Hollow integrated servo motor driver assembly
By designing the hollow integrated servo motor driver components, small pass slots, large pass slots, heat sinks and temperature detection devices, the stable operation and sealing problems of the servo motor driver in high temperature environments are solved, and stable operation and convenient connection in high temperature environments are achieved.
Patent Information
- Application Number
- CN202422403453.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The existing servo motor drivers take up a large space, cumbersome wiring, and lack effective heat dissipation mechanisms, resulting in unstable operation in high-temperature environments, insufficient interfaces, and troublesome connection of equipment.
The hollow integrated servo motor driver assembly is designed, using small pass slots, large pass slots, heat sinks, driver circuit boards, encoder center holes and temperature detection devices, combined with sealing components to improve sealing and heat dissipation efficiency, monitor temperatures in real time and operate stably in a high-temperature environment.
Maintain stable operation in high temperature environments, reduce heat-induced failures, improve sealing and interface richness, and facilitate equipment connection and expansion functions.
Smart Images
Figure CN223156906U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of servo motor drivers, in particular to a hollow integrated servo motor driver assembly. Background Technique
[0002] A servo motor refers to an engine that controls the operation of mechanical components in a servo system. It is an auxiliary motor indirect speed change device. The control motor can make the control speed and position accuracy very accurate, and can convert the voltage signal into matrix and rotational speed to drive the control object.
[0003] A servo driver, also known as a "servo controller" or "servo amplifier", is a controller used to control a servo motor. Its function is similar to that of an inverter acting on an ordinary AC motor. It belongs to a part of the servo system and is mainly applied to high-precision positioning systems.
[0004] Existing servo motors and servo drivers occupy a relatively large space, causing inconvenience in carrying, transporting, installing and using. On the other hand, the design of the servo motor driver body is not reasonable enough. The hollow integrated design is not adopted, which will make the wiring layout more cumbersome and extremely inconvenient to use. Moreover, there is a lack of an effective heat dissipation mechanism, resulting in the inability to operate stably in a high-temperature environment. The acceptable environmental temperature margin is not large, and it is easy to cause failures due to the heat generated by itself. In addition, the interfaces are not rich enough, and it is troublesome to connect subsequent devices. In view of this, we have proposed a hollow integrated servo motor driver assembly. Content of the Utility Model
[0005] The purpose of the utility model is to provide a hollow integrated servo motor driver assembly to solve the problems raised in the above background technique.
[0006] To achieve the above purpose, the utility model provides the following technical solutions:
[0007] A hollow integrated servo motor driver assembly includes a housing body. A through housing center hole is opened in the center of the housing body. A through small through groove and a large through groove are opened at one end of the housing body far from its center. It further includes: a plug-in brake, which is clamped inside the housing body; a driver circuit board, which is fixedly installed inside the bottom end of the housing body. A heat sink is fixedly installed on the top of the driver circuit board. An MCU main control chip is fixedly installed on the top of the driver circuit board. A through driver center hole is opened in the center of the driver circuit board. A gate driver is fixedly installed on the top of the driver circuit board. A bus communication chip and a brake control interface are fixedly installed at the bottom of the driver circuit board. A bus communication control interface, a torque sensor interface and a MOS tube are fixedly installed on the top of the driver circuit board.
[0008] Encoder circuit board. An encoder circuit board is fixedly installed inside the bottom end of the housing body. The encoder circuit board is located below the driver circuit board. A magnetic encoder reader head and a thermal chip are fixedly installed on the top of the encoder circuit board. An encoder central hole is provided through the center of the encoder circuit board. A servo control chip and a temperature detection device are fixedly installed on the top of the encoder circuit board.
[0009] Large magnetic code disk. A large magnetic code disk is snap-fitted to the bottom end of the housing body. A small magnetic code disk is nested inside the large magnetic code disk. The two magnetic encoder reader heads are adapted to the large magnetic code disk and the small magnetic code disk, supporting multi-turn counting.
[0010] Preferably, multiple sets of heat sinks and small through grooves are provided. The multiple sets of heat sinks are circumferentially arrayed on the top end of the driver circuit board with the center of the circular cross-section of the driver circuit board as the array center. And the multiple sets of heat sinks are respectively located inside the small through grooves. The heat sinks and the small through grooves cooperate to conduct the heat generated by high-heat components such as the MCU main control chip, gate driver, bus communication chip, MOS transistor, and servo control chip in the servo driver body, so that these components can still operate at the rated temperature even in a high-temperature environment.
