CN211624023U

CN211624023U - Friction plate wear alarm and disc brake

Info

Publication number: CN211624023U
Application number: CN202020088727.0U
Authority: CN
Inventors: 张云科; 张永杰; 其他发明人请求不公开姓名
Original assignee: Hebei Exxon Power Technology Co ltd
Current assignee: Hebei Heng Sheng Machinery Technology Co ltd
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2020-10-02
Anticipated expiration: 2030-01-15

Abstract

The utility model provides a friction disc wear alarm and disc brake, this friction disc wear alarm includes power supply, wearing and tearing monitoring devices and warning device, wearing and tearing monitoring devices includes a monitoring unit that is used for arranging on disc brake, monitoring unit includes first wire and the first contact terminal that is used for arranging in first friction disc that is located this first wire end, monitoring unit still includes the second wire at the brake disc opposite side and the second contact terminal that is used for arranging in second friction disc that is located this second wire end, first contact terminal and second contact terminal all include the conductive contact that is wrapped up by insulating material; the power supply, the warning device, the first lead and the second lead are electrically connected in series. The conductive contact of the alarm of the utility model is wrapped in the insulating material, and the conductive contact can not be connected with the friction plate before the insulating material is not worn; after the insulating material is abraded, a closed loop is formed by bonding the brake disc, and the warning device gives an alarm.

Description

Friction plate wear alarm and disc brake

Technical Field

The utility model relates to a vehicle manufacturing and equipment field especially relate to a friction disc wearing and tearing siren and disc brake.

Background

In vehicles or vehicles that move on wheels, it is often necessary to use brakes to stop the vehicle. The disc brake in the brake realizes braking through mutual friction of a friction plate and a brake disc. The friction plates are consumed with constant use, gradually losing effectiveness. The friction material of friction disc uses up the back and in time changes the brake block, otherwise steel sheet and brake disc will direct contact, can lose braking effect and damage the brake disc finally. It is often necessary to periodically inspect and replace the friction plates. As disc brakes are used in large numbers in commercial vehicles, particularly heavy vehicles, in order to ensure driving safety, it is necessary to ensure a braking effect, and monitoring of the amount of wear of friction plates becomes necessary for the vehicles.

The abrasion alarm of the friction plate of the conventional commonly-used disc brake is characterized in that a detection loop is arranged in the friction plate, and when the friction plate is abraded to a certain value, the alarm detection loop of the friction plate is abraded off by a brake disc to form an open circuit and provide an alarm signal. The input line of each brake of the alarm mode is generally a double-core line, the cost is high, and because the friction plate is usually made of a semi-metal material, even if the alarm line is worn off, a loop can be formed between the alarm line and the friction plate, and when the friction plate is seriously worn, the loop is still formed in the detection loop, so that the alarm cannot be accurately and timely given. If the friction plate cannot be replaced in time by alarming, serious traffic accidents are possibly caused greatly.

SUMMERY OF THE UTILITY MODEL

In view of the above, embodiments of the present invention provide a friction plate wear alarm and a disc brake to obviate or mitigate one or more of the disadvantages of the prior art.

The technical scheme of the utility model as follows:

the friction plate wear alarm comprises a power supply, a wear monitoring device and a warning device, wherein the wear monitoring device can comprise a monitoring unit arranged on a disc brake, the monitoring unit comprises a first conducting wire and a first contact terminal arranged at the tail end of the first conducting wire and used for being arranged on a first friction plate, the monitoring unit also comprises a second conducting wire and a second contact terminal arranged at the tail end of the second conducting wire and used for being arranged on a second friction plate, and the first contact terminal and the second contact terminal both comprise conductive contacts wrapped by insulating materials; the power supply, the warning device, the first lead and the second lead are electrically connected in series.

The wear monitoring device may include a plurality of monitoring units for being arranged on the plurality of disc brakes, respectively, the warning device including an audible warning indicator and a plurality of visual warning indicators, wherein the number of the visual warning indicators is the same as the number of the monitoring units.

In some embodiments, each monitoring unit is connected in series with a corresponding visual alarm, and each visual alarm and each audible alarm are usually connected in parallel on a line on which a power supply is connected.

