Electromagnetic brake

Abstract

The utility model discloses an electromagnetic brake, according to the embodiment of the utility model, the electromagnetic brake comprises a friction plate which is used for being externally connected with a motor shell; the brake disc is used for being externally connected with a motor shaft and can rotate; the brake disc is arranged between the friction plate and the electromagnetic friction plate in a sliding mode in the axial direction; the electromagnetic friction plate is arranged between the brake disc and the brake seat in a sliding mode in the axial direction; the brake disc dust cover is arranged between the friction plate and the brake seat, and the brake disc dust cover is used for covering the space between the friction plate and the brake seat; the screw is used for connecting the friction plate and the brake seat, the electromagnetic friction plate is slidably arranged on the screw, a mounting space is defined between the brake seat and the friction plate, the brake disc dust cover is arranged between the friction plate and the brake seat, and the brake disc dust cover is used for shielding the mounting space and preventing dust from entering the mounting space. Therefore, the braking effect of the electromagnetic brake is prevented from being weakened due to dust invasion.

Description

Technical Field

[0001] The utility model relates to the technical field of brake components, in particular to an electromagnetic brake. Background Art

[0002] Servo motors with electromagnetic brakes typically operate in environments with high levels of dust and pollution. The brake discs of these servo motors are typically exposed, making them susceptible to dust intrusion. This not only affects the normal operation of the machine but also poses a safety hazard. Some manufacturers use enclosed electromagnetic brakes. While this solves the problem of dust intrusion, it not only affects the device's heat dissipation but also significantly complicates subsequent brake maintenance. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems in the prior art. To this end, the utility model proposes an electromagnetic brake that can not only prevent dust from intruding.

[0004] According to an embodiment of the present invention, an electromagnetic brake includes a friction plate, a brake seat, and a brake disc dust cover, wherein the friction plate is used to be connected to the motor housing; the brake seat is connected to the friction plate, and an installation space is defined between the brake seat and the friction plate, and the installation space is used to install the brake disc and the electromagnetic friction plate; the brake disc dust cover is arranged between the friction plate and the brake seat, and the brake disc dust cover is used to cover the installation space.

[0005] An electromagnetic brake according to an embodiment of the present invention has at least the following beneficial effects: an installation space is defined between the brake seat and the friction plate, the brake disc dust cover is arranged between the friction plate and the brake seat, and the brake disc dust cover is used to cover the installation space to prevent dust from entering the installation space, thereby preventing the braking effect of the electromagnetic brake from being weakened due to dust intrusion.

[0006] According to some embodiments of the present invention, the brake disc is used to be externally connected to the motor shaft, the brake disc is rotatable, and the brake disc is axially slidably arranged in the installation space. An electromagnetic friction plate that can slide axially is arranged between the brake disc and the brake seat, and the brake seat is used to drive the electromagnetic friction plate close to or away from the brake disc. The brake seat limits the rotation of the electromagnetic friction plate through a limit member, and the axial direction refers to the direction along the motor shaft.

[0007] According to some embodiments of the present invention, the limiting member is configured as a screw, the friction plate is connected to the brake seat through the screw, the electromagnetic friction plate is arranged on the screw, and a through hole is provided on the electromagnetic friction plate, so that the electromagnetic friction plate can be slidably arranged on the screw through the through hole and cannot rotate.

[0008] According to some embodiments of the present invention, a first mounting groove is provided on the friction plate, a second mounting groove is provided on the brake seat, and a first mounting ring and a second mounting ring are provided on the brake disc dust cover. The first mounting ring is provided in the first mounting groove, and the second mounting ring is provided in the second mounting groove. The mounting ring is provided in the mounting groove, so that the brake disc dust cover can better fit the friction plate and the brake disc, so that the brake disc dust cover can better close the installation space.

[0009] According to some embodiments of the present invention, the brake disc dust cover is configured to be strip-shaped, and locking devices are provided at both ends of the brake disc dust cover. The locking devices are used to connect the brake disc dust cover into a ring shape. The locking devices can fix the brake disc dust cover and can be fixedly installed on the friction plate and the brake seat.

[0010] According to some embodiments of the present invention, the locking device is configured as a metal button, which not only realizes the connection function but also facilitates the removal of the brake disc dust cover.

