CN211880746U - Stepping motor driver and automation equipment - Google Patents

Abstract

The utility model discloses a stepping motor driver and automation equipment, which arranges a heat radiation fan (4) at the back of a heat radiation mainboard (20) of the stepping motor driver instead of in a shell (1), and the heat radiation fan (4) is positioned outside the motor driver, so the structure is simpler, the cost is lower, the use of components on an internal circuit board can not be interfered, and the reliability of the motor driver is improved; in addition, an interface unit arranged on the stepping motor driver circuit board is exposed to the outside through a hollow hole on the shell (1), and the interface unit comprises a first interface unit and a second interface unit which are distributed on two adjacent sides of the circuit board; the interface units are respectively arranged on two adjacent sides, so that the stepper motor driver is more convenient to use and wire, and the user experience satisfaction is improved.

Description

Stepping motor driver and automation equipment

Technical Field

The utility model relates to a motor driver technical field, more specifically say, relate to a step motor driver and automation equipment.

Background

The structural design of the stepping motor driver is strongly related to the overall heat dissipation effect of the driver product. The inside device of step motor driver produces a large amount of heats easily at the operation in-process, if the heat can't in time be effluvium, thereby can lead to the high temperature of the inside device of step motor driver to appear damaging, the unable normal work of step motor driver, the emergence of phenomenon such as greatly reduced when using. In view of this problem, a solution proposed at present is to provide a heat radiation fan for radiating heat in a housing of a motor driver. But set up radiator fan in the casing, there is the structure complicacy, with high costs and easily cause the interference scheduling problem to the work of components and parts on the circuit board in the casing. In addition, another key factor of the structural design of the stepping motor driver is how to reasonably arrange various interface units so as to facilitate the use and wiring convenience of the stepping motor driver.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a step motor driver and automation equipment solves and how to set up radiator fan and interface unit to promote motor driver's radiating effect and convenience and the reliability of use, reduce cost simultaneously.

In order to solve the above problem, an embodiment of the present invention provides a step motor driver, the step motor driver includes: the heat dissipation device comprises a shell 1, a heat dissipation frame 2 matched with the shell 1 to form a closed space, a circuit board arranged in the closed space and a heat dissipation fan 4;

the heat dissipation frame 2 is made of heat dissipation materials and comprises a heat dissipation main board 20, a plurality of heat dissipation fins 21 are arranged on the back surface of the heat dissipation main board 20, and a heat dissipation air channel is formed by gaps between every two adjacent heat dissipation fins 21; the heat dissipation fan 4 is fixed at an area outside the housing 1 corresponding to the heat dissipation fins 21, and the heat dissipated from the heat dissipation main board 20 and the heat dissipation fins 21 along the heat dissipation air duct is dissipated by the airflow generated by the heat dissipation fan;

the circuit board is provided with an interface unit which is exposed outside through a hollow hole on the shell 1; the interface unit comprises a first interface unit and a second interface unit which are respectively positioned at two adjacent sides of the circuit board.

Optionally, the heat dissipation fins 21 enclose a mounting cavity 211 for mounting the heat dissipation fan 4 on the back surface of the heat dissipation main board 20, and the back surface of the heat dissipation main board 20 forms a bottom surface of the mounting cavity 211; the heat dissipation fan 4 is installed in the installation cavity 211, and an air outlet surface of the heat dissipation fan 4 is opposite to the back surface of the heat dissipation main board 20; the heat dissipation fins 21 are distributed over the back surface of the heat dissipation motherboard 20, or are distributed only in a local area on the back surface of the heat dissipation motherboard 20;

or the like, or, alternatively,

the heat dissipation fan 4 is fixed on the heat dissipation fins 21 through a support frame, and an air outlet surface of the heat dissipation fan 4 is opposite to the heat dissipation fins 21;

or the like, or, alternatively,

the heat dissipation fan 4 is fixed at the end of the heat dissipation air duct formed by the dry heat dissipation fins 21 through a fixing frame, and the air outlet surface of the heat dissipation fan 4 is opposite to the end of the heat dissipation air duct.

Optionally, the heat dissipation main board 20 and the heat dissipation fins 21 are made of a metal material and are integrally formed, and the heat dissipation fins 21 are arranged on the back surface of the heat dissipation main board 20 in parallel.

