Servo drive device and servo system

Abstract

The utility model discloses a servo driving device and a servo system, and relates to the automation technology field, the servo driving device comprises a device main body, a cover body and an encoder interface, the device main body is internally provided with a battery compartment used for installing a standby battery of an encoder, the battery compartment is provided with a power line used for being connected with an electrode of the standby battery, and the power line is connected with the encoder interface. The power line extends out of the battery compartment and is electrically connected with the encoder; the cover body covers the bin opening of the battery bin; the encoder interface is arranged adjacent to the battery compartment, and the encoder interface is used for being electrically connected with an encoder. According to the technical scheme of the utility model, the battery compartment is arranged in the servo driving device and is used for installing the standby battery of the encoder, so that the problem that the whole connecting line of the encoder is bloated due to the fact that the standby battery is installed on the connecting line of the encoder is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automation, in particular to a servo drive device and a servo system. Background Art

[0002] In the relevant existing technologies, the servo drive and encoder are key components. The servo drive is used to control the movement of the motor and achieve high-precision control by receiving the encoder feedback signal. The servo drive and encoder are two independent parts. The encoder usually requires a separate power supply, which is usually a battery. In order to facilitate battery replacement, in the existing technology, a battery box is usually designed on the encoder. The battery and a small circuit board with integrated capacitors and diodes are placed in the box, and the entire battery module is then bundled on the encoder's connecting cable. However, installing an external battery on the encoder's connecting cable makes the encoder's connecting cable appear particularly bloated. Utility Model Content

[0003] The main purpose of the utility model is to provide a servo drive device and a servo system, aiming to optimize the layout of the servo system.

[0004] To achieve the above-mentioned purpose, the servo drive device proposed in the present invention includes:

[0005] A device body, wherein the device body is provided with a battery compartment for installing a backup battery of the encoder, the battery compartment is provided with a power cord for connecting to the electrodes of the backup battery, and the power cord extends out of the battery compartment for electrically connecting to the encoder;

[0006] A cover body, the cover body being arranged to cover the opening of the battery compartment;

[0007] An encoder interface is provided on the device body and adjacent to the battery compartment, and the encoder interface is used for electrically connecting an encoder.

[0008] In one embodiment, a wire outlet groove is provided on a side of the bay opening facing the encoder interface, and the wire outlet groove is located between the cover body and the bay opening for avoiding the power line.

[0009] In one embodiment, the device body includes an outer shell and a face shell, the face shell is installed on the outer shell, the encoder interface and the battery compartment opening are provided on the face shell, and the length extension direction of the battery compartment is perpendicular to the side of the face shell where the opening is provided.

[0010] In one embodiment, the battery compartment and the face shell are integrally formed.

[0011] In one embodiment, the length extension direction of the battery compartment is perpendicular to the side of the cover on which the compartment opening is provided.

[0012] In one embodiment, the encoder interface is configured as a socket slot for plugging in a power cable of the encoder.

[0013] In one embodiment, the number of the battery compartments is multiple; the number of the socket slots is set corresponding to the number of the battery compartments.

[0014] In one embodiment, the plurality of battery compartments and the plurality of socket slots are respectively arranged along the first direction;

[0015] The battery compartment and the socket slot are arranged along the second direction.

[0016] In one embodiment, the cover body has a first end and a second end arranged opposite to each other along the first direction, the connection between the first end and the face shell is located above the battery compartment, the first end is rotatably connected to the face shell, and the second end is detachably connected to the face shell.

[0017] The present invention further provides a servo system, comprising the servo drive device described in any one of the aforementioned embodiments.

[0018] In one embodiment, there are multiple servo drive devices, and the multiple servo drive devices are arranged side by side.

