When the locomotive travels, the front wheel drives the hub axle tube (1) to rotate, and the sleeve assembly (23) and the magnetic field element (211) are rotated, and the magnetic field element is provided on the wheel speed sensor housing (3 '). (211) one side of the sensing element (33) senses the change of the magnetic field on the magnetic field element (211), and transmits the data from the signal line (34) to the electronic horse watch or ABS brake anti-lock computer to achieve the display speed And mileage or ABS computer for more accurate determination of wheel speed.

In summary, the present invention provides the purpose of realizing signals and facilitating disassembly, and enables the driven gear or magnetic zone element center hole installed in the hub axle tube and the inner shaft of the horse gear housing or wheel speed sensor housing. There is no problem of contact wear between the tubes, and the driven gear or ABS magnetic zone component rotates concentrically with the hub shaft tube, so as to achieve the effect of signals and easy disassembly, which is very novel, progressive and available for industry. The application of the invention has already met the requirements for granting an invention patent, and the patent application was filed in accordance with the law. It is still a matter of decency that the examiner will examine it in detail and grant the patent in this case at an early date.

The above is only one of the preferred embodiments of the present invention. When the scope of the present invention cannot be limited by it, all equal changes and modifications made in accordance with the scope of the patent application for the present invention should still belong to the invention patent. Covered.

(1) ‧‧‧ Hub shaft tube (11) (121) (222) (232) ‧ ‧ Arc end (12) ‧ ‧ Drive block (13) (421) ‧ ‧ Drive ear groove (131) ‧‧‧Concave arc (2) (52) ‧‧‧ Driven unit (21) ‧ ‧ Driven gear (211) (322) (542) (57) ‧ ‧ Magnetic element (22) ( 23) ‧‧‧ sets of components (221) (231) ‧ ‧ ears (223) ‧ ‧ groove (3) (5) ‧ ‧ watch gear housing (3 ') (5') ‧ ‧ ‧ Wheel speed sensor housing (31) (31 ') (51) (51') ‧‧‧ Axle tube (311) (53) ‧‧‧ Type C buckle (32) (54) ‧‧‧ Wheel speed sensing unit (321) (541) ‧‧‧speed output gear (33) (55) ‧‧‧ sensor element (34) (551) ‧ ‧ signal cable (35) (56) ‧ ‧ fixing screw (4) ‧ ‧ ‧Wheel (41) ‧‧‧Shaft tube (4 (524) ‧‧‧ kit section) ‧‧‧ drive ear (521) ‧‧‧ serration (522) ‧‧‧ drive ring member (523) ‧‧‧ projecting tab

The first figure is an exploded perspective view of a preferred embodiment of the present invention. The second figure is an exploded perspective view of a second embodiment of the present invention. The third figure is an exploded perspective view of a third embodiment of the present invention. The fourth figure is an exploded perspective view of a conventional structure. The fifth figure is an exploded perspective view of another conventional structure.

(1) ‧‧‧Wheel hub tube

(11) (121) (222) ‧‧‧Circular end

(12) ‧‧‧Driver

(2) ‧‧‧ driven unit

(21) ‧‧‧Driven Gear

(322) ‧‧‧Magnetic Zone Element

(22) ‧‧‧set of components

(221) ‧‧‧ear

(223) ‧‧‧Groove

(3) ‧‧‧horse gear case

(31) ‧‧‧Bottom tube

(311) ‧‧‧C-shaped buckle

(32) ‧‧‧Wheel speed sensor

(321) ‧‧‧speed output gear

(33) ‧‧‧Sensor

(34) ‧‧‧Signal line

(35) ‧‧‧Fixed screws

Claims (10)