Optionally, the mounting cavity 211 is located in a middle region of the back surface of the heat dissipating main board 20.

Optionally, the bottom surface of the mounting cavity 211 is provided with lead holes penetrating through the front and back surfaces of the heat dissipation motherboard, and the wires of the heat dissipation fan 4 penetrate into the enclosed space through the lead holes and are connected to corresponding fan control interfaces on the circuit board.

Optionally, the stepping motor driver further includes a heat conducting member disposed between the circuit board and the front surface of the heat dissipation main board 20, and configured to transfer heat generated by the heat generating element on the circuit board to the heat dissipation main board 20.

Optionally, the heat dissipation fan 4 includes a fan main body 42, and a fan bracket 41 for carrying and fixing the fan main body 42, wherein the fan main body 42 is fixed in the installation cavity 211 through the fan bracket 41.

Optionally, the height of the heat dissipation fan 4 is not greater than the height of the mounting cavity 211.

Optionally, the first interface unit includes at least one of a debugging interface, an I/O interface, an encoder interface, and a motor winding interface, and the second interface unit includes a communication interface;

or the like, or, alternatively,

the first interface unit comprises at least one of an I/O interface and a motor winding interface, and the second interface unit comprises a debugging interface.

Optionally, a display unit is further disposed on one side of the circuit board on which the first interface unit is disposed, and at least one of a dial switch, a reset switch and an alarm indication interface is further disposed on one side of the circuit board on which the second interface unit is disposed.

In order to solve the above problem, the embodiment of the utility model provides an automation equipment is still provided, automation equipment include as above step motor driver, and with the motor that step motor driver connects, step motor driver is used for control the motor.

The embodiment of the utility model provides a beneficial effect is:

the embodiment of the utility model provides a step motor driver and automation equipment, on one hand, the step motor driver includes casing 1, cooperates with casing 1 to form the heat dissipation frame 2 of enclosure space, sets up the circuit board in the enclosure space, still includes radiator fan 4; the heat dissipation frame 2 is made of a heat dissipation material and comprises a heat dissipation main board 20 and a plurality of heat dissipation fins 21 arranged on the back surface of the heat dissipation main board 20, wherein a heat dissipation air channel is formed by gaps between every two adjacent heat dissipation fins 21; the heat dissipation fan 4 is fixed in the area corresponding to the heat dissipation fins 21 outside the housing, and the heat absorbed by the heat dissipation main board 20 and the heat dissipation fins 21 from the circuit board is dissipated along the heat dissipation air channel by the airflow formed by the heat dissipation fan; in the embodiment, the heat dissipation fan 4 is arranged on the back surface of the heat dissipation main board 20 instead of in the housing, and the heat dissipation fan 4 is positioned outside the motor driver, so that the arrangement structure is simpler, the cost is lower, the use of components on an internal circuit board cannot be interfered, and the reliability of the motor driver is improved;

in addition, in the embodiment, the interface unit disposed on the circuit board is exposed to the outside through the hollow hole on the housing 1, and the interface unit includes a first interface unit and a second interface unit distributed on two adjacent sides of the circuit board; the interface units are respectively arranged on two adjacent sides, so that the stepper motor driver is more convenient to use and wire, and the user experience satisfaction is improved.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a front view of a stepping motor driver according to a first embodiment;

fig. 2 is a right side view of a stepping motor driver according to a first embodiment;

fig. 3 is a first perspective view of a stepping motor driver according to a first embodiment;

fig. 4 is a second perspective view of a stepping motor driver according to a first embodiment;

fig. 5 is a third perspective view of a stepping motor driver according to a first embodiment;

fig. 6 is a fourth perspective view of a stepping motor driver according to a first embodiment;

fig. 7 is a front view of another stepping motor driver provided in the first embodiment;

fig. 8 is a right side view of another stepping motor driver provided in the first embodiment;

fig. 9 is a first perspective view of another stepping motor driver provided in the first embodiment;

fig. 10 is a second perspective view of another stepping motor driver provided in the first embodiment;

fig. 11 is a third perspective view of another stepping motor driver provided in the first embodiment;

fig. 12 is a fourth perspective view of another stepping motor driver provided in the first embodiment;

fig. 13 is a perspective view of another stepping motor driver according to the first embodiment;

fig. 14 is a top view of another stepping motor driver provided in the first embodiment;

fig. 15 is a first perspective view of still another stepper motor driver provided in the first embodiment;

fig. 16 is a second perspective view of still another stepper motor driver provided in the first embodiment;

fig. 17 is a perspective view of another stepping motor driver provided in the first embodiment.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments, not all embodiments, in the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The present invention will now be further explained by way of the detailed description in conjunction with the drawings.