[0019] The technical solution of the present invention solves the problem of the overall bloatedness of the encoder's connecting wires caused by the backup battery being installed on the encoder's connecting wires by arranging a battery compartment inside the servo drive device. In addition, arranging a battery compartment for installing the encoder's backup battery inside the servo drive device can better integrate with the electronic system of the servo drive device, making the connection between the battery and the encoder reliable and reducing the risk of poor contact. It also helps to reduce electromagnetic interference between the battery and other electronic components and improve the stability and accuracy of the encoder signal; it helps to achieve an integrated design of the equipment and make the layout of the entire servo system more compact and beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 A schematic structural diagram of an embodiment of a servo drive device provided by the present utility model;

[0022] Figure 2 A schematic structural diagram of another embodiment of the servo drive device provided by the present utility model;

[0023] Figure 3 A schematic structural diagram of another embodiment of the servo drive device provided by the present invention;

[0024] Figure 4 for Figure 3 Another side view;

[0025] Figure 5 Schematic diagram of the structure of the face shell;

[0026] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0027] Figure 7 for Figure 5 sectional view of

[0028] Figure 8 This is a structural diagram of an embodiment of a cover body;

[0029] Figure 9 for Figure 8 Another side view;

[0030] Figure 10 for Figure 9 Enlarged view of point E in the middle.

[0031] Description of Figure Numbers:

[0032] 10. Servo drive device;

[0033] 100. Device body; 110. Housing; 120. Surface shell; 121. Battery compartment; 122. Battery compartment opening; 123. Encoder interface; 124. Wire outlet slot; 125. Groove; 126. Second rotating portion; 127. Second positioning portion; 128. Slot; 129. Avoidance slot; 130. Mounting bracket;

[0034] 200, cover; 210, cover body; 211, first end; 212, second end; 220, first positioning portion; 230, first rotating portion; 240, bending portion; 250, buckle; 260, notch;

[0035] 300, spare battery;

[0036] 400. Power cord.

[0037] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0039] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0040] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0041] The utility model provides a servo drive device, aiming to optimize the structure of a servo system.

[0042] See also Figures 1 to 5 In one embodiment of the present utility model, the servo drive device 10 includes a device body 100, a cover body 200 and an encoder interface 123. The device body 100 is provided with a battery compartment 121 for installing a backup battery 20 of the encoder, and the battery compartment 121 is provided with a power cord 400 for connecting to the electrodes of the backup battery 300. The power cord 400 extends out of the battery compartment 121 for electrically connecting to the encoder; the cover body 200 is covered on the compartment opening 122 of the battery compartment 121; the encoder interface 123 is provided in the device body 100 and is adjacent to the battery compartment 121. The encoder interface is used to electrically connect to the encoder.

[0043] The servo drive 10 (also known as a servo driver) and the encoder are two separate components. The servo drive 10's primary function is to control the servo motor's motion. It receives command signals from a control system (such as a PLC or host computer), processes these signals, and generates appropriate current or voltage signals to drive the servo motor. The encoder is a sensor that measures parameters such as the servo motor's speed, position, and direction, and feeds this information back to the servo drive 10.

[0044] In this embodiment, the servo drive device 10 includes a main body 100 and a panel assembly. The main body 100 comprises a mounting bracket 130, a housing 110, a cover 120, and a circuit board. The panel assembly includes components such as a panel, a display, and operation buttons or indicator lights, providing a user operation and monitoring interface. The following describes these main structures in detail.

[0045] The mounting bracket 130 provides a stable mounting base for securing the servo drive device 10 within a cabinet or device. The mounting bracket 130 is typically secured to the bottom or side of the housing 110 and secured with screws or clips 250 to stabilize the device. The housing 110 is typically used to protect internal electronic components, provide structural support, and provide heat dissipation and electromagnetic shielding. The housing 110 is connected to the mounting bracket 130 via screws or clips 250 and secured in place. The front portion of the housing 110 is typically designed with a mounting position for the face shell 120, which is secured to the housing 110 via screws or clips 250. The face shell 120 primarily provides structural support. Components providing a user operation and monitoring interface, such as a panel, display, operating buttons, or indicator lights, are mounted on the face shell 120. Furthermore, the display and operating buttons on the face shell 120 are connected to the internal circuit board via connecting wires or connectors to achieve signal transmission. The circuit board includes a control circuit, a drive circuit, a feedback circuit, and a communication circuit, etc., and performs signal processing and drive control. The circuit board is usually mounted on a mounting bracket 130 and connected to a power source via a connecting wire or a socket.

[0046] Regarding the encoder interface 123 , the encoder interface 123 is used for electrically connecting to the encoder, and the electrical connection includes a power supply connection and a communication connection.