In a preferred embodiment, the first and second conductors are both single conductor conductors.

In some embodiments, the insulating material may be provided in a cylindrical shape, and a central portion of an outer periphery of the insulating material is provided with a notch for clamping the first contact terminal and the second contact terminal at the preformed groove of the friction plate.

In some embodiments, the first and second conductors are still merged into a single conductor by a doubling joint after extending out of the disc brake.

In some embodiments, the conductive metal contacts may be embedded within a central portion of a cylinder formed of an insulating material.

In some embodiments, the insulating material is an insulating resin and the conductive contacts are copper contacts.

A disc brake mounted with the above-described friction plate wear alarm, the first contact terminal and the second contact terminal of which are arranged to extend a predetermined distance from the steel back of the friction plate toward the brake disc. The disc brake further comprises at least one pair of friction plates arranged on both sides of the brake disc; the power supply of the friction plate abrasion alarm is an automobile battery; and the warning device of the friction plate abrasion alarm is arranged in the warning box of the cab.

In some embodiments, the first contact terminal and the second contact terminal are arranged to be embedded in the friction plate or to be clamped at a pre-groove of the friction plate.

According to the utility model discloses a friction disc wearing and tearing siren and disc brake, the beneficial effect that can obtain includes at least: according to the friction plate abrasion alarm provided by the embodiment of the utility model, the conductive contact is wrapped in the insulating material, and before the insulating material is abraded, the conductive contact cannot be connected with the friction plate, so that the alarm is more accurate; after the insulating material is abraded, a closed loop is formed by bonding the brake disc, and the warning device is triggered to give an alarm.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

It will be appreciated by those skilled in the art that the objects and advantages that can be achieved with the present invention are not limited to the details set forth above, and that these and other objects that can be achieved with the present invention will be more clearly understood from the following detailed description.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention. For convenience in illustrating and describing some portions of the present invention, corresponding parts of the drawings may be exaggerated, i.e., may be larger, relative to other components in an exemplary device actually manufactured according to the present invention. In the drawings:

fig. 1 is a schematic structural diagram of friction plates with friction plate wear alarms installed on two sides of a brake disc according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of a contact terminal disposed on a friction plate according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view illustrating a contact terminal disposed on a friction plate according to an embodiment of the present invention.

Fig. 4 is a schematic perspective view of a contact terminal according to an embodiment of the present invention.

Fig. 5 is a schematic cross-sectional view of a contact terminal according to an embodiment of the present invention.

Fig. 6 is a schematic diagram of the working circuit of the friction plate wear alarm according to an embodiment of the present invention.

Fig. 7 is a schematic circuit diagram of an alarm box according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the structures and/or process steps that are closely related to the solution according to the invention are shown in the drawings, while other details that are not relevant to the invention are omitted.

It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, elements, steps or components, but does not preclude the presence or addition of one or more other features, elements, steps or components.

It is also noted herein that the term "coupled," if not specifically stated, may refer herein to not only a direct connection, but also an indirect connection in which an intermediate is present.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same or similar parts, or the same or similar steps.

An object of the utility model is to provide a friction disc wearing and tearing siren and disc brake to solve or alleviate the inaccurate scheduling problem of alarm of wearing and tearing siren existence among the prior art, also reduced manufacturing cost simultaneously, simplified the structure.

The utility model discloses friction disc wearing and tearing siren includes power supply, wearing and tearing monitoring devices and warning device etc..

As shown in fig. 1 to 5, the wear monitoring device of the present invention comprises at least one monitoring unit for arrangement on the disc brake. The monitoring unit is installed at the position of the friction plate as a sensor, and the warning device can be installed in a vehicle cab and used for reminding a driver to detect a brake and replace the friction plate.

In some embodiments, the monitoring unit comprises a first wire 6 and a first contact terminal at the end of the first wire 6 for arranging on a first friction plate 2, the monitoring unit further comprising a second wire 5 and a second contact terminal at the end of the second wire 5 for arranging on a second friction plate, the first and second contact terminals each comprising a conductive contact 3 surrounded by an insulating material 4. The first friction plate and the second friction plate are a pair of friction plates mounted on both sides of the brake disk 9. The first conducting wire 6 and the second conducting wire 5 are electrically connected and combined into a bus 8 after leaving the respectively arranged friction plates. The power supply, the warning device and the bus 8 are electrically connected in series. In this embodiment, the two circuits of the first contact terminal and the second contact terminal can be seen as two parallel branches connected to the bus 8.

