Automotive silent electromagnetic brake capable of being released by drawing wire

Abstract

The embodiment of the utility model discloses an automotive silent electromagnetic brake released by a drawn wire, a gear sleeve is sleeved in the middle of a magnet yoke in the automotive silent electromagnetic brake released by the drawn wire, an armature and a brake disc are sequentially sleeved on the outer side of the gear sleeve, and the brake disc and the gear sleeve are in radial transmission and axial sliding connection; the outer edge of the friction disc is connected to one side of the magnet yoke through a plurality of first bolts; the rod part of the first bolt between the magnet yoke and the friction disc is sleeved with a spacer bush; the outer edge of the armature is in sliding connection with the spacer bush; the magnet yoke is provided with at least two release screws corresponding to the armatures, the head portions of the release screws are located on one sides of the armatures, and the rod portions of the release screws penetrate through the armatures and the magnet yoke, stretch out of the outer side of the magnet yoke and are fixedly connected with the wiredrawing release mechanism. The brake disc can be locked or released by adjusting the air gap.

Description

Technical Field

[0001] The present application relates to the technical field of electromagnetic brakes, and in particular to a silent electromagnetic brake for vehicles with wire drawing release. Background Art

[0002] With the continuous development of industrial technology and the increasing requirements of mechanical equipment for precision and efficiency, braking technology, as one of the key technologies for controlling the motion state of mechanical equipment, has received extensive attention and research. As an important braking device, electromagnetic brakes have been widely used in many fields with their unique advantages. However, traditional electromagnetic brakes still have certain limitations in terms of structure, performance and service life, and cannot meet the needs of modern industry for high-precision and high-efficiency braking technology. Therefore, technical improvement and innovation of electromagnetic brakes have important practical significance and application value.

[0003] Electromagnetic brake is a device that uses electromagnetic force to achieve braking function. It is mainly composed of electromagnet, brake disc, brake spring and other components. When the electromagnet is energized, the electromagnetic force generated attracts the brake disc, making the brake disc fit tightly with the brake hub, thereby achieving the braking function. Electromagnetic brake has the advantages of simple structure, fast response speed and large braking torque, so it has been widely used in many fields.

[0004] Electromagnetic brakes for electric vehicles are usually installed at the rear end of the electric vehicle drive motor to park the vehicle. When the vehicle starts, the electromagnetic brake is energized at the same time, and the electromagnetic brake is in a disengaged and released state, driving the motor to rotate and drive the vehicle to work; when the vehicle stops, in order to prevent the vehicle from sliding, the electromagnetic brake is powered off, the electromagnetic brake is in a braking state, and the vehicle cannot move.

[0005] However, the traditional electromagnetic brake requires adjustment of the air gap during assembly and is not easy to assemble, resulting in a certain increase in production costs. Utility Model Content

[0006] In order to solve the problems existing in the prior art, the utility model provides a silent electromagnetic brake for a vehicle with wire drawing release. A spacer is provided between a yoke and a friction disc, and the brake disc can be locked or released by adjusting the air gap.

[0007] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0008] The present application provides a wire-drawing-released silent electromagnetic brake for a vehicle, which is characterized by comprising: a friction disc, a brake disc, an armature, a magnetic yoke, a coil, and a lead wire;

[0009] The middle part of the yoke is sleeved with a gear sleeve, and the armature and the brake disc are sleeved on the outside of the gear sleeve in sequence, wherein the brake disc and the gear sleeve are radially transmitted and axially slidably connected;

[0010] The outer edge of the friction disk is connected to one side of the yoke through a plurality of first bolts; the rod of the first bolt between the yoke and the friction disk is sleeved with a spacer;

[0011] The outer edge of the armature is slidably connected to the spacer; the coil is placed in the yoke and connected to the lead wire; at least two release screws are provided on the yoke corresponding to the armature, the head of the release screw is located on one side of the armature, the rod of the release screw passes through the armature and the yoke, extends out of the outside of the yoke, and is fixedly connected to the wire drawing release mechanism; a spring is sleeved on the outside of the rod of the release screw in the armature; a plurality of pre-tightening units and a plurality of buffering and silencing units are provided on the side of the yoke in contact with the friction disk.

