A monitoring device for a brake pad of a vehicle brake

Abstract

The application discloses a kind of monitoring devices of automobile brake pad, it is related to automobile brake technology field, including brake caliper, brake pad assembly, monitoring component and brake disc, the brake pad assembly and brake disc are all arranged in the inside of brake caliper, the monitoring component is arranged in the outside of brake caliper.The application is by being arranged in the inside of brake caliper brake pad assembly, piston in brake caliper can promote brake pad assembly movement, so that brake pad assembly and brake disc contact and occur friction, to reach the effect of braking, by being arranged in the outside of brake caliper monitoring component, monitoring component inside is provided with connecting arm, and connecting arm is connected with the movable arm in brake pad assembly, when brake pad assembly is worn due to use, connecting arm and movable arm cooperate, can realize the monitoring of brake pad assembly wear degree, so that security risk can be avoided due to user not understanding brake pad wear degree.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile brake, in particular to a monitoring device for automobile brake pad. BACKGROUND

[0002] Disc brake is a disc brake, which is controlled by hydraulic pressure and includes a brake disc, a master cylinder, a brake caliper, an oil pipe, etc. The brake disc is made of alloy steel and is fixed on the wheel and rotates with the wheel. The master cylinder is fixed on the bottom plate of the brake and is stationary. Two friction pads on the brake caliper are respectively installed on both sides of the brake disc. The piston of the master cylinder is pushed by the hydraulic pressure delivered by the oil pipe to push the friction pads against the brake disc to generate friction braking.

[0003] Application No. CN202210447298.5 discloses a trailer brake pad brake lining wear monitoring and alarming device. When the brake pad is worn, the brake disc will touch the touch block, and the contact will trigger the alarm switch to prompt the brake pad wear. When the wear reaches the set position, the lifting mechanism works to lower the lifting block, so that the contact of the touch block contacts the alarm switch to continuously alarm to prompt the driver to replace the brake pad assembly.

[0004] Application No. CN202122782109.3 discloses a brake pad wear sensor. When the brake pad is rubbed, the detection cone is also rubbed, and the movable ring on the fixed assembly is pressed to compress the spring and compress the telescopic assembly. The telescopic rod extends into the fixed sleeve and the movable sleeve, and the movable sleeve slides into the movable ring. The movable ring abuts against the detection cone to prevent deviation and is more stable. When the wire in the detection cone is broken, the brake pad reaches the scrap degree and reminds the driver to replace the brake pad.

[0005] Although the brake in the prior art has a certain braking effect when in use, it cannot timely understand the wear condition of the two brake pads, i.e. the wear position, whether it reaches the maximum wear amount, so that when the brake pad is severely worn, it cannot be timely understood, resulting in certain safety hazards of the automobile during long-distance use.

[0006] Therefore, it is necessary to invent a monitoring device for automobile brake pad to solve the above problems. SUMMARY

[0007] The present application aims to provide a monitoring device for automobile brake pad to solve the technical problem of not being able to timely understand the wear condition of the two brake pads, i.e. the wear position, whether it reaches the maximum wear amount.

[0008] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0009] The utility model provides a kind of monitoring device of automobile brake pad, including brake caliper and brake disc, brake caliper inside is symmetrically provided with brake pad assembly, two brake pad assembly is located brake disc two sides respectively, the contact part of two brake pad assembly and brake disc is not at the same height, the end of brake caliper is equipped with monitoring assembly for monitoring the wear amount of brake pad assembly;Brake pad assembly includes the base that is arranged in brake caliper, the side of base close to brake disc is fixedly connected with the frosted part that is arrayed distribution, the middle part of frosted part is provided with recess, the bottom of frosted part is provided with the through slot that is connected with recess, the inside of recess is all connected with movable plate by elastic member, corresponding movable plate on brake disc two sides is not at the same height, the inside of through slot is all provided with connecting plate, and connecting plate is fixedly arranged at the bottom of movable plate, the bottom of connecting plate is fixedly provided with movable arm, and one end of movable arm is connected with monitoring assembly by connecting component, and the other end of movable arm is fixedly connected with fixed plate by telescopic element, and the end away from telescopic element of fixed plate is fixedly connected with the side wall of brake caliper.Through setting brake pad assembly on the two sides of brake caliper to brake disc, simultaneously, through setting movable plate and monitoring assembly to monitor the wear condition of frosted part, simultaneously, because movable plate on the two sides of brake disc is not at the same height, so that brake pad assembly can monitor different height of same brake disc when braking brake disc, to determine whether brake pad assembly appears deflection.

