Servo driver

Abstract

A servo driver comprises a supporting frame, a control panel and a first circuit board. The first circuit board is arranged opposite to the end part of the support frame in the first direction; the first circuit board is provided with a first end and a second end which are opposite along a second direction, the first end is fixedly connected with the control panel, and the second end extends along the second direction towards a direction far away from the first end; the end, close to the first circuit board, of the supporting frame is provided with a supporting piece, and the gap between the supporting piece and the first circuit board is smaller than or equal to a preset value. The first direction intersects the second direction. The first end of the first circuit board is fixedly connected with the control panel, and the second end of the first circuit board is supported by the supporting piece arranged on the supporting frame, so that the supporting piece can prevent the first circuit board from being excessively deformed when the first circuit board is pressed, the possibility of deformation and damage of the first circuit board is reduced, and the service life of the servo driver is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of drive control, and particularly relates to a servo driver. Background Art

[0002] A servo driver, also known as a "servo amplifier" or "servo controller", is a controller used to control a servo motor and is part of a servo system. Generally, it controls the servo motor in three ways: position, speed, and torque to achieve high-precision positioning of the transmission system, and it is a high-end product of transmission technology. To facilitate users to debug the parameters of the servo driver, a human-machine interaction module is usually set on the servo driver. The human-machine interaction module specifically includes a circuit board and buttons arranged on the circuit board. One end of the circuit board is usually fixedly connected to the control board, and the other end is in a suspended state. When the user frequently debugs the servo driver through the buttons multiple times, or when the pressing force on the debugging button is relatively large during a single debugging, it is easy to cause the circuit board of the human-machine interaction module to be deformed due to pressing, and then cause damage to the circuit board, thereby causing damage to the human-machine interaction module, increasing the maintenance rate and usage cost of the servo driver. Summary of the Utility Model

[0003] The main technical problem to be solved by the utility model is that the human-machine interaction module of the servo driver in the related art is easily damaged, resulting in high maintenance rate and usage cost of the servo driver.

[0004] According to a first aspect, in one embodiment, a servo driver is provided, including:

[0005] A support frame for providing an installation position for at least one component in the servo driver;

[0006] A control board disposed on one side of the support frame and fixedly connected to the support frame;

[0007] A first circuit board oppositely disposed at an end of the support frame in a first direction; the first circuit board has a first end and a second end opposite to each other in a second direction, the first end is fixedly connected to the control board, and the second end extends in a direction away from the first end along the second direction; a support member is disposed at an end of the support frame close to the first circuit board, and the gap between the support member and the first circuit board is less than or equal to a preset value; the first direction intersects with the second direction.

[0008] In one embodiment, the support member includes a support cantilever extending from an end of the support frame close to the first circuit board along the second direction towards the second end.

[0009] In one embodiment, the support cantilever is disposed opposite to the middle region of the first circuit board.

[0010] In one embodiment, the support cantilever includes a first cantilever extending in the third direction and a second cantilever extending in the second direction. The first cantilever and the second cantilever are fixedly connected; the third direction intersects with the second direction.

[0011] In one embodiment, the second end is directly fixedly connected to the support member.

[0012] In one embodiment, the support member and the support frame are integrally formed.

[0013] In one embodiment, a key assembly and a display assembly are further fixedly disposed on the first circuit board. The key assembly and the display assembly are disposed on the surface of the first circuit board away from the support frame and are electrically connected to the first circuit board.

[0014] In one embodiment, the servo driver further includes a housing assembly. The housing assembly is disposed to cover the control board and is fixedly connected to the support frame; a plurality of assembly through holes are provided on the housing assembly for exposing the interfaces of the components disposed inside the housing assembly.

[0015] In one embodiment, a plurality of limiting protrusions are provided at the connection between the support frame and the housing assembly. The housing assembly is correspondingly provided with limiting grooves, and the limiting protrusions and the limiting grooves are engaged with each other.

[0016] In one embodiment, the servo driver further includes a heat dissipation base. The heat dissipation base includes a bottom plate, a connection frame and a heat dissipation module which are fixedly connected; the heat dissipation module is fixedly disposed on the connection frame; the support frame is formed on the connection frame.