[0012] Optionally, in some embodiments of the present application, a protective ring is provided on the outer side of the contact position between the magnetic yoke and the friction disk.

[0013] Optionally, in some embodiments of the present application, the pre-tensioning unit includes a pre-tensioning hole and a pre-tensioning spring, the pre-tensioning hole is arranged on a side surface of the yoke close to the friction disk, the pre-tensioning spring is installed in the pre-tensioning hole, and the pre-tensioning spring abuts against the yoke and the armature.

[0014] Optionally, in some embodiments of the present application, the buffering and silencing unit includes a buffering hole or a groove, a buffering ring is provided in the buffering hole or the groove, and the buffering ring abuts against the yoke and the armature.

[0015] Optionally, in some embodiments of the present application, the brake disc is connected to the gear sleeve via a spline.

[0016] Optionally, in some embodiments of the present application, a blocking block is provided on the outer side of the yoke corresponding to the gear sleeve.

[0017] Optionally, in some embodiments of the present application, the wire drawing release mechanism includes a release plate, and the release plate is an S-shaped structure; one end of the release plate is fixedly connected to the release screw, and the other end is connected to the wire drawer; an avoidance groove is provided on the release plate.

[0018] Optionally, in some embodiments of the present application, a plurality of mounting screws are provided on the friction disk.

[0019] The embodiment of the present application also provides a method for using a wire-released silent electromagnetic brake for a vehicle, which is performed by the wire-released silent electromagnetic brake for a vehicle as described above, and includes the following steps:

[0020] Preset the air gap between the armature and the yoke;

[0021] The friction disc is mounted on the flange of the motor;

[0022] The coil is energized, the yoke attracts the armature, and the brake disc is released;

[0023] When the coil is powered off, there is an air gap between the yoke and the armature, generating a braking torque and locking the brake disc;

[0024] The release screw is driven by the wire drawing to drive the yoke close to the armature, the air gap disappears, and the brake disc is released.

[0025] An embodiment of the present application also provides an application, which includes a method for using the wire-release vehicle silent electromagnetic brake as described above.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. In the embodiment of the present application, a spacer is provided. When the yoke is working on the armature, the spacer is provided between the yoke and the friction disc, and the brake disc can be locked or released by adjusting the air gap;

[0028] 2. The present application is provided with a pre-tightening unit and a buffering and silencing unit, which play a role of buffering and shock absorption to a certain extent. At the same time, during the operation of the electromagnetic brake, it can effectively reduce the braking and releasing noise and reduce noise pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 The overall structure of the vehicle-use silent electromagnetic brake with wire release provided in the embodiment of the present application is schematically shown. Figure 1 ;

[0031] Figure 2 The overall structure of the vehicle-use silent electromagnetic brake with wire release provided in the embodiment of the present application is schematically shown. Figure 2 ;

[0032] Figure 3 A schematic diagram of the side cross-section structure of a silent electromagnetic brake for a vehicle with wire drawing release provided in an embodiment of the present application;

[0033] Figure 4 for Figure 3 A schematic enlarged diagram of the structure at center A;

[0034] Figure 5A schematic diagram of the overall structure of a silent electromagnetic brake for a vehicle with wire drawing release provided in an embodiment of the present application without the friction plate;

[0035] Figure 6 for Figure 5 A schematic enlarged view of the structure at point B in the middle.

[0036] Description of reference numerals:

[0037] 100, yoke; 110, gear sleeve; 120, release screw; 130, retaining ring; 140, spline; 150, blocking block; 200, friction disc; 210, first bolt; 211, spacer; 220, mounting screw; 300, brake disc; 400, armature; 410, spring; 500, lead wire; 600, preload unit; 610, preload hole; 620, preload spring; 700, buffer silent unit; 710, buffer hole; 720, buffer ring; 800, release plate; 810, avoidance groove. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the present application. It is understood that the drawings are only provided for reference and illustration, and are not used to limit the present application. The connection relationship shown in the drawings is only for the convenience of clear description and does not limit the connection method.

