Automotive electromagnetic brake with cam capable of being manually released

Abstract

The embodiment of the utility model discloses a vehicle electromagnetic brake with a manually released cam, and relates to the field of electromagnetic brake structures, the vehicle electromagnetic brake with the manually released cam comprises a friction disc, a brake disc, an armature, a magnet yoke, a release plate and a release rod; the middle of the magnet yoke is sleeved with a gear sleeve, the armature and the brake disc are sequentially arranged on the outer side of the gear sleeve in a sleeved mode, and the brake disc and the gear sleeve are in radial transmission and axial sliding connection. The release plate is mounted at the bottom of the magnet yoke through a bolt, and one end of the release plate is rotationally connected with the release rod, so that the release rod rotates on the release plate; an abutting part is arranged at the end, facing the magnet yoke, of the release rod, a cam curve is formed on the abutting part, and the abutting part abuts against the magnet yoke through the cam curve; therefore, the electromagnetic brake can be manually braked through mutual cooperation of the release rod and the release plate.

Description

Technical Field

[0001] The present application relates to the field of electromagnetic brake structures, and in particular to a vehicle electromagnetic brake with a manually released cam. Background Art

[0002] With the rapid development of modern industrial technology, electric motors and their supporting equipment are increasingly used in industrial automation, rail transportation, power transmission, and other fields. As a crucial component of the motor system, the performance of the electromagnetic brake directly impacts the safety, stability, and reliability of the entire system. The armature, a key component of the electromagnetic brake, has a significant impact on its overall performance due to its design, material, and performance. Therefore, research and innovation in electromagnetic brake armatures has significant practical significance and application value.

[0003] Electromagnetic brakes for electric vehicles are typically installed at the rear end of the electric vehicle's drive motor to hold the vehicle in place. When the vehicle starts, the electromagnetic brake is energized, disengaging the brake and allowing the motor to rotate, driving the vehicle. When the vehicle stops, the electromagnetic brake is de-energized to prevent it from rolling, immobilizing it.

[0004] Manual operation of existing electromagnetic brakes is cumbersome and complicated, and there is also a certain degree of instability during use, which makes it difficult to achieve effective braking by manual operation of the electromagnetic brake.

[0005] Therefore, how to realize the manual release function of the armature is an important technical problem that needs to be solved urgently. Utility Model Content

[0006] In order to solve the problems existing in the prior art, the utility model provides a cam manually released vehicle electromagnetic brake, wherein a cam manually released vehicle electromagnetic brake comprises a friction disc, a brake disc, an armature, a yoke, a release plate and a release lever;

[0007] The middle part of the magnetic 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;

[0008] The release plate is mounted on the bottom of the magnetic yoke by means of bolts, and one end of the release plate is rotatably connected to the release lever, so that the release lever rotates on the release plate;

[0009] The release lever is provided with an abutment portion at one end thereof facing the magnetic yoke, the abutment portion is formed with a cam curve, and the abutment portion abuts against the magnetic yoke via the cam curve;

[0010] When the release lever is rotated to one position on the release plate, the abutment pushes the armature to move toward the yoke, the brake disc is released, and braking stops; when the release lever is rotated to another position on the release plate, the abutment is disengaged from pushing the yoke, and the armature

[0011] Optionally, in some embodiments of the present application, bolt holes are provided on the yoke and the armature at positions corresponding to the bolts, and the bolts are located in the bolt holes, so that the yoke and the armature move along the bolts.

[0012] A limiting member is provided at one end of the bolt, and the limiting member limits the armature.

[0013] Optionally, in some embodiments of the present application, a release gap is formed between the yoke and the armature, and the abutting portion pushes the yoke to move in the direction of the armature through the release gap.

[0014] Optionally, in some embodiments of the present application, friction plates are provided on both sides of the brake disc, and the armature abuts against the brake disc through the friction plates.

[0015] Optionally, in some embodiments of the present application, a groove is provided on the magnetic yoke, a spring is provided in the groove, one end of the spring abuts against the magnetic yoke, and the other end of the spring abuts against the armature.

[0016] Optionally, in some embodiments of the present application, a through hole is provided on the release plate, the through hole is located in the middle of the release plate, and the release rod is rotatably connected to the release plate through the through hole.

[0017] Optionally, in some embodiments of the present application, a method of use is provided, the method of use comprising the following steps:

[0018] Step 1: Rotate the release lever. When the release lever is rotated toward the outside of the yoke, the abutting portion on the release lever abuts against the yoke, and the bolt drives the armature to move toward the yoke, releasing the brake disc and disengaging the braking process.

