A protection device for a servo driver

Abstract

The utility model provides a kind of protective device of servo driver, and protective device includes: device box, interface part, power supply part and threaded guide part;Form protective cavity for accommodating servo driver in device box;Interface part includes multiple for accessing interface terminal avoidance hole, and avoidance hole is opened on the outer surface of device box;Power supply part includes an avoidance mouth for accessing power supply terminal, and avoidance mouth is opened on the outer surface of device box;Threaded guide part includes multiple guide column on the inner wall of protective cavity along height direction, and guide column is used to guide bottom plate and device box thread connection, so that servo driver is installed in protective cavity.The utility model can solve the problem that servo driver is mostly directly exposed installation, lacks special protective device to fit the protection servo driver.

Description

Technical Field

[0001] This utility model relates to the field of driver protection technology, specifically to a protection device for a servo driver. Background Technology

[0002] Servo drives are the core component for controlling servo motors. To meet the high precision requirements of servo motors, they can convert command signals from the control system into precise control signals such as motor current, speed, and position, thereby enabling more complex control logic and higher dynamic performance. They are widely used in industrial automation fields, such as CNC machine tools, robots, printing equipment, and packaging machinery. They have advantages such as fast response speed, high control accuracy, and good stability, and are one of the key components for achieving automation and intelligence in modern industrial production.

[0003] With the development of servo motor products, the design concept of drivers tends to be smaller in size and more complex in interface. The special installation caused by this design concept makes it difficult to guarantee the overall protection of the driver. For drivers that lack protective structure, not only is it easy for dust to accumulate inside, affecting the stability and safety of the driver, but also more electronic components are exposed and easily touched by accident, which can lead to short circuits in the driver and affect its normal operation. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model proposes a protective device for servo drives, which can solve the problem that most servo drives are directly exposed and lack a dedicated protective device to fit and protect the servo drives.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A protective device for a servo drive, externally mounted on the servo drive, the servo drive having a base plate, the protective device comprising:

[0007] Device housing, interface section, power supply section, and threaded guide section;

[0008] The device housing forms a protective cavity to accommodate the servo driver.

[0009] The interface section includes a plurality of clearance holes for connecting interface terminals, and the clearance holes are formed on the outer surface of the device housing;

[0010] The power supply unit includes a clearance opening for connecting a power terminal, the clearance opening being formed on the outer surface of the device housing;

[0011] The threaded guide portion includes a plurality of guide posts disposed on the inner wall of the protective cavity along the height direction. The guide posts are used to guide the base plate to be threadedly connected to the device housing so that the servo driver can be installed in the protective cavity.

[0012] In an optional embodiment, the interface portion is made of an elastic material so that the inner wall of the clearance hole of the interface portion fits tightly against the interface terminal.

[0013] In one specific embodiment, the power supply unit further includes a clearance ramp for providing wiring space for the power supply terminals, the clearance ramp being disposed on the inner wall edge of the clearance opening and extending into the clearance opening.

[0014] In a further embodiment, the clearance ramp includes a first end and a second end, the first end being at the same height as the opening plane of the clearance opening, the second end being lower than the first end, and the second end being used to abut the power terminal.

[0015] In a further embodiment, the edge of the clearance opening is provided with a reserved groove on the opposite side of the clearance slope, the reserved groove being used to form a receiving space for the upper column of the driver.

[0016] In an optional embodiment, the protective device further includes a cutout portion disposed on the inner surface of the device housing and adjacent to the clearance hole to form a clearance area for accommodating electronic components.

[0017] In a further embodiment, the cutout is made of an elastic material so that the top wall of the cutout area is in close contact with the electronic component.

[0018] In one specific embodiment, the guide post has a first threaded opening and a second threaded opening at its two ends, respectively. The first threaded opening is located inside the protective cavity, and the second threaded opening is located on the outer surface of the device housing.

[0019] In a further embodiment, a limiting part is provided on the inner wall of the protective cavity inside the device housing. The limiting part includes a limiting protrusion and a limiting slot. The limiting protrusion is used to limit one end of the servo driver, and the limiting slot is used to limit the opposite end of the one end to cooperate with the limiting protrusion to restrict the servo driver within the protective cavity.

