Brake motor with speed regulation and brake functions

Abstract

The utility model discloses a brake motor with a speed regulation brake function, which comprises a motor body and a brake assembly, the motor body is provided with a rotor shaft extending out of a rear end cover of the motor body, the brake assembly comprises a magnet yoke structure, an armature structure and a brake plate which are sequentially sleeved on the rotor shaft, and the magnet yoke structure is fixed on the rear end cover of the motor body. A mounting cavity is formed between the magnet yoke structure and the rear end cover, a speed regulator sleeved on the rotor shaft is arranged in the mounting cavity, the speed regulator is electrically connected with the motor body, and the speed regulator is used for accurately controlling the rotating speed and the output power of the motor. According to the technical scheme, the speed regulator is arranged between the motor body and the brake assembly, installation of a junction box is omitted, the overall space utilization rate is higher, the installation size is reduced, the size of the motor is reduced, cost is saved, and the brake motor with the speed regulator is suitable for being installed in various narrow spaces.

Description

Technical Field

[0001] The utility model relates to the technical field of brakes, in particular to a brake motor with a speed regulating brake function. Background Art

[0002] With the improvement of the level of automated production, servo motors are becoming more and more widely used in various fields. Existing servo motors are mainly used in applications with higher control accuracy, such as robots, automation equipment and other fields. In order to meet the needs of current use, most of the servo motors on the market are equipped with brakes and speed regulators to achieve motor braking and speed control. The speed regulator adjusts the motor speed by changing the power supply frequency. The function of the brake is to brake the motor and keep it stationary when the motor loses power. This brake is installed at the rear end cover of the motor, and the speed regulator is installed on the outer wall of the motor through a junction box. The installation position layout between the existing motor, speed regulator and brake is not reasonable, resulting in the motor size being generally larger, the installation space occupied is large, and the overall structure is complex, so that the motor cannot be well applied to various narrow spaces, which is not conducive to the miniaturization of the motor and increases the production cost. Utility Model Content

[0003] Therefore, the technical problem to be solved by the utility model is to overcome the problem that the speed regulator in the prior art is installed on the outer wall of the motor by means of a junction box, which occupies a large installation space and has a complex overall structure, resulting in the motor being generally larger in size, which is not conducive to the miniaturization of the motor and increases production costs.

[0004] To solve the above problems, the utility model provides a brake motor with speed regulating brake function, including a motor body and a brake assembly, the motor body having a rotor shaft extending out of its rear end cover, the brake assembly comprising a yoke structure, an armature structure and a brake plate which are sequentially sleeved on the rotor shaft, the brake plate is arranged in linkage with the rotor shaft, the yoke structure is fixedly mounted on the rear end cover of the motor body, the yoke structure and the rear end cover are connected to form an installation cavity for the rotor shaft to pass through, a speed regulator sleeved on the rotor shaft is arranged in the installation cavity, and the speed regulator is electrically connected to the motor body.

[0005] As a preferred solution, the speed regulator is fixedly connected to the rear end cover or the yoke structure in the mounting cavity.

[0006] As a preferred solution, the speed regulator includes a mounting frame and a speed regulator coil arranged in the mounting frame, and the mounting frame is fixedly mounted on the rear end cover through a connecting structure.

[0007] As a preferred embodiment, the speed regulator also includes a center hole penetrating the middle of the mounting frame for the rotor shaft to pass through, and a magnetic ring linked to the rotor shaft and accommodated in the center hole. An inner cavity surrounding the center hole is formed in the mounting frame, and the speed regulator coil is installed in the inner cavity and surrounds the outside of the magnetic ring.

[0008] As a preferred solution, the connection structure is a screw structure, a rivet structure, a snap structure, or an adhesive structure that fixedly connects the mounting frame and the rear end cover.

[0009] As a preferred solution, the mounting frame is bent to form a fixing plate that is fitted and connected to the rear end cover, and the fixing plate and the rear end cover are fixedly connected by a screw structure.

[0010] As a preferred solution, the fixing plate is an annular structure and is provided with a connecting hole, and the rear end cover is provided with a threaded hole corresponding to the connecting hole. The fixing plate is installed on the rear end cover by passing a screw structure through the connecting hole and fixing it in the threaded hole.