[0010] Preferably, the monitoring assembly includes a fixed box fixedly connected to the end of the brake caliper, a side bottom end of the fixed box is provided with a insertion hole, the insertion hole is provided with an insertion rod, the insertion rod is provided with an "L" shaped connecting arm at the end away from the fixed box, and the end of the connecting arm away from the fixed box is connected with the end of the movable arm. By setting the connecting arm, the movable block can drive the connecting arm to move through the connecting plate when moving, and the connecting arm can drive the insertion rod to move in the fixed box through the insertion hole.

[0011] Preferably, the monitoring assembly further includes a sliding seat arranged in the fixed box, a sliding hole is provided in the middle of the sliding seat, the diameter of the sliding hole is matched with the insertion rod, a limiting ring is connected to one side of the sliding seat through a sleeve, the limiting ring is connected with the insertion rod through a locking assembly, an extension plate is fixedly arranged on one side of the sliding seat, a touch switch is arranged on one side of the extension plate, and the touch switch is fixedly arranged in the fixed box; an indicating block is fixedly arranged on one side of the sliding seat, a sliding groove with a strip structure is provided in the middle of one side of the fixed box, the indicating block is arranged in the sliding groove, and scale lines are arranged on both sides of the slot of the sliding groove.

[0012] The locking assembly is an electromagnetic bolt, by setting the indicating block and the scale line, the position of the sliding seat can be monitored, so that the wear condition of the brake pad assembly can be monitored.

[0013] Preferably, the middle part of the sliding seat is provided with an adjusting screw hole, an adjusting screw rod is arranged in the adjusting screw hole, one end of the adjusting screw rod is arranged in the inner wall of the fixed box through a bearing, and an adjusting knob is arranged at one end of the adjusting screw rod. The adjusting knob can drive the adjusting screw rod to rotate, and the adjusting screw rod cooperates with the adjusting screw hole, so that the initial position of the sliding seat can be adjusted, thereby realizing zero adjustment during installation of the device.

[0014] Preferably, the depth of the groove is greater than the thickness of the movable plate, and the width of the through groove is greater than the thickness of the connecting plate. By setting the depth of the groove, the movable plate can have an activity amount in the groove, and by setting the width of the through groove, the connecting plate can have an activity amount in the through groove.

[0015] Preferably, the connecting assembly comprises a fine adjustment screw hole arranged at the end of the connecting arm away from the plug rod, a fine adjustment screw rod is arranged in the fine adjustment screw hole, one end of the fine adjustment screw rod is movably arranged with a connecting rod through a bearing, the end of the connecting rod is connected with the end of the movable arm, and connecting sleeves are arranged at both ends of the movable arm; one of the connecting sleeves is fixedly connected with the telescopic piece, and the other connecting sleeve is inserted with the connecting rod.

[0016] By rotating the fine adjustment screw rod, the position between the fine adjustment screw rod and the movable arm is adjusted, so that the distance between the movable arm and the connecting arm is adjusted. Since the movable arm can drive the sliding seat to move, and the monitoring assembly detects the wear of the brake pad assembly according to the position of the sliding seat, rotating the fine adjustment screw rod can adjust the monitoring range of the device.

[0017] Preferably, a positioning hole is arranged at one side of the connecting sleeve inserted with the connecting rod, a positioning screw rod is arranged in the positioning hole, and an array of screw holes adapted to the positioning screw rod is arranged at one end of the outer side wall of the connecting rod. By arranging the positioning screw rod and the positioning hole, the positioning screw rod can pass through the positioning hole, so that the position between the connecting rod and the connecting sleeve is fixed.

[0018] Preferably, mounting seats are fixedly arranged at the top ends of the outer side walls of the fixed box, mounting bolts are arranged in the screw holes arranged in the middle parts of the mounting seats, fixed seats are sleeved on the outer sides of the mounting bolts, and the fixed seats are fixedly arranged at the ends of the brake calipers. By arranging the fixed seats and the mounting seats, the installation of the monitoring assembly can be realized.

[0019] Preferably, the outer side of the movable plate is flush with the outer side of the sanding part, and the strength of the movable plate is higher than that of the sanding part. Since the strength of the movable plate is higher than that of the sanding part, the wear of the movable plate during braking is much lower than that of the sanding part.