[0020] In an optional embodiment, the interface type of the clearance hole adapter interface terminal includes one or more of the following: communication interface, control signal interface, power input interface, motor output interface, encoder interface, safety function interface, or debugging and maintenance interface.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] This invention provides a protective device for a servo drive. The protective device includes a housing, an interface section, a power supply section, and a threaded guide section. A protective cavity is formed within the housing to accommodate the servo drive. The interface section includes multiple clearance holes for connecting interface terminals, located on the outer surface of the housing. The power supply section includes a clearance opening for connecting power terminals, also located on the outer surface of the housing. The threaded guide section includes multiple guide posts along the height direction on the inner wall of the protective cavity. These guide posts guide the base plate to a threaded connection with the housing, allowing the servo drive to be installed within the protective cavity. The protective cavity formed by the housing protects the servo drive while providing compatible interface and power supply sections for the interface terminals and power supply terminals. This solves the problem that most servo drives are directly exposed and lack dedicated protective devices to fit and protect them, thus achieving professional protection for the servo drive and ensuring its operational stability and safety. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of an exemplary servo driver of this utility model;

[0025] Figure 2 This is a schematic diagram of a protective device for an exemplary servo driver of this utility model;

[0026] Figure 3 for Figure 2 A diagram from another perspective;

[0027] Figure 4 This is a schematic diagram of a servo driver that is an exemplary installation protection device of this utility model;

[0028] Figure 5 for Figure 4 A diagram from another perspective.

[0029] Attached image labels:

[0030] 100 - Device housing; 110 - Protective cavity;

[0031] 200 - Interface section, 210 - Clearance hole;

[0032] 300-Power supply section, 310-Avoidance opening, 320-Avoidance ramp, 321-First end, 322-Second end, 330-Reserved slot;

[0033] 400 - Threaded guide part, 410 - Guide post, 411 - First threaded opening, 412 - Second threaded opening;

[0034] 500 - Hollowed-out section, 510 - Clearance area;

[0035] 600 - Limiting part, 610 - Limiting protrusion, 620 - Limiting slot;

[0036] 700-Servo driver, 710-Base plate, 720-Interface terminal, 730-Power terminal, 740-Electronic component, 750-Column. Detailed Implementation

[0037] Before detailing the specific embodiments of the technical solution of this application, we will first disclose the application scenarios suitable for supporting the implementation of the technical solution of this application.

[0038] The technical solution of this application is applicable to the field of driver protection technology, and is particularly applicable to the scenario of external protection of servo drivers. In this context, the technical solution of this application can be applied to a typical servo driver. It is understood that, in addition to the servo driver provided in the embodiments of this application, the protection device of the servo driver proposed in this application is also applicable to other servo drivers involving protection requirements.

[0039] Please see Figure 1 A servo drive 700 typically consists of a base plate 710, interface terminals 720, power terminals 730, electronic components 740 on the drive surface, and a column 750 connecting multiple drives. It is designed to achieve a smaller size and integrate more interfaces. However, during actual use or installation, the electronic components 740 and interface terminals 720 on the servo drive 700 are exposed, making them susceptible to accidental short circuits. Furthermore, the exposed parts are prone to dust accumulation, affecting the stability and safety of the drive. Therefore, a protective structure to surround the servo drive 700 is urgently needed. Figure 1 As can be seen, due to improvements in size and interface complexity, the servo drive 700 has many uneven structures on its surface that need to be adapted one by one. Therefore, the protective structure should be able to adapt to the shape and size of the servo drive 700. In addition to providing external protection, it also needs to fit tightly against the outer surface of the servo drive 700 to reduce the probability of dust entering the interior of the protective structure and ensure that the servo drive can work stably and normally.

[0040] To address the aforementioned protection issues of servo drives, this application proposes a servo drive protection device, aiming to provide a professional protection device for servo drives to fit and protect them.

