Integral brake coupling for easy installation
Patent Information
- Application Number
- CN202522493831.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-11-25
AI Technical Summary
第一，安装维护复杂：分体式结构需要分别对准、安装和固定联轴器与电磁制动器，拆装过程繁琐；在维护电磁制动器时，往往需要拆卸整个传动链，费时费力
本实用新型通过将电磁制动器置于壳体内并通过两个法兰实现封闭安装，并通过传动轴及夹紧套实现能够与转轴直接连接的联轴器功能，从而将制动功能和联轴功能集成于一体，能够作为一个整体直接安装在电机等产品上，便于安装和维护，无需单独装拆电磁制动器和联轴器，极大地简化了操作流程，节省了安装和维护的时间和人力成本，并实现了对电磁制动器的高可靠防护功能，有效隔绝了灰尘、水分等外部环境的影响，提升了电磁制动器的可靠性和使用寿命；同时，制动盘与传动轴之间可轴向移动的周向传动连接结构避免了分体结构现场连接存在的对中性差、装配误差大的问题，利用夹紧套与转轴连接也提高了扭转刚度和重复定位精度，使其运行更加平稳，振动和噪音更小。
Smart Images
Figure CN224871758U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a braking assembly, and more particularly to an integrated brake coupling that is easy to install. Background Technology
[0002] In high-precision transmission systems, couplings are used to connect the motor shaft and the load shaft to transmit torque and compensate for alignment errors; while electromagnetic brakes are used to maintain the load position when power is off or when a stop is required.
[0003] In equipment such as servo motors, stepper motors, robot joints, and precision machine tools, electromagnetic brakes are often connected to the shafts of the drive devices, such as motors, via couplings. Currently, the most common implementation method is a "split-type" structure, where a standard coupling and a standard electromagnetic brake are connected in series on the motor output shaft via a mechanical interface. This traditional connection method has the following drawbacks: First, installation and maintenance are complicated: the split structure requires separate alignment, installation and fixation of the coupling and electromagnetic brake, and the disassembly and assembly process is cumbersome; when maintaining the electromagnetic brake, it is often necessary to disassemble the entire transmission chain, which is time-consuming and labor-intensive.
[0004] Second, poor protection performance: Electromagnetic brakes in split structures are usually external, lacking effective sealing and protection, and are easily affected by environmental factors such as dust and moisture, leading to a decrease in braking performance or failure.
[0005] Third, large cumulative error and poor alignment: Manufacturing and installation errors of multiple independent components accumulate, affecting the coaxiality of the entire transmission system, which in turn introduces additional vibration and noise, reducing transmission accuracy and service life.
[0006] Fourth, low structural stiffness: The series structure increases the weak link, reducing the overall torsional stiffness and response speed of the transmission system.
[0007] Fifth, high cost and complexity: It requires the separate procurement, design and installation of two components, as well as the configuration of corresponding connectors and support structures, which increases material costs and assembly complexity. Utility Model Content
[0008] The purpose of this invention is to provide an integrated brake coupling that combines an electromagnetic brake and a coupling, making it easy to install, in order to solve the above-mentioned problems.
[0009] This utility model achieves the above objectives through the following technical solutions: An easy-to-install integrated brake coupling includes an electromagnetic brake. The electromagnetic brake includes a grooved disc, an armature, a brake disc, and a cover plate. The armature is located between the grooved disc and the brake disc, and the brake disc is located between the armature and the cover plate. An electromagnetic coil and a return spring are installed in the grooved disc, with one end of the return spring pressing against the armature. The easy-to-install integrated brake coupling also includes a housing, a first flange, a second flange, and a drive shaft. The electromagnetic brake is placed inside the housing. The first flange and the second flange are respectively installed at both ends of the housing and connected to each other by connecting screws. The drive shaft passes sequentially through the central through hole of the first flange and the housing. The transmission shaft has a central through hole, a central through hole in the grooved plate, a central through hole in the armature, a central through hole in the brake disc, a central through hole in the cover plate, and a central through hole in the second flange. The end of the transmission shaft near the first flange is connected to the wall of the central through hole of the first flange by a bearing. The end of the transmission shaft near the second flange is equipped with a clamping sleeve for connecting to a rotating shaft. The brake disc is bent 90° towards the second flange from its central through hole to form a brake cylinder. The inner circumference of the brake cylinder and the corresponding outer circumference of the transmission shaft are respectively provided with axial keyways, and the two keyways are provided with splines for realizing transmission connection.
[0010] Preferably, in order to reduce the noise generated by the spline contacting other components, the outer wall of the spline is provided with a groove and an elastomer for noise reduction is provided in the groove.
[0011] Preferably, in order to achieve a more reliable connection function, the slot is provided with a through hole near the outer peripheral edge and the connecting screw passes through the through hole.
[0012] Preferably, in order to achieve better friction braking function, friction pads are provided on both sides of the brake disc.