[0020] Preferably, the elastic member is a push spring, one end of the push spring is fixedly connected with the rear side of the movable plate, and the end of the push spring away from the movable plate is fixedly connected with the groove bottom of the groove.

[0021] By arranging the push spring, the movable plate can be kept in contact with the brake disc during braking, and the through groove can limit the connecting plate when the movable plate moves, so that the movable plate and the groove can be separated.

[0022] The technical effects and advantages of the present application are as follows:

[0023] 1. By arranging the brake pad assembly in the brake caliper, the piston in the brake caliper can push the brake pad assembly to move, so that the brake pad assembly contacts and rubs with the brake disc, thereby achieving the effect of braking. By arranging the monitoring assembly on the outside of the brake caliper, the monitoring assembly is internally provided with a connecting arm, and the connecting arm is connected with the movable arm in the brake pad assembly. When the brake pad assembly is worn due to use, the connecting arm and the movable arm cooperate to monitor the wear degree of the brake pad assembly, thereby avoiding safety hazards caused by the user's unawareness of the wear degree of the brake pad.

[0024] 2. By arranging the brake pad assembly, the brake pad assembly comprises a base and a sanding layer, the sanding layer is used for friction braking with the brake disc, a groove is arranged in the inside of the sanding layer, the inside of the groove is provided with a movable plate, and the strength of the movable plate is higher than that of the sanding layer. During braking, the movable plate and the sanding layer are simultaneously in contact with the brake disc. When the thickness of the sanding layer changes due to wear, the movable plate and the brake disc are simultaneously in contact with the brake disc. At this time, the movement amplitude of the movable plate is larger. At this time, the touch switch in the monitoring assembly is closed, and the position of the indicating block changes. At this time, the monitoring of the brake pad can be realized.

[0025] 3. By arranging the brake pad assembly and the monitoring assembly, the brake pad assembly and the monitoring assembly are transmissionally connected through the movable arm and the connecting arm. A connecting sleeve is arranged at both ends of the movable arm, a connecting rod is arranged at one end of the connecting arm, the connecting sleeve and the connecting rod cooperate to realize the connection between the movable arm and the connecting arm. A fine adjustment screw is arranged at one end of the connecting rod, and a fine adjustment screw hole is arranged at one end of the connecting arm. The fine adjustment screw and the fine adjustment screw hole cooperate to realize the fine adjustment of the position between the connecting arm and the movable arm, thereby realizing the adjustment of the initial monitoring position of the monitoring assembly, and thereby facilitating the adjustment of the device after replacing the brake pad.

[0026] 4、The present application sets the movable plate corresponding to the grinding part on both sides of the brake disc at different heights, so that when the brake pad assembly brakes the brake disc, the values monitored by the brake assemblies on both sides of the brake disc are different when the installation of the brake assembly is skewed, and when the control system detects that the values detected by the monitoring assemblies at both ends of the brake caliper are different, it indicates that the installation of the brake pad assembly on both sides of the brake disc is skewed. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the schematic diagram of the main structure of the present application.

[0028] Figure 2 It is the schematic diagram of the main structure of the present application. Figure 1

[0029] Figure 3 It is the lower view schematic diagram of the brake caliper structure of the present application.

[0030] Figure 4 It is the schematic diagram of the brake pad assembly structure of the present application.

[0031] Figure 5 It is the schematic diagram of the brake pad assembly structure of the present application.

[0032] Figure 6 It is the schematic diagram of the grinding part structure of the present application.

[0033] Figure 7 It is the schematic diagram of the brake pad assembly and monitoring assembly structure of the present application.

[0034] Figure 8 It is the schematic diagram of the brake pad assembly and monitoring assembly structure of the present application. Figure 7

[0035] Figure 9 It is the schematic diagram of the monitoring assembly structure of the present application.

[0036] Figure 10 It is the schematic diagram of the monitoring assembly structure of the present application.

[0037] Figure 11 It is the schematic diagram of the monitoring assembly structure of the present application.

[0038] Figure 12 It is the schematic diagram of the slide structure of the present application.

[0039] Figure 13 It is the distribution diagram of the brake assembly on both sides of the brake disc of the present application.

