KR100540084B1 - Manufacturing method of sensor-ring for anti-lock braking system - Google Patents

Abstract

The present invention relates to a method for manufacturing an automotive ABS sensor ring, and more particularly, to prepare a sensor detecting member by blanking the steel plate of the plate material into a donut shape so as to have a constant cross-sectional width between a predetermined inner diameter and an outer diameter; A sensor sensing hole processing step of penetrating the entire sensor sensing hole at equal intervals through a press cutting operation on a surface between the prepared inner and outer diameters of the sensor sensing member; A fitting member processing step of performing welding by rolling a strip-shaped steel sheet having a predetermined width into a ring shape so as to have a predetermined inner diameter and a mounting surface that can be fitted to a wheel hub or a wheel drum of a vehicle to be mounted; A sensoring completion step of welding the contact portion after the fitting fitting member faces at right angles to maintain the same central axis on the inner peripheral edge of one side of the sensor sensing member on which the sensor sensing hole is processed; It relates to a manufacturing method of the sensor ring for automobile ABS consisting of; a finishing step of performing a grinding process, rust prevention and surface treatment to prevent rust and improve the marketability of the finished sensor ring.

Sensor ring, ABS, sensor detecting hole, fitting member, sensor detecting member

Description

Manufacturing method of Sensor-ring for anti-ABS for automobiles {Manufacturing method of Sensor-ring for Anti-lock Braking System}

1 and 2 are an external perspective view and a front view of the sensor ring for automobile ABS manufactured according to the present invention,

Figure 3 is an exploded state of the vehicle ABS sensor ring manufactured according to the present invention,

Figure 4 is a bottom perspective view and a partially enlarged view of the sensor ring for automobile ABS manufactured according to the present invention,

5 and 6 is an embodiment for manufacturing a roll-shaped steel sheet for the fitting member in the sensor ring according to the present invention,

7 is a manufacturing process of the sensor ring for vehicle ABS according to the present invention,

Figure 8 is an illustration of the mounting state of the ABS sensor ring in accordance with the present invention.

※ Brief description of symbols for the main parts of the drawings

10: sensor ring 12: sensor detection hole

14: sensor detecting surface 15: sensor detecting member

20: fitting mounting member 22: mounting surface

25: Chamfer portion r: inner diameter

R: outer diameter s: weld

The present invention relates to a method of manufacturing a sensor ring for automobile ABS, and more particularly, to a sensor ring manufacturing method of a novel shape provided to detect the number of revolutions of the wheel in the ABS system of the automobile braking device. The present invention relates to a manufacturing method of sensor rings for automobile ABS that can improve the actual vehicle mounting performance, workability and productivity of various vehicles, and reduce manufacturing costs.

As automobile-related technologies have developed and the driver's safety awareness has been raised, various safety technologies have been developed and applied to actual vehicles to secure the safety of passengers who drive the vehicle even when driving.

Among them, a braking system used to safely stop a vehicle to cope with an emergency situation while driving a vehicle is one of the most important safety devices responsible for the safety of the vehicle occupants. The braking system of the vehicle allows the pedaling force to generate friction on the disc wheels or drums of the rotating wheels through the hydraulic system when the driver presses the brake pedal while driving, thereby reducing or stopping the rotational speed of the wheels.

However, since such a conventional braking system operates in response to the driver's pedaling speed regardless of the speed of the vehicle being driven, when the brake pedal is strongly pressed to stop the vehicle driving at high speed, the generated braking force is the rotational speed of the wheel. Can be reduced or stopped, but a car in progress at a constant speed causes a safety accident due to loss of steering ability of the vehicle due to the inversion of the vehicle or the slippage of the wheels that stopped turning due to the inertia force to continue to go straight. These accidents were not only accidental, but the occurrence of safety accidents often resulted in irreversible losses due to one carelessness as well as enormous material accidents.