[0011] According to some embodiments of the present invention, a gear sleeve is provided at the center of the brake disc, and the gear sleeve is engaged with a coupling gear. The coupling gear is detachably connected to the center of the brake disc, and the coupling gear is used to connect to the motor shaft.

[0012] According to some embodiments of the present invention, a through hole is provided in the center of the coupling gear, the coupling gear is provided on the motor shaft through the through hole, a keyway is provided on the through hole, a key is provided on the motor shaft, the keyway cooperates with the key, and the setting of the keyway and the key can ensure that the coupling gear and the motor shaft rotate synchronously.

[0013] According to some embodiments of the present invention, the brake disc dust cover is made of high-quality PVC material. The high-quality PVC material has a good heat dissipation effect, which can enable the brake disc dust cover to have a good heat dissipation effect and ensure the braking effect of the electromagnetic brake.

[0014] According to some embodiments of the present invention, a brake assist handle is provided on the brake seat, and the brake assist handle is transmission-connected to the electromagnetic friction plate. The brake assist handle is used to drive the electromagnetic friction plate closer to or away from the brake disc. The setting of the brake assist handle can ensure that when the electromagnetic brake fails, the brake assist handle can manually operate the servo motor for braking.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic cross-sectional view of the structure of an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 A top view of

[0019] Figure 3 for Figure 1 Bottom view of

[0020] Figure 4 This is a schematic diagram of the installation of an embodiment of the present utility model.

[0021] Friction plate 100, first mounting groove 110;

[0022] Brake disc 200, gear sleeve 210;

[0023] Electromagnetic friction plate 300;

[0024] Brake seat 400, second mounting slot 410;

[0025] Brake disc dust cover 500, first mounting ring 510, second mounting ring 520;

[0026] Coupling gear 600, keyway 610, external teeth 620, through hole 630;

[0027] brake assist handle 700;

[0028] Screw 800.

[0029] Metal buttons 900. DETAILED DESCRIPTION

[0030] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0032] In the description of this utility model, "several" means one or more, "more" means two or more, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] Reference Figures 1 to 4 According to an embodiment of the present invention, an electromagnetic brake comprises a friction plate 100 for connecting to a motor housing; a brake disc 200 for connecting to a motor shaft and being rotatable; an electromagnetic friction plate 300, wherein the brake disc 200 is axially slidably arranged between the friction plate 100 and the electromagnetic friction plate 300; a brake seat 400, wherein the electromagnetic friction plate 300 is axially slidably arranged between the brake disc 200 and the brake seat 400; and a brake disc dust cover 500, which is arranged between the friction plate 100 and the brake seat 400 and is provided to prevent the brake disc from sliding. The dust cover 500 is used to cover the space between the friction plate 100 and the brake seat 400; the screw 800 is used to connect the friction plate 100 and the brake seat 400. The electromagnetic friction plate 300 is slidably arranged on the screw 800. An installation space is defined between the brake seat 400 and the friction plate 100. The brake disc dust cover is arranged between the friction plate 100 and the brake seat 400. The brake disc 200 dust cover is used to cover the installation space to prevent dust from entering the installation space, thereby preventing the braking effect of the electromagnetic brake from being weakened due to the intrusion of dust.

[0035] Reference Figure 2 and Figure 3A gear sleeve 210 is provided at the center of the brake disc 200, and a coupling gear 600 is provided inside the brake disc 200. The coupling gear 600 is provided with external teeth 620, and the external teeth 620 are engaged with the gear sleeve 210. A through hole 630 is provided at the center of the coupling gear 600, and the coupling gear 600 is provided on the motor shaft through the through hole 630. A keyway 610 is provided on the through hole 630, and a key is provided on the motor shaft. The keyway 610 cooperates with the key to ensure that the coupling gear 600 and the motor shaft rotate coaxially, and the angular velocity of the coupling gear 600 and the motor shaft is the same. The gear sleeve 210 is fully internally meshed with the external teeth 620, and the brake disc 200 and the coupling gear 600 rotate coaxially, and the angular velocity of the brake disc 200 and the coupling gear is the same.

