An electromagnetic brake with a locking manual release structure

Abstract

The utility model relates to the technical field of brake, provide a kind of electromagnetic brake with locking type manual release structure, including release subassembly and the stator, armature, rotor and flange arranged in sequence, flange is fixedly connected with stator, release subassembly includes release bolt, reset spring, locking nut and end cover, release bolt passes through armature and stator in sequence, the counterbore for accommodating release bolt head is equipped on armature, reset spring is pressed into release bolt between head and stator, end cover is connected in release bolt and the one end of stator that protrudes, locking nut is connected on release bolt.The utility model is manually released, rotates locking nut, makes locking nut and stator abut, can limit release bolt and reset under the action of reset spring, locking release state, without operating personnel always exerting force on release bolt, operation is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of brake technology, and more specifically, to an electromagnetic brake with a locking manual release structure. Background Technology

[0002] Electromagnetic brakes, as core safety control components in transmission systems, are widely used in automotive parking, industrial motor braking, robot joint locking, and other fields. For power-off electromagnetic brakes, in order to ensure that the brake can be released in emergency situations (power failure or malfunction), a manual release structure is usually set on the brake to allow the brake to switch to the released state without power being supplied.

[0003] Currently, commonly used manual release mechanisms typically utilize a release lever to directly pull the armature (or use a lever principle to displace the release lever and pull the armature), separating the armature from the friction assembly and thus releasing the brake (i.e., manually releasing the brake). However, most existing release mechanisms require the operator to continuously apply force after release to maintain the released state, making operation inconvenient. Utility Model Content

[0004] The purpose of this invention is to provide an electromagnetic brake with a locking manual release structure to solve the above-mentioned defects of the prior art.

[0005] This utility model is achieved through the following technical solution: An electromagnetic brake with a locking manual release structure includes a release assembly and a stator, an armature, a rotor, and a flange arranged in sequence. The flange is fixedly connected to the stator. The release assembly includes a release bolt, a return spring, a locking nut, and an end cap. The release bolt passes through the armature and the stator in sequence. The armature has a countersunk hole for accommodating the head of the release bolt. The return spring is pressed between the head of the release bolt and the stator. The end cap is connected to the end of the release bolt that extends out of the stator. The locking nut is connected to the release bolt.

[0006] Optionally, a self-locking washer is fitted on the release bolt between the stator and the locking nut.

[0007] Optionally, a locking nut is attached to the release bolt on the side of the locking nut away from the stator.

[0008] Optionally, the locking nut is a wing nut.

[0009] Optionally, the end cap and the release bolt are connected by threads.

[0010] Optionally, the stator is provided with a blind hole to accommodate the return spring.

[0011] Optionally, the flange and the stator are connected by connecting screws, and the connecting screws are fitted with positioning sleeves for limiting the distance between the flange and the stator.

[0012] Optionally, the armature is provided with a guide opening that mates with the positioning sleeve.

[0013] The technical solution of this utility model has at least the following advantages and beneficial effects: In this utility model, by holding the end cover and pulling the release bolt, the armature can be driven away from the rotor to achieve manual release (i.e., release the brake). After manual release, the locking nut is rotated so that the locking nut abuts against the stator, which can restrict the release bolt to reset under the action of the return spring and lock the release state. There is no need for the operator to apply force to the release bolt at all times, making the operation more convenient. Attached Figure Description

[0014] Figure 1 A schematic diagram of an electromagnetic brake with a locking manual release structure provided by this utility model; Reference numerals: 1-Stator, 101-Yoke, 102-Coil, 2-Armature, 3-Rotor, 4-Flange, 5-Release Bolt, 6-Locking Nut, 7-End Cap, 8-Anti-loosening Nut, 9-Self-locking Washer, 10-Connecting Screw, 11-Positioning Sleeve, 12-Reset Spring. Detailed Implementation

[0015] refer to Figure 1 An electromagnetic brake with a locking manual release structure includes a release assembly and a stator 1, an armature 2, a rotor 3, and a flange 4 arranged sequentially, with the flange 4 fixedly connected to the stator 1. Those skilled in the art will understand that the stator 1 consists of a magnetic yoke 101 and a coil 102 (hereinafter, "stator 1" refers to the magnetic yoke 101 unless otherwise specified). When the coil 102 is energized, the magnetic yoke 101 can attract the armature 2. Furthermore, those skilled in the art will understand that the stator 1 has a blind mounting hole (not shown), and a pressure spring (not shown) is installed in the blind mounting hole. The pressure spring is pressed between the bottom of the blind mounting hole and the armature 2 to provide braking force to the armature 2 in the de-energized state.