[0013] The beneficial effects of this utility model are as follows: This invention integrates braking and coupling functions into one unit. The electromagnetic brake is housed within a casing and sealed using two flanges. A drive shaft and clamping sleeve enable direct connection to the rotating shaft. This allows for direct installation as a single unit on motors and other products, simplifying installation and maintenance. The elimination of separate installation and disassembly of the electromagnetic brake and coupling significantly simplifies the process, saving time and labor costs. Furthermore, it provides highly reliable protection for the electromagnetic brake, effectively isolating it from external environmental influences such as dust and moisture, thus improving its reliability and lifespan. Simultaneously, the axially movable circumferential transmission connection between the brake disc and drive shaft avoids the problems of poor alignment and large assembly errors inherent in separate on-site connections. The clamping sleeve connection to the rotating shaft also improves torsional stiffness and repeatability, resulting in smoother operation and reduced vibration and noise. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the main structure of the easy-to-install integrated brake coupling described in this utility model; Figure 2 yes Figure 1 A schematic diagram of the AA cross-sectional structure. Detailed Implementation
[0015] The present invention will be further described below with reference to the accompanying drawings: like Figure 1 and Figure 2As shown, the easy-to-install integrated brake coupling of this utility model includes an electromagnetic brake. The electromagnetic brake includes a grooved disc 8, an armature 13, a brake disc 14, a cover plate 16, a housing 4, a first flange 2, a second flange 5, and a drive shaft 1. The armature 13 is located between the grooved disc 8 and the brake disc 14, and the brake disc 14 is located between the armature 13 and the cover plate 16. An electromagnetic coil 10 and a return spring 7 are installed in the grooved disc 8, and one end of the return spring 7 presses against the armature 13. The electromagnetic brake is placed inside the cavity of the housing 4. The first flange 2 and the second flange 5 are respectively installed at both ends of the housing 4 and connected to each other by connecting screws 9. The drive shaft 1 passes sequentially through the central through hole of the first flange 2, the central through hole of the housing 4, and the grooved disc 8. The drive shaft 1 has a central through hole, an armature 13 central through hole, a brake disc 14 central through hole, a cover plate 16 central through hole, and a second flange 5 central through hole. The end of the drive shaft 1 closest to the first flange 2 is connected to the wall of the central through hole of the first flange 2 via a bearing 6. A clamping sleeve 17 for connecting to a rotating shaft (not shown in the figure, such as a motor shaft) is installed at the end of the drive shaft 1 closest to the second flange 5. A brake cylinder 15 is formed by bending 90° towards the second flange 5 from the position near its central through hole. Keyways with an axial length are provided on the inner circumference of the brake cylinder 15 and the corresponding outer circumference of the drive shaft 1, and splines 11 for achieving transmission connection are provided in both keyways. The clamping sleeve 17 is a conventional product in the prior art, also called an expansion sleeve, which is a component that achieves a reliable connection with the shaft through an expansion method.
[0016] Preferably, to reduce noise generated by the spline 11 contacting other components, a groove is provided on the outer wall of the spline 11, and an elastomer 12 for noise reduction is provided in the groove; to achieve a more reliable connection function, a through hole is provided on the groove 8 near the outer peripheral edge, and the connecting screw 9 passes through the through hole; to achieve a better friction braking function, friction pads (not marked in the figure) are provided on both sides of the brake disc 14. The groove 8 and the cover plate 16 are also connected by screws (not marked in the figure), and bushings (not marked in the figure) are fitted in the screws at positions corresponding to the armature 13 and the brake disc 14. These structures are conventional structures.
[0017] Figure 1 and Figure 2 The electrical connection terminal 3 located on the housing 4 is also shown; it is a conventional structure.
[0018] like Figure 1 and Figure 2As shown, in application, this integrated brake coupling is directly installed on products such as motors via the second flange 5. The rotating shaft of the motor or other product is reliably connected to the clamping sleeve 17 through a tightening method. The first flange 2 is connected to the product at the load end, and the end of the transmission shaft 1 closest to the first flange 2 is connected to the shaft of the load product. When the electromagnetic coil 10 is energized, it generates electromagnetic attraction, which overcomes the elastic force of the reset spring 7 and attracts the armature 13 towards the direction of the slot plate 8 and presses it tightly against the slot plate 8, thereby separating the armature 13 from the brake disc 14. At this time, both the brake disc 14 and the transmission shaft 1 can rotate normally, and both the motor and the load product are operating normally. The electromagnetic brake is in the released braking state. When the electromagnetic coil 10 is de-energized, the electromagnetic attraction disappears, and the elastic force of the reset spring 7 causes the armature 13 to press the brake disc 14 tightly onto the cover plate 16. Neither the brake disc 14 nor the transmission shaft 1 can rotate, achieving a fast and reliable braking function. The electromagnetic brake is in the braking state.
[0019] 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 easy-to-install integrated brake coupling, comprising an electromagnetic brake, the electromagnetic brake comprising a grooved disc, an armature, a brake disc, and a cover plate, the armature being located between the grooved disc and the brake disc, the brake disc being located between the armature and the cover plate, an electromagnetic coil and a return spring being installed in the grooved disc, one end of the return spring pressing against the armature, characterized in that: The easy-to-install integrated brake coupling also includes a housing, a first flange, a second flange, and a drive shaft. The electromagnetic brake is placed inside the housing. The first flange and the second flange are respectively installed at both ends of the housing and connected to each other by connecting screws. The drive shaft passes sequentially through the central through hole of the first flange, the central through hole of the housing, the central through hole of the slotted plate, the central through hole of the armature, the central through hole of the brake disc, the central through hole of the cover plate, and the central through hole of the second flange. The end of the drive shaft near the first flange is connected to the wall of the central through hole of the first flange by a bearing. The end of the drive shaft near the second flange is equipped with a clamping sleeve for connecting to the rotating shaft. The brake disc is bent 90° towards the second flange from the position near its central through hole to form a brake cylinder. The inner circumference of the brake cylinder and the corresponding outer circumference of the drive shaft are respectively provided with axial keyways, and the two keyways are provided with splines for realizing the transmission connection.
2. The easy-to-install integrated brake coupling according to claim 1, characterized in that: The outer wall of the spline is provided with a groove and an elastomer for noise reduction is provided in the groove.
3. The easy-to-install integrated brake coupling according to claim 1 or 2, characterized in that: The groove has a through hole near the outer peripheral edge, and the connecting screw passes through the through hole.
4. The easy-to-install integrated brake coupling according to claim 1 or 2, characterized in that: Friction pads are provided on both sides of the brake disc.