The first embodiment is as follows:

the embodiment of the utility model provides a step motor driver, from aspects such as heat dispersion, the convenience that ground connection used that promote step motor driver, reliability, improve step motor driver's structure for step motor driver after the improvement can have great promotion on heat dispersion, has again that ground connection connects the convenience, uses reliably, the better characteristic of security.

For ease of understanding, the present embodiment is described below with reference to the stepping motor driver illustrated in fig. 1 to 6 as an exemplary illustration for ease of understanding; and it should be understood that the structure provided by the present embodiment is not limited to the stepping motor driver shown in fig. 1 to 6, and is also applicable to a servo motor driver, a hybrid motor driver, or the like.

Referring to fig. 1 to 6, the stepping motor driver in the present embodiment includes: the circuit board comprises a shell 1, a heat dissipation frame 2 matched with the shell 1 to form a closed space, a circuit board arranged in the closed space and a heat dissipation fan 4;

the circuit board in this embodiment is used as a driving control board of a motor driver, and a microprocessor, a control circuit and corresponding functional circuits may be disposed on the circuit board, and the circuit board may include one circuit board or two circuit boards; the specific structure and type of the circuit board are not described in detail herein.

The heat dissipation frame 2 in this embodiment can be used as a part of a housing cover of the motor driver, and is combined with the housing 1 to form a complete housing, which may reduce the cost of the motor driver and improve the material utilization rate. The heat dissipation frame 2 is made of a heat dissipation material, such as but not limited to a metal material with good heat dissipation performance or a ceramic material with good heat dissipation performance. Referring to fig. 1 to 6, the heat dissipation frame 2 specifically includes a heat dissipation main board 20, a plurality of heat dissipation fins 21 disposed on a back surface of the heat dissipation main board 20, and a heat dissipation air duct is formed by a gap between adjacent heat dissipation fins 21; the heat dissipation fan 4 is fixed in the area corresponding to the heat dissipation fins 21 outside the housing, and the air flow formed by the heat dissipation fan dissipates the heat absorbed by the heat dissipation main board 20 and the heat dissipation fins 21 from the circuit board along the heat dissipation air duct, so that the dissipation of the heat is accelerated, and the heat dissipation efficiency is improved.

For ease of understanding, the present embodiment will be described below by taking several mounting manners of the cooling fan as examples:

the first method is as follows: the heat dissipation fins 21 enclose a mounting cavity 211 for mounting the heat dissipation fan 4 on the back of the heat dissipation main board 20, and the back of the heat dissipation main board 20 forms the bottom surface of the mounting cavity 211; the heat dissipation fan 4 is installed in the installation cavity 211, and an air outlet surface of the heat dissipation fan 4 is opposite to the back surface of the heat dissipation main board 20; wherein, the heat dissipation fins 21 are fully distributed on the back surface of the heat dissipation motherboard 20, or only distributed in a local area on the back surface of the heat dissipation motherboard 20;

the second method comprises the following steps: the heat dissipation fan 4 is fixed on the heat dissipation fins 21 through a support frame, and the air outlet surface of the heat dissipation fan 4 is opposite to the heat dissipation fins 21; the wind blown out by the heat radiation fan 4 directly acts on the heat radiation fins 21 to accelerate the radiation of heat on the heat radiation fins 21; it should be understood that the supporting bracket may be, but is not limited to, various supporting brackets, supporting screws, etc. capable of fixing and supporting the heat dissipation fan 4 on the heat dissipation fins 21;

the third method comprises the following steps: the heat radiation fan 4 is fixed at the end part of the heat radiation air channel formed by the heat radiation fins 21 through a fixing frame, and the air outlet surface of the heat radiation fan 4 is opposite to the end part of the heat radiation air channel; the air blown out by the cooling fan 4 directly acts on one end of the cooling air duct formed by the cooling fins 21 and is blown out from the other end of the cooling air duct, thereby improving the cooling efficiency of the cooling fins 21. It should be understood that the fixing bracket can be, but is not limited to, various fixing brackets capable of fixing the heat dissipation fan 4 to the end of the heat dissipation air duct formed by the heat dissipation fins 21.