[0040] Figure 14 It is the position of the movable plate under different grinding conditions of the grinding part of the present application. ​​

[0041] In the figure: 1, brake caliper; 2, brake pad assembly; 201, base; 202, frosted part; 203, groove; 204, through slot; 205, movable plate; 206, connecting plate; 207, movable arm; 3, monitoring assembly; 301, fixed box; 302, jack; 303, insertion rod; 304, connecting arm; 305, sliding seat; 306, sliding hole; 307, limiting ring; 308, extension plate; 309, touch switch; 310, indicating block; 311, sliding groove; 312, scale line; 313, adjusting screw hole; 314, adjusting screw; 4, brake disc; 5, connecting assembly; 501, connecting sleeve; 502, fine adjustment screw hole; 503, fine adjustment screw; 504, connecting rod; 505, positioning hole; 6, telescopic part; 7, fixed plate; 8, mounting seat; 9, mounting bolt; 10, fixed seat; 11, elastic part. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0043] The present application provides a kind of brake caliper and brake disc monitoring device, including brake caliper and brake disc, brake caliper is connected with brake disc, brake caliper includes base, movable plate, connecting plate, movable arm, fixed box, jack, insertion rod, touch switch, indicating block, sliding groove, scale line, adjusting screw hole, adjusting screw, fixed seat, elastic part, monitoring assembly, monitoring assembly is connected with fixed box, monitoring assembly includes fixed box, jack, insertion rod, touch switch, indicating block, sliding groove, scale line, adjusting screw hole, adjusting screw, fixed seat, elastic part. Figures 1 to 14The application discloses a monitoring device for a brake pad of an automobile brake, which comprises a brake caliper 1 and a brake disc 4, brake pad assemblies 2 are symmetrically arranged in the brake caliper 1, the two brake pad assemblies 2 are respectively located on the two sides of the brake disc 4, the contact parts of the two brake pad assemblies 2 and the brake disc 4 are not at the same height, and monitoring assemblies 3 for monitoring the wear amount of the brake pad assemblies 2 are arranged at the two ends of the brake caliper 1; the brake pad assembly 2 comprises a base 201 arranged in the brake caliper 1, abrasive parts 202 in an array are fixedly connected to the side of the base 201 close to the brake disc 4, grooves 203 are formed in the middle parts of the abrasive parts 202, through grooves 204 in communication with the grooves 203 are formed in the bottom parts of the abrasive parts 202, movable plates 205 are connected to the interiors of the grooves 203 through elastic pieces 11, the corresponding movable plates 205 on the two sides of the brake disc 4 are not at the same height, connecting plates 206 are arranged in the through grooves 204, the connecting plates 206 are fixedly arranged at the bottom ends of the movable plates 205, movable arms 207 are fixedly arranged at the bottom ends of the connecting plates 206, one end of the movable arm 207 is connected with the monitoring assembly 3 through a connecting assembly 5, the other end of the movable arm 207 is fixedly connected with a fixed plate 7 through an elastic piece 6, and the end, away from the elastic piece 6, of the fixed plate 7 is fixedly connected with the side wall of the brake caliper 1. The brake disc 4 is braked by the brake pad assemblies 2 arranged on the two sides of the brake caliper 1, the wear of the abrasive parts 202 is monitored by the movable plates 205 and the monitoring assemblies 3, the corresponding movable plates 205 on the two sides of the brake disc 4 are not at the same height, so that the corresponding movable plates 205 on the two sides of the brake disc 4 can monitor different heights of the same brake disc 4 when the brake pad assemblies 2 brake the brake disc 4, and whether the brake pad assemblies 2 are inclined can be determined.

[0044] Specifically, the monitoring assembly 3 comprises a fixed box 301 fixedly connected to the end of the brake caliper 1, a plug hole 302 is formed in the side bottom end of the fixed box 301 in penetration, a plug rod 303 is arranged in the plug hole 302 in penetration, an L-shaped connecting arm 304 is fixedly arranged at the end, away from the fixed box 301, of the plug rod 303, and the end, away from the fixed box 301, of the connecting arm 304 is connected with the end of the movable arm 207. The connecting arm 304 is arranged, so that the movable block can drive the connecting arm 304 to move through the connecting plate 206 when the movable block moves, and the connecting arm 304 can drive the plug rod 303 to move in the fixed box 301 through the plug hole 302.