The brake pad of the disc brake can comprise a steel plate 1 (also called a steel back of a friction plate) on the back surface, a bonding heat insulation layer, the friction plate 2 and the like. The utility model discloses monitoring unit can arrange in 2 departments of friction disc, also can arrange at the bonding position of steel sheet 1 with friction disc 2.

The traditional brake disc material generally adopts iron series metal materials, such as cast iron series and steel series materials, and has electric conductivity. In some embodiments, the friction plate wear alarm further comprises a power source connected to the warning device and the conductive contacts of the contact terminals via a bus 8, the power source, the warning device and the bus 8 being electrically connected in series.

For convenience of description, the first contact terminal and the second contact terminal of the embodiments of the present invention may be collectively referred to as a contact terminal hereinafter.

Taking an example that the power supply adopts an automobile power supply, an automobile circuit generally adopts a working mode of double-source, low-voltage, direct-current and negative pole bonding. The ground is typically a common point where the electrically conductive portions of the automobile body serve as the negative pole of the power source. The advantages are saving material and good working reliability. The return lines of various electrical appliances are not directly connected to the cathode of the battery, but indirectly connected back to the cathode of the battery through the metal body of the automobile.

The utility model discloses friction disc wearing and tearing siren, under the insulating material 4 of arbitrary one contact terminal was worn and torn in friction disc 2 and first contact terminal and second contact terminal made conductive contact 3 and brake disc 9 contact's state, brake disc 9, power, warning device, first contact terminal or second contact terminal's conductive contact and brake disc form the bonding return circuit, trigger alarm signal. That is, in a state where any one of the friction plates is worn to the extent that the conductive contact 3 contacts the brake disk 9, the warning device issues an alarm.

The utility model discloses friction disc wearing and tearing siren, electrically conductive contact parcel are in insulating material, and insulating material can be the structure of cylinder. Before the insulating material is not worn, the conductive contact cannot be connected with the friction plate, so that the alarm is more accurate; after the insulating material is abraded, a bonding loop is formed by the brake disc, and the warning device is triggered to give an alarm. When the alarm is not triggered, no current is consumed in the circuit, and energy is saved.

As shown in fig. 1 to 5, in some embodiments, the contact terminal may be embedded in the friction plate 2, that is, the contact terminal with the conductive wire may be directly embedded in the friction material and bonded by an adhesive at the production stage of the friction plate. In other embodiments, the outer peripheries of the steel plate 1 and the friction plate 2 of some friction plates are provided with a reserved groove 10, and the contact terminal can be clamped at the groove 10.

As shown in fig. 4 and 5, a notch 401 is provided in the middle of the outer periphery of the insulating material 4 of the contact terminal to clamp the contact terminal in the preformed groove 10 of the friction plate.

Preferably, the size of the insulating material 4 can be matched to the size of the preformed groove 10, for example, the thickness of the gap 401 of the insulating material 4 is equal to that of the steel plate 1, and the end 403 of the insulating material 4 is equal to that of the groove hole of the friction plate 2. The utility model discloses insulating material adopts both ends to strengthen widening, and the design of middle part breach can prevent to drop insulating material card in the preformed groove of friction disc and steel sheet, also prevents the insulating material rupture with insulating material card.

The utility model discloses contact terminal easily installs, can place in the friction disc in, also can install externally between the steel sheet of stopper and friction disc at the preformed groove of friction disc or can install.

The friction plate 2 is also usually made of a semimetal material and has a certain conductivity. If the conductive contact 3 is in direct contact with the friction plate 2, a ground loop may also be formed, causing the warning device to give an alarm. The utility model discloses contact terminal 3 arranges in the inside of insulating material 4, prevents conductive contact 3 and friction disc 2 direct contact.