It can be seen that the closed-loop motor driver shown in fig. 1 to 6 has the heat dissipation fan 4 disposed outside the motor driver, so that the structure is simpler, the cost is lower, interference to the use of components on the internal circuit board is avoided, and the reliability of the motor driver is improved.

In some examples of the present embodiment, the heat dissipating main plate 20 and the heat dissipating fins 21 may be made of a metal material and integrally formed, and the heat dissipating fins 21 are disposed in parallel on the back surface of the heat dissipating main plate 20. In this example, the plurality of heat dissipating fins 21 on the back surface of the heat dissipating main board 20 may be longitudinally disposed, and the number of the heat dissipating fins 21 and the distance between adjacent heat dissipating fins 21 may be flexibly set according to the specific application requirement. And the spacing between each adjacent radiating fin can be the same, also can set up the spacing difference between at least some adjacent radiating fins as required. Of course, it should be understood that, in the present embodiment, the adjacent heat dissipation fins 21 may also be arranged non-parallel, or some of the heat dissipation fins 21 may also be arranged non-parallel, as required.

In addition, optionally, in some embodiments, a plurality of heat dissipation fins (not shown in the drawings) may also be longitudinally disposed on the front surface (i.e., the surface located in the enclosed space) of the heat dissipation main board 20 according to requirements, and the heat dissipation fins may also be parallel or non-parallel according to requirements. The specific longitudinal arrangement can adopt but not limited to vertical arrangement, can adopt longitudinal inclined arrangement and the like, and can also be flexibly set according to requirements. It should be understood that the heat dissipating fins disposed on the front surface may also be integrally formed with the heat dissipating main board 20, or may be disposed on the heat dissipating main board 20 in a non-integrally formed manner. And the distances among the radiating fins arranged on the front surface can be set to be equal, and also can be partially set to be equal, and can be partially set to be unequal.

In some examples of the present embodiment, the position of the area of the mounting cavity 211 specifically disposed on the back surface of the heat dissipation main board 20 can be flexibly set according to the requirement. For example, in order to improve the heat dissipation efficiency and the uniformity of heat dissipation as much as possible, the mounting cavity 211 may be disposed in the middle area of the back surface of the heat dissipation main plate 20, so that the wind flow generated by the heat dissipation fan 4 is diffused outward from the middle, thereby improving the heat dissipation efficiency and the uniformity of heat dissipation. Of course, in other examples of the present embodiment, the mounting cavity 211 may also be disposed in other areas on the back surface of the heat dissipating main board 20, for example, a certain end of the heat dissipating air duct disposed on the back surface of the heat dissipating main board 20.

In this embodiment, the mounting cavity 211 is communicated with at least a portion of the heat dissipation air duct, so that the air flow generated by the heat dissipation fan 4 is diffused outward along at least a portion of the heat dissipation air duct.

Optionally, in some examples of this embodiment, in order to further improve the heat dissipation efficiency, the stepping motor driver further includes a heat conducting member (not shown in the figure), which is disposed between the circuit board and the front surface of the heat dissipation main board 20, and is used for directly transferring heat generated by the heat generating element on the circuit board to the heat dissipation main board 20, and further passing through the heat dissipation main board 20 and the heat dissipation fins 21, and being matched with the heat dissipation fan 4 to dissipate the heat. The shape and structure of the heat-conducting member in this embodiment can be flexibly set as long as it can achieve the above-described functions. For example, in some examples, the thermal conductive member may be a thermal conductive film, and optionally, the thermal conductive film may be in direct contact with one surface of the circuit board (i.e., the heat source) and the other surface of the circuit board (i.e., the heat sink) to directly contact the heat dissipation main board 20. For another example, in other examples, the thermal conductive member may be a thermal conductive adhesive, and the thermal conductive adhesive is an insulating adhesive and may be filled in a gap between the circuit board and the front surface of the heat dissipation main board 20. In addition, it should be understood that the heat conducting member in this embodiment may be disposed only at a corresponding position on the circuit board with a larger heat generation amount, and other positions are not disposed.