[0045] Specifically, the monitoring assembly 3 further comprises a sliding seat 305 arranged in the fixed box 301, a sliding hole 306 is arranged in the middle of the sliding seat 305, the diameter of the sliding hole 306 is matched with the plug rod 303, one side of the sliding seat 305 is connected with a limiting ring 307 through a sleeve, the limiting ring 307 is connected with the plug rod 303 through a locking assembly, one side of the sliding seat 305 is fixedly provided with an extension plate 308, one side of the extension plate 308 is provided with a touch switch 309, and the touch switch 309 is fixedly arranged in the fixed box 301; one side of the sliding seat 305 is fixedly provided with an indicating block 310, a sliding groove 311 in strip structure is arranged in the middle of one side of the fixed box 301, and the indicating block 310 is arranged in the sliding groove 311, and the sliding groove 311 is provided with scale lines 312 on the two sides of the groove.

[0046] The locking assembly is an electromagnetic bolt, and by arranging the indicating block 310 and the scale lines 312, the position of the sliding seat 305 can be monitored, so that the wear condition of the brake pad assembly 2 can be monitored.

[0047] Specifically, an adjusting screw hole 313 is arranged in the middle of the sliding seat 305, an adjusting screw rod 314 is arranged in the adjusting screw hole 313, one end of the adjusting screw rod 314 is arranged in the inner wall of the fixed box 301 through a bearing, and the other end of the adjusting screw rod 314 is provided with an adjusting knob. The adjusting knob can drive the adjusting screw rod 314 to rotate, and the adjusting screw rod 314 cooperates with the adjusting screw hole 313, so that the initial position of the sliding seat 305 can be adjusted, thereby realizing zero setting when the device is installed.

[0048] Specifically, the depth of the groove 203 is greater than the thickness of the movable plate 205, and the width of the through groove 204 is greater than the thickness of the connecting plate 206. By arranging the depth of the groove 203, the movable plate 205 can have an activity in the groove 203, and by arranging the width of the through groove 204, the connecting plate 206 can have an activity in the through groove 204.

[0049] Specifically, the connecting assembly 5 comprises a fine adjustment screw hole 502 arranged in the end of the connecting arm 304 away from the plug rod 303, a fine adjustment screw rod 503 arranged in the fine adjustment screw hole 502, a connecting rod 504 movably arranged at one end of the fine adjustment screw rod 503 through a bearing, and the end of the connecting rod 504 is connected with the end of the movable arm 207, and the two ends of the movable arm 207 are both provided with a connecting sleeve 501; one of the connecting sleeves 501 is fixedly connected with the telescopic piece 6, and the other connecting sleeve 501 is inserted with the connecting rod 504.

[0050] By rotating the fine adjustment screw 503, the position between the fine adjustment screw 503 and the movable arm 207 is adjusted, so that the distance between the movable arm 207 and the connecting arm 304 is adjusted, because the movable arm 207 can drive the sliding seat 305 to move, and the monitoring assembly 3 detects the wear of the brake pad assembly 2 according to the position of the sliding seat 305, so rotating the fine adjustment screw 503 can realize the adjustment of the monitoring range of the device.

[0051] Specifically, a positioning hole 505 is formed through one side of the connecting sleeve 501 connected with the connecting rod 504, a positioning screw is arranged through the inside of the positioning hole 505, and an array of screw holes matched with the positioning screw is formed through one end of the outer side wall of the connecting rod 504. By arranging the positioning screw and the positioning hole 505, the positioning screw can pass through the positioning hole 505, so that the position between the connecting rod 504 and the connecting sleeve 501 is fixed.

[0052] Specifically, the outer side wall of the fixed box 301 is fixedly provided with a mounting seat 8 at the top end, and a mounting bolt 9 is arranged through a screw hole formed in the middle of the mounting seat 8. The outer side of the mounting bolt 9 is sleeved with a fixing seat 10, and the fixing seat 10 is fixedly arranged at the end of the brake caliper 1. By arranging the fixing seat 10 and the mounting seat 8, the mounting of the monitoring assembly 3 can be realized.

[0053] Specifically, the outer side of the movable plate 205 is flush with the outer side of the frosted part 202, and the strength of the movable plate 205 is higher than that of the frosted part 202. Because the strength of the movable plate 205 is higher than that of the frosted part 202, the wear of the movable plate 205 during braking is much lower than that of the frosted part 202.

[0054] Specifically, the elastic member 11 is a thrust spring, one end of the thrust spring is fixedly connected with the rear side of the movable plate 205, and the end of the thrust spring away from the movable plate 205 is fixedly connected with the groove bottom of the groove 203.

