A hollow integrated servo motor driver

Abstract

The present invention relates to the technical field of servo motor drivers, and discloses a hollow integrated servo motor driver, the hollow integrated servo motor driver comprising a shell body, a through shell center hole is provided in the center of the shell body, a through small through slot and a large through slot are provided at one end of the shell body away from the center of the circle, and a latch-type brake is also provided, the shell body is internally clamped with a latch-type brake, and the latch-type brake is used to make the structure simpler and easier to control. The hollow integrated servo motor driver is used to stably operate in a high temperature environment, has a large acceptable ambient temperature margin, and is not prone to failures due to the heat generated by itself, and is equipped with a small through slot, a large through slot, a driver circuit board, a heat sink, a driver center hole, an encoder center hole and a temperature detection device, so that it can stably operate in a high temperature environment, has a large acceptable ambient temperature margin, and is not prone to failures due to the heat generated by itself.

Description

Technical Field

[0001] The invention relates to the technical field of servo motor drivers, in particular to a hollow integrated servo motor driver. Background Art

[0002] A servo motor is 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 control the speed and position very accurately, and can convert voltage signals into matrices and speeds to drive the controlled object.

[0003] A servo drive, 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 a frequency converter on an ordinary AC motor. It is part of a servo system and is mainly used in high-precision positioning systems.

[0004] The existing servo motors and servo drivers take up a lot of 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, and the hollow integrated design is not adopted, which makes the wiring layout more complicated and extremely inconvenient to use. In addition, there is a lack of effective heat dissipation mechanism, which leads to the inability to operate stably in a high temperature environment. The acceptable ambient temperature margin is not large, and it is easy to cause failures due to the heat generated by itself. In addition, the interface is not rich enough, and the subsequent connection of equipment is troublesome. In view of this, we propose a hollow integrated servo motor driver. Summary of the invention

[0005] The object of the present invention is to provide a hollow integrated servo motor driver to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A hollow integrated servo motor driver comprises a housing body, wherein a central housing hole is provided at the center of the housing body, a small through slot and a large through slot are provided at one end of the housing body away from the center of the circle, and further comprises:

[0008] A latch-type brake is clamped inside the housing body, and the latch-type brake makes the structure simpler and easier to control, and is less likely to cause the risk of brake locking;

[0009] A driver circuit board, wherein a driver circuit board 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 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 on the bottom of the driver circuit board, and a bus communication control interface, a torque sensor interface and a MOS tube are fixedly installed on the top of the driver circuit board;

[0010] An encoder circuit board, wherein 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 and a thermistor chip are fixedly installed on the top of the encoder circuit board, a penetrating encoder center hole is opened in the center of the encoder circuit board, and a servo control chip and a temperature detection device are fixedly installed on the top of the encoder circuit board;

[0011] A large magnetic code disk is clamped on the bottom end of the shell body, a small magnetic code disk is nested inside the large magnetic code disk, the large magnetic code disk is adapted to the motor output end, the small magnetic code disk is adapted to the module output end, and the diameter difference between the inner hole of the large magnetic code disk and the outer hole of the small magnetic code disk is 6 mm, so as to avoid magnetic field interference between the large magnetic code disk and the small magnetic code disk and avoid the risk of collision between them. The large magnetic code disk and the small magnetic code disk can be nested with each other so that they are in the same horizontal plane, further compressing the space.

[0012] Preferably, the heat sink and the small through groove are provided in multiple groups, and the multiple groups of heat sinks are arrayed on the top of the driver circuit board with the center of the circular cross-section of the driver circuit board as the center of the array, and the multiple groups of heat sinks are respectively located on the inner sides of the small through grooves. The heat sink and the small through grooves are used to conduct away the heat generated by high-heat components such as the MCU main control chip, gate driver, bus communication chip, MOS tube and servo control chip in the servo driver body, so that such components can still operate at the rated temperature even in a high temperature environment.