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," "third," and "fourth," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] See Figures 1 to 5 This utility model discloses a protective device for a servo driver. The protective device is externally mounted on the servo driver 700, which has a base plate 710. The protective device includes:

[0045] The device housing 100 comprises an interface section 200, a power supply section 300, and a threaded guide section 400. The device housing 100 is an open box, typically designed with a parallelogram cross-section to accommodate the shape of the servo drive. It is understood that the device housing 100 is externally mounted on the servo drive 700 to fit snugly against it. The shape, height, width, and length of the device housing 100 can be designed and adjusted according to the servo drive 700 to provide a space to accommodate it. Notably, the servo drive 700 typically has a base plate 710. Therefore, for the open device housing 100, the base plate 710 of the servo drive 700 acts as a cover for the housing structure, fitting snugly onto the device housing to enclose the device housing 100 and the servo drive 700 as a single unit. This prevents dust from entering the housing from the bottom, thereby improving the operational stability of the servo drive.

[0046] The device housing 100 forms a protective cavity 110 for accommodating the servo driver; wherein the protective cavity 110 is formed by the housing wall of the device housing 100, wherein the housing wall includes a frame wall and a top wall, the frame wall is used to restrict the servo driver in the horizontal direction, and the top wall is used to restrict the servo driver in the vertical direction. It is understood that, in order to improve the secure connection of the protective device to the servo driver 700, the housing wall of the device housing 100 will be in close contact with the outer surface of the servo driver 700.

[0047] The interface section 200 includes multiple clearance holes 210 for accessing interface terminals, which are formed on the outer surface of the device housing 100. The servo driver 700 typically has various types of interface terminals for communication connections. The interface section 200 provides reserved space for the interface terminals 720. While the device housing 100 is in close contact with the servo driver 700, various interface terminals 720 can extend out of the protective cavity 110 from the interface section 200 to further adapt to the design of the servo driver 700, achieving the purpose of fitting and protecting the servo driver 700.

[0048] The power supply unit 300 includes a clearance opening 310 for connecting a power terminal, which is located on the outer surface of the device housing 100. The servo driver 700 is typically equipped with a power terminal 730 for internal power supply. Compared to the electronic components on the driver, the power terminal 730 has greater heat dissipation requirements and therefore needs to be externally mounted for heat dissipation. The power supply unit 300 provided on the device housing 100 to accommodate the power terminal provides an external area for the power terminal 730 of the servo driver 700, allowing the power terminal 730 to extend out of the protective cavity 110 through the clearance opening 310 for heat dissipation.

[0049] The threaded guide portion 400 includes a plurality of guide posts 410 disposed along the height direction on the inner wall of the protective cavity 110. The guide posts 410 are used to guide the base plate to be threadedly connected to the device housing 100 so that the servo driver can be installed in the protective cavity 110. The servo driver 700 is connected to the device housing 100 through the base plate 710. Since the servo driver 700 has a certain height, in the actual installation process, the threaded fasteners used for the threaded connection between the base plate 710 and the device housing 100, such as screws, have a certain length. If the perpendicularity of the screw cannot be maintained during the installation process, the threads on the screw may not be aligned and may fail. This will affect the stability of the connection between the servo driver 700 and the device housing 100. Therefore, the threaded guide portion 400 is provided in the protective cavity 110 of the device housing 100 along the height direction of the cavity wall. During the installation process, the guide posts 410 have the function of calibrating the perpendicularity of the screw, thereby guiding the screw to be installed correctly and ensuring the structural stability of the device housing 100 and the servo driver 700.

[0050] In an optional embodiment, the interface portion 200 is made of an elastic material so that the inner wall of the clearance hole 210 of the interface portion 200 is tightly attached to the interface terminal. It is understood that the elastic material gives the interface portion 200 a certain deformation capability. On one hand, the interface portion 200 of the elastic material can fit the surface of the interface terminal 720 more closely, thereby preventing dust from entering the protective cavity 110. On the other hand, the interface portion 200 of the elastic material has a softer characteristic. When the protective device is actually installed on the servo drive 700, the interface portion 200 of the elastic material can reduce the scratching of the interface terminal 720, thereby reducing the damage to the interface terminal 720 during the installation process and improving the safety of the servo drive. Those skilled in the art will understand that the elastic material used in the interface portion 200 in this optional embodiment includes, but is not limited to, natural rubber, synthetic rubber, thermoplastic elastomer, polyurethane elastomer, silicone materials, fiber materials, 3D printing materials or composite materials. It can be adjusted according to the actual cost and elastic strength requirements, and is not limited in this application.