[0017] According to the servo driver of the above embodiment, since the first end of the first circuit board is fixedly connected to the control board and the second end is supported by the support member provided on the support frame, the support member can prevent the first circuit board from being excessively deformed when the first circuit board is pressed, thereby reducing the possibility of deformation and damage of the first circuit board and prolonging the service life of the servo driver. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the servo driver in the embodiment of the present application.

[0019] Figure 2 It is a schematic structural diagram of the servo driver in the embodiment of the present application after removing the housing assembly.

[0020] Figure 3Schematic diagram of the first circuit board structure in the embodiment of the present application.

[0021] Figure 4 Schematic diagram of the heat dissipation base structure with a support frame in the embodiment of the present application.

[0022] Figure 5 is Figure 4 Enlarged schematic diagram of the partial area A in

[0023] Figure 6 Explosion schematic diagram of the servo driver in the embodiment of the present application.

[0024] Explanation of the reference numerals in the drawings:

[0025] 1 - Support frame; 11 - Support member; 12 - Support cantilever; 13 - First cantilever; 14 - Second cantilever; 15 - Limit protrusion;

[0026] 2 - Control board;

[0027] 3 - First circuit board; 31 - First end; 32 - Second end; 33 - Button assembly; 34 - Display assembly;

[0028] 4 - Housing assembly; 41 - Assembly through hole; 42 - Limit groove;

[0029] 5 - Heat dissipation base; 51 - Bottom plate; 52 - Connecting frame; 53 - Heat dissipation module. Detailed implementation manners

[0030] The present utility model will be further described in detail below in conjunction with the accompanying drawings through specific implementation manners. Similar elements in different implementation manners are labeled with related similar reference numerals. In the following implementation manners, many detailed descriptions are provided to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification, which is to avoid the core part of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the descriptions in the specification and the general technical knowledge in the field.

[0031] In addition, the features, operations, or characteristics described in the specification can be combined in any appropriate manner to form various implementation manners. At the same time, the steps or actions in the method description can also be reordered or adjusted in an obvious manner by those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for clearly describing a certain embodiment and do not mean that they are the necessary sequences, unless it is stated that a certain sequence must be followed.

[0032] The serial numbers assigned to the components in this text itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. And the "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connection (coupling).

[0033] An embodiment of the present application provides a servo driver. Please refer to Figures 1-3 which includes:

[0034] A support frame 1, which is used to provide an installation position for at least one component in the servo driver;

[0035] A control board 2, which is arranged on one side of the support frame 1 and fixedly connected to the support frame 1;

[0036] A first circuit board 3, which is arranged opposite to the end of the support frame 1 in a first direction; the first circuit board 3 has a first end 31 and a second end 32 opposite to each other in a second direction. The first end 31 is fixedly connected to the control board 2, and the second end 32 extends in a direction away from the first end 31 along the second direction; a support member 11 is arranged at the end of the support frame 1 close to the first circuit board 3, and the gap between the support member 11 and the first circuit board 3 is less than or equal to a preset value; the first direction intersects with the second direction.

[0037] The servo driver in the embodiment of the present application is a controller for controlling a servo motor and belongs to a part of the servo system. Its function is similar to that of a frequency converter acting on an ordinary AC motor and is mainly applied to high-precision positioning systems. Generally, the servo motor is controlled in three ways: position, speed, and torque to achieve high-precision positioning of the transmission system, which is a high-end product of transmission technology. The servo driver is an important part of modern motion control and is widely used in automation equipment such as industrial robots and CNC machining centers. In particular, the servo driver for controlling AC permanent magnet synchronous motors has become a research hotspot at home and abroad. Most mainstream servo drivers use a digital signal processor (DSP) as the control core, which can implement relatively complex control algorithms to achieve digitalization, networking, and intelligence. The power devices generally adopt a drive circuit designed with an intelligent power module (IPM) as the core. The IPM integrates a drive circuit internally and also has fault detection and protection circuits such as overvoltage, overcurrent, overheat, and undervoltage. A soft start circuit is also added to the main circuit to reduce the impact on the driver during the start-up process.

[0038] In the embodiment of the present application, the servo driver has a support frame 1, which runs through the servo driver and can provide an installation position for the components in the servo driver. That is to say, various components in the servo driver can be fixedly arranged in the servo driver by connecting with the support frame 1. The connection mode between the servo driver and each component can be a direct connection or an indirect connection based on other connecting parts. In other words, in the embodiment of the present application, the support frame 1 is equivalent to the skeleton in the servo driver; to ensure its strength, the support frame 1 can be made of metal materials or high-strength plastics.