An improvement of a driving method of a wheel speed sensor includes a front wheel hub axle tube of a locomotive, a driven unit, a horse watch gear housing, and a wheel speed sensing unit. The main features are as follows: The driven unit is arranged in a horse watch gear housing. On the axle tube, the driven unit is composed of a driven gear and a sleeve assembly with a plurality of ears. The ears of the sleeve assembly are arc-shaped at the radial and axial ends, and are connected to the axle tube of the front wheel hub of the locomotive. The inner edge of the end hole is provided with a plurality of driving blocks that can divide the number of ears provided by the cover assembly, and the end edges of the hub shaft tube nozzles and the ends of the driving blocks are rounded ends, so that When the gear housing is assembled on the hub shaft tube end, the arc end of the drive block end of the inner edge of the hub shaft tube end hole can be arbitrarily and quickly aligned in the groove corresponding to the ear piece provided in the sleeve assembly, so as to assemble Without visual alignment, the driven gear can be smoothly installed at the concentric positioning of the hub shaft tube. For example, the improvement of the driving method of the wheel speed sensor described in item 1 of the scope of the patent application, wherein the driven unit is made of reinforced plastic, and the ears of the sleeve assembly are slightly elastic. When the sleeve assembly and the hub axle tube are two When they are assembled with each other, the ears of the sleeve assembly are slightly elastic, even if the ears of the sleeve assembly and the driving block at the inner edge of the end hole of the hub shaft tube interfere with each other. The arc-shaped end set at the end of the ear piece and the arc-shaped end design is also formed at the mouth of the hub shaft tube, so that the ear pieces of the sleeve assembly can smoothly rotate and align with the driving block inside the hub shaft tube. For example, the improvement of the driving method of the wheel speed sensor described in item 1 of the scope of the patent application, wherein the wheel speed sensing unit is provided on the gear case of a horse watch, and the wheel speed sensing unit includes a speed output gear and a magnetic zone element, and A sensor element with a signal line is located on the side of the magnetic gear element on the case of the watch gear. When the locomotive travels, the front wheel drives the hub axle tube to rotate, and the sleeve assembly and the driven gear are rotated, and then the watch gear gear is driven. The rotating speed output gear and magnetic zone element rotate, and the magnetic zone change on the magnetic zone element is sensed by the induction element located on the side of the magnetic zone element on the gear case of the horse watch, and the data is transmitted from the signal line to the electronic horse. Table, and the purpose of displaying speed and mileage. According to the improvement of the driving method of the wheel speed sensor as described in the first item of the scope of the patent application, the driven unit is positioned on the shaft tube in the gear case of the watch with a C-shaped retaining ring. An improvement of a wheel speed sensor driving method includes a front wheel hub axle tube of a locomotive, a driven unit, a wheel speed sensor housing, and an induction element. The main features are: The driven unit is arranged in the wheel speed sensor housing. On the bottom bracket tube, the driven unit is composed of a magnetic field element with a plurality of magnetic regions and a sleeve assembly with a plurality of ears. The ears of the sleeve assembly have circular and radial ends, and The inner edge of the end hole of the hub axle tube of the front wheel of the locomotive is provided with several driving blocks that can be divided evenly by the number of lugs provided by the cover assembly, and the end edges of the hub axle tube nozzles and the ends of the driving blocks are arc ends Then, when the wheel speed sensor housing is assembled on the hub shaft tube end, the arc end of the driving block end of the inner edge of the hub shaft tube end hole can be formed to arbitrarily and quickly align with the corresponding ear piece provided in the insert sleeve assembly. In the groove, the magnetic zone element can be smoothly installed at the concentric positioning of the hub axle tube without visual alignment during assembly. When the locomotive travels and the front wheel drives the hub axle tube to rotate, the sleeve assembly and the magnetic zone element are rotated. And by the wheel speed sensor housing The sensing element senses the change in the magnetic field on the magnetic field element, and transmits the data from the signal line to the electronic horse watch or ABS brake anti-lock computer, and displays the speed and mileage or accurate ABS reading data. For example, the improvement of the driving method of the wheel speed sensor described in item 5 of the scope of patent application, wherein the driven unit is made of reinforced plastic, so that the ears are slightly elastic. When the sleeve assembly and the hub axle tube are mutually During assembly, the ears of the sleeve assembly are slightly elastic, even if the ears of the sleeve assembly and the driving block on the inner edge of the end hole of the hub shaft tube interfere with each other, the contact end of the driving block and the end of any ear The arc-shaped end and the arc-shaped end are also formed at the mouth of the hub shaft tube, so that the ears of the sleeve assembly can smoothly rotate and align with the drive block inside the hub shaft tube. According to the improvement of the driving method of the wheel speed sensor described in item 5 of the patent application scope, wherein the driven unit is positioned on a shaft tube in the wheel speed sensor housing by a C-shaped retaining ring. An improvement of a wheel speed sensor driving method includes a front wheel hub axle tube of a locomotive, a driven unit, a wheel speed sensor housing, and an induction unit. The main features are: The driven unit is arranged in the wheel speed sensor housing. On the central axis tube, the driven unit is composed of a magnetic zone element and a sleeve assembly with a plurality of ear pieces. The axial cross-section of the ear pieces is an appropriate arc shape, so that the ear pieces have radial elasticity. The radial and axial ends of the ear piece are arc-shaped ends, and are provided on the inner edge of the end hole of the front wheel hub axle tube of the locomotive with a number of or equal to the number of ear pieces of the sleeve assembly and can be assembled with the ear pieces of the sleeve assembly. Ear grooves, the shape of the inner holes of these ear grooves is the same as the shape of the outermost edge of the ear piece in the radial direction so that the two can be fitted without gaps. The entrance ends of these drive ear grooves are provided with circular concave arc portions to facilitate assembly. During assembly, the ears of the sleeve assembly need not be visually aligned by the assembler to quickly and correctly slide into the driving ear grooves of the end holes of the hub shaft tube. When the assembly is completed, the two can be closely fitted to each other, and the ear pieces of the sleeve assembly The surface is in the shape of an axial arc and has elasticity. The function of dynamic alignment sliding into the driving ear groove of the end hole of the hub shaft tube is fitted into the hub shaft tube opening concentrically with the hub shaft tube. There is no gap between the center hole of the driven unit and the middle shaft tube in the wheel speed sensor housing. The problem of contact abrasion, and the magnetic zone element as the ABS code rotates concentrically with the hub axle tube, so as to achieve the purpose of the wheel speed signal and the convenience of disassembly. For example, the improvement of the driving method of the wheel speed sensor described in item 8 of the scope of the patent application, wherein a sensor element is provided on the wheel speed sensor housing, and when the locomotive travels, the front wheel drives the hub axle tube to rotate, and the sleeve assembly and the The magnetic field element rotates, the magnetic field change on the magnetic field element is sensed by the induction element, and the data is transmitted from the signal line to the ABS brake anti-lock computer to obtain accurate ABS interpretation data. For example, the improvement of the driving method of the wheel speed sensor described in item 8 of the scope of the patent application, wherein the driven unit is positioned on a shaft tube in the wheel speed sensor housing by a C-shaped retaining ring.