[0013] Preferably, the magnetic encoder reading heads are provided with two paths, and the two paths of the magnetic encoder reading heads are located inside the large through slot.

[0014] Preferably, the temperature detection device is provided with multiple groups, and the multiple groups of temperature detection devices monitor in real time the real-time temperature of the MCU main control chip, gate driver, bus communication chip, brake control interface, bus communication control interface, torque sensor interface, MOS tube heat-sensitive and heat-averse components and motors to prevent such devices from operating in an environment exceeding the rated temperature. If the device temperature has reached or even exceeded the rated temperature, the main control chip will respond by enabling alarms, low-power state output, stopping work, etc. according to the program settings.

[0015] Preferably, there is a certain distance between the magnetic encoder reading head and the heat-prone element in space to avoid data drift caused by excessive temperature, thereby ensuring the accuracy of data collection and operational stability in a high-temperature environment.

[0016] Preferably, through the torque sensor interface, the signal line is connected to the driver circuit board along the center hole of the shell, and the user can choose whether to install it. Through the bus communication control interface, the signal line is connected to the driver circuit board along the center hole of the shell, further saving the space required for connecting multiple modules.

[0017] Preferably, a sealing assembly is provided inside the shell body, and the sealing assembly includes a rubber ring, a rubber ring is clamped inside the shell body, the inner side of the rubber ring slides in contact with the outer side of the latch type brake, a rubber cover plate is clamped on the top 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 outside the fixing block, a thin shaft is fixedly installed inside the other end of the spring plate, a roller is rotatably installed on the outer side of the thin shaft, and the outer side of the roller rolls in contact with the inner wall of the rubber ring.

[0018] Preferably, the fixed block, spring plate, thin shaft and roller are provided in multiple groups, and the multiple groups of fixed blocks, spring plates, thin shafts and rollers are arranged in a circular array with equal spacing around the center of the circular cross-section of the rubber ring as the array center, and the spring plates, thin shafts and rollers outside a single group of fixed blocks are provided in multiple groups, thereby achieving better sealing.

[0019] Compared with the prior art, the present invention provides a hollow integrated servo motor driver, which has the following beneficial effects:

[0020] 1. In order to operate stably in a high temperature environment, the acceptable ambient temperature margin is large and it is not easy to malfunction due to the heat generated by itself. With the small through slot, large through slot, driver circuit board, heat sink, driver center hole, encoder center hole and temperature detection device, it can operate stably in a high temperature environment, the acceptable ambient temperature margin is large and it is not easy to malfunction due to the heat generated by itself.

[0021] 2. In order to facilitate users to expand functions, there are certain options, which are convenient for customers to make choices based on actual application scenarios. Together with the MCU main control chip, gate driver, bus communication chip, brake control interface, bus communication control interface, torque sensor interface, MOS tube, encoder circuit board, magnetic encoder reader, thermistor chip and servo control chip, it is convenient for users to expand functions. There are certain options, which are convenient for customers to make choices based on actual application scenarios.

[0022] 3. In order to further improve the stability and adaptability of the servo motor driver body, there is a certain distance between the magnetic encoder reader and the heat-prone components in space to avoid data drift caused by excessive temperature, ensure the accuracy of data acquisition and operational stability in high temperature environments, and reserve installation holes and control interfaces for the latch-type brake. Customers can select the appropriate frameless DC brushless motor according to actual design requirements.