ABS (Antilock Braking System) is a technology developed to prevent safety accidents that may occur during braking of a vehicle in driving. The ABS device detects the number of revolutions of the wheel that is reduced by the braking force transmitted to the wheel when the driver presses the brake pedal to stop the vehicle while driving, and compares the speed of the vehicle with the appropriate braking force to the wheel in pulse form. By controlling so as to prevent the wheels from locking up, the reduction of the rotational speed of the wheels decreases faster than the driving speed of the vehicle, thereby preventing the wheels from slipping on the road surface, preventing the loss of steering ability due to the sliding of the wheels, and the fall of the driver. This is a very useful braking system that can minimize the occurrence of various safety accidents due to brake operation.

Among the main components constituting the ABS device, the ABS sensor ring to which the present invention belongs is rotated together with the rotating wheel attached to the wheel of the vehicle, and the wheel is rotated by a speed sensor fixed to the vehicle body or axle near the wheel. It is possible to calculate the rotational speed of the wheel accurately by allowing the speed to be sensed, and the ABS sensor ring used in the prior art is formed by forming a gear-shaped sensor sensing unit or a recessed groove on the outer peripheral side of the sphere. Most of the manufacturing methods of the sensor ring were made by the precision processing method using copper tubes and the casting method using small alloys.In recent years, advanced countries have been able to increase the cost, quality and durability of conventional manufacturing methods. In order to overcome the disadvantages such as lowering, increase in weight, there is a trend to change to the press working method.

In the case of manufacturing ABS sensor ring using this press method, despite many advantages such as stable quality, durability, and weight reduction than the prior art, an expensive development cost is required in the process of developing a mold in the early stage, and the manufacturing process There was a rather complicated disadvantage.

In addition, the conventional ABS sensor ring produced by the press manufacturing method is integrated with the sensor detecting portion of the outer peripheral edge of the sensor ring detected by the speed sensor and the fitting portion formed on the inner circumference of the sensor ring coupled to the wheel hub or drum Since the inner diameter of the fitting part coupled to the outer circumference of the wheel hub of the vehicle causes the outer diameter of the outer circumference of the sensor sensing part to be changed, interference with other peripheral devices occurs, so that the inner diameter of the sensor ring can be easily changed. There was a problem that can not be. In particular, since the mounting position of the ABS sensor ring is fixed, many limitations occur in design change of various parts of the vehicle and application of new technology.

The present invention has been made to solve the drawbacks of the ABS sensor ring manufactured by the conventional press production method described above, the present invention is not only low initial development cost but also the production process is simple to secure the productivity and quality stability of the product An object of the present invention is to provide a method for manufacturing a sensor for automotive ABS (ABS).

In particular, the present invention not only makes it easy to change the design of various components or to install new parts, but also interferes with the internal diameter of the fitting part fitted to the hub even if the hub outer diameter of the wheel changes depending on the vehicle. Another object of the present invention is to provide a manufacturing method of the sensor ring for automobile ABS, which can further improve the applicability of the vehicle by allowing modification to be possible within a range that does not occur.

In order to achieve the above object, the manufacturing method of the sensor ring for automobile ABS according to the present invention by blanking the steel plate of the plate material in a donut shape to have a constant cross-sectional width between a predetermined inner diameter and the outer diameter to the sensor detecting member Preparing; A sensor sensing hole processing step of penetrating the entire sensor sensing hole at equal intervals through a press cutting operation on a surface between the prepared inner and outer diameters of the sensor sensing member; A fitting member processing step of performing welding by rolling a strip-shaped steel sheet having a predetermined width into a ring shape so as to have a predetermined inner diameter and a mounting surface that can be fitted to a wheel hub or a wheel drum of a vehicle to be mounted; A sensoring completion step of welding the contact portion after the fitting fitting member faces at right angles to maintain the same central axis on the inner peripheral edge of one side of the sensor sensing member on which the sensor sensing hole is processed; It consists of a sensoring finishing step of performing a grinding process and rust prevention and surface treatment to prevent rust and improve the marketability of the surface of the finished sensor ring.

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Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is an external perspective view of a sensor ring for an automobile ABS manufactured by the manufacturing method according to the present invention, and FIGS. 2 and 3 illustrate the configuration of the sensor ring for the ABS. It is the front view and exploded state figure shown.