[0047] In this embodiment, the encoder is powered by a main power source and a backup battery 300. The main power source refers to the municipal power source, i.e., the electricity supplied by the municipal public grid. The backup battery 300 can be electrically connected to the main power source. This means that when the backup battery 300 is depleted or its charge level drops below a set value (e.g., 20%), the main power source can charge the backup battery 300. The backup battery 300 can also be a completely independent battery. This means that when the backup battery 300 is depleted, it can only be replaced by another battery with sufficient charge level.

[0048] The technical solution of the present invention is to provide a battery compartment 121 inside the servo drive device 10, and the battery compartment 121 is used to install a backup battery for the encoder, thereby solving the problem of the overall bloated encoder connection line caused by the backup battery being installed on the encoder connection line. In addition, the battery compartment 121 for installing the backup battery of the encoder is provided inside the servo drive device 10, which can be better integrated with the electronic system of the servo drive device 10, so that the connection between the battery and the encoder is reliable, and the risk of poor contact is reduced. It also helps to reduce electromagnetic interference between the battery and other electronic components, and improve the stability and accuracy of the encoder signal; it helps to achieve an integrated design of the equipment, and makes the layout of the entire servo system more compact and beautiful.

[0049] Furthermore, in this embodiment, the battery compartment 121 is designed to be within the device body 100 and covered by a separate cover 200, making it easier for technicians to replace and maintain the backup battery 300. In addition, by locating the encoder interface 123 adjacent to the battery compartment 121, the length of the power cord 400 can be shortened.

[0050] In one embodiment, a cable outlet slot 124 is provided on the side of the opening 122 facing the encoder interface 123. The cable outlet slot 124 is located between the cover 200 and the opening 123 and is used to circumvent the power cord 400. Thus, by providing the cable outlet slot 124, this embodiment effectively prevents the power cord 300 from being pinched or squeezed, thereby extending the service life of the power cord 300. Furthermore, the cable outlet slot 124 helps to arrange the power cord 300 more neatly, preventing the power cord 300 from becoming tangled. This not only improves aesthetics but also reduces operational inconvenience or safety hazards caused by a tangled power cord 300.

[0051] In one embodiment, see Figure 5The battery compartment 121 has two opposing side surfaces along its length, and the opening 122 of the battery compartment 121 is located on one of the side surfaces. In other words, the opening 122 of the battery compartment 121 is located on the end surface of the battery compartment 121 where the short side is located. This prevents the battery from falling out when removing the backup battery. In this embodiment, the backup battery is typically an integrated battery module.

[0052] On the basis of the previous embodiment, in order to facilitate the user to replace the backup battery 300, the device body 100 includes a shell 110 and a cover 120. The cover 120 is mounted on the shell 110, and the encoder interface 123 and the hatch 122 of the battery compartment 121 are provided on the cover 120. Thus, in this embodiment, the hatch 122 of the battery compartment 121 is provided on the cover 120, and the hatch 122 of the battery compartment 121 is provided on the end surface where the short side of the battery compartment 121 is located. In this way, the opening area of ​​the cover 120 forming the battery compartment 121 can be reduced, thereby strengthening the structural strength of the cover 120. In addition, with this arrangement, since the area of ​​the hatch 122 is relatively small, multiple hatches 122 of the battery compartment 121 can be provided on the cover 120.

[0053] In one embodiment, to further simplify the internal structure of the servo drive device 10, the battery compartment 121 is integrally formed with the housing 120. This integral formation of the battery compartment 121 and housing 120 reduces the number of assembly steps and required parts, thereby lowering production costs. By reducing the number of parts and assembly steps, production efficiency can be improved. Furthermore, the integral formation of the battery compartment 121 and housing 120 creates a more compact and integrated design, thereby improving the product's aesthetics and functionality. This allows for better optimization of the internal space layout.

[0054] In one embodiment, the battery compartment 121 is arranged perpendicular to the side of the housing 120 where the compartment opening 122 is provided. This arrangement of the battery compartment 121 being placed perpendicular to the housing 120 allows for more efficient use of the internal space within the drive, particularly for a dual-axis servo drive device 10.