[0055] By arranging the thrust spring, the movable plate 205 can be kept in close contact with the brake disc 4 during braking, and when the movable plate 205 moves, the through slot 204 limits the connecting plate 206, so that the movable plate 205 and the groove 203 are prevented from being separated.

[0056] The locking assembly is an electromagnetic bolt. In the initial state, the electromagnetic bolt is in a locked state with the limiting ring 307 and the plug rod 303. The inner wall of the brake caliper 1 is provided with a piston, and the number of the piston is two. The ends of the two pistons away from the brake caliper 1 are respectively connected with the two brake pad assemblies 2. The brake caliper 1 is provided with a control system, and the control system controls the electrical elements in the device.

[0057] When it is necessary to zero the indicating block 310, the control system controls the electromagnetic plug to retract, so that the limiting ring 307 is in a non-locking state with the plug rod 303, and then the adjusting knob is adjusted to drive the adjusting screw 314 to rotate, the adjusting screw 314 cooperates with the adjusting screw hole 313 on the sliding seat 305, so that the initial position of the sliding seat 305 can be adjusted, so that the zero adjustment of the device during installation can be realized. After zero adjustment is completed, the electromagnetic plug is ejected so that the limiting ring 307 is in a locking state with the plug rod 303.

[0058] In use, the brake caliper 1 is symmetrically provided with brake pad assemblies 2 inside, and the two brake pad assemblies 2 are respectively located on both sides of the brake disc 4. When braking, the control system controls the two pistons inside the brake caliper 1 to elongate, and the pistons respectively push the corresponding base discs in the direction of the brake disc 4 during elongation, so that the two base discs are finally attached to the surface of the brake disc 4. At this time, the brake pad assembly 2 rubs with the surface of the brake disc 4, and at this time the brake disc 4 achieves the braking effect under the action of friction. In the braking process, the abrasive part 202 in the brake pad assembly 2 is worn due to friction, and the thickness of the abrasive part 202 changes. At this time, the monitoring assembly 3 can monitor the thickness of the abrasive part 202 to achieve the effect of monitoring the wear of the brake pad assembly 2.

[0059] In the braking process, the piston in the brake caliper 1 pushes the base 201 to move in the direction of the brake disc 4, and the base 201 drives the abrasive part 202 to move, so that one side of the abrasive part 202 is attached to the surface of the brake disc 4. In this process, the base 201 synchronously drives the movable plate 205 to move in the direction of the brake disc 4 through the elastic element 11, so that the movable plate 205 moves synchronously with the abrasive part 202. Because the strength of the movable plate 205 is higher than that of the abrasive part 202, the wear of the movable plate 205 during braking is much lower than that of the abrasive part 202, so that the movable plate 205 is attached to the surface of the brake disc 4 before the abrasive part 202 after the abrasive part 202 is worn.

[0060] In the process of moving the movable plate 205 to the brake disc 4, the movable plate 205 drives the movable arm 207 to move to the direction of the brake disc 4 through the connecting plate 206, since one end of the movable arm 207 is connected with the connecting arm 304 through the connecting assembly 5, and the other end of the movable arm 207 is connected with the fixed plate 7 through the telescopic piece 6 (the telescopic piece 6 can be an elastic telescopic rod), so that in the process of moving the movable arm 207 to the direction of the brake disc 4, the movable arm 207 drives the telescopic piece 6 to elongate to the direction of the brake disc 4, the movable arm 207 drives the connecting arm 304 to move to the direction of the brake disc 4 through the connecting assembly 5, the connecting arm 304 drives the limiting ring 307 to move to the direction of the brake disc 4 through the inserting rod 303, the limiting ring 307 drives the sliding seat 305 to move through the sleeve, the sliding seat 305 drives the indicating block 310 and the extension plate 308 to move in the process of moving, and the indicating block 310 moves in the sliding groove 311. When the movable plate 205 contacts the surface of the brake disc 4, the control system records the position of the indicating block 310 at this time, and the numerical value of this position is set as a first numerical value.

