Electromagnetic brake with manual release function for installation in small spaces

Abstract

The utility model discloses a kind of electromagnetic brake with manual release function convenient to install in narrow space, including shell, armature, brake disc, end cover, release plate and release screw, armature is located between shell and brake disc, brake disc is located between armature and end cover, electromagnetic coil and compression spring are installed in shell, and armature has the elasticity of compression spring, at least two release plates evenly distributed in circumferential direction are located between armature and end cover and located outside the outer periphery of brake disc, the screw rod of multiple release screws is sequentially connected with the release plate screw hole on release plate after passing through the shell through-hole on shell and the armature through-hole on armature.The utility model can achieve the purpose of releasing brake by rotating release screw after power failure of electromagnetic brake by increasing release plate and release screw, since release screw does not need to extend outside shell, so it will not occupy extra space, so that electromagnetic brake can be installed and applied in narrow space, meet the application demand of narrow space.

Description

Technical Field

[0001] This utility model relates to an electromagnetic brake, and more particularly to an electromagnetic brake with a manual release function that is easy to install in confined spaces. Background Technology

[0002] With the accelerating pace of electrification, more and more equipment requires electromagnetic brakes to replace traditional mechanical or hydraulic brakes. An electromagnetic brake is a braking device that uses electrical energy to brake or release the brake by controlling parameters such as voltage and current. Compared to traditional braking devices, electromagnetic brakes offer faster response times and simpler, more convenient control, making them suitable for modern motor drives and controls.

[0003] An electromagnetic brake with manual release function is an electromagnetic brake that can be manually released after power failure. The manual release function is to prevent the electromagnetic brake from being unable to perform its functions when it is in a braking state after power failure, which could cause safety issues for people and property.

[0004] Traditional electromagnetic brakes with manual release function generally use a handle as the control component. The handle is connected to the armature and its movement is controlled to release the brake. This handle control structure works fine in large spaces, but in confined spaces, the handle is too long (for easy operation) and extends out of the housing, making it difficult to install the brake. Simply reducing the handle size is not enough to solve the installation problem in confined spaces. Utility Model Content

[0005] The purpose of this invention is to provide an electromagnetic brake with manual release function that is easy to install in confined spaces in order to solve the above problems.

[0006] This utility model achieves the above objectives through the following technical solutions: An electromagnetic brake with manual release function, which is easy to install in confined spaces, includes a housing, an armature, a brake disc, and an end cap. The armature is located between the housing and the brake disc, and the brake disc is located between the armature and the end cap. An electromagnetic coil and a compression spring are installed inside the housing, and the compression spring exerts a spring force on the armature. The electromagnetic brake with manual release function, which is easy to install in confined spaces, also includes a release plate and release screws. At least two release plates, which are evenly distributed along the circumference, are located between the armature and the end cap and outside the outer periphery of the brake disc. The screws of a plurality of release screws pass sequentially through a housing through hole on the housing and an armature through hole on the armature and are connected to a release plate screw hole on the release plate.

[0007] Preferably, in order to enable the release plate to move more accurately and reliably in the axial direction of the central through hole of the armature, the release plate is an "L" shaped plate with a screw hole on one plate and the other plate in contact with the outer circumferential wall of the armature.

[0008] Preferably, in order to facilitate the installation of release screws and further save space, the position on the housing for setting the housing through hole is thinned towards the armature to form a mounting platform, and multiple housing through holes are respectively set on multiple mounting platforms.

[0009] Preferably, in order to facilitate the transmission connection between the brake disc and the rotating shaft, the brake disc is connected to and integrally formed with a cylindrical brake sleeve. The brake sleeve is located in the central through hole of the housing and is located outside the rotating shaft connecting cylinder and is mutually connected for transmission (the specific connection method is a conventional structure, depending on the needs).

[0010] The beneficial effects of this utility model are as follows: This invention adds a release plate and a release screw. After the electromagnetic brake loses power, rotating the release screw will cause the release plate to move, thereby pushing the armature to move away from the brake disc. After the armature moves, the brake disc is released, thus releasing the brake. Since the release screw does not need to extend outside the housing, it does not occupy extra space, allowing the electromagnetic brake to be installed and used in confined spaces, thus meeting the application requirements of confined spaces. Attached Figure Description

[0011] Figure 1 This is a perspective view of the electromagnetic brake with manual release function that is easy to install in a confined space, as described in this utility model. Figure 2 This is a perspective view of the release plate of the electromagnetic brake with manual release function, which is easy to install in a confined space according to the present invention. Figure 3 This is a front sectional view of the electromagnetic brake with manual release function that is easy to install in a confined space, as described in this utility model. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings: like Figures 1-3As shown, the electromagnetic brake with manual release function that is easy to install in a confined space according to this utility model includes a housing 1 (also called a stator housing), an armature 3, a brake disc 10, an end cover 5, a release plate 8, and release screws 7. The armature 3 is located between the housing 1 and the brake disc 10, and the brake disc 10 is located between the armature 3 and the end cover 5. An electromagnetic coil 9 and multiple compression springs 11 are installed inside the housing 1, and the multiple compression springs 11 have elastic force on the armature 3. At least two (two in the figure, but more can be possible) release plates 8, which are evenly distributed along the circumference, are located between the armature 3 and the end cover 5 and are located outside the outer periphery of the brake disc 10. The screws of the multiple release screws 7 pass through the housing through hole (not marked in the figure) on the housing 1 and the armature through hole (not marked in the figure) on the armature 3 in sequence and are connected to the release plate screw hole 82 on the release plate 8.