[0039] The control board 2 is arranged on one side of the support frame 1, and a fixed connection is formed between the control board 2 and the support frame 1. According to the distance between the control board 2 and the support frame 1, the control board 2 can form a direct fixed connection or an indirect fixed connection with the support frame 1; for example, when the distance between the control board 2 and the support frame 1 is small, the control board 2 can be directly fixedly connected to the support frame 1; when the distance between the control board 2 and the support frame 1 is large, a connecting part can be set to respectively form a fixed connection with the control board 2 and the support frame 1, so as to form a fixed connection between the control board 2 and the support frame 1.

[0040] Circuits required for configuring the operation of the servo driver can be set on the control board 2 and electrically connected to corresponding electronic components. In addition, there can be one or more control boards 2, and each control board 2 can be arranged in parallel on the same side of the support frame 1 or, with the support frame 1 as the separator, be respectively arranged on both sides of the support frame 1.

[0041] In the embodiments of the present application, in order to provide a human-computer interaction means, a first circuit board 3 is further included. The first circuit board 3 is disposed opposite to the support frame 1 along a first direction, that is, the first circuit board 3 is not disposed on the support frame 1. The first circuit board 3 has a first end 31 and a second end 32 opposite to each other along a second direction. The first end 31 is directly fixedly connected to the control board 2, and the first circuit board 3 is also electrically connected through the control board 2. In this state, the second end 32 of the first circuit board 3 is suspended. In order to prevent the first circuit board 3 from being deformed due to the touch operation of the button, the support frame 1 is provided with a support member 11 at the end corresponding to the first circuit board 3. There is a gap less than or equal to a preset value between the support member 11 and the first circuit board 3. Therefore, when the first circuit board 3 is stressed and pressed, the deformation range will be reduced due to the abutment of the support member 11, thereby reducing the possibility of damage to the first circuit board 3 due to deformation. Among them, the minimum value of the gap between the support member 11 and the first circuit board 3 is 0, that is, the support member 11 can directly abut against the first circuit board 3. This structure can not only protect the first circuit board 3, but also reduce the assembly difficulty of the first circuit board 3. The first circuit board 3 only needs to fixedly connect the first end 31 to the control board 2. Among them, the first direction and the second direction intersect, referring to the connection direction between the support frame 1 and the first circuit board 3, which is staggered rather than in the same direction as the connection direction between the first end 31 and the second end 32. Among them, the first direction and the second direction are perpendicular to each other.

[0042] In some alternative embodiments, please refer to Figure 4 , in order to improve the support effect of the support member 11 on the first circuit board 3, the support member 11 specifically includes a support cantilever 12. The support cantilever 12 extends from the end of the support frame 1 close to the first circuit board 3 along the second direction towards the second end 32. By providing the support cantilever 12 and the support cantilever 12 extending towards the second end 32, the support surface between the support cantilever 12 and the first circuit board 3 can be significantly improved, thereby improving the support strength of the support cantilever 12 on the first circuit board 3. In addition, the surface area of the support cantilever 12 facing the first circuit board 3 can be appropriately increased to increase the contact area when the support cantilever 12 abuts against the first circuit board 3, so as to reduce the pressure.

[0043] In some alternative embodiments, in order to further improve the support effect of the support cantilever 12 on the first circuit board 3 and prevent the first circuit board 3 from being skewed and deflected, the position of the support cantilever 12 can be directly opposite to the middle area of the first circuit board 3. Among them, the middle area refers to the area of the first circuit board 3 close to its center line. By arranging the support cantilever 12 in the center line area of the first circuit board 3, the first circuit board 3 can be prevented from flipping under stress, thereby improving the anti-bending strength of the first circuit board 3.

[0044] In some alternative embodiments, please refer toFigure 5 In order to support the first circuit board 3 from multiple angles, the support cantilever 12 may specifically include a first cantilever 13 extending in the third direction and a second cantilever 14 extending in the second direction. The first cantilever 13 and the second cantilever 14 are fixedly connected, and the third direction intersects with the second direction. Among them, since the support cantilever 12 includes the first cantilever 13 and the second cantilever 14 extending in two directions, the first cantilever 13 and the second cantilever 14 can respectively prevent the first circuit board 3 from flipping along the second direction and the first direction, thereby further improving the anti-bending strength of the first circuit board 3. Moreover, in the structure where the first cantilever 13 and the second cantilever 14 are provided, the first cantilever 13 and the second cantilever 14 objectively increase the contact area between the support cantilever 12 and the support frame 1, thereby improving the support strength of the support cantilever 12 for the first circuit board 3.