[0036] Reference Figure 4 The brake disc dust cover 500 is arranged between the friction plate 100 and the brake seat 400, and the brake disc dust cover 500 is set in a ring shape through a metal button 900.

[0037] In some embodiments, the brake disc 200 is used to connect to the motor shaft externally, the brake disc 200 is rotatable, and the brake disc 200 is set in the installation space along the axial sliding. An electromagnetic friction plate 300 that can slide along the axial direction is set between the brake disc 200 and the brake seat 400. The brake seat 400 is used to drive the electromagnetic friction plate 300 to approach or move away from the brake disc 200. The brake seat 400 limits the rotation of the electromagnetic friction plate 300 through a limiter. The brake disc 200, the electromagnetic friction plate 300, and the brake seat 400 can also be other connection relationships that meet the braking effect. The electromagnetic friction plate 300 and the brake seat 400 are both mature technologies in the field. How to drive them by electromagnetic force is a solution well known to those skilled in the art and will not be repeated here.

[0038] It can be understood that the limiting member is set as a screw 800, the friction plate 100 is connected to the brake seat 400 through the screw 800, the electromagnetic friction plate 300 is set on the screw 800, and the electromagnetic friction plate 300 is provided with a mounting hole, so that the electromagnetic friction plate 300 can be slidably set on the screw 800 through the mounting hole, and the electromagnetic friction plate 300 cannot rotate. The electromagnetic friction plate 300 needs to contact the brake disc to achieve braking. It can be understood that the screw 800 can also be other components with a limiting function, such as a guide rod is set on the brake seat 400, the electromagnetic friction plate 300 is slidably connected to the guide rod, and the guide rod extends along the axial direction of the brake seat 400.

[0039] It should be noted that a first mounting groove 110 is provided on the friction plate 100, a second mounting groove 410 is provided on the brake seat 400, and a first mounting ring 510 and a second mounting ring 520 are provided on the brake disc dust cover 500. The first mounting ring 510 is arranged in the first mounting groove 110, and the second mounting ring 520 is arranged in the second mounting groove 410. The mounting rings are arranged in the mounting grooves, so that the brake disc dust cover 500 can better fit the friction plate 100 and the brake disc 200, so that the brake disc dust cover 500 can better seal the installation space. It should be noted that the connection relationship between the brake disc dust cover and the friction plate and the brake seat can also be welding or fastener connection.

[0040] It should be emphasized that the brake disc dust cover 500 is configured to be strip-shaped, and locking devices are provided at both ends of the brake disc dust cover 500. The locking devices can fix the shape of the brake disc dust cover 500 and can be fixedly installed on the friction plate 100 and the brake seat 400. It should be emphasized that the brake disc dust cover 500 can also be configured to be ring-shaped, and can be installed on the brake seat 400 and the friction plate 100 without a locking device.

[0041] In some embodiments, the locking device is configured as a metal button 900, which is used to connect the brake disc dust cover 500 into a ring shape. While realizing the connection function, the metal button 900 also facilitates the disassembly of the brake disc dust cover 500. It should be conceivable that the metal button 900 can also be other devices with a locking function, and the locking device can be configured as Velcro, a buckle, etc.

[0042] It should be understood that a gear sleeve 210 is provided at the center of the brake disc 200, and the gear sleeve 210 is engaged with a coupling gear 600. The coupling gear 600 is detachably connected to the center of the brake disc 200. The coupling gear 600 is used to connect to the motor shaft. The gear sleeve 210 and the external teeth 620 can also be set as other devices with synchronous rotation effects, or the brake disc 200 and the coupling gear 600 can be set as one component.

[0043] In some embodiments, a through hole 630 is provided at the center of the coupling gear 600, and the coupling gear 600 is provided on the motor shaft through the through hole 630. A keyway 610 is provided on the through hole 630, and a key is provided on the motor shaft. The keyway 610 cooperates with the key. The setting of the keyway 610 and the key can ensure that the coupling gear 600 and the motor shaft rotate synchronously. The keyway 610 and the key can also be set as other connecting parts with the function of transmitting torque. A second mounting hole can be set on the motor shaft and the coupling gear 600, and a pin is inserted into the second mounting hole of the motor shaft and the coupling gear 600.