[0061] Since the strength of the movable plate 205 is higher than that of the sanding part 202, the wear of the movable plate 205 in the braking process is much lower than that of the sanding part 202, so that after the movable plate 205 is combined with the surface of the brake disc 4, since the depth of the groove 203 is greater than the thickness of the movable plate 205, the movable plate 205 will compress the elastic piece 11 as the piston continues to elongate, so that the movable plate 205 gradually moves to the deep part of the groove 203, and finally the outer side surface of the movable plate 205 is flush with the outer side surface of the sanding part 202; since the width of the through groove 204 is greater than the thickness of the connecting plate 206, so that in the process of moving the movable plate 205 to the deep part of the groove 203, the connecting plate 206 is simultaneously driven to move to the deep part of the groove 203, the connecting plate 206 is simultaneously driven to move to the deep part of the groove 203 in the process of moving the connecting plate 206 to the deep part of the groove 203, the movable arm 207 is simultaneously driven to move away from the brake disc 4, in this process, the movable arm 207 extrudes the telescopic piece 6 to contract, and the movable arm 207 drives the connecting arm 304 to move away from the brake disc 4 through the connecting assembly 5, the connecting arm 304 drives the limiting ring 307 to move away from the brake disc 4 through the inserting rod 303, the limiting ring 307 drives the sliding seat 305 to move through the sleeve, the sliding seat 305 drives the indicating block 310 and the extension plate 308 to move in the process of moving, and the indicating block 310 moves in the sliding groove 311. When the outer side surface of the movable plate 205 is flush with the outer side surface of the sanding part 202, the control system records the position of the indicating block 310 at this time, and the numerical value of this position is set as a second numerical value; the wear value of the sanding part 202 is obtained by subtracting the second numerical value from the first numerical value.

[0062] When the wear condition of the abrasive portion 202 is more serious, the thickness of the abrasive portion 202 is thin, and when the surface of the abrasive portion 202 and the movable plate 205 is in contact with the brake disc 4, the movement amplitude of the movable plate 205 in the groove 203 is large, and since the depth of the groove 203 is greater than the distance from the movable plate 205 to the brake disc 4, the movable plate 205 drives the connecting arm 304 to move through the connecting assembly 5 during the movement of the movable plate 205 to the deep part of the groove 203, the connecting arm 304 drives the sliding seat 305 to move to the direction of the touch switch 309, and the sliding seat 305 drives the indicating block 310 and the extension plate 308 to move synchronously during the movement of the sliding seat 305. Since the depth of the groove 203 is greater than the distance from the movable plate 205 to the brake disc 4, and the wear condition of the abrasive portion 202 is more serious, the movement amplitude of the extension plate 308 moving to the direction of the touch switch 309 is large, and finally the extension plate 308 is in contact with the touch switch 309. At this time, the touch switch 309 is closed, and at this time, the touch switch 309 can connect the alarm circuit connected thereto to prompt the user to replace the brake pad assembly 2.

[0063] Since the corresponding movable plates 205 on both sides of the brake disc 4 are not at the same height as the abrasive portion 202, when the brake pad assembly 2 brakes the brake disc 4, the parts of the movable plates 205 on both sides of the brake disc 4 in contact with the abrasive portion 202 and the brake disc 4 are also not at the same height (as Figure 13 The monitoring assembly 3 on both ends of the brake caliper 1 can monitor the distance from the movable plate 205 to the fixed plate 7 and the distance from the movable plate 205 to the connecting arm 304, and the control system can monitor the values detected by the monitoring assembly 3 on both ends of the brake caliper 1 to determine whether the installation of the brake assembly is skewed. When the control system detects that the values detected by the monitoring assembly 3 on both ends of the brake caliper 1 are different, it indicates that the installation of the brake pad assembly 2 on both sides of the brake disc 4 is skewed, that is, the distance from the movable arm 207 to the fixed plate 7 is not equal to the distance from the movable arm 207 to the connecting arm 304, so the distance between the connecting arm 304 and the movable arm 207 needs to be adjusted. By rotating the fine adjustment screw 503, the position between the fine adjustment screw 503 and the movable arm 207 is adjusted, so that the distance between the movable arm 207 and the connecting arm 304 is adjusted, and when the distance from the movable arm 207 to the fixed plate 7 is equal to the distance from the movable arm 207 to the connecting arm 304, the position between the fine adjustment screw 503 and the movable arm 207 is locked by the positioning screw passing through the positioning hole 505 on the connecting sleeve 501 and the screw hole on the connecting rod 504.