As shown in the figure, the sensor ring for automobile ABS manufactured in accordance with the present invention is a plurality of sensor detection holes 12 are circumferentially so that the number of revolutions of the rotating wheel is sensed by a speed sensor mounted fixed to the vehicle body The sensor detecting member 15 and the penetrating and maintaining a predetermined interval in the direction and the fitting mounting member 20 which is fitted to the outer periphery or the inner side of the wheel hub or wheel drum of the vehicle are integrally combined to form a single sensor ring. do.

In more detail, the sensor detecting member 15 does not interfere with other devices and components when the inner surface of the wheel hub or the wheel drum of the vehicle to be mounted by blanking the plate steel into a donut shape. A sensor sensing surface 14 is provided to have a predetermined cross-sectional width between an inner diameter r of an appropriate size and an inner diameter r to an outer diameter R, and the surface of the sensor sensing surface 14 is provided in a circumferential direction. A plurality of sensor detection holes 12 are maintained in a uniform interval is made through a certain shape.

In addition, the fitting mounting member 20 is cut or processed into a ring-shaped hollow steel pipe having an inner diameter of the size that can be fitted to the wheel hub or wheel drum of the vehicle to be mounted to form a predetermined mounting surface 22 or Alternatively, the steel sheet material is blank-processed like a strip having a predetermined width to be rolled and welded to have a predetermined inner diameter and processed into a ring shape.

As shown in FIG. 3, the sensor sensing member 15 and the fitting mounting member 20 configured as described above may have one side of the sensor sensing surface 15 of the sensor sensing member 15 on one side of the fitting mounting member 20. 14) in a state in which the same central axis is maintained in close contact with each other at right angles to each other to perform welding on the contact portions of both members to form one integrated sensor ring 10.

4 is a bottom perspective view in which the sensor detecting member 15 and the fitting mounting member 20 are coupled to each other in a 'b' shape, and a welding portion s welded at a predetermined interval to the contact portions of both members. Is formed to firmly couple both members.

Meanwhile, the configuration of another embodiment in which the fitting member 20 is rolled and welded into a circle having a diameter of a predetermined size by blanking like a band is illustrated in FIGS. 5 and 6. The fitting mounting member 20, which is blanked like a belt, is machined with a chamfered part 24 having a polished surface so as not to be sharpened at one edge portion in contact with the sensor sensing member 15, thereby fitting with the sensor sensing member 15. To facilitate welding between the mounting members 20, the chamfer 24 'having an inclined cross-section is formed at both ends of a certain length, so that the welding portion (s) is easily welded at both ends during roll forming It is configured to be formed.

The sensor ring for automobile ABS manufactured in accordance with the present invention having the structure as described above is finally finished by performing additional surface polishing and rust prevention work to prevent rust of the surface and to improve the commercial quality.

On the other hand, it will be described in detail below with reference to the manufacturing process of Figure 7 with respect to the method for manufacturing the above-mentioned ABS sensor ring.

First, in the present invention, the sensor sensing member 15 and the fitting mounting member 20 are separately manufactured, and the completed sensor sensing member 15 and the fitting mounting member 20 are welded to each other at right angles to each other, and the cross-sections thereof are welded. The sensor ring with this 'b' shape is made.

As shown in the drawings, first, the present invention prepares a steel plate of a flat plate material 100 to manufacture the sensor detecting member 15, the inner diameter of the prepared steel sheet to a size suitable for the wheel hub or wheel drum of the vehicle to be installed A blanking operation is performed to form a predetermined sensor sensing surface 14 between (r) and the outer diameter R, and the steel sheet is cut into a donut shape (102). The entire sensor detecting hole 12 is pierced at equal intervals only once on the sensor sensing surface 14 to complete the fabrication of the sensor sensing member 15.

On the other hand, the fitting member 20 is prepared by cutting a hollow steel pipe having an inner diameter suitable to the wheel hub or wheel drum of the vehicle to be installed (101) (101) or cut into a ring shape to have a predetermined width (103) or After blanking (101) the steel sheet into a strip shape, roll forming and welding (103) to have a predetermined diameter are completed, and one end surface of the fitting mounting member (20) manufactured as described above is used as a whole sensor detecting hole ( 12) is faced to one side of the processed sensor sensing member 15 at right angles to contact each other to maintain the same central axis, and then welding (110) to integrate the sensor sensing member 15 and the fitting mounting member 20. To complete the one sensor ring 10 is combined, and the surface of the welded and the entire surface of the completed sensor ring 10 to perform corrosion treatment and anti-corrosion treatment (112) to improve the marketability (112) As a final production of the sensor ring 10 To complete.