[0044] It can be imagined that the brake disc dust cover 500 is made of high-quality PVC material. The high-quality PVC material has a good heat dissipation effect, which can enable the brake disc dust cover 500 to have a good heat dissipation effect and ensure the braking effect of the electromagnetic brake. The high-quality PVC material should be 3mm thick to ensure that the brake disc dust cover has good plasticity. It should be understood that the manufacturing material of the brake disc dust cover can also be other materials with good heat dissipation effects.

[0045] In some embodiments, a brake assist handle 700 is provided on the brake seat 400. The brake assist handle 700 is transmission-connected to the electromagnetic friction plate 300. The brake assist handle 700 is used to drive the electromagnetic friction plate 300 close to or away from the brake disc 200. The setting of the brake assist handle 700 can ensure that when the electromagnetic brake fails, the brake assist handle 700 can manually operate the servo motor for braking. The brake assist handle 700 can be provided with a brake lever to transmit pressure to the electromagnetic friction plate 300, so that the electromagnetic friction plate 300 contacts the brake disc 200 to achieve a braking effect.

[0046] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An electromagnetic brake, characterized in that: Including coaxial arrangement of: A friction plate (100) for connecting to the motor housing; A brake seat (400) is connected to the friction plate (100), and an installation space is defined between the brake seat (400) and the friction plate (100), wherein the installation space is used to install a brake disc (200) and an electromagnetic friction plate (300); A brake disc dust cover (500) is arranged between the friction plate (100) and the brake seat (400), and the brake disc dust cover (500) is used to cover the installation space.

2. The electromagnetic brake according to claim 1, characterized in that: The brake disc (200) is used to be connected to the motor shaft externally. The brake disc (200) is rotatable. The brake disc (200) is axially slidably arranged in the installation space. An electromagnetic friction plate (300) that can slide axially is arranged between the brake disc (200) and the brake seat (400). The brake seat (400) is used to drive the electromagnetic friction plate (300) to approach or move away from the brake disc (200). The brake seat (400) limits the rotation of the electromagnetic friction plate (300) through a limiting member.

3. The electromagnetic brake according to claim 2, characterized in that: The limiting member is configured as a screw (800), the friction plate (100) is connected to the brake seat (400) via the screw (800), and the electromagnetic friction plate (300) is slidably connected to the screw (800).

4. The electromagnetic brake according to claim 1, characterized in that: The friction plate (100) is provided with a first mounting groove (110), the brake seat (400) is provided with a second mounting groove (410), and the brake disc dust cover (500) is provided with a first mounting ring (510) and a second mounting ring (520), the first mounting ring (510) is engaged and snapped into the first mounting groove (110), and the second mounting ring (520) is engaged and snapped into the second mounting groove (410).

5. The electromagnetic brake according to claim 1, characterized in that: The brake disc dust cover (500) is provided in a strip shape, and locking devices are provided at both ends of the brake disc dust cover (500), and the strip-shaped brake disc dust cover (500) is connected into a ring shape through the locking devices.

6. The electromagnetic brake according to claim 5, characterized in that: The locking device is configured as a metal button (900).

7. The electromagnetic brake according to claim 2, characterized in that: A gear sleeve (210) is provided at the center of the brake disc (200), and the gear sleeve (210) is engaged with a coupling gear (600). The coupling gear (600) is detachably connected to the center of the brake disc (200), and the coupling gear (600) is used for external connection to a motor shaft.

8. The electromagnetic brake according to claim 7, characterized in that: A through hole (630) is provided at the center of the coupling gear (600), and the coupling gear (600) is provided on the motor shaft through the through hole (630). A keyway (610) is provided on the through hole (630), and a key is provided on the motor shaft, and the keyway (610) cooperates with the key.

9. The electromagnetic brake according to claim 1, characterized in that: The brake disc dust cover (500) is made of PVC material.

10. The electromagnetic brake according to claim 1, characterized in that: A brake assist handle (700) is provided on the brake seat (400), and the brake assist handle (700) is transmission-connected to the electromagnetic friction plate (300). The brake assist handle (700) is used to drive the electromagnetic friction plate (300) to approach or move away from the brake disc (200).

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