[0064] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that the technical solutions described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalent features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A monitoring device for a brake pad of a vehicle brake, characterized by: The brake caliper and the brake disc are included, the brake caliper is internally symmetrical with brake pad assemblies, two brake pad assemblies are respectively located on both sides of the brake disc, the contact parts of the two brake pad assemblies and the brake disc are not at the same height, and the two ends of the brake caliper are provided with monitoring assemblies for monitoring the wear amount of the brake pad assemblies; the brake pad assembly comprises a base arranged in the brake caliper, the side, close to the brake disc, of the base is fixedly connected with abrasive parts arranged in an array, the middle part of the abrasive part is provided with a groove, the bottom of the abrasive part is provided with a through groove in communication with the groove, the inside of the groove is connected with a movable plate through an elastic element, the corresponding movable plates and abrasive parts on both sides of the brake disc are arranged at different heights, the inside of the through groove is provided with a connecting plate in penetration, the connecting plate is fixedly arranged at the bottom end of the movable plate, the bottom end of the connecting plate is fixedly provided with a movable arm, one end of the movable arm is connected with the monitoring assembly through a connecting assembly, the other end of the movable arm is fixedly connected with a fixed plate through an elastic element, and the end, away from the elastic element, of the fixed plate is fixedly connected with the side wall of the brake caliper; The monitoring assembly comprises a fixed box fixedly connected to the end of the brake caliper, a bushing is formed in the side bottom end of the fixed box in penetration, the inside of the bushing is provided with a plug rod in penetration, the end, away from the fixed box, of the plug rod is fixedly provided with a connecting arm in the shape of L, the end, away from the fixed box, of the connecting arm is connected with the end of the movable arm, a sliding seat arranged in the fixed box, a sliding hole is formed in the middle part of the sliding seat in penetration, the diameter of the sliding hole is matched with the plug rod, a limiting ring is connected to one side of the sliding seat through a sleeve, the limiting ring is connected with the plug rod through a locking assembly, an extension plate is fixedly arranged on one side of the sliding seat, a touch switch is arranged on one side of the extension plate, and the touch switch is fixedly arranged in the inside of the fixed box; an indicating block is fixedly arranged on one side of the sliding seat, a sliding groove in the shape of a strip is formed in the middle part of one side of the fixed box in penetration, the indicating block is arranged in the inside of the sliding groove in penetration, and scale lines are arranged on both sides of the groove opening of the sliding groove; The connecting assembly comprises a fine adjustment screw hole formed in the end, away from the plug rod, of the connecting arm in penetration, a fine adjustment screw rod is arranged in the inside of the fine adjustment screw hole in penetration, one end of the fine adjustment screw rod is movably provided with a connecting rod through a bearing, the end of the connecting rod is connected with the end of the movable arm, and the ends of the movable arm are provided with connecting sleeves in penetration; one of the connecting sleeves is fixedly connected with the elastic element, and the other connecting sleeve is inserted with the connecting rod.

2. A monitoring device for brake pads of a vehicle brake according to claim 1, characterized in that An adjusting screw hole is formed in the middle part of the sliding seat in penetration, an adjusting screw rod is arranged in the inside of the adjusting screw hole in penetration, one end of the adjusting screw rod is arranged in the inner wall of the fixed box in penetration through a bearing, and the end of the adjusting screw rod is provided with an adjusting knob.

3. A monitoring device of a brake pad of a vehicle brake according to claim 2, characterized in that: The depth of the groove is greater than the thickness of the movable plate, and the width of the through groove is greater than the thickness of the connecting plate.

4. A monitoring device of a brake pad of a vehicle brake according to claim 3, characterized in that: A positioning hole is formed in one side of the connecting sleeve in penetration, a positioning screw rod is arranged in the inside of the positioning hole in penetration, and an array of screw holes matched with the positioning screw rod is formed in one end of the outer side wall of the connecting rod in penetration.

5. A monitoring device of a brake pad of a vehicle brake according to claim 4, characterized in that: Mounting seats are fixedly arranged on the top ends of the outer side walls of the fixed box, mounting bolts are arranged in the screw holes formed in the middle parts of the mounting seats in penetration, fixed seats are sleeved on the outer sides of the mounting bolts, and the fixed seats are fixedly arranged on the ends of the brake caliper.

6. A monitoring device of a brake pad of a vehicle brake according to claim 5, characterized in that: The outer side of the movable plate is flush with the outer side of the abrasive part, and the strength of the movable plate is higher than that of the abrasive part.

7. A monitoring device of a brake pad of a vehicle brake according to claim 6, characterized in that: The elastic member is a thrust spring, one end of the thrust spring is fixedly connected with the rear side of the movable plate, and the end of the thrust spring away from the movable plate is fixedly connected with the groove bottom of the groove.

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