CN110043587A - A kind of automotive brake pads automatic detection device - Google Patents

Abstract

The invention discloses a kind of automotive brake pads automatic detection devices, including braking clamp body, brake disc is provided in braking clamp body, brake disc two sides are provided with brake block, the other side on brake block relative to brake disc is respectively connected with piston, the other end on piston relative to brake block is arranged in the hydraulic cylinder of braking clamp body, beneficial effect is: the present apparatus passes through by movable core, armature winding, secondary windings, pull rod, connecting rod, No.1 nut, the sensor of No. two nuts and pull rod composition is mounted on brake block, compared to the installation method of more traditional detection device, such design, so that the present apparatus is easily installed, the present apparatus utilizes differential transformer principle, the mechanical quantity of linear motion is transformed to the variation of electricity, when brake block is pushed by piston to be contacted with brake disc, the straight-line displacement amount of brake block is converted into electricity, according to electricity The thickness of brake block is measured in the variation of amount, this device more accurately can carry out real-time monitoring to brake block thickness.

Description

An automatic detection device for automobile brake pads

technical field

The invention relates to an automatic detection device for automobile brake pads, belonging to the technical field of brake pad detection

Background technique

With the development of the economy, the number of automobiles in the country is increasing year by year. The popularization of motor vehicles brings convenience to people's production and life, but also brings hidden safety hazards. In order to reduce the incidence of traffic accidents, automobile safety technology has gradually become an automobile The most important research direction of the industry.

Brake pads are an important part of the braking system. The braking of the car relies on the friction between the brake pads and the brake disc. Due to the friction, the brake pads will gradually wear out. When the wear reaches the limit, the brake pads must be replaced, otherwise the brake pads will be reduced. Therefore, the braking system of the car is very important to the driving safety. If the thickness of the brake pads can be monitored in real time, the driving safety will be greatly improved and the incidence of traffic accidents will be reduced. Most of the detection systems do not have a detection and reminder device for the thickness of the brake pads. The driver cannot accurately judge when the brake pads need to be replaced. He can only check by regularly going to the auto repair shop. In the existing technology, for the brake pads The thickness reminder usually uses a built-in metal rod in the brake pad. When the brake pad is worn to a certain extent, the metal rod will be exposed. When the driver steps on the brake, the metal rod will rub against the brake disc and make a special sound to prompt the driver to replace it. Brake pads, this detection method makes it impossible for the driver to accurately judge whether the brake pads need to be replaced, and the hard metal rod can easily cause damage to the brake disc, thereby affecting the braking effect. It has not been popularized yet, but this device can increase the safety of car driving, so it is necessary to explore the brake pad thickness detection device.

In people's daily life, automobiles are becoming more and more common, and the safety of automobiles has received more and more attention. Among them, the braking system is particularly important. If the wear level of the brake pads can be monitored in real time, the safety of the braking system can be improved. To reduce the incidence of traffic accidents, the invention proposes an automatic detection device for automobile brake pads.

SUMMARY OF THE INVENTION

In order to solve the defects existing in the prior art, the present invention provides an automatic detection device for automobile brake pads. The sensor is installed on the brake pad. Compared with the traditional installation method of the detection device, this design makes the device easy to install. The device uses the principle of differential transformer to convert the mechanical amount of linear motion into the change of electricity. When braking When the pad is pushed by the piston to contact the brake disc, the linear displacement of the brake pad is converted into electricity, and the thickness of the brake pad is measured according to the change of electricity. This device can accurately monitor the thickness of the brake pad in real time.