[0023] 4. In order to make the servo motor driver body operate better, a sealing assembly is provided. When the latch type brake is inserted into the shell body, the rubber ring, rubber cover plate, rubber ring, fixing block, spring plate, thin shaft and roller are matched to make the rubber ring compressed between the latch type brake and the shell body, so as to make the sealing better, thereby making the latch type brake more firm, and then making the servo motor driver body operate better. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of an overall structural explosion of the present invention;

[0025] Figure 2 This is a schematic diagram of the driver circuit board and some structural connections of the present invention;

[0026] Figure 3 It is a front view schematic diagram of the structure of the encoder circuit board of the present invention;

[0027] Figure 4 It is a schematic diagram of the reverse side of the structure of the encoder circuit board of the present invention;

[0028] Figure 5 It is a bottom exploded schematic diagram of the housing body and some structures of the present invention;

[0029] Figure 6 It is a schematic exploded top view of the housing body and some structures of the present invention;

[0030] Figure 7 It is a schematic top view of the housing body and some structures of the present invention;

[0031] Figure 8 It is a bottom view schematic diagram of the housing body and some structures of the present invention;

[0032] Fig. 9 It is a schematic diagram of the connection between the shell body and some structures of the present invention;

[0033] Fig.10 It is a cross-sectional schematic diagram of the rubber ring of the present invention;

[0034] Fig.11 This is a schematic diagram of the connection of the rubber ring and some structures of the present invention;

[0035] Fig.12 For the present invention Fig.11 Schematic diagram of the enlarged structure of area A in the middle.

[0036] In the figure: 1. Shell body; 11. Shell center hole; 12. Small through slot; 13. Large through slot; 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 reader; 42. Thermistor 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; 73. Rubber ring; 74. Fixing block; 75. Spring plate; 76. Thin shaft; 77. Roller. DETAILED DESCRIPTION

[0037] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. 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 number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] See also Figure 1-12 , the present invention provides a technical solution:

[0040] A hollow integrated servo motor driver comprises a shell body 1, a shell center hole 11 is provided at the center of the shell body 1, a small through groove 12 and a large through groove 13 are provided at one end of the shell body 1 away from the center of the circle, and a latch brake 2 is provided. The shell body 1 is internally clamped with the latch brake 2. The latch brake 2 makes the structure simpler and easier to control, and the risk of brake locking is not easy to occur. A driver circuit board 3 is fixedly installed inside the bottom end of the shell 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 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, and the driver circuit board 3 is fixedly installed. A bus communication control interface 37, a torque sensor interface 38 and a MOS tube 39 are fixedly installed on the top of the housing 1. An encoder circuit board 4 is fixedly installed inside the bottom of the housing 1. The encoder circuit board 4 is located below the driver circuit board 3, so that components that are prone to heat are arranged in the upper layer and placed on the driver circuit board 3, and components that are more sensitive to high temperature are arranged in the lower layer and placed on the encoder circuit board 4. A magnetic encoder reader 41 and a thermistor chip 42 are fixedly installed on the top of the encoder circuit board 4. A penetrating 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 temperature detection device 45 can monitor the operating status in real time and make adaptive responses according to different situations. A large magnetic code disk 5 is clamped at the bottom of the housing 1, and a small magnetic code disk 6 is nested inside the large magnetic code disk 5.

[0041] In one embodiment of the present invention, multiple groups of heat sinks 31 and small through grooves 12 are provided, and the multiple groups of heat sinks 31 are arrayed on the top of the driver circuit board 3 with the center of the circular cross-section of the driver circuit board 3 as the center of the array, and the multiple groups of heat sinks 31 are respectively located on the inner side of the small through grooves 12, and the heat sinks 31 and the small through grooves 12 cooperate to conduct the heat generated by 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 such components can still operate at the rated temperature even in a high temperature environment. Furthermore, the magnetic encoder reader 41 is provided with two paths, and the two-path magnetic encoder reader 41 is located on the inner side of the large through groove 13. Furthermore, the two-path magnetic encoder reader 41 is adapted to the large magnetic code disk 5 and the small magnetic code disk 6, and supports multi-turn counting.