Optionally, in order to further improve the heat dissipation efficiency, at least one heat dissipation grid 11 for dissipating heat outwards may be disposed at a position opposite to the left side and the right side of the housing 1, so as to facilitate rapid dissipation of heat from the heat dissipation grid region, thereby further improving the heat dissipation efficiency. And set up heat dissipation grid 11 in the relative position of left surface and right flank of casing 1 and can do benefit to and form air convection, further guarantee the quick giving off of thermal.

Optionally, in order to further improve the heat dissipation efficiency, a hollowed-out heat dissipation grid may be disposed on the top portion 11 of the housing 1, so that a part of the heat emitted from the bottom circuit board may be dissipated outwards through the heat dissipation grid, thereby providing multi-directional heat dissipation and accelerating the heat dissipation.

In some examples of the present embodiment, the bottom surface of the mounting cavity 211 (i.e., on the heat dissipation main board 20) is provided with lead holes (not shown in the drawings) penetrating through the front surface and the back surface of the heat dissipation main board 20, and the leads of the heat dissipation fan 4 can penetrate into the enclosed space through the lead holes and connect with a corresponding fan control interface on the circuit board, so as to provide power to the heat dissipation fan 4 and control the operation of the heat dissipation fan 4 through the fan control interface. The shape of the lead hole can be flexibly set, for example, the lead hole can be set to be circular, oval, rectangular or irregular, and the size of the lead hole is only required to be passed by the lead of the cooling fan 4.

Referring to fig. 1 to 6, in some examples of the present embodiment, the heat dissipating fan 4 includes a fan main body 42 and a fan bracket 41 for carrying and fixing the fan main body 42, and the fan main body 42 is fixed in the installation cavity 211 through the fan bracket 41. The fan bracket 41 can provide mechanical protection for the fan main body 42 on one hand, and can reliably fix the fan main body 42 on the heat dissipation main board 20 on the other hand. Wherein the mounting cavity 211 is shaped and sized to mate with the fan bracket 41; and the fan bracket 41 is arranged in the mounting cavity 211, and the mode of fixing on the heat dissipation main board 20 can be flexibly set. Such as but not limited to, snap, screw, etc. For ease of understanding, the following description will be made with reference to the structures shown in fig. 2 to 4 as examples. Four ends of the fan bracket 41 are respectively provided with a first screw hole, four corresponding second screw holes are arranged at corresponding positions on the heat dissipation main board 20 at the bottom of the installation cavity 211, and the screws 43 respectively and sequentially penetrate through the first screw holes and the second screw holes so as to install the fan bracket 41 in the installation cavity 211 and fix the fan bracket on the heat dissipation main board 20.

In this embodiment, in order to further improve the heat dissipation efficiency, the fan bracket 41 may be hollow, so as to improve the air outlet efficiency generated by the fan main body 42, thereby further improving the heat dissipation efficiency. In addition, in order to improve the protection of the heat radiation fan 4 and prevent the heat radiation fan 4 from being damaged in the use process, the height of the heat radiation fan 4 can be set to be not more than the height of the installation cavity 211, so that the heat radiation fan 4 can be hidden in the installation cavity 211, the integration of the assembly of the closed-loop stepping motor can be improved, and the enhancement protection of the heat radiation fan 4 can be realized.

In addition, it should be understood that, in some examples of the present embodiment, the housing 1 and the heat dissipation frame 2 may be fixedly connected in various ways. Such as, but not limited to, a screw connection, a snap connection, a combination screw and snap connection, etc.

In addition, in this embodiment, in order to improve the convenience of using and wiring the stepping motor driver and improve the user experience satisfaction, the circuit board is provided with the interface unit, and the housing 1 is correspondingly provided with the hollow hole for exposing the interface unit, and the interface unit is exposed to the outside through the hollow hole on the housing 1. In this embodiment, the interface unit includes a first interface unit and a second interface unit distributed on two adjacent sides of the circuit board; the interface units are respectively arranged on two adjacent sides, so that the stepper motor driver is more convenient to use and wire, and the user experience satisfaction is improved.

It should be understood that, in the present embodiment, the setting of the specific interfaces in the first interface unit and the second interface unit can be flexibly set according to the requirement. For example, in one example, the first interface unit may include, but is not limited to, at least one of a debug interface, an I/O interface, an encoder interface, and a motor winding interface, and the second interface unit may include, but is not limited to, a communication interface;

for another example, in another example, the first interface unit may include, but is not limited to, at least one of an I/O interface and a motor winding interface, and the second interface unit may include, but is not limited to, a debug interface.