In order to solve the above technical problems, the present invention provides the following technical solutions: an automatic detection device for automobile brake pads, comprising a brake caliper body, a brake disc is arranged in the brake caliper body, and both sides of the brake disc are provided with Brake pad, the other side of the brake pad relative to the brake disc is connected with a piston, the end of the piston close to the top of the brake caliper body is fixedly connected with a connecting rod through a No. 1 nut, and one end of the connecting rod is connected with a No. 2 nut. A pull rod is fixedly connected to the nut, and a movable iron core is fixedly connected to the other end of the pull rod relative to the connecting rod. Secondary windings are arranged on both sides of the movable iron core, and both sides of the movable iron core are between the secondary windings. Several primary windings are provided, the movable iron core, primary winding, secondary winding, pull rod, connecting rod, No. 1 nut, No. 2 nut and pull rod form a sensor, the movable iron core, primary winding, secondary winding, pull rod The sensor composed of , connecting rod, No. 1 nut, No. 2 nut and tie rod is the signal generating device.

As a preferred technical solution of the present invention, the other end of the piston opposite to the brake pad is arranged in the hydraulic cylinder of the brake caliper body, and a plurality of hydraulic oils are arranged in the hydraulic cylinder of the brake caliper body.

As a preferred technical solution of the present invention, there are four secondary windings and two primary windings.

As a preferred technical solution of the present invention, the sensor composed of the movable iron core, the primary winding, the secondary winding, the tie rod, the connecting rod, the No. 1 nut, the No. 2 nut and the tie rod is electrically connected with a signal processing device through wires, The signal processing device is electrically connected with the thickness display device, that is, the thickness display screen.

The beneficial effect achieved by the present invention is: the device is installed on the brake pad through a sensor composed of a movable iron core, a primary winding, a secondary winding, a tie rod, a connecting rod, a No. 1 nut, a No. 2 nut and a tie rod. Compared with the traditional The installation method of the detection device, this design makes the device easy to install. The device uses the principle of differential transformer to convert the mechanical amount of linear motion into the change of electricity. When the brake pad is pushed by the piston and contacts the brake disc, the brake pad The linear displacement is converted into electricity, and the thickness of the brake pads is measured according to the change of electricity. This device can accurately monitor the thickness of the brake pads in real time.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the attached image:

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the partial structure schematic diagram of the present invention;

FIG. 3 is a schematic diagram of the work flow structure of the present invention.

In the picture: 1, brake disc; 2, piston; 3, brake pad; 4, connecting rod; 5, hydraulic oil; 6, secondary winding; 7, primary winding; 8, wire; 9, movable iron core; 10, No. 1 nut; 11. Pull rod; 12. Brake caliper body; 13. No. 2 nut.

Detailed ways

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

The embodiment is shown in Figures 1-3, an automatic detection device for automobile brake pads, comprising a brake caliper body 12, a brake disc 1 is arranged in the brake caliper body 12, and brake pads 3 are arranged on both sides of the brake disc 1, A piston 2 is connected to the other side of the disc 3 relative to the brake disc 1. One end of the piston 2 near the top of the brake caliper body 12 is fixedly connected to a connecting rod 4 through a No. 1 nut 10, and one end of the connecting rod 4 is connected to a No. 2 nut. 13 A pull rod 11 is fixedly connected, and the pull rod 11 is fixedly connected with a movable iron core 9 relative to the other end of the connecting rod. During the movement of the piston 2, the connecting rod 4 connected with the piston 2 also moves horizontally, and the connecting rod 4 passes through the The pull rod 11 drives the movable iron core 9 to move the same distance in the same direction. Secondary windings 6 are arranged on both sides of the movable iron core 9, and a number of primary windings 7 are arranged on both sides of the movable iron core 9 between the secondary windings. Core 9, primary winding 7, secondary winding 6, tie rod 11, connecting rod 4, No. 1 nut 10, No. 2 nut 13 and tie rod 11 form a sensor, movable iron core 9, primary winding 7, secondary winding 6, tie rod 11 The sensor composed of the connecting rod 4, the No. 1 nut 10, the No. 2 nut 13 and the tie rod 11 is the signal generating device.