[0055] In a preferred embodiment, the encoder interface 123 is configured as a socket slot for plugging in the encoder's power cable. The front cover 120 is provided with a cable outlet slot 124, through which the battery compartment 121 and the socket slot communicate. This embodiment, by arranging the battery cable outlet slot 124 to communicate with the encoder's socket slot, not only achieves a compact structure and saves space, but also provides a more harmonious and aesthetically pleasing appearance. This design allows the battery cable to exit from the side of the flip cover, cleverly connecting to the socket slot and connecting to the encoder's electrical cable outlet via terminals.

[0056] In another embodiment, to improve the adaptability of the servo drive device 10, the number of battery compartments 121 is multiple, and the number of socket slots corresponds to the number of battery compartments 121. In this way, the battery built into the servo drive device 10 can power multiple encoders, thereby improving the adaptability of the servo drive device 10.

[0057] In one embodiment, the plurality of battery compartments 121 and the plurality of socket slots are arranged along a first direction, and the plurality of battery compartments 121 and the plurality of socket slots are arranged along a second direction. This arrangement of the plurality of battery compartments 121 and the plurality of socket slots not only provides a compact structure and saves space, but also facilitates wiring of the servo drive device 10.

[0058] Regarding the first direction and the second direction, exemplarily, the first direction is generally the length direction of the face shell 120 , and the second direction is the width direction of the face shell 120 . In some embodiments, the first direction may be a vertical direction, and the second direction may be a horizontal direction of the face shell 120 .

[0059] In one embodiment, the servo drive device 10 further includes a cover 200, which is used to cover or open the openings 122 of the plurality of battery compartments 121. The cover 200 has a first end 211 and a second end 212 disposed opposite each other along the first direction. The connection between the first end 211 and the housing 120 is located above the battery compartment 121. The first end 211 is rotatably connected to the housing 120, and the second end 212 is detachably connected to the housing 120. In this embodiment, the arrangement of the cover 200 of the battery compartment 121 makes it easy to open the cover 200, which has the advantage of convenient installation. In addition, the maintenance and installation operation space for the batteries is designed to be directly in front of the operator, which not only provides ample operating space for the operator but also facilitates observation and facilitates timely detection of problems.

[0060] See also Figures 1 to 10 In one embodiment of the present utility model, the servo drive device 10 includes a device body 100 and a cover body 200, and the outer surface of the device body 100 is provided with an opening; the cover body 200 includes a cover body 210 and a first positioning portion 220 provided on the cover body 210, and the cover body 210 is provided on the device body 100 and can be rotatably switched between a first position and a second position. The cover body 210 covers the opening when in the first position and opens the opening when in the second position. The first positioning portion 220 is used to position the cover body 210 in the second position so that the opening remains open.

[0061] The opening is typically a mounting opening corresponding to a front cover, decorative cover, interface protective cover, maintenance port protective cover, or display cover. In this embodiment, the main structure of the device body 100 includes a mounting bracket 130, a housing 110, a housing 120, a circuit board, etc. The opening can be provided on the housing 110 or the housing 120. In an exemplary embodiment, the device body 100 includes a housing 120, and the opening is provided on the housing 120, and the opening is a compartment 122 of the battery compartment 121.

[0062] In the technical solution of the present invention, since the cover 200 can be rotated between a first position and a second position, the user can easily open or close the opening on the device body 100, reducing the tedious steps required to remove and install the cover 200 during maintenance and inspection, thereby improving operational convenience. Furthermore, the provision of the first positioning portion 220 ensures that the cover body 210 remains open in the second position. When operating or maintaining the device, the user no longer needs to secure the cover 200 in any other way, allowing for quick access to internal components and shortening work time, thereby improving the convenience of working within the service drive device. Furthermore, the cover 200 is prevented from accidentally closing during operation, thereby ensuring operator safety and operational continuity.

[0063] The cover body 210 can be a regular shape such as a circle, an ellipse or a square, or can be other irregular shapes, mainly to match the shape of the opening. For ease of description, the following will take the cover body 210 as a square as an example.

[0064] In one embodiment, see Figure 1 and Figure 9 The cover body 210 has a first end 211 and a second end 212 that are relatively arranged along the first direction. The first end 211 is rotatably connected to the device body 100, and the second end 212 is detachably connected to the device body 100. The first positioning portion 220 is provided at the first end 211 of the cover body 210.