[0011] As a preferred embodiment, the yoke structure and the armature structure are respectively provided with through holes for the rotor shaft to pass through, and the installation cavity includes an annular groove formed on one end of the yoke structure facing the rear end cover, and the rear end cover cooperates with the yoke structure to cover the opening of the annular groove when installed.

[0012] As a preferred solution, a yoke coil is provided on the yoke structure, and a spring structure is connected between the yoke structure and the armature structure. A friction plate facing the brake plate is provided on the armature structure, and a fan blade structure is provided on the side of the brake plate facing away from the armature structure.

[0013] As a preferred solution, a bearing structure is provided between the rear end cover and the rotor shaft, and a dust cover sealingly surrounding the brake assembly is also installed on the rear end cover.

[0014] Compared with the prior art, the technical solution of the utility model has the following advantages:

[0015] 1. In the brake motor provided by the utility model, an installation cavity is formed between the yoke structure and the rear end cover, and the speed regulator is installed in the installation cavity and electrically connected to the motor body. The speed regulator can adjust the voltage, current or frequency of the motor to achieve precise control of the motor speed and output power to meet the use requirements of various complex processes of the motor. By adopting the technical scheme, the structural layout between the yoke structure and the rear end cover is reasonably optimized, so as to reserve an installation cavity that can meet the installation requirements of the speed regulator. The speed regulator with such an installation design is built-in between the motor body and the brake assembly, eliminating the installation of the junction box, and the overall space utilization rate is higher, reducing the installation volume, which is conducive to reducing the size of the motor and saving costs. This motor with a built-in speed regulator has many advantages such as compact structure, smooth operation, small size, and easy installation. It is suitable for installation in various narrow spaces and can work under various harsh environmental conditions, thereby improving product performance.

[0016] 2. In the brake motor provided by the utility model, the speed regulator includes a mounting frame and a speed regulator coil arranged in the mounting frame, and the mounting frame is fixedly mounted on the rear end cover through a connecting structure. The connecting structure can adopt a rivet structure, a snap structure or an adhesive structure, so as to realize the installation and fixation of the speed regulator to the rear end cover. It can be seen that the speed regulator has a variety of installation methods, and the installation is convenient and quick. The yoke structure cooperates with the rear end cover to effectively surround the speed regulator in the installation cavity, thereby providing installation protection for the speed regulator.

[0017] 3. In the brake motor provided by the utility model, a center hole for the rotor shaft to pass through is provided in the middle of the mounting frame, and the magnetic ring is linked to the rotor shaft and accommodated in the center hole, so that the speed regulator coil is surrounded and located on the outside of the magnetic ring. This arrangement realizes reliable cooperation between the speed regulator and the rotor shaft. When the motor is working, the magnetic ring is driven to rotate by the rotor shaft, and an induced voltage is generated through the speed regulator coil, so that the speed regulator determines the motor speed according to this voltage, and then adjusts and controls the motor speed and output power, ensuring that the brake motor can accurately control the speed and torque.

[0018] 4. In the brake motor provided by the utility model, the mounting frame is bent and formed with a fixing plate which is fitted and connected to the rear end cover, and the fixing plate and the rear end cover are fixedly connected by a screw structure. This structural arrangement makes it convenient to install the speed regulator to the rear end cover through the mounting frame, and also protects the speed regulator coil and magnetic ring. This mounting frame increases the mounting contact surface with the rear end cover through the fixing plate to prevent tilting or shaking, thereby ensuring the flatness and reliability of the speed regulator installation, avoiding the speed regulator from shaking during the operation of the brake motor, and providing better installation stability.

[0019] 5. In the brake motor provided by the utility model, an annular groove is provided on one end of the yoke structure facing the rear end cover. When the rear end cover and the yoke structure are installed, they cooperate to block the opening of the annular groove, so that the annular groove and the rear end cover cooperate to form an installation cavity. A position space for installing and accommodating the speed regulator is reserved at one end of the yoke structure through the annular groove, thereby avoiding position interference between the yoke structure and the speed regulator, reasonably optimizing the structural layout, improving the utilization rate of the installation space, making the speed regulator and the brake assembly reliably combined for use, reducing the installation space occupied, making the product structure more compact, and facilitating reducing the size of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the drawings required for use in the specific implementation or the description of the prior art will be briefly introduced below.