[0019] Step 2: Rotate the release lever and move it toward the center of the yoke. The abutment on the release lever will disengage from the abutment against the yoke. The armature will move toward the brake disc to fix the brake disc and complete the braking process.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The utility model realizes the manual release function of the electromagnetic brake through the cam manual release mechanism, thereby improving the flexibility and reliability of the brake;

[0022] 2. The utility model adopts a spring support structure to form a release gap, so that the armature and the yoke can move relative to each other, facilitating the braking and releasing process;

[0023] 3. The brake disc and friction disc of the utility model are reasonably arranged, the braking effect is stable and reliable, and it is easy to maintain and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. 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.

[0025] Figure 1 A schematic diagram of the overall structure of a vehicle electromagnetic brake with manual cam release provided in an embodiment of the present application;

[0026] Figure 2 A schematic diagram of the exploded structure of a vehicle electromagnetic brake with manual cam release provided in an embodiment of the present application;

[0027] Figure 3 A schematic diagram of the structure of the assembly of the release plate and the release lever provided in an embodiment of the present application;

[0028] Figure 4 A schematic cross-sectional view of a cam-manually released electromagnetic brake for a vehicle provided in an embodiment of the present application;

[0029] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle.

[0030] Description of reference numerals:

[0031] 1. Magnetic yoke; 2. Release plate; 3. Release lever; 4. Abutment; 5. Cam curve; 6. Armature; 7. Brake disc; 8. Bolt; 9. Limiting piece; 10. Release gap; 11. Friction plate; 12. Bolt hole; 13. Groove; 14. Through hole; 15. Friction disc; 16. Spring; 17. Compression spring. DETAILED DESCRIPTION

[0032] 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, not 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 are within the scope of protection of this application. It is understood that the drawings are only provided for reference and illustration purposes 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.

[0033] Specifically, if Figure 1 As shown, in an embodiment of the present application, a vehicle electromagnetic brake with a manual cam release is provided. The electromagnetic brake manually moves the armature 6 so that the armature 6 is close to the yoke 1 or the brake disc 7 on the electromagnetic brake, thereby braking the electromagnetic brake. The specific process is as follows:

[0034] The electromagnetic brake of the present application includes main parts such as a friction disc 15, a brake disc 7, an armature 6, a yoke 1, and a release plate 2 and a release rod 3. A gear sleeve is provided in the middle of the yoke 1, and the armature 6 and the brake disc 7 are sequentially sleeved on the outside of the gear sleeve, wherein the brake disc 7 is radially transmitted and axially slidably connected to the gear sleeve, wherein the release plate 2 is installed at the bottom position of the yoke 1, and a bolt 8 is provided on the release plate 2 in the direction toward the yoke 1. The bolt 8 and the release plate 2 can be fixedly connected or can be connected by a nut. In the present application, the bolt 8 is connected to the release plate 2 by a nut, so that the bolt 8 is installed on the release plate 2, and the yoke 1 is provided on the release plate 2. A bolt hole 12 is opened on the yoke 1 at a position corresponding to the bolt 8. In the embodiment of the present application, two bolts 8 are provided, and correspondingly, two bolt holes 12 are also provided. The diameter of the bolt hole 12 is larger than the diameter of the bolt 8, so that the yoke 1 can be sleeved outside the bolt 8 through the bolt hole 12, wherein a straight line formed by the positions of the two bolts 8 passes through the center of the yoke 1.

[0035] An armature 6 is also provided on the yoke 1. The armature 6 is placed on one side of the yoke 1 relative to the release plate 2. A bolt hole 12 is provided on the armature 6 at a position corresponding to the bolt 8. The bolt 8 is located in the bolt hole 12, so that the armature 6 can move on the bolt 8 along the direction in which the bolt 8 is set, wherein the radius of the bolt hole 12 on the armature 6 is larger than the radius of the corresponding bolt hole 12 on the yoke 1, and a compression spring 17 is provided in the bolt hole 12 on the armature 6, one end of the compression spring 17 abuts against the yoke 1, and the other end abuts against the limit member 9 through a spring 16 washer, so that the armature 6 is limited on the yoke 1 by the bolt 8, and both the yoke 1 and the armature 6 move along the direction in which the bolt 8 is set.

[0036] In the embodiment of the present application, the limiting member 9 on the bolt 8 is configured as a bolt cap.

[0037] A narrow release gap 10 is formed between the armature 6 and the yoke 1. The release gap 10 is supported by a spring 16 on the yoke 1. Specifically,

[0038] A plurality of grooves 13 are provided on the yoke 1 in the direction toward the armature 6. The plurality of grooves 13 are arranged in an annular manner on the yoke 1. In the embodiment of the present application, there are 10 grooves 13, and the 10 grooves 13 are evenly arranged on the yoke 1. A spring 16 is placed in each of the grooves 13. The spring 16 abuts against the armature 6 on one side of the yoke 1 in the groove 13, so that a small release gap 10 is formed between the armature 6 and the yoke 1. Figure 5 shown.