[0011] Preferably, a sealing assembly is provided inside the housing body. The sealing assembly includes a rubber ring. The rubber ring is snap-fitted inside the housing body. The inner side of the rubber ring is slidably fitted to the outside of the plug-in brake. A rubber cover plate is snap-fitted to the top end of the rubber ring. A rubber ring is fixedly installed inside the rubber ring. A fixing block is fixedly installed on the rubber ring. One end of a spring plate is fixedly installed on the outside of the fixing block. A thin shaft is fixedly installed inside the other end of the spring plate. A roller is rotatably installed on the outside of the thin shaft. The outside of the roller is rollingly fitted to the inner wall of the rubber ring.
[0012] Preferably, multiple sets of the fixing blocks, spring plates, thin shafts, and rollers are provided. The multiple sets of the fixing blocks, spring plates, thin shafts, and rollers are equidistantly circumferentially arrayed with the center of the circular cross-section of the rubber ring as the array center. And multiple sets of the spring plates, thin shafts, and rollers are provided on the outside of a single set of fixing blocks, so as to make the sealing performance better.
[0013] Preferably, two magnetic encoder reader heads are provided, and the two magnetic encoder reader heads are located inside the large through groove.
[0014] Preferably, multiple sets of the temperature detection devices are provided. The multiple sets of temperature detection devices monitor in real time the real-time temperatures of the MCU main control chip, gate driver, bus communication chip, brake control interface, bus communication control interface, torque sensor interface, and heat-sensitive and heat-averse components such as MOS transistors and the motor, preventing these devices from operating in an environment with a temperature exceeding the rated temperature. If the device temperature has reached or even exceeded the rated temperature, the main control chip will, according to the program settings, take measures such as enabling an alarm, outputting a low-power state, and stopping work to deal with it.
[0015] Compared with the prior art, the present utility model provides a hollow integrated servo motor driver assembly, which has the following beneficial effects: In order to operate stably in a high-temperature environment, it has a large acceptable environmental temperature margin and is not easily prone to failure due to the heat generated by itself. In combination with the small through slots, large through slots, driver circuit board, heat sink, driver central hole, encoder central hole, and temperature detection device, it can thus operate stably in a high-temperature environment, has a large acceptable environmental temperature margin, and is not easily prone to failure due to the heat generated by itself; In order to enable the servo motor driver body to operate better, a sealing assembly is provided. When the plug-in brake is inserted into the inside of the housing body, in combination with the rubber ring, rubber cover plate, rubber ring, fixing block, spring plate, thin shaft, and roller, the rubber ring is compressed between the plug-in brake and the housing body, thereby making the sealing better, making the plug-in brake more firm, and then enabling the servo motor driver body to operate better. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic top view of the housing body and some structures of the present utility model;
[0017] Figure 2 It is an exploded schematic view of an overall structure of the present utility model;
[0018] Figure 3 It is a schematic front view of some structures of the encoder circuit board of the present utility model;
[0019] Figure 4 It is a schematic back view of some structures of the encoder circuit board of the present utility model;
[0020] Figure 5 It is a schematic connection diagram of the driver circuit board and some structures of the present utility model;
[0021] Figure 6 It is an exploded schematic bottom view of the housing body and some structures of the present utility model;
[0022] Figure 7 It is an exploded schematic top view of the housing body and some structures of the present utility model;
[0023] Figure 8It is a schematic view of the bottom view of the housing body and part of the structure of the present utility model;
[0024] Figure 9 It is a schematic view of the cross-section of the rubber ring of the present utility model;
[0025] Figure 10 It is a schematic view of the connection of the rubber ring and part of the structure of the present utility model;
[0026] Figure 11 For the present utility model Figure 10 The enlarged schematic view of the structure in area A;
[0027] Figure 12 It is a schematic view of the connection of the housing body and part of the structure of the present utility model.