[0021] Figure 1 A schematic diagram of a half-section structure of a brake motor provided by the utility model;

[0022] Figure 2 for Figure 1 The schematic diagram of the installation structure of the speed regulator is shown in;

[0023] Explanation of the reference numerals in the accompanying drawings: 1. Motor body; 11. Rear end cover; 12. Bearing structure; 13. Dust cover; 2. Yoke structure; 21. Yoke coil; 3. Armature structure; 31. Friction plate; 4. Brake plate; 5. Rotor shaft; 6. Speed ​​regulator; 61. Mounting frame; 62. Speed ​​regulator coil; 63. Magnetic ring; 64. Fixing plate; 7. Mounting cavity; 8. Screw structure; 9. Fan blade structure. DETAILED DESCRIPTION

[0024] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Example

[0028] This embodiment provides Figure 1-2 A brake motor with a speed regulating brake function shown in the figure includes a motor body 1 and a brake assembly, the motor body 1 having a rotor shaft 5 extending out of its rear end cover 11, the brake assembly including a yoke structure 2, an armature structure 3 and a brake plate 4 which are sequentially sleeved on the rotor shaft 5, the brake plate 4 being arranged in linkage with the rotor shaft 5, the yoke structure 2 being fixedly mounted on the rear end cover 11 of the motor body 1, the armature structure 3 being reciprocatably arranged between the yoke structure 2 and the brake plate 4, the yoke structure 2 and the rear end cover 11 being connected to form an installation cavity 7 for the rotor shaft 5 to pass through, a speed regulator 6 sleeved on the rotor shaft 5 being arranged in the installation cavity 7, and the speed regulator 6 being electrically connected to the motor body 1.

[0029] In the above embodiment, a mounting cavity 7 is formed between the yoke structure 2 and the rear end cover 11, and the speed regulator 6 is installed in the mounting cavity 7 and electrically connected to the motor body 1. The speed regulator 6 can adjust the voltage, current or frequency of the motor to achieve precise control of the motor speed and output power to meet the use requirements of various complex processes of the motor. By adopting the present technical solution, the structural layout between the yoke structure 2 and the rear end cover 11 is reasonably optimized, so as to reserve a mounting cavity 7 that can meet the installation requirements of the speed regulator 6. The speed regulator 6 with such an installation design is built-in between the motor body and the brake assembly, eliminating the installation of the junction box, and the overall space utilization rate is higher, reducing the installation volume, which is conducive to reducing the size of the motor and saving costs. This motor with a built-in speed regulator has many advantages such as compact structure, smooth operation, small size, and easy installation. It is suitable for installation in various narrow spaces and can work under various harsh environmental conditions to improve product performance.

[0030] Combine the following Figure 1-Figure 2 The specific setting method of the speed regulator is explained in detail:

[0031] The speed regulator 6 is fixedly connected to the rear end cover 11 in the installation cavity 7, or the speed regulator 6 is fixedly connected to the yoke structure 2 in the installation cavity 7. Specifically, the speed regulator 6 includes a mounting frame 61 and a speed regulator coil 62 arranged in the mounting frame 61, and the mounting frame 61 is fixedly mounted on the rear end cover 11 through a connecting structure, wherein the connecting structure can preferably be a screw structure 8 that fixedly connects the mounting frame 61 and the rear end cover 11, and the speed regulator 6 is installed on the rear end cover 11 and accommodated in the installation cavity 7, and the yoke structure 2 cooperates with the rear end cover 11 to effectively surround the speed regulator 6 in the installation cavity 7, thereby playing an installation protection role for the speed regulator.

[0032] like Figure 2 As shown, the speed regulator 6 also includes a center hole penetrating through the middle of the mounting frame 61 for the rotor shaft 5 to pass through, and a magnetic ring 63 linked to the rotor shaft 5 and accommodated in the center hole. The mounting frame 61 is formed with an inner cavity surrounding the center hole, and a speed regulator coil 62 and control components are installed in the inner cavity. The speed regulator coil 62 is installed in the inner cavity and surrounds the outer side of the magnetic ring 63. This arrangement realizes reliable cooperation between the speed regulator 6 and the rotor shaft 5. When the motor is working, the rotor shaft 5 drives the magnetic ring 63 to rotate, and an induced voltage is generated through the speed regulator coil, so that the speed regulator 6 determines the speed of the motor according to the voltage, and then adjusts and controls the speed and output power of the motor to ensure that the brake motor can accurately control the speed and torque.