[0039] Setting the release gap 10 allows the armature 6 and the yoke 1 to move relative to each other. The movement process is achieved through the cooperation of the release plate 2 and the release rod 3. When the release rod 3 is rotated to a position by the operator, the cam curve 5 on the abutting portion 4 on the release rod 3 abuts the yoke 1, and the nut on the matching bolt 8 drives the armature 6 to move toward the yoke 1. The distance it moves is the distance of the release gap 10 between the yoke 1 and the armature 6.

[0040] Since the brake disc 7 is arranged on one side of the armature 6 relative to the yoke 1, when the armature 6 moves toward the yoke 1, the armature 6 loses control of the brake disc 7, so that the brake disc 7 is released, thereby facilitating the rotation of the motor shaft on the electromagnetic brake and canceling the braking process.

[0041] In the above structure, an abutment portion 4 is provided on the release lever 3 at one end position corresponding to the magnetic yoke 1, and a cam curve 5 is provided on the abutment portion 4. The cam curve 5 is an arc-shaped structure, and the raised portion abuts against an angular position of the magnetic yoke 1, so that when the release lever 3 rotates, the cam curve 5 on the abutment portion 4 can provide good abutment support to the magnetic yoke 1, thereby facilitating the movement of the armature 6.

[0042] At the same time, in the above structure, a friction disc 15 is further provided outside the brake disc 7, and friction plates 11 are provided on both sides of the brake disc 7. The brake disc 7 and the friction disc 15 can abut against the friction disc 15 under the push of the armature 6, so that the brake disc 7 brakes the friction disc 15. The specific process is as follows:

[0043] When the release lever 3 is rotated to another position, the abutment 4 on the release lever 3 will disengage from the push on the yoke 1, and the armature 6 mounted on the bolt 8 will move toward the brake disc 7 under the action of the spring 16, so that the armature 6 abuts against the brake disc 7, making the brake disc 7 unable to rotate, thereby realizing the braking process.

[0044] In an embodiment of the present application, a through hole 14 is further provided on the release plate 2 , and the through hole 14 is specifically located in the middle position of the release plate 2 . The release rod 3 is rotatably connected to the release plate 2 through the through hole 14 to facilitate the rotation of the release rod 3 on the yoke 1 .

[0045] In this application, a method for using a cam-manually released electromagnetic brake for a vehicle is also provided, comprising the following steps:

[0046] Step 1: Rotate the release lever 3. When the release lever 3 is rotated toward the outside of the yoke 1, the abutting portion 4 on the release lever 3 abuts the yoke 1, and the bolt 8 drives the armature 6 to move toward the yoke 1, releasing the brake disc 7 and disengaging the braking process.

[0047] Step 2: Rotate the release lever 3 and move it toward the center of the yoke 1. The abutment 4 on the release lever 3 will disengage from the abutment against the yoke 1. The armature 6 will move toward the brake disc 7 to fix the brake disc 7 and complete the braking process.

[0048] The above structure can be directly applied to the automobile electromagnetic brake structure.

[0049] The above embodiments are only used to illustrate the technical method of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A cam manually released electromagnetic brake for a vehicle, characterized in that: It includes a friction disc, a brake disc, an armature, a yoke, a release plate and a release lever; The middle part of the magnetic 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 release plate is mounted on the bottom of the magnetic yoke by means of bolts, and one end of the release plate is rotatably connected to the release lever, so that the release lever rotates on the release plate; The release lever is provided with an abutment portion at one end thereof facing the magnetic yoke, the abutment portion is formed with a cam curve, and the abutment portion abuts against the magnetic yoke via the cam curve; When the release lever rotates to one position on the release plate, the abutment portion pushes the armature to move toward the yoke, the brake disc is released, and braking stops; when the release lever rotates to another position on the release plate, the abutment portion disengages from pushing the yoke, the armature moves toward the brake disc, the brake disc is fixed, and braking is achieved.

2. The cam manually released electromagnetic brake for a vehicle according to claim 1, characterized in that: Bolt holes are provided on the yoke and the armature at positions corresponding to the bolts, and the bolts are located in the bolt holes, so that the yoke and the armature move along the bolts; A limiting member is provided at one end of the bolt, and the limiting member limits the armature.

3. The cam manually released electromagnetic brake for a vehicle according to claim 2, characterized in that: A release gap is formed between the yoke and the armature, and the abutting portion pushes the yoke to move toward the armature through the release gap.

4. The cam manually released electromagnetic brake for a vehicle according to claim 1, characterized in that: Friction plates are provided on both sides of the brake disc, and the armature abuts against the brake disc through the friction plates.

5. The cam manually released electromagnetic brake for a vehicle according to claim 1, characterized in that: A groove is provided on the magnetic yoke, and a spring is provided in the groove. One end of the spring abuts against the magnetic yoke, and the other end of the spring abuts against the armature.

6. The cam manually released electromagnetic brake for a vehicle according to claim 1, characterized in that: A through hole is provided on the release plate, and the through hole is located in the middle of the release plate. The release rod is rotatably connected to the release plate through the through hole.

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