[0051] In one specific embodiment, the power supply unit 300 further includes a clearance ramp 320 for providing wiring space for the power terminals. The clearance ramp 320 is disposed on the inner wall edge of the clearance opening 310 and extends into the clearance opening 310. The power terminals 730 of the servo driver 700 are externally located on the device housing 100. Typically, the power terminals 730 also require an external power supply. Figure 4As shown, the power terminal 730 requires the use of its side circular hole (not shown in the figure) when connected to an external power source. In order to adapt to the compact structure of the servo driver 700, the upper surface of the device housing 100 is at the same level as the circular hole. Therefore, a clearance slope 320 is provided at the clearance opening 310 to provide wiring space for the power terminal 730. At the same time, the recessed and extended clearance slope 320 can also prevent dust from entering the protective cavity 110. This not only solves the protection problem, but also provides a clearance space design to adapt to the compact size of the servo driver.

[0052] In a further embodiment, the clearance ramp 320 includes a first end 321 and a second end 322. The first end 321 is at the same height as the opening plane of the clearance opening 310, and the second end 322 is lower than the first end 321. The second end 322 is used to abut the power terminal. The second end 322 abuts the power terminal 730 and is located below the circular hole (not shown in the figure) for the external power supply of the power terminal 730. It will not block the external power supply line of the power terminal 730, and at the same time, it can further seal the clearance opening 310 to prevent dust from falling into the protective cavity 110 and improve the overall protection of the device housing 100 for the servo driver 700.

[0053] In a more detailed embodiment, the edge of the clearance opening 310 is provided with a reserved slot 330 on the opposite side of the clearance slope 320. The reserved slot 330 is used to form a receiving space for the column on the driver. The servo driver 700 is composed of multiple layers of boards connected by columns 750. Therefore, a certain receiving space needs to be reserved for the columns 750 to adapt to the design of the servo driver 700.

[0054] In an optional embodiment, the protective device further includes a cutout portion 500, which is disposed on the inner surface of the device housing 100 and adjacent to the clearance hole 210 to form a clearance area 510 for accommodating electronic components. In addition to the upwardly extending interface terminal 720, the surface of the servo driver 700 is also provided with various electronic components 740, such as resistors and capacitors. Therefore, in addition to the clearance hole 210 opened on the outer surface of the device housing 100, a corresponding cutout portion 500 can also be provided on the inner surface of the device housing 100 (i.e., the other side of the outer surface on the top wall). The cutout portion 500 forms a clearance area 510 for protecting electronic components in the protective cavity 110, further improving the protection of the servo driver 700.

[0055] In a further embodiment, the cutout portion 500 is made of an elastic material so that the top wall of the clearance area 510 is in close contact with the electronic component. It is understood that both the cutout portion 500 and the interface portion 200 can be designed to be made of an elastic material, which not only allows the cutout portion 500 to fit the electronic component 740, but also prevents the electronic component 740 from directly contacting the cutout portion 500 and causing damage, further improving the protection of the device housing 100 for the servo driver 700. In this optional embodiment, the elastic material used for the cutout portion 500 includes, but is not limited to, natural rubber, synthetic rubber, thermoplastic elastomer, polyurethane elastomer, silicone materials, fiber materials, 3D printing materials, or composite materials. It can be adjusted according to the actual cost and elastic strength requirements, and is not limited in this application.

[0056] In one specific embodiment, the guide post 410 has a first threaded opening 411 and a second threaded opening 412 at its two ends. The first threaded opening 411 is located inside the protective cavity 110, and the second threaded opening 412 is located on the outer surface of the device housing 100. In actual installation, both the first threaded opening 411 and the second threaded opening 412 can serve as the entry end of the threaded connector. Taking the first threaded opening 411 as the entry end as an example, the second threaded opening 412 is located on the outer surface of the device housing 100, which allows for easy observation of the threaded connection and its completion, ensuring that the protective device is correctly installed on the servo driver 700.