[0033] As a specific structural setting, the mounting frame 61 is bent and formed with a fixing plate 64 that fits and is connected to the rear end cover 11. The fixing plate 64 and the rear end cover 11 are fixedly connected by a screw structure 8, wherein the mounting frame 61 and the fixing plate 64 are respectively annular structures, and a plurality of connecting holes are provided on the fixing plate 64, and the plurality of connecting holes are distributed on the fixing plate 64 at intervals along the circumferential direction, and a plurality of threaded holes corresponding to the connecting holes are provided on the rear end cover 11, and the fixing plate 64 is installed on the rear end cover 11 by passing the screw structure 8 through the connecting holes and fixing them in the threaded holes, and the motor body 1 is provided with wiring holes or wiring terminals on the rear end cover 11, so as to facilitate wiring connection with the speed regulator 6. This structural setting makes it easy to install and fix the speed regulator 6 to the rear end cover 11 through the installation frame 61, and also protects electronic components such as the speed regulator coil 62 and the magnetic ring 63. This installation frame 61 increases the installation contact surface with the rear end cover 11 through the fixing plate 64 to prevent tilting or shaking, thereby ensuring the flatness and reliability of the speed regulator installation, avoiding the speed regulator from shaking during the operation of the brake motor, and improving the installation stability.

[0034] In the above embodiment, although the connection structure preferably adopts the screw structure 8 to realize the installation and fixation of the speed regulator 6 on the rear end cover 11, it is obvious that this connection structure is not limited to the screw structure 8, and a rivet structure, a snap structure or an adhesive structure can also be used to realize the fixed connection between the mounting frame 61 and the rear end cover 11. It can be seen that this speed regulator 6 has a variety of installation methods, and the installation is convenient and fast. Users can choose to install according to actual needs, and the adaptability is good. Those skilled in the art can make a choice of the specific setting method of the connection structure according to the above description, and other equivalent embodiments will not be described one by one here.

[0035] It is further preferred that the yoke structure 2 and the armature structure 3 are respectively provided with through holes for the rotor shaft 5 to pass through, and the installation cavity 7 includes an annular groove formed on one end of the yoke structure 2 facing the rear end cover 11, and the rear end cover 11 cooperates with the yoke structure 2 to cover the opening of the annular groove when installed.

[0036] In this structural arrangement, the installation cavity 7 is formed by the cooperation of the annular groove and the rear end cover 11. The annular groove reserves a position space at one end of the yoke structure 2 for installing and accommodating the speed regulator 6, thereby avoiding position interference between the yoke structure 2 and the speed regulator 6, reasonably optimizing the structural layout, and improving the utilization rate of the installation space, so that the speed regulator and the brake assembly can be reliably combined for use, reducing the installation space occupied, making the product structure more compact, and facilitating reducing the size of the motor.

[0037] In this embodiment, if Figure 2 As shown, a yoke coil 21 is provided on the yoke structure 2, and a spring structure is connected between the yoke structure 2 and the armature structure 3, the function of the spring structure is to apply an elastic force to the armature structure 3 to move toward the side close to the brake plate 4, and a friction plate 31 facing the brake plate 4 is provided on the armature structure 3, and a fan structure 9 is provided on the side of the brake plate 4 facing away from the armature structure 3. The fan structure 9 and the brake plate 4 are formed as an integral structure, which is beneficial to improving the heat dissipation efficiency of the motor when it is working. The contact friction between the armature structure 3 and the brake plate 4 can be enhanced through the brake pad, thereby improving the braking effect. The working principle of the brake assembly is explained below: when the motor is working normally, the yoke coil 21 is energized to generate electromagnetic force to attract the armature structure 3 and the yoke structure 2 together, thereby driving the armature structure 3 to separate from the brake plate 4. At this time, the brake pad will not apply friction resistance to the brake plate 4, that is, the motor is working normally, and the brake plate 4 is driven by the rotor shaft 5 to rotate synchronously; and when the motor is powered off, the yoke coil 21 is also powered off. At this time, the armature structure 3 will drive the brake pad to move toward the side close to the brake plate 4 under the action of the spring force, and generate a large friction force through the close fit between the brake pad and the brake plate, so as to achieve the effect of braking the motor.