[0028] In the figure: 1. Housing body; 11. Housing center hole; 12. Small through groove; 13. Large through groove; 2. Pin type brake; 3. Driver circuit board; 31. Heat sink; 32. MCU main control chip; 33. Driver center hole; 34. Gate driver; 35. Bus communication chip; 36. Brake control interface; 37. Bus communication control interface; 38. Torque sensor interface; 39. MOS tube; 4. Encoder circuit board; 41. Magnetic encoder read head; 42. Thermal chip; 43. Encoder center hole; 44. Servo control chip; 45. Temperature detection device; 5. Large magnetic code disk; 6. Small magnetic code disk; 7. Sealing assembly; 71. Rubber ring; 72. Rubber cover plate; 73. Rubber ring; 74. Fixed block; 75. Spring plate; 76. Thin shaft; 77. Roller. Specific embodiments
[0029] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture as shown in the drawings. If the specific posture changes, the directional indications will also change accordingly.
[0030] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes, and do not particularly refer to the order or sequence. Nor are they used to limit the present utility model. They are only used to distinguish conditions or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.
[0031] Please refer to Figure 1-12 , the present utility model provides a technical solution:
[0032] A hollow integrated servo motor driver assembly includes a housing body 1. A through housing center hole 11 is provided at the center of the housing body 1. A through small through groove 12 and a large through groove 13 are provided at one end of the housing body 1 away from its center of the circle. It further includes a pin type brake 2. The pin type brake 2 is clamped inside the housing body 1. The cooperation of the pin type brake 2 makes the structure simpler and easier to control, and it is not easy to have the risk of braking lock-up. A driver circuit board 3 is fixedly installed inside the bottom end of the housing body 1. A heat sink 31 is fixedly installed on the top of the driver circuit board 3. An MCU main control chip 32 is fixedly installed on the top of the driver circuit board 3. A through driver center hole 33 is provided inside the center of the driver circuit board 3. A gate driver 34 is fixedly installed on the top of the driver circuit board 3. A bus communication chip 35 and a brake control interface 36 are fixedly installed on the bottom of the driver circuit board 3. A bus communication control interface 37, a torque sensor interface 38 and a MOS tube 39 are fixedly installed on the top of the driver circuit board 3. An encoder circuit board 4 is fixedly installed inside the bottom end of the housing body 1. The encoder circuit board 4 is located below the driver circuit board 3. Thus, the heat-generating components are arranged on the upper layer and placed on the driver circuit board 3, and the components that are more sensitive to high temperature are arranged on the lower layer and placed on the encoder circuit board 4. A magnetic encoder read head 41 and a thermosensitive chip 42 are fixedly installed on the top of the encoder circuit board 4. A through encoder center hole 43 is provided in the center of the encoder circuit board 4. A servo control chip 44 and a temperature detection device 45 are fixedly installed on the top of the encoder circuit board 4. The cooperation of the temperature detection device 45 can monitor the operating state in real time and make adaptive responses according to different situations. A large magnetic code disk 5 is clamped at the bottom end of the housing body 1. A small magnetic code disk 6 is nested inside the large magnetic code disk 5.
[0033] In an embodiment of the present utility model, multiple groups of heat sinks 31 and small through grooves 12 are provided. And multiple groups of heat sinks 31 are circumferentially arrayed on the top end of the driver circuit board 3 with the center of the circular cross-section of the driver circuit board 3 as the array center, and multiple groups of heat sinks 31 are respectively located inside the small through grooves 12. The cooperation of the heat sinks 31 and the small through grooves 12 conducts the heat generated by the high-heat components such as the MCU main control chip 32, the gate driver 34, the bus communication chip 35, the MOS tube 39 and the servo control chip 44 in the servo driver body, so that these components can still operate at the rated temperature even in a high-temperature environment. Further, two magnetic encoder read heads 41 are provided, and the two magnetic encoder read heads 41 are located inside the large through groove 13. Further, the two magnetic encoder read heads 41 are adapted to the large magnetic code disk 5 and the small magnetic code disk 6 and support multi-turn counting.