[0065] Regarding the first direction, in this embodiment, the first direction is the length direction of the cover body 210 . In other embodiments, the first direction may also be the width direction of the cover body 210 , and so on.

[0066] In one embodiment, the device body 100 is provided with a groove 125 at the opening, and first rotating portions 230 are provided on opposite sides of the first end 211 of the cover body 210. A second rotating portion 126 is provided within the groove 125 and is rotatably connected to the first rotating portion 230. Thus, in this embodiment, by providing the groove 125 and inserting the cover body 200 into the device body 100, dust accumulation at the opening can be reduced, thereby improving the aesthetics of the drive device.

[0067] In one embodiment, a bend 240 is provided on each side of the first end 211 of the cover body 210, folded toward the groove 125. The bend 240 includes the first rotating portion 230 and the first positioning portion 220. The end surface of the bend 240 facing the groove 125 is convexly curved. Thus, in this embodiment, the convexly curved end surface of the bend 240 facing the groove 125 effectively disperses stress and reduces single-point stress, thereby improving the durability of the cover 200 and the rotating components and extending their service life. The provision of the first rotating portion 230 and the first positioning portion 220 makes the cover 200 smoother during opening and closing, reduces operational resistance, and enhances the user experience.

[0068] In one embodiment, the first rotating portion 230 is configured as a rotating shaft, and the second rotating portion 126 is configured as an axial hole adapted to fit within the rotating shaft. The device body 100 further includes an escape groove 129 communicating with the axial hole and the recess 125, respectively. Compared to an embodiment in which the second rotating portion 126 is configured as a rotating shaft and the first rotating portion 230 is configured as an axial hole adapted to fit within the rotating shaft, this embodiment can reduce the thickness of the cover body 210 and improve the stability of the rotating structure between the cover body 200 and the device body 100.

[0069] In one embodiment, the axial lengths of the two first rotating parts 230 are not equal. Furthermore, a guide bevel is provided at one end of the first rotating part 230 away from the cover body 210. In this embodiment, the design of the guide bevel can guide the first rotating part 230 to align more easily and enter the second rotating part 126, thereby simplifying the assembly process and improving assembly efficiency. The different axial lengths of the first rotating parts 230 can reduce the jamming phenomenon that occurs during the opening and closing process of the device, making the rotation of the cover body 210 smoother and more stable. It is understandable that the difference in the axial length of the two first rotating parts 230 should not be too large, and is generally between 1 mm and 5 mm.

[0070] In one embodiment, a second positioning portion 127 is provided in the groove 125, and the first positioning portion 220 and the second positioning portion 127 are convex strips; the cover body 210 also includes a third position, and the third position is the maximum rotation stroke position of the cover body 210; in the first position and the third position, the first positioning portion 220 and the second positioning portion 127 are staggered; in the second position, the first positioning portion 220 and the second positioning portion 127 are abutted.

[0071] Among them, the cover body 200 is closed (first position), the cover body 200 is in the middle position of opening (second position), and the cover body 200 is in the maximum opening position (third position). The first positioning portion 220 of the cover body 200 and the second positioning portion 127 of the face shell 120 corresponding to the two situations of the cover body 200 being closed and the cover body 200 being in the maximum opening position just do not interfere with each other, while in the middle position of the cover body 200 opening (here, all situations except the cover body 200 being closed and the cover body 200 being in the maximum opening position are referred to as the middle position), the positioning ribs of both the cover body 200 and the face shell 120 interfere with each other, so there will be a feeling of interference damping during the opening process.

[0072] In one embodiment, at least two latches 250 are provided at the other end of the short side of the cover body 210. The recess 125 includes a latching slot 128 adapted to engage with the latches 250. The at least two latches 250 are spaced apart, and the cover body 210 includes a notch 260 between any two adjacent latches 250. Preferably, the walls of the recess 125 are angled to correspond to the position of the notch 260, making it easier for the user to open the cover body 210.

[0073] The present invention also provides a servo system, which includes a servo drive device 10. The specific structure of the servo drive device 10 is referred to the above embodiment. Since the present servo system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. Due to its high precision, high response speed and high reliability, the servo system is widely used in industrial automation (such as CNC machine tools, automated production lines, packaging machinery, etc.), robots (such as industrial robots, service robots, medical robots, etc.), aerospace (such as aircraft attitude control, satellite antenna control, etc.) and precision instruments (such as microscope autofocus systems, optical equipment, etc.).