In some embodiments, the insulating material 4 is provided with a cylindrical hole 402 in the middle, and as shown in fig. 4 and 5, the conductive contact 3 can be snapped into the hole 402 in the middle of the insulating material 4. In other embodiments, the conductive contacts 3 may be entirely encased within the insulating material 4. In the production stage, the conductive contact 3 is directly embedded in the insulating material 4, and the conductive contact 3 is connected with the warning device through a protruding lead.

The utility model discloses but the contact terminal modular design, easily manufacturing.

In some embodiments, the insulating material 4 of the first contact terminal and the second contact terminal may be insulating resin or other insulating and easily-ground substances, and the conductive contact 3 may be copper wire or other metal material, or may be conductive composite material or carbon rod or other conductive materials.

In some embodiments, as shown in fig. 1, the conductive contacts of one contact terminal are connected using wires 5 and the conductive contacts of the other contact terminal are connected using wires 6, which are combined into a bus 8 by a doubling joint 7. The lead 5 and the lead 6 can be single-core leads, and the bus 8 is also a single-core lead. The utility model discloses a single core wire, simple structure, the cost is lower. This wiring method is also suitable for mounting the friction plate wear alarm to a plurality of brakes of a vehicle, and can preferably house the lead wires and prevent the lead wires from being broken by the brake disc 20 rotating at a high speed.

As shown in fig. 6 and 7, in some embodiments, the wear monitoring device includes a plurality of monitoring units for being disposed on a plurality of disc brakes, respectively, and the warning device includes an audible warning indicator and a plurality of visual warning indicators, wherein the number of visual warning indicators is the same as the number of monitoring units. Each monitoring unit is respectively connected with a corresponding visual alarm in series, and each visual alarm and each auditory alarm are connected with a line on which the power supply is connected in parallel.

In some embodiments, the warning device may be an audible and visual alarm, the audible alarm may be an indicator light, and the visual alarm may be an indicator light buzzer. Wherein, an pilot lamp passes through the wire with two contact terminals of a monitoring unit and establishes ties for the condition of a pair of friction disc of warning, and each pilot lamp is parallelly connected with bee calling organ. The indicator light can adopt red LED lamps, and one LED lamp corresponds to one stopper (a pair of friction plates).

If will the utility model discloses when friction disc wearing and tearing siren is used on heavy vehicle, take figure 6 and figure 7 as an example, this siren includes 6 monitoring unit, installs respectively on 6 stopper, and this quantity is the example only, and audible-visual annunciator that pilot lamp and buzzer are constituteed is installed in the warning box of driver's cabin, and its power can adopt car battery. The audible and visual alarm is directly connected with a conductive contact of a contact terminal arranged at the tail end through an extension line (bus). When current passes through any one line, the corresponding LED lamp flashes, and the buzzer gives an alarm sound to remind a driver of paying attention. In this embodiment, the bus of the 6 monitoring units and the wires of the warning device can be collected and connected by adopting male connectors, female connectors or plug connectors.

Fig. 7 is a circuit diagram of the alarm box of the cab, which is merely an example of the present invention and is not limited thereto in practical applications. The circuit of the alarm can also be provided with a fuse to protect the circuit.

For example, when the alarm of the embodiment of the present invention brakes, the friction plates 2 on both sides clamp the rotating brake disc 9 under the clamping force of the brake caliper, so as to generate a braking force. The friction material on the friction plate 2 is lost with the braking time, and its thickness is gradually reduced. When the thickness of the friction plate 2 is reduced to a certain value, the brake disc 9 will contact and rub against the alarm insulation 4. Insulating material 4 at the alarm end is composed of insulating resin or other insulating easily-worn substances, when insulating layer at the head of insulating material 4 is worn off and metal wire or conductive contact 3 wrapped inside is exposed, conductive contact 3 forms a grounding loop with brake disc 9 and a power supply, and alarm wire 8 of the brake has current to pass through. At the moment, the corresponding LED lamp in the alarm box in the cab flashes, the buzzer rings, and the driver is reminded to replace the friction plate 2 corresponding to the brake in time.