[0034] In an embodiment of the present utility model, multiple groups of temperature detection devices 45 are provided. The multiple groups of temperature detection devices 45 monitor in real time the real-time temperatures of the MCU main control chip 32, the gate driver 34, the bus communication chip 35, the brake control interface 36, the bus communication control interface 37, the torque sensor interface 38, as well as the heat-sensitive and heat-averse components and the motor, so as to prevent such devices from working in an environment where the rated temperature is exceeded. If the device temperature has reached or even exceeded the rated temperature, the main control chip will, according to the program settings, adopt measures such as enabling alarms, outputting in a low-power state, and stopping work to cope with it, so that it can operate stably in a high-temperature environment, with a large acceptable ambient temperature margin and is not easily prone to failures caused by its own generated heat. Further, there is a certain distance in space between the magnetic encoder head 41 and the heat-sensitive components, avoiding the situation of data drift caused by excessive temperature, and ensuring the accuracy of data acquisition and the operation stability in a high-temperature environment.
[0035] In an embodiment of the present utility model, through the torque sensor interface 38, the signal line is connected to the driver circuit board 3 along the central hole 11 of the housing, and the user can choose whether to install it. Through the bus communication control interface 37, the signal line is connected to the driver circuit board 3 along the central hole 11 of the housing, further saving the space required for connecting multiple modules. Further, the large magnetic code disk 5 is adapted to the motor output end, and the small magnetic code disk 6 is adapted to the module output end. The diameter difference between the inner hole of the large magnetic code disk 5 and the outer hole of the small magnetic code disk 6 is 6 mm, so as to avoid the magnetic field interference between the large magnetic code disk 5 and the small magnetic code disk 6 and avoid the risk of mutual collision. The large magnetic code disk 5 and the small magnetic code disk 6 can be nested with each other so that they are on the same horizontal plane, further compressing the space. In cooperation with the brake control interface 36, the bus communication control interface 37 and the torque sensor interface 38, there are rich reserved functional ports, which are convenient for users to expand functions, with certain options, facilitating customers to make selections according to the actual application scenarios. A motor output position is reserved, and customers can select a suitable frameless DC brushless motor according to their actual design requirements.
[0036] In an embodiment of the present utility model, a sealing assembly 7 is provided inside the housing body 1. The sealing assembly 7 includes a rubber ring 71 which is snap-fitted inside the housing body 1. The inner side of the rubber ring 71 is slidably and fittingly attached to the outer side of the plug-type brake 2. A rubber cover plate 72 is snap-fitted to the top of the rubber ring 71. A rubber ring 73 is fixedly installed inside the rubber ring 71. A fixing block 74 is fixedly installed on the rubber ring 73. One end of a spring plate 75 is fixedly installed on the outer side of the fixing block 74. When the plug-type brake 2 is inserted into the housing body 1, in cooperation with the rubber ring 71, the rubber cover plate 72, the rubber ring 73 and the fixing block 74, the spring plate 75 is squeezed and deformed inwardly. A thin shaft 76 is fixedly installed inside the other end of the spring plate 75. A roller 77 is rotatably installed on the outer side of the thin shaft 76. The outer side of the roller 77 is rollingly and fittingly attached to the inner wall of the rubber ring 71. Further, there are eight groups of the fixing block 74, the spring plate 75, the thin shaft 76 and the roller 77. The eight groups of the fixing block 74, the spring plate 75, the thin shaft 76 and the roller 77 are equally spaced in a circumferential array with the center of the circular cross-section of the rubber ring 73 as the array center. And there are four groups of the spring plate 75, the thin shaft 76 and the roller 77 on the outer side of a single group of the fixing block 74. This makes the sealing performance better. At the same time, in cooperation with the thin shaft 76, the rollers 77 move synchronously and rotate, so that the rubber ring 71 fits more tightly between the plug-type brake 2 and the housing body 1 through the elastic potential energy stored in the spring plate 75, making the sealing performance better, making the plug-type brake 2 more firm, and then enabling the servo motor driver body to operate better.
[0037] The above has generally described the present utility model in detail. However, based on the present utility model, some modifications or improvements can be made, which are obvious to those of ordinary skill in the technical field. Therefore, the modifications or improvements made without departing from the spirit of the present utility model are within the protection scope of the present utility model.