[0045] In some alternative embodiments, the second end 32 may also be directly fixedly connected to the support member 11. When the second end 32 is directly fixedly connected to the support member 11, the installation strength of the first circuit board 3 reaches the maximum, and the bending deformation of the first circuit board 3 can be avoided to the greatest extent.

[0046] In some alternative embodiments, in order to improve the support effect of the support member 11 on the first circuit board 3, the support member 11 and the support frame 1 are integrally formed structures. Since the support member 11 and the support frame 1 are integrally formed structures, the strength of the fixed connection formed between the support member 11 and the support frame 1 is high and not easily damaged, which can prevent the position of the support member 11 from shifting and affecting the support effect on the first circuit board 3. According to the different materials and processes of the support frame 1, the integrally formed structures between the support member 11 and the support frame 1 are also different. For example, the support member 11 and the support frame 1 can be integrally formed by injection molding process, and can also be integrally formed by casting process. The specific manufacturing process is not limited in the embodiments of the present application.

[0047] In some alternative embodiments, please refer to Figure 3 In order to achieve human-computer interaction, a key component 33 and a display component 34 are also fixedly arranged on the first circuit board 3. The key component 33 and the display component 34 are arranged on the surface of the first circuit board 3 away from the support frame 1 and are electrically connected to the first circuit board 3. Among them, the key component 33 is used to receive the touch operation of the operator to realize the control and adjustment of the operation parameters of the servo driver; the display component 34 is used to display the operation status information of the servo driver. The key component 33 is arranged on the surface of the first circuit board 3 away from the support frame 1. Therefore, when the operator operates the key component 33, the pressure applied to the first circuit board 3 is directed towards the support frame 1, and the support member 11 supports the first circuit board 3, thereby preventing the first circuit board 3 from being excessively bent.

[0048] In some alternative embodiments, please refer to Figure 6 , to ensure the integrity of the overall structure of the servo drive and protect the components inside the servo drive, the servo drive may further include a housing assembly 4, which is wrapped around the control board 2 and fixedly connected to the support frame 1; a plurality of assembly through holes 41 are provided on the housing assembly 4, and the assembly through holes 41 are used for the interfaces of the components arranged inside the housing assembly 4 to be exposed. That is to say, the housing assembly 4 can be fixed based on the support frame 1. The housing assembly 4 can include one or more components. When the housing assembly 4 includes multiple components, one or more of these components can form a fixed connection with the support frame 1, that is, directly form a fixed connection with the support frame 1; the other parts can form a fixed connection with the parts fixed to the support frame 1, that is, indirectly form a fixed connection with the support frame 1.

[0049] On the premise of providing the housing assembly 4, for some components inside the servo drive, including but not limited to interface components, they need to expose their interfaces outside the housing assembly 4 in an exposed manner so that other devices or cables can be connected to the interfaces; therefore, a plurality of assembly through holes 41 can be provided on the housing assembly 4, and these assembly through holes 41 can expose the interfaces on the surface of the housing assembly 4 for other devices or cables to connect. In addition, in addition to interface components, the assembly through holes 41 can also be used for the exposure of components such as the button assembly 33 and the display assembly 34.

[0050] In some alternative embodiments, to fix the connection between the support frame and the housing assembly 4, prevent the support frame 1 and the housing assembly 4 from being misaligned with each other, and for anti-fooling design, a plurality of limiting protrusions 15 are provided at the connection between the support frame 1 and the housing assembly 4, and corresponding limiting grooves 42 are provided on the housing assembly 4, and the limiting protrusions 15 and the limiting grooves 42 are engaged with each other. On the premise of providing the limiting protrusions 15 and the limiting grooves 42 at the corresponding positions of the support frame 1 and the housing assembly 4, only when the support frame 1 and the housing assembly 4 are installed in place can the fixed connection between the support frame 1 and the housing assembly 4 be achieved to realize anti-fooling; moreover, the engagement between the limiting protrusions 15 and the limiting grooves 42 can also prevent the support frame 1 and the housing assembly 4 from being misaligned with each other, thereby enhancing the connection strength between the support frame 1 and the housing assembly 4.