[0042] In one embodiment of the present invention, a plurality of temperature detection devices 45 are provided, and the plurality of temperature detection devices 45 monitor in real time the real-time temperature of heat-prone and heat-averse components and motors 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, and the MOS tube 39 to prevent such components from operating in an environment exceeding the rated temperature. If the temperature of the equipment has reached or even exceeded the rated temperature, the main control chip will respond by enabling alarms, low-power state output, stopping work, etc. according to the program settings, so that it can operate stably in a high temperature environment, with a large acceptable ambient temperature margin, and is not prone to failure due to the heat generated by itself. Furthermore, there is a certain distance in space between the magnetic encoder reader 41 and the heat-prone components to avoid data drift caused by excessive temperature, thereby ensuring the accuracy of data acquisition and the operating stability in a high temperature environment.

[0043] In one embodiment of the present invention, through the torque sensor interface 38, the signal line is connected to the driver circuit board 3 along the center hole 11 of the shell, 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 center hole 11 of the shell, further saving the space required for connecting multiple modules. Furthermore, 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 collision with each other. The large magnetic code disk 5 and the small magnetic code disk 6 can be nested with each other so that they are in the same horizontal plane, further compressing the space, cooperating with the brake control interface 36, the bus communication control interface 37 and the torque sensor interface 38, the reserved function ports are rich, which is convenient for users to expand functions, and there are certain options, which is convenient for customers to make choices based on actual application scenarios, and the motor output position is reserved. Customers can select a suitable frameless DC brushless motor according to actual design requirements.

[0044] In one embodiment of the present invention, a sealing assembly 7 is provided on the inner side of the shell body 1, and the sealing assembly 7 includes a rubber ring 71. The rubber ring 71 is clamped inside the shell body 1, and the inner side of the rubber ring 71 slides and fits the outer side of the latch-type brake 2. A rubber cover plate 72 is clamped on the top of the rubber ring 71. A rubber ring 73 is fixedly installed inside the rubber ring 71, and 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 latch-type brake 2 is inserted into the shell body 1, the rubber ring 71, the rubber cover plate 72, the rubber ring 73 and the fixing block 74 are matched so that the spring plate 75 is squeezed and buckled inwardly. A thin shaft 76 is fixedly installed inside the other end of the spring plate 75, and a roller 77 is rotatably installed on the outer side of the thin shaft 76. The outer side of the roller 77 Rollingly fitting on the inner wall of the rubber ring 71, further, eight groups of fixed blocks 74, spring plates 75, thin shafts 76 and rollers 77 are provided, and the eight groups of fixed blocks 74, spring plates 75, thin shafts 76 and rollers 77 are all arranged in a circular array with equal spacing with the center of the circular cross-section of the rubber ring 73 as the center of the array, and four groups of spring plates 75, thin shafts 76 and rollers 77 on the outer side of a single group of fixed blocks 74 are provided, so that the sealing is better, and at the same time, the roller 77 is rotated while moving synchronously with the thin shaft 76, so that the elastic potential energy accumulated by the spring plate 75 makes the rubber ring 71 fit more closely between the pin-type brake 2 and the shell body 1, so that the sealing is better, thereby making the pin-type brake 2 more secure, and then making the servo motor driver body run better.

[0045] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A hollow integrated servo motor driver, comprising a housing body (1), characterized in that: The shell body (1) has a central hole (11) extending therethrough at its center, and an end of the shell body (1) away from its center has a small through groove (12) and a large through groove (13) extending therethrough, and further comprises: A latch-type brake (2), wherein the housing body (1) is internally clamped with the latch-type brake (2); A driver circuit board (3), wherein the driver circuit board (3) is fixedly mounted inside the bottom of the housing body (1), a heat sink (31) is fixedly mounted on the top of the driver circuit board (3), an MCU main control chip (32) is fixedly mounted on the top of the driver circuit board (3), a driver center hole (33) is provided in the center of the driver circuit board (3) and passes through it, a gate driver (34) is fixedly mounted on the top of the driver circuit board (3), a bus communication chip (35) and a brake control interface (36) are fixedly mounted on the bottom of the driver circuit board (3), and a bus communication control interface (37), a torque sensor interface (38) and a MOS tube (39) are fixedly mounted on the top of the driver circuit board (3); An encoder circuit board (4), wherein an encoder circuit board (4) is fixedly mounted 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 reader (41) and a thermistor chip (42) are fixedly mounted on the top of the encoder circuit board (4), a penetrating encoder center hole (43) is provided in the center of the encoder circuit board (4), and a servo control chip (44) and a temperature detection device (45) are fixedly mounted on the top of the encoder circuit board (4); A large magnetic code disk (5), the bottom end of the shell body (1) is clamped with the large magnetic code disk (5), and a small magnetic code disk (6) is nested inside the large magnetic code disk (5); the large magnetic code disk (5) is adapted to the output end of the motor, and the small magnetic code disk (6) is adapted to the output end of the module, and 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.