[0016] The release assembly includes a release bolt 5, a return spring 12, a locking nut 6, and an end cap 7. The release bolt 5 passes sequentially through the armature 2 and the stator 1. The armature 2 has a countersunk hole to accommodate the head of the release bolt 5. The return spring 12 is pressed between the head of the release bolt 5 and the stator 1, causing the release bolt 5 to maintain a tendency to move towards the rotor 3. Furthermore, the stator 1 has a blind hole to accommodate the return spring 12, preventing the return spring 12 from occupying axial installation space. The end cap 7 is connected to the end of the release bolt 5 that extends out of the stator 1, and the locking nut 6 is connected to the release bolt 5. Alternatively, in this embodiment, the end cap 7 and the release bolt 5 are connected by threads. In other embodiments, the end cap 7 can of course be connected to the release bolt 5 in other ways, such as by screws.

[0017] In practical applications, by holding the end cap 7 and pulling the release bolt 5, the armature 2 can be moved away from the rotor 3, achieving manual release (i.e., releasing the brake). After manual release, rotating the locking nut 6 causes it to abut against the stator 1, thus preventing the release bolt 5 from resetting under the action of the return spring 12 and locking it in the released state. This eliminates the need for the operator to constantly apply force to the release bolt 5, making operation more convenient. When the brake needs to work normally, loosening the locking nut 6 (even if it is moved away from the stator 1) causes the release bolt 5 to gradually reset under the action of the return spring 12, and the head of the release bolt 5 no longer applies force to the armature 2.

[0018] In this embodiment, a wing nut is selected as the locking nut 6. It is worth noting that when tightening the locking nut 6, it is also necessary to pull the end cap 7, that is, it requires two hands to operate at the same time. The selection of a wing nut for the locking nut 6 makes operation more convenient and avoids the need to hold the end cap 7 with one hand and look for a wrench with the other. In other embodiments, the locking nut 6 can of course be a regular nut, which can be turned with a wrench.

[0019] A self-locking washer 9 is fitted on the release bolt 5 between the stator 1 and the locking nut 6. Those skilled in the art should understand that the self-locking washer 9, also called an anti-loosening washer or anti-loosening gasket, is a fastener composed of two gaskets with radially raised patterns on the outer side and helical teeth on the inner side. Through its double-waist embedded structure, it achieves self-locking by utilizing the tension and the difference in helical tooth angle to generate a lifting force under vibration conditions, making it more reliable than the traditional single-waist friction anti-loosening mechanism.

[0020] A lock nut 8 is connected to the release bolt 5 on the side of the locking nut 6 away from the stator 1. After tightening the locking nut 6 to achieve the locked release state, loosen the release bolt 5, and then use a wrench to tighten the lock nut 8 (so that it abuts against the locking nut 6). It is worth noting that the lock nut 8 can be used in vibration environments to prevent the locking nut 6 from loosening due to high-frequency vibration, making the locked release state more reliable.

[0021] In this embodiment, flange 4 and stator 1 are connected by connecting screws 10. A positioning sleeve 11 is fitted onto the connecting screws 10. One end of the positioning sleeve 11 abuts against flange 4, and the other end abuts against stator 1, thus limiting the distance between flange 4 and stator 1. In practical applications, the distance between flange 4 and stator 1 can be adjusted by replacing positioning sleeves 11 of different lengths. Furthermore, armature 2 has a guide opening that mates with the positioning sleeve 11, which serves as a guide for the movement of armature 2. In this embodiment, the guide opening is a notch located on the side edge of armature 2. In other embodiments, the guide opening can, of course, be other structures, such as a through hole that mates with the positioning sleeve 11.

[0022] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An electromagnetic brake with a locking-type manual release structure, comprising a release assembly and a stator, an armature, a rotor, and a flange arranged sequentially, wherein the flange is fixedly connected to the stator, characterized in that, The release assembly includes a release bolt, a return spring, a locking nut, and an end cap. The release bolt passes through the armature and the stator in sequence. The armature has a countersunk hole to accommodate the head of the release bolt. The return spring is pressed between the head of the release bolt and the stator. The end cap is connected to the end of the release bolt that extends out of the stator. The locking nut is connected to the release bolt.

2. The electromagnetic brake with a locking manual release structure according to claim 1, characterized in that, A self-locking washer is fitted on the release bolt between the stator and the locking nut.

3. The electromagnetic brake with a locking manual release structure according to claim 1, characterized in that, An anti-loosening nut is attached to the release bolt on the side of the locking nut away from the stator.

4. The electromagnetic brake with a locking manual release structure according to claim 1, characterized in that, The locking nut is a wing nut.

5. The electromagnetic brake with a locking manual release structure according to claim 1, characterized in that, The end cap and the release bolt are connected by threads.

6. The electromagnetic brake with a locking manual release structure according to claim 1, characterized in that, The stator is provided with a blind hole to accommodate the return spring.

7. The electromagnetic brake with a locking manual release structure according to any one of claims 1-6, characterized in that, The flange and the stator are connected by connecting screws, and the connecting screws are fitted with positioning sleeves to limit the distance between the flange and the stator.

8. The electromagnetic brake with a locking manual release structure according to claim 7, characterized in that, The armature is provided with a guide opening that mates with the positioning sleeve.

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