According to another aspect of the present invention, there is also provided a disc brake having the above-described friction plate wear alarm installed thereon, the disc brake including: at least one pair of friction plates disposed on both sides of the brake disc, and a first contact terminal and a second contact terminal of the friction plate wear alarm are disposed to extend from a steel back surface of the friction plates toward the brake disc by a predetermined distance. The preset distance is the distance between the conductive contact of the contact terminal and the steel back surface, and the distance can be used for controlling the abrasion state of the early warning friction plate. The power supply of the friction plate abrasion alarm adopts an automobile battery; the warning device of the friction plate wear alarm is arranged in a warning box of a cab.

The utility model discloses friction disc wearing and tearing siren and disc brake are applicable to vehicle brake, are particularly useful for heavy vehicle brake, of course, also can use it in other equipment that contain at the brake, like jack-up transportation machinery, metallurgical equipment, mining equipment, building engineering machinery, wind-powered electricity generation and nuclear power equipment, boats and ships and marine heavy industry, or amusement facilities or other needs or can adopt disc brake's equipment.

According to the utility model discloses a friction disc wearing and tearing siren and disc brake, the beneficial effect that can obtain includes at least:

1) according to the friction plate abrasion alarm provided by the embodiment of the utility model, the conductive contact is wrapped in the insulating material, and before the insulating material is abraded, the conductive contact cannot be connected with the friction plate, so that the alarm is more accurate; after the insulating material is abraded, a bonding loop is formed by the brake disc, and the warning device is triggered to give an alarm.

2) When the alarm is not triggered, no current is consumed in the circuit, and energy is saved.

3) The utility model discloses contact terminal easily installs, in both can place the friction disc in, also can install externally between the steel sheet of stopper and friction disc at the preformed groove of friction disc or can install.

4) The utility model discloses but contact terminal and warning device modular design easily make.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments and/or in combination with or instead of the features of the other embodiments.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A friction plate wear alarm for a disc brake, the friction plate wear alarm comprising an electrical power supply, a wear monitoring device and a warning device,

the wear monitoring device comprises a monitoring unit arranged on a disc brake, the monitoring unit comprises a first conducting wire and a first contact terminal arranged at the tail end of the first conducting wire and used for being arranged on a first friction plate, the monitoring unit also comprises a second conducting wire and a second contact terminal arranged at the tail end of the second conducting wire and used for being arranged on a second friction plate, and the first contact terminal and the second contact terminal both comprise conductive contacts wrapped by insulating materials;

the first conducting wire and the second conducting wire are electrically connected and combined into a bus after leaving the friction plates which are respectively arranged;

the power supply, the warning device and the bus are electrically connected in series.

2. A friction plate wear alarm for a disc brake according to claim 1, wherein the wear monitoring device comprises a plurality of monitoring units for being arranged on a plurality of disc brakes, respectively, the warning device comprising an audible warning and a plurality of visual warnings, wherein the number of visual warnings is the same as the number of monitoring units.

3. A friction plate wear alarm for a disc brake according to claim 2, wherein each monitoring unit is connected in series with a corresponding visual alarm, and each visual alarm and each audible alarm are connected in parallel to a line on which the power supply is provided.

4. A friction plate wear alarm for a disc brake according to claim 1, wherein the first and second conductors are each a single conductor and the bus is also a single conductor.

5. A friction plate wear alarm for a disc brake according to claim 1, wherein the insulating material is provided in a cylindrical shape with a notch in a central portion of an outer periphery thereof for catching the first and second contact terminals at the pre-grooves of the friction plate.

6. A friction plate wear alarm for a disc brake according to claim 1, wherein the conductive contacts snap into holes in the middle of a cylinder formed of insulating material.

7. A friction plate wear alarm for a disc brake according to claim 1, wherein the conductive contacts are integrally wrapped within an insulating material.

8. A disc brake incorporating a friction plate wear alarm as claimed in any one of claims 1 to 7,

the disc brake further includes at least one pair of friction plates disposed on both sides of the brake disc, the first contact terminal and the second contact terminal of the friction plate wear alarm being disposed to extend from the steel back of the friction plate toward the brake disc by a predetermined distance;

the power supply of the friction plate abrasion alarm is an automobile battery;

and the warning device of the friction plate abrasion alarm is arranged in the warning box of the cab.

9. The disc brake of claim 8, wherein the first and second contact terminals are arranged to be embedded in or snapped into a pre-groove of a friction plate.