[0057] In a further embodiment, a limiting part 600 is provided on the inner wall of the protective cavity 110 within the device housing 100. The limiting part 600 includes a limiting protrusion 610 and a limiting slot 620. The limiting protrusion 610 is used to limit one end of the servo driver, and the limiting slot 620 is used to limit the opposite end of the one end to cooperate with the limiting protrusion 610 in confining the servo driver within the protective cavity 110. The limiting protrusion 610 can position and limit the servo driver body, not only confirming that the servo driver 700 is in place, but also limiting the servo driver 700 from shaking within the protective cavity 110, reducing the possibility of the servo driver 700 hitting the inner wall of the device housing 100 due to an overly tight connection. The limiting slot 620 can further lock the other end of the servo driver 700 body, improving the limiting degree of the limiting part 600 on the servo driver 700 and increasing the safety of the protective device.

[0058] In an optional embodiment, the interface type of the adapter interface terminal of the clearance hole 210 includes one or more of the following: communication interface, control signal interface, power input interface, motor output interface, encoder interface, safety function interface, or debugging and maintenance interface. It will be understood by those skilled in the art that the clearance hole 210 can also be adjusted in size and shape according to the shape of different interface terminals, so that the protective device can be fully adapted to the corresponding servo driver 700, thereby achieving professional protection for the servo driver and ensuring the working stability and safety of the servo driver.

[0059] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A protective device for a servo drive, the protective device being externally mounted on the servo drive, the servo drive having a base plate, characterized in that, The protective device includes: The device housing (100), interface section (200), power supply section (300), and threaded guide section (400). A protective cavity (110) for accommodating the servo driver is formed inside the device housing (100). The interface section (200) includes a plurality of clearance holes (210) for accessing interface terminals, the clearance holes (210) being formed on the outer surface of the device housing (100); The power supply unit (300) includes a clearance opening (310) for connecting a power terminal, the clearance opening (310) being formed on the outer surface of the device housing (100); The threaded guide portion (400) includes a plurality of guide posts (410) disposed on the inner wall of the protective cavity (110) along the height direction. The guide posts (410) are used to guide the base plate to be threadedly connected to the device housing (100) so that the servo driver can be installed in the protective cavity (110).

2. The protection device for the servo driver according to claim 1, characterized in that, The interface portion (200) is made of an elastic material so that the inner wall of the clearance hole (210) of the interface portion (200) is in close contact with the interface terminal.

3. The protection device for the servo driver according to claim 1, characterized in that, The power supply unit (300) also includes a clearance ramp (320) for providing wiring space for the power supply terminals, the clearance ramp (320) being disposed at the inner wall edge of the clearance opening (310) and extending into the clearance opening (310).

4. The protection device for the servo driver according to claim 3, characterized in that, The clearance ramp (320) includes a first end (321) and a second end (322), the first end (321) being at the same height as the opening plane of the clearance opening (310), the second end (322) being lower than the first end (321), and the second end (322) being used to abut the power terminal.

5. The protection device for the servo driver according to claim 3, characterized in that, The edge of the clearance opening (310) is provided with a reserved groove (330) on the opposite side of the clearance slope (320), and the reserved groove (330) is used to form a receiving space for the upper column of the driver.

6. The protection device for the servo driver according to claim 1, characterized in that, The protective device also includes a cutout (500), which is disposed on the inner surface of the device housing (100) and adjacent to the clearance hole (210) to form a clearance area (510) for accommodating electronic components.

7. The protection device for the servo driver according to claim 6, characterized in that, The cutout portion (500) is made of an elastic material so that the top wall of the clearance area (510) is in close contact with the electronic component.

8. The protection device for the servo driver according to claim 1, characterized in that, The guide post (410) has a first threaded opening (411) and a second threaded opening (412) at its two ends respectively. The first threaded opening (411) is located inside the protective cavity (110), and the second threaded opening (412) is located on the outer surface of the device housing (100).

9. The protection device for the servo driver according to claim 1, characterized in that, The device housing (100) has a limiting part (600) on the inner wall of the protective cavity (110). The limiting part (600) includes a limiting protrusion (610) and a limiting slot (620). The limiting protrusion (610) is used to limit one end of the servo driver, and the limiting slot (620) is used to limit the opposite end of the one end so as to cooperate with the limiting protrusion (610) to restrict the servo driver within the protective cavity (110).

10. The protection device for the servo driver according to claim 1, characterized in that, The interface type of the adapter interface terminal of the clearance hole (210) includes one or more of the following: communication interface, control signal interface, power input interface, motor output interface, encoder interface, safety function interface or debugging and maintenance interface.

Images