Claims
1. A hollow integrated servo motor driver assembly, comprising a housing body (1), characterized in that: A through housing center hole (11) is provided in the center of the housing body (1). A through small through groove (12) and a large through groove (13) are provided at one end of the housing body (1) away from its center of the circle. It further includes: A plug-type brake (2), and the plug-type brake (2) is clamped inside the housing body (1); A driver circuit board (3), the driver circuit board (3) is fixedly installed inside the bottom end of the housing body (1). A heat sink (31) is fixedly installed on the top of the driver circuit board (3). An MCU main control chip (32) is fixedly installed on the top of the driver circuit board (3). A through driver center hole (33) is provided in the center inside the driver circuit board (3). A gate driver (34) is fixedly installed on the top of the driver circuit board (3). A bus communication chip (35) and a brake control interface (36) are fixedly installed on the bottom of the driver circuit board (3). A bus communication control interface (37), a torque sensor interface (38), and a MOS transistor (39) are fixedly installed on the top of the driver circuit board (3); An encoder circuit board (4), the encoder circuit board (4) is fixedly installed inside the bottom end of the housing body (1). The encoder circuit board (4) is located below the driver circuit board (3). A magnetic encoder read head (41) and a thermal chip (42) are fixedly installed on the top of the encoder circuit board (4). A through encoder center hole (43) is provided in the center of the encoder circuit board (4). A servo control chip (44) and a temperature detection device (45) are fixedly installed on the top of the encoder circuit board (4); A large magnetic code disk (5), the large magnetic code disk (5) is clamped at the bottom end of the housing body (1). A small magnetic code disk (6) is nested inside the large magnetic code disk (5); The two magnetic encoder read heads (41) are adapted to the large magnetic code disk (5) and the small magnetic code disk (6), and support multi-turn counting.
2. The hollow integrated servo motor driver assembly according to claim 1, wherein: A sealing component (7) is arranged inside the housing body (1). The sealing component (7) includes a rubber ring (71). The rubber ring (71) is clamped inside the housing body (1). The inner side of the rubber ring (71) is slidably attached to the outer side of the plug-type brake (2). A rubber cover plate (72) is clamped at the top of the rubber ring (71).
3. The hollow integrated servo motor driver assembly according to claim 2, wherein: A rubber ring (73) is fixedly installed inside the rubber ring (71). A fixing block (74) is fixedly installed on the rubber ring (73). One end of a reed plate (75) is fixedly installed on the outer side of the fixing block (74). A thin shaft (76) is fixedly installed inside the other end of the reed plate (75). A roller (77) is rotatably installed on the outer side of the thin shaft (76). The outer side of the roller (77) is in rolling contact with the inner wall of the rubber ring (71).
4. The hollow integrated servo motor driver assembly according to claim 3, wherein: The fixed blocks (74), spring plates (75), thin shafts (76) and rollers (77) are provided in multiple groups, and the multiple groups of the fixed blocks (74), spring plates (75), thin shafts (76) and rollers (77) are equally spaced in a circumferential array with the center of the circular cross-section of the rubber ring (73) as the array center, and multiple groups of the spring plates (75), thin shafts (76) and rollers (77) are provided on the outside of a single group of the fixed blocks (74).
5. The hollow integrated servo motor driver assembly according to claim 1, wherein: The heat sinks (31) and small through grooves (12) are provided in multiple groups, and the multiple groups of the heat sinks (31) are circumferentially arrayed at the top of the driver circuit board (3) with the center of the circular cross-section of the driver circuit board (3) as the array center, and the multiple groups of the heat sinks (31) are respectively located inside the small through grooves (12).
6. The hollow integrated servo motor driver assembly according to claim 2, wherein: There are two paths of the magnetic encoder read heads (41), and the two paths of the magnetic encoder read heads (41) are located inside the large through groove (13).
7. The hollow integrated servo motor driver assembly according to claim 3, wherein: The temperature detection devices (45) are provided in multiple groups, and the multiple groups of the temperature detection devices (45) monitor the real-time temperatures of the heat-sensitive and heat-averse components such as the MCU main control chip (32), gate driver (34), bus communication chip (35), brake control interface (36), bus communication control interface (37), torque sensor interface (38) and MOS transistor (39), as well as the motor in real time, to prevent these devices from working in an environment where the temperature exceeds the rated temperature. If the device temperature has reached or even exceeded the rated temperature, the main control chip will, according to the program settings, enable alarms, low-power state output, stop working and other methods to deal with it.