As described above, one end surface of the ring-shaped fitting member 20 is welded at right angles to each other at an inner circumferential edge of the donut-shaped sensor detecting member 15, thereby completing the production of the sensor ring according to the present invention. The manufactured sensor ring 10 is fitted to the mounting surface 22 of the fitting member 20 on the outer circumference of the wheel hub or the wheel drum of the vehicle and rotates together with the wheels of the vehicle to be fixed to the axle or the vehicle body. It is configured to be able to detect the rotational speed of the wheel by the speed sensor, an embodiment of the application state of the vehicle is shown in FIG.

The sensor ring 10 for automobile ABS manufactured by the above structure and method detects the rotational speed of the wheel by the speed sensor and generates the electric pulse signal. Since the through-machined on the surface 14, the mold for the production of the sensor sensing member 15 is simple and the mold development cost is low, thereby reducing the initial development cost, and also in the case of the fitting member 20 One side of the sensor sensing member 15 after cutting the hollow steel pipe having an inner diameter of a predetermined width so as to form a predetermined mounting surface 22 or by blanking the steel sheet and rolling and welding the steel sheet to form a ring shape. Since the welding ring to be used in this way, the produced sensor ring 10 can always maintain a uniform quality, one side of the fitting mounting member 20 in contact with the sensor detecting member 15 Since the chamfered portion 24 is formed in the rib part, the welding work is easily performed and the weld bead is not exposed to the outside to prevent the quality deterioration due to the welding.

Particularly, in the case of the sensor ring 10 manufactured according to the present invention, a ring-shaped fitting member 20 having a mounting surface 22 fitted into the wheel hub or the drum of the vehicle may be used to change parts of the vehicle. When the inner diameter is changed due to a design change or the like, in the conventional case, the diameter of the sensor detecting unit provided on the outer circumferential side of the sensor ring is caused, which causes interference with other components installed near the wheels. While acting as a limiting factor of the design change of the, when using the sensor ring manufactured by the present invention, the sensor mounting member 15 and the sensor detecting member 15 formed with the sensor detecting hole 12 is formed separately, respectively, Since the fitting mounting member 20 is coupled to one side of the sensor sensing surface 14 of the sensor sensing member 15 having a predetermined width, the inner diameter of the fitting mounting member 20 is changed due to a design change or a change of the device. In Even if light is able to be an advantage that can more easily eliminate the interference with the other components it further improve the applicability and component compatibility of the vehicle since it does not result in a change in the outer diameter of the sensor-sensing member (15).

As described above, the manufacturing method of the automotive ABS sensor ring according to the present invention can be produced by a simple mold, the initial development cost is low, and the sensor sensing hole is processed through the press work, so that stable quality and mass production are easy. Also, even when the inner diameter of the wheel hub or drum of the vehicle is changed, the sensor sensing member does not interfere with other components to the outermost side so that various parts can be changed in design and position. It will provide better sensoring.

Claims (3)

delete delete Preparing a sensor sensing member by blanking the steel sheet of the plate material into a donut shape so as to have a constant cross-sectional width between a predetermined inner diameter and an outer diameter; A sensor sensing hole processing step of penetrating the entire sensor sensing hole at equal intervals through a press cutting operation on a surface between the prepared inner and outer diameters of the sensor sensing member; A fitting member processing step of performing welding by rolling a strip-shaped steel sheet having a predetermined width into a ring shape so as to have a predetermined inner diameter and a mounting surface that can be fitted to a wheel hub or a wheel drum of a vehicle to be mounted; A sensoring completion step of welding the contact portion after the fitting fitting member faces at right angles to maintain the same central axis on the inner peripheral edge of one side of the sensor sensing member on which the sensor sensing hole is processed; The method of manufacturing a sensor for automotive ABS, characterized in that consisting of ;; finishing the step of performing a grinding process, antirust and surface treatment to prevent rust on the surface of the finished sensor ring and improves the marketability.

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