[0074] The core components of the servo system include a servo drive 10, a servo motor, and a feedback device (such as an encoder). The following is a detailed introduction to the servo system.

[0075] The servo drive device 10 generally includes a control module, a power module, a feedback module and a communication interface. The servo drive device 10 receives a command signal from a control system and generates a current or voltage signal after processing to control the operation of the servo motor.

[0076] The servo motor performs precise rotation or linear motion according to the instructions of the servo drive device 10. Common servo motors include AC servo motors, DC servo motors and stepper motors.

[0077] The feedback device feeds back information such as the actual position, speed, or torque of the motor to the servo drive 10 to achieve closed-loop control. Common feedback devices include incremental encoders, absolute encoders, and resolvers.

[0078] Working principle of servo system: servo system usually adopts closed-loop control principle, and continuously adjusts the running state of the motor to achieve the desired control target. Its working process is as follows:

[0079] Command signal input: The control system (such as a PLC or a host computer) sends a control signal (position, speed or torque command) to the servo drive device 10.

[0080] Driving signal generation: The servo driving device 10 calculates the required driving current or voltage according to the command signal and outputs it to the servo motor.

[0081] Motor motion execution: The servo motor performs the corresponding motion task (rotation or linear motion) according to the drive signal.

[0082] Feedback signal acquisition: The feedback device measures the actual motion state of the motor and feeds this data back to the servo drive device 10.

[0083] Closed-loop control adjustment: The servo drive device 10 adjusts the drive signal in real time according to the difference between the feedback signal and the command signal to ensure the motor's motion accuracy and response speed.

[0084] In one embodiment, multiple servo drive devices 10 are arranged side by side. This embodiment, by arranging multiple servo drive devices 10 side by side, can achieve better synchronized operation, improving the overall system response speed and operating efficiency, particularly when multiple servo drive devices 10 need to operate in a coordinated manner. Furthermore, the parallel arrangement of multiple servo drive devices 10 simplifies the layout of cables and pipelines because all devices are on the same plane, resulting in fewer cable lengths and fewer connection points, reducing wiring complexity and potential connection failures.

[0085] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A servo drive device, characterized in that: include: A device body, wherein the device body is provided with a battery compartment for installing a backup battery of the encoder, the battery compartment is provided with a power cord for connecting to the electrodes of the backup battery, and the power cord extends out of the battery compartment for electrically connecting to the encoder; A cover body, the cover body being arranged to cover the opening of the battery compartment; An encoder interface is provided on the device body and adjacent to the battery compartment, the encoder interface being used to electrically connect to the encoder; The encoder interface is configured as a socket slot for plugging in the encoder's power cable; There are multiple battery compartments, and the number of the socket slots is set corresponding to the number of the battery compartments.

2. The servo drive device according to claim 1, wherein: A wire outlet groove is provided on the side of the hatch facing the encoder interface. The wire outlet groove is located between the cover and the hatch and is used to avoid the power line.

3. The servo drive device according to claim 2, wherein: The device body includes an outer shell and a face shell, the face shell is installed on the outer shell, the encoder interface and the battery compartment opening are provided on the face shell, and the length extension direction of the battery compartment is perpendicular to the side of the face shell where the opening is provided.

4. The servo drive device according to claim 3, wherein: The battery compartment and the face shell are integrally formed.

5. The servo drive device according to claim 3, wherein: The plurality of battery compartments and the plurality of socket slots are respectively arranged along a first direction; the battery compartments and the socket slots are arranged along a second direction.

6. The servo drive device according to claim 5, characterized in that: The cover body has a first end and a second end arranged opposite to each other along the first direction. The connection between the first end and the face shell is located above the battery compartment. The first end is rotatably connected to the face shell, and the second end is detachably connected to the face shell.

7. A servo system, characterized in that: The utility model comprises a servo motor and a servo drive device according to any one of claims 1 to 6.

8. The servo system according to claim 7, wherein: There are multiple servo drive devices, and the multiple servo drive devices are arranged side by side.

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