[0038] In order to make the rotation of the rotor shaft 5 smoother, a bearing structure 12 is provided between the rear end cover 11 and the rotor shaft 5. The bearing structure 12 can support the rotor shaft 5 to make a rotational motion, and reduce the mechanical load friction coefficient of the rotor shaft 5 during the transmission process, thereby reducing energy consumption. In addition, a dust cover 13 is also installed on the rear end cover 11 to seal and surround the brake assembly. The dust cover plays a dust-proof role, thereby improving the product protection level and making it safer and more reliable to use.

[0039] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A brake motor with a speed regulating brake function, comprising a motor body (1) and a brake assembly, wherein the motor body (1) has a rotor shaft (5) extending out of its rear end cover (11), and the brake assembly comprises a yoke structure (2), an armature structure (3) and a brake plate (4) which are sequentially sleeved on the rotor shaft (5), the brake plate (4) being arranged in linkage with the rotor shaft (5), and the yoke structure (2) being fixedly mounted on the rear end cover (11) of the motor body (1), characterized in that: The yoke structure (2) and the rear end cover (11) are connected to form an installation cavity (7) through which the rotor shaft (5) can pass. A speed regulator (6) sleeved on the rotor shaft (5) is arranged in the installation cavity (7), and the speed regulator (6) is electrically connected to the motor body (1).

2. The brake motor with speed regulating brake function according to claim 1, characterized in that: The speed regulator (6) is fixedly connected to the rear end cover (11) or the yoke structure (2) in the installation cavity (7).

3. The brake motor with speed regulating brake function according to claim 1 or 2, characterized in that: The speed regulator (6) comprises a mounting frame (61) and a speed regulator coil (62) arranged in the mounting frame (61); the mounting frame (61) is fixedly mounted on the rear end cover (11) via a connecting structure.

4. The brake motor with speed regulating brake function according to claim 3 is characterized in that: The speed regulator (6) further comprises a center hole penetrating through the middle of the mounting frame (61) for allowing the rotor shaft (5) to pass through, and a magnetic ring (63) sleeved on the rotor shaft (5) and accommodated in the center hole. An inner cavity surrounding the center hole is formed in the mounting frame (61), and the speed regulator coil (62) is mounted in the inner cavity and surrounding the outer side of the magnetic ring (63).

5. The brake motor with speed regulating brake function according to claim 3 is characterized in that: The connection structure is a screw structure (8) or a rivet structure or a snap-fit ​​structure or an adhesive structure that fixedly connects the mounting frame (61) and the rear end cover (11).

6. The brake motor with speed regulating brake function according to claim 5, characterized in that: The mounting frame (61) is bent to form a fixing plate (64) that is fitted and connected to the rear end cover (11); the fixing plate (64) and the rear end cover (11) are fixedly connected via a screw structure (8).

7. The brake motor with speed regulating brake function according to claim 6, characterized in that: The fixing plate (64) is an annular structure and is provided with a plurality of connection holes. The rear end cover (11) is provided with a plurality of threaded holes corresponding to the connection holes. The fixing plate (64) is installed on the rear end cover (11) by passing a screw structure (8) through the connection holes and fixing it in the threaded holes.

8. The brake motor with speed regulating brake function according to any one of claims 4 to 7, characterized in that: The yoke structure (2) and the armature structure (3) are respectively provided with corresponding through holes through which the rotor shaft (5) can pass, and the installation cavity (7) includes an annular groove formed on one end of the yoke structure (2) facing the rear end cover (11), and the rear end cover (11) cooperates with the yoke structure (2) to cover the opening of the annular groove when installed.

9. The brake motor with speed regulating brake function according to claim 8, characterized in that: A yoke coil (21) is arranged on the yoke structure (2), and a spring structure is connected between the yoke structure (2) and the armature structure (3); a friction plate (31) facing the brake plate (4) is arranged on the armature structure (3); and a fan blade structure (9) is arranged on the side of the brake plate (4) facing away from the armature structure (3).

10. The brake motor with speed regulating brake function according to claim 1, characterized in that: A bearing structure (12) is provided between the rear end cover (11) and the rotor shaft (5), and a dust cover (13) is also installed on the rear end cover (11) to seal and surround the brake assembly.

Images