The other end of the piston 2 relative to the brake pad 3 is arranged in the hydraulic cylinder of the brake caliper body 12, a number of hydraulic oils 5 are arranged in the hydraulic cylinder of the brake caliper body 12, four secondary windings 6 are arranged, and the primary windings are arranged. 7 is provided with two, the sensor composed of the movable iron core 9, the primary winding 7, the secondary winding 6, the pull rod 11, the connecting rod 4, the first nut 10, the second nut 13 and the pull rod 11 is electrically connected with a signal through the wire 8 The processing device and the signal processing device are electrically connected with the thickness display device, that is, the thickness display screen.

Specifically, when the present invention is used, when the driver depresses the brake pedal, the piston 2 pushes the brake pad 3 to the brake disc 1 and presses the brake disc 1 under the action of the driving force of the hydraulic oil 5. During the movement, the connecting rod 4 connected with the piston 2 also moves horizontally. The connecting rod 4 drives the movable iron core 9 to move the same distance in the same direction through the pull rod 11, and the brake pad 3 also moves with the movement of the piston 2. The moving distance of the movable iron core 9 is the moving distance of the brake pad 3. When the brake pad wears and becomes thinner, the moving distance of the piston 2 will increase when the brake pad 3 is close to the brake disc 1. Correspondingly, the movement distance of the movable iron core 9 will increase. The moving distance will also increase. Using the linear relationship between the voltage output by the sensor and the displacement of the movable iron core 9, the moving distance of the brake pad 3 can be measured. Compared with the moving distance of the brand-new brake pad 3 when braking, the worn brake The distance between the pad 3 is larger when it is close to the brake disc 1, so the wear degree of the brake pad 3 can be measured according to the increased displacement of the movable iron core 9, and then the thickness of the brake pad 3 is displayed, and the driver is reminded to replace it when it reaches the limit thickness. Brake pads 3 to improve the safety of the braking system.

Finally, it should be noted that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the The technical solutions described in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (4)

1. An automatic detection device for automobile brake pads, characterized in that it comprises a brake caliper body (12), wherein a brake disc (1) is provided in the brake caliper body (12), and two brake discs (1) are provided. Brake pads (3) are provided on both sides, and pistons (2) are connected to the other side of the brake pads (3) relative to the brake disc (1), and the pistons (2) are close to the brake caliper body ( 12) One end of the top is fixedly connected with a connecting rod (4) through a No. 1 nut (10), and one end of the connecting rod (4) is fixedly connected with a pulling rod (11) through a No. 2 nut (13), and the pulling rod (11) A movable iron core (9) is fixedly connected with the other end relative to the connecting rod, and secondary windings (6) are arranged on both sides of the movable iron core (9), and the movable iron core (6) is arranged between the secondary windings (6). A plurality of primary windings (7) are arranged on both sides of the core (9), the movable iron core (9), the primary winding (7), the secondary winding (6), the pull rod (11), the connecting rod (4), the The nut (10), the second nut (13) and the tie rod (11) form a sensor, the movable iron core (9), the primary winding (7), the secondary winding (6), the tie rod (11), the connecting rod (4) ), the No. 1 nut (10), the No. 2 nut (13) and the tie rod (11), the sensor is the signal generating device. 2 . The automatic detection device for automobile brake pads according to claim 1 , wherein the hydraulic pressure of the brake caliper body (12) is arranged on the piston (2) relative to the other end of the brake pad (3). 3 . In the cylinder, a plurality of hydraulic oils (5) are arranged in the hydraulic cylinder of the brake caliper body (12). 3 . The automatic detection device for automobile brake pads according to claim 1 , wherein there are four secondary windings ( 6 ) and two primary windings ( 7 ). 4 . 4 . The automatic detection device for automobile brake pads according to claim 1 , wherein the movable iron core (9), the primary winding (7), the secondary winding (6), the tie rod (11), the connecting The sensor composed of the rod (4), the No. 1 nut (10), the No. 2 nut (13) and the tie rod (11) is electrically connected with a signal processing device through a wire (8). The signal processing device and the thickness display device are the thickness The display screen is electrically connected.