[0039] In the embodiment of the present application, a silent electromagnetic brake for a vehicle with wire drawing release is provided, such as Figure 1-Figure 3 As shown, the silent electromagnetic brake for a vehicle includes an armature 400, a yoke 100 and a wire drawing release mechanism, wherein the yoke 100 is arranged at the lowest position, the armature 400 is arranged on the yoke 100, the armature 400 and the yoke 100 are connected by a release screw, two release screws 120 are arranged, the head positions of the two release screws 120 are arranged at one side of the armature 400, the tail of the release screw 120 passes through the yoke 100 and extends out of the yoke 100, and the release screw 120 passes through the yoke 100. The yoke 100 is connected to the wire drawing release mechanism, so that the wire drawing release mechanism, the yoke 100, and the armature 400 are matched and connected, wherein a spring 410 is mounted on the outside of the rod of the release screw 120 in the armature 400, and the wire drawing release mechanism includes a release plate 800 and a wire drawer. In the embodiment of the present application, one end of the release plate 800 is fixedly connected to the tail of the release screw 120, and the other end of the release plate 800 is connected to the wire drawer to form the wire-released silent electromagnetic brake for vehicles.

[0040] Among them, the release plate 800 is an S-shaped structure, and an avoidance groove 810 is also arranged on the release plate 800. The avoidance groove 810 is mainly used to protect the cable and reduce interference. In addition, the avoidance groove 810 can also reduce the vibration and noise generated by the motor during operation. These functions ensure the stability and safety of the electromagnetic brake during use.

[0041] On the basis of the above structure, the electromagnetic brake is further provided with a friction disc 200 and a brake disc 300. The outer edge of the friction disc 200 is connected to one side of the yoke 100 through a plurality of first bolts 210. The rod of the first bolt 210 between the yoke 100 and the friction disc 200 is sleeved with a spacer sleeve 211.

[0042] In the above structure, the friction disc 200 is connected to the yoke 100 by the first bolt 210, and the specific connection method is: the friction disc 200 is limited at the head position of the first bolt 210, so that the friction disc 200 is matched and connected with the yoke 100 through the first bolt 210, and the spacer 211 is arranged between the yoke 100 and the friction disc 200, and the two ends of the spacer 211 are abutted against the friction disc 200 and the yoke 100, wherein an armature 400 is arranged between the friction disc 200 and the yoke 100, and the outer edge of the armature 400 is slidably connected with the spacer 211, so that the armature 400 interacts between the friction disc 200 and the yoke 100, and in the embodiment of the present application, the setting of the spacer 211 can control the occurrence of an air gap, specifically, the armature 400 and the yoke An air gap is formed between 100, and the air gap can generate torque for the braking process of the electromagnetic brake, and the torque is the braking torque. The occurrence of the braking torque will affect the operating performance of the electromagnetic brake, and the friction disc 200 is installed on the flange of the motor; a coil is arranged in the yoke 100, and the coil is placed in the yoke 100 and is connected with a lead wire 500; the air gap between the armature 400 and the yoke 100 is preset, and when the coil is energized, the yoke 100 will attract the armature 400 to release the brake disc 300; when the coil is de-energized, there is an air gap between the yoke 100 and the armature 400, generating a braking torque, which will lock the brake disc 300; at this time, the release screw 120 is driven by the wire drawing to drive the yoke 100 close to the armature 400, and the air gap will disappear, thereby releasing the brake disc 300.

[0043] The above application can be processed by the spacer 211 in the electromagnetic brake, so as to lock and release the brake disc 300 through the air gap.