[0013] like Figures 1-3 As shown, this utility model also illustrates the following more optimized specific structures: In order to enable the release plate 8 to move more accurately and reliably in the axial direction of the central through hole of the armature 3, the release plate 8 is an "L" shaped plate with a release plate screw hole 82 on one plate 81 and the other plate 83 in contact with the outer circumferential wall of the armature 3.

[0014] To facilitate the installation of the release screw 7 and further save space, the housing 1 is thinned towards the armature 3 to form a mounting platform 6, and multiple housing through holes are respectively provided on multiple mounting platforms 6.

[0015] To facilitate the transmission connection between the brake disc 10 and the rotating shaft (not shown in the figure), the brake disc 10 is connected to the cylindrical brake sleeve 13 and integrally formed. The brake sleeve 13 is located in the central through hole of the housing 1 and is located outside the rotating shaft connecting cylinder 12 and is mutually connected (the specific connection method is a conventional structure, depending on the needs).

[0016] Figure 1 A plurality of locking screws 2 provided on the housing 1 are also shown. Figure 1 and Figure 3 Also shown are a number of mounting screws 4 on the end cap 5, which are all conventional adaptive structures.

[0017] like Figures 1-3As shown, in application, the rotating shaft connecting cylinder 12 is connected to the rotating shaft (generally the rotating shaft of a motor, but it can also be a drive shaft) via a keyway and key. During normal operation, the electromagnetic coil 9 is energized, generating electromagnetic attraction that overcomes the elastic force of the compression spring 11, causing the armature 3 to move closer to the housing 1 and away from the brake disc 10. At this time, the electromagnetic brake is in the released braking state, and the brake disc 10, brake sleeve 13, rotating shaft connecting cylinder 12, and rotating shaft can all rotate freely. When braking is required, the control electromagnetic coil 9 is de-energized, the electromagnetic attraction disappears, and under the elastic force of the compression spring 11, the armature 3 presses the brake disc 10 tightly against the end cover 5. At this time, it is in the braking state, and the brake disc 10... Brake sleeve 13, shaft connecting sleeve 12, and shaft cannot rotate. When the electromagnetic coil 9 loses power due to special reasons (such as a power outage), and it is necessary to release the brake for practical application needs, use a screwdriver or wrench to rotate the release screw 7, causing it to move the release plate 8 away from the brake disc 10 through the threaded connection. This achieves the function of manually releasing the brake. During this process, the release screw 7 needs to exert a reverse thrust to move the release plate 8. This reverse thrust comes from two sources: one is through the contact between the nut of the shorter release screw 7 and the surface of the mounting platform 6, such as... Figure 3 As shown in the corresponding structure of the release screw 7 on the left side, another method is to utilize the contact between the end of the longer release screw 7 and the surface of the end cap 5, as shown in the example. Figure 3 The corresponding structure of the release screw 7 on the right side is shown in the figure. The specific choice depends on the actual needs.

[0018] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. An electromagnetic brake with manual release function, easy to install in confined spaces, comprising a housing, an armature, a brake disc, and an end cap, wherein the armature is located between the housing and the brake disc, the brake disc is located between the armature and the end cap, and an electromagnetic coil and a compression spring are installed inside the housing, the compression spring having an elastic force on the armature, characterized in that: The electromagnetic brake with manual release function, which is easy to install in a confined space, also includes a release plate and release screws. At least two release plates, which are evenly distributed along the circumference, are located between the armature and the end cap and outside the outer periphery of the brake disc. The screws of the plurality of release screws pass through the housing through hole on the housing and the armature through hole on the armature in sequence and are connected to the release plate screw hole on the release plate.

2. The electromagnetic brake with manual release function that is easy to install in confined spaces according to claim 1, characterized in that: The release plate is an "L" shaped plate with a screw hole on one of its flat plates and the other flat plate in contact with the outer circumference of the armature.

3. The electromagnetic brake with manual release function, which is easy to install in confined spaces according to claim 1 or 2, is characterized in that: The housing is thinned towards the armature to form a mounting platform, and the housing through holes are respectively provided on the mounting platforms.

4. The electromagnetic brake with manual release function, which is easy to install in confined spaces according to claim 1 or 2, is characterized in that: The brake disc is connected to and integrally formed with the cylindrical brake sleeve. The brake sleeve is located inside the central through hole of the housing and is located outside the rotating shaft connecting cylinder and is connected to it for transmission.

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