2. The hollow integrated servo motor driver according to claim 1, characterized in that: The heat sink (31) and the small through slot (12) are provided in a plurality of groups, and the plurality of groups of heat sinks (31) are arranged in an array 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 center of the array, and the plurality of groups of heat sinks (31) are respectively located on the inner side of the small through slot (12).

3. The hollow integrated servo motor driver according to claim 2, characterized in that: The magnetic encoder reading heads (41) are provided with two paths, and the two paths of the magnetic encoder reading heads (41) are located inside the large through slot (13).

4. The hollow integrated servo motor driver according to claim 3, characterized in that: The temperature detection device (45) is provided with a plurality of groups, and the plurality of groups of the temperature detection device (45) monitors in real time the real-time temperature 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), and the MOS tube (39), heat-sensitive and heat-averse components and the motor, so as to prevent such components from operating in an environment exceeding the rated temperature. If the temperature of the device has reached or even exceeded the rated temperature, the main control chip will, according to the program setting, enable an alarm, a low-power state output, or a stop working mode to respond.

5. The hollow integrated servo motor driver according to claim 4, characterized in that: The magnetic encoder reading head (41) is at a certain distance from the heat-prone element in space, thereby avoiding data drift caused by excessive temperature, and ensuring the accuracy of data collection and operational stability in a high-temperature environment.

6. The hollow integrated servo motor driver according to claim 5, characterized in that: Through the torque sensor interface (38), the signal line is connected to the driver circuit board (3) along the center hole (11) of the shell, 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 center hole (11) of the shell, further saving the space required for connecting multiple modules.

7. The hollow integrated servo motor driver according to claim 1, characterized in that: A sealing assembly (7) is arranged on the inner side of the shell body (1), and the sealing assembly (7) comprises a rubber ring (71). The rubber ring (71) is clamped inside the shell body (1), and the inner side of the rubber ring (71) is slidably fitted on the outer side of the latch-type brake (2).

8. The hollow integrated servo motor driver according to claim 7, characterized in that: A rubber cover plate (72) is clamped on the top of the rubber ring (71), a rubber ring (73) is fixedly mounted inside the rubber ring (71), a fixing block (74) is fixedly mounted on the rubber ring (73), one end of a spring plate (75) is fixedly mounted on the outside of the fixing block (74), a thin shaft (76) is fixedly mounted inside the other end of the spring plate (75), a roller (77) is rotatably mounted on the outside of the thin shaft (76), and the outside of the roller (77) rolls and fits against the inner wall of the rubber ring (71).

9. The hollow integrated servo motor driver according to claim 8, characterized in that: The fixing block (74), the spring plate (75), the thin shaft (76) and the roller (77) are provided in multiple groups.

10. The hollow integrated servo motor driver according to claim 9, characterized in that: The plurality of groups of the fixing blocks (74), spring plates (75), thin shafts (76) and rollers (77) are arranged in a circular array with equal spacing, with the center of the circular cross section of the rubber ring (73) as the center of the array, and a plurality of groups of the spring plates (75), thin shafts (76) and rollers (77) are arranged outside a single group of the fixing blocks (74).

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