[0044] In an embodiment of the present application, a plurality of pre-tensioning units 600 are further provided on the yoke 100, and the pre-tensioning units 600 are specifically provided at a side position where the yoke 100 contacts the friction disk 200, wherein the pre-tensioning unit 600 includes a pre-tensioning hole 610, and the pre-tensioning hole 610 is provided at a side position on the yoke 100 in a direction toward the armature 400, and a pre-tensioning spring 620 is provided in the pre-tensioning hole 610, and the pre-tensioning spring 620 abuts against the yoke 100 and the armature 400.

[0045] In the embodiments of the present application, Figure 5-Figure 6 As shown, a plurality of buffer and silent units 700 are further provided on the yoke 100. The buffer and silent units 700 are specifically provided on one side where the yoke 100 contacts the friction disk 200. The buffer and silent units 700 include a buffer hole 710 or a buffer groove, and the buffer hole 710 or the buffer groove is provided on one side of the yoke 100 in the direction of the armature 400. A buffer ring 720 is provided in the buffer hole 710 or the buffer groove, and the buffer ring 720 abuts against the yoke 100 and the armature 400.

[0046] In the embodiment of the present application, a retaining ring 130 is provided on the outer side of the contact position between the yoke 100 and the friction disc 200 , and a gear sleeve 110 is also provided in the brake disc 300 . The gear sleeve 110 and the brake disc 300 are connected via a spline 140 .

[0047] A blocking block 150 is provided at an outer position of the yoke 100 and at a position corresponding to the gear housing 110 .

[0048] A plurality of mounting screws 220 are disposed on the friction disc 200 .

[0049] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.

Claims

1. A silent electromagnetic brake for a vehicle with wire drawing release, characterized in that: include: Friction disc, brake disc, armature, yoke, coil and lead wire; The middle part of the yoke is sleeved with a gear sleeve, and the armature and the brake disc are sleeved on the outside of the gear sleeve in sequence, wherein the brake disc and the gear sleeve are radially transmitted and axially slidably connected; The outer edge of the friction disk is connected to one side of the yoke through a plurality of first bolts; the rod of the first bolt between the yoke and the friction disk is sleeved with a spacer; The outer edge of the armature is slidably connected to the spacer; the coil is placed in the yoke and connected to the lead wire; at least two release screws are provided on the yoke corresponding to the armature, the head of the release screw is located on one side of the armature, the rod of the release screw passes through the armature and the yoke, extends out of the outside of the yoke, and is fixedly connected to the wire drawing release mechanism; a spring is sleeved on the outside of the rod of the release screw in the armature; a plurality of pre-tightening units and a plurality of buffering and silencing units are provided on the side of the yoke in contact with the friction disk.

2. The silent electromagnetic brake for vehicles with wire release according to claim 1, characterized in that: A guard ring is sleeved on the outer side of the contact position between the magnetic yoke and the friction disk.

3. The silent electromagnetic brake for vehicles with wire release according to claim 1, characterized in that: The preload unit comprises a preload hole and a preload spring. The preload hole is arranged on a side surface of the yoke close to the friction disk. The preload spring is installed in the preload hole. The preload spring abuts against the yoke and the armature.

4. The silent electromagnetic brake for vehicles with wire release according to claim 1, characterized in that: The buffer and silent unit comprises a buffer hole, in which a buffer ring is arranged, and the buffer ring abuts against the yoke and the armature.

5. The vehicle-use silent electromagnetic brake with wire release according to claim 1, characterized in that: The brake disc is connected to the gear sleeve via a spline.

6. The silent electromagnetic brake for vehicles with wire release according to claim 1, characterized in that: A blocking block is provided on the outer side of the magnetic yoke corresponding to the gear sleeve.

7. The silent electromagnetic brake for vehicles with wire release according to claim 1, characterized in that: The wire drawing release mechanism comprises a release plate, which is an S-shaped structure; one end of the release plate is fixedly connected to a release screw, and the other end is connected to a wire drawer; an avoidance groove is provided on the release plate.

8. The silent electromagnetic brake for vehicles with wire release according to claim 1, characterized in that: The friction disc is provided with a plurality of mounting screws.

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