[0051] In some alternative embodiments, please refer to Figure 4, the servo driver further includes a heat dissipation base 5, and the heat dissipation base 5 includes a bottom plate 51, a connecting frame 52 and a heat dissipation module 53 which are fixedly connected; the heat dissipation module 53 is fixedly arranged on the connecting frame 52; the support frame 1 is formed on the connecting frame 52. In other words, the support frame 1 in the embodiment of the present application can be used as a part of the heat dissipation base 5. The composition structure of the heat dissipation base 5 includes a bottom plate 51 and a connecting frame 52 fixed to the bottom plate 51, wherein the connecting frame 52 can be directly integrally formed with the bottom plate 51, thereby improving its connection strength. The heat dissipation module 53 can be heat dissipation fins, a heat dissipation fan, etc. Among them, the heat dissipation fins can be selectively integrally formed with the connecting frame 52, and the heat dissipation fan is fixedly connected to the connecting frame 52. Correspondingly, heat dissipation holes corresponding to the heat dissipation fins can also be provided on the housing assembly 4, and the hot air generated during the operation of the heat dissipation module 53 can be discharged from the heat dissipation holes.

[0052] According to the servo driver provided in the embodiment of the present application, since the first end 31 of the first circuit board 3 is fixedly connected to the control board 2, and the second end 32 is supported by the support member 11 provided on the support frame 1, when pressing on the first circuit board 3, the support member 11 can prevent the first circuit board 3 from being excessively deformed, thereby reducing the possibility of deformation and damage of the first circuit board 3 and prolonging the service life of the servo driver.

[0053] The above uses specific examples to elaborate on the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the technical field to which the present invention belongs, according to the idea of the present invention, several simple deductions, deformations or replacements can also be made.

Claims

1. A servo driver, characterized in that, Comprising: A support frame for providing an installation position for at least one component in the servo driver. A control board disposed on one side of the support frame and fixedly connected to the support frame. A first circuit board oppositely disposed at the end of the support frame in a first direction; the first circuit board has a first end and a second end opposite to each other in a second direction, the first end is fixedly connected to the control board, and the second end extends in the second direction away from the first end; a support member is provided at the end of the support frame close to the first circuit board, and the gap between the support member and the first circuit board is less than or equal to a preset value; the first direction intersects with the second direction.

2. The servo driver according to claim 1, wherein The support member includes a support cantilever extending from the end of the support frame close to the first circuit board in the second direction towards the second end.

3. The servo driver according to claim 2, wherein The installation position of the support cantilever is opposite to the middle area of the first circuit board.

4. The servo driver according to claim 2, characterized in that, The support cantilever includes a first cantilever extending in a third direction and a second cantilever extending in the second direction, and the first cantilever and the second cantilever are fixedly connected; the third direction intersects with the second direction.

5. The servo driver according to claim 1, characterized in that, The second end is directly fixedly connected to the support member.

6. The servo driver according to claim 1, wherein, The support member and the support frame are of an integrally formed structure.

7. The servo driver according to any one of claims 1-6, characterized in that, A key assembly and a display assembly are also fixedly provided on the first circuit board, and the key assembly and the display assembly are disposed on the surface of the first circuit board away from the support frame and are electrically connected to the first circuit board.

8. The servo driver according to any one of claims 1-6, characterized in that, The servo driver further includes a housing assembly covering the control board and fixedly connected to the support frame; a plurality of assembly through holes are provided on the housing assembly for exposing the interfaces of the components disposed inside the housing assembly.

9. The servo driver according to claim 8, wherein, A plurality of limiting protrusions are provided at the connection between the support frame and the housing assembly, and corresponding limiting grooves are provided on the housing assembly, and the limiting protrusions and the limiting grooves are engaged with each other.

10. The servo driver according to any one of claims 1-6, characterized in that, The servo driver further includes a heat dissipation base, and the heat dissipation base includes a bottom plate, a connection frame and a heat dissipation module fixedly connected; the heat dissipation module is fixedly provided on the connection frame; the support frame is formed on the connection frame.

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