The communication interface in this embodiment may include, but is not limited to, at least one of an RS232 communication interface, an RS485 communication interface, a CAN communication interface, an Ethercat communication interface, and a USB interface, where the communication interface may be used, but is not limited to, transmitting various communication signals.

The debugging interface in this embodiment may adopt, but is not limited to, a USB interface and an RS232 interface, and may be used to transmit various data in the debugging process.

The I/O interface in this embodiment includes an I/O interface for input and an I/O interface for output.

Optionally, a display unit may be further disposed on the circuit board in this embodiment, where the first interface unit is disposed, and the display unit may include, but is not limited to, at least one of an OLED display screen, a liquid crystal display screen, and a nixie tube. In some examples of this embodiment, the display unit may be directly exposed to the outside without a cover for direct viewing. In other examples of this embodiment, the display unit may also have a cover that covers, and the display unit is exposed to the outside only when the cover that covers is opened. In addition, the display unit in the present embodiment may include, but is not limited to, at least one of an alarm display unit, a power supply display unit, and a driver status display unit.

Optionally, the circuit board in this embodiment may further include at least one of a dial switch, a reset switch, and an alarm indication interface on a side where the second interface unit is disposed, where:

the dial switch can be, but is not limited to, a flat dial switch, a rotary dial switch;

the reset switch can be used for triggering, but not limited to, the update signal of the stepping motor driver to update the software program or the driver program of the stepping motor driver, triggering the burning signal of the stepping motor driver to burn the software program or the driver program of the stepping motor driver, or resetting and controlling the software program or the driver program.

It should be understood that the specific layout of the above described interface units, switches and display units on the closed loop motor drive can be flexibly set. For example, referring to fig. 1 to fig. 6, a first interface unit is disposed on one side (shown as a front side in the figures) of a circuit board, where the first interface unit includes a motor winding interface 33, an encoder interface 32, an IO interface 31, and a debugging interface 34, which are disposed in a layout from bottom to top, and a display unit 35 is further disposed on the front side, where the IO interface 31 includes an input I/O interface and an output I/O interface, which are disposed in a layout from bottom to top; the debugging interface 34 is an RS232 interface; the display unit 35 includes an alarm display unit and an operating state display unit. The right side adjacent to the front side on the circuit board is provided with a second interface unit, the two interface units comprise a communication unit 36, wherein the communication unit 36 comprises two RS485 communication interfaces which are adjacently arranged, and CAN also be an RS232 communication interface, a CAN communication interface or an Ethercat communication interface and the like. The right side is also provided with a first dial switch 37, the first dial switch shown in the figure is an 8-bit horizontal dial switch, and can be set as a 4-bit or 6-bit horizontal dial switch or a rotary switch with corresponding digits according to requirements.

For ease of understanding, the present embodiment is further described below with reference to another exemplary closed-loop motor driver structure as an example. Referring to fig. 7-12, the closed-loop motor drive shown in the figures differs from the closed-loop motor drive shown in fig. 1-6 mainly in the specific interface layout.

Referring to fig. 7-12, a first interface unit is disposed on one side (shown as the front side in the figures) of a circuit board of the closed-loop stepping motor driver, and the first interface unit includes a motor winding interface 33 and an IO interface 31 which are sequentially arranged from bottom to top; a display unit 35 is further disposed on the front side, wherein the IO interface 31 also includes an input I/O interface and an output I/O interface sequentially disposed from bottom to top; the display unit 35 may also include an alarm display unit and an operating state display unit. A second interface unit is arranged on the right side of the circuit board adjacent to the front side, and comprises a debugging interface 34, wherein the debugging interface 34 can be an RS232 interface but not; a second dial switch 38 is further disposed on the right side, and the second dial switch shown in the figure is a 6-bit horizontal dial switch, but may also be a 4-bit or 8-bit horizontal dial switch or a rotary switch with a corresponding number of bits according to requirements.

For a better understanding of the present invention, a further closed-loop stepper motor driver structure shown in fig. 13-14 is described as an example. In this example, the heat dissipation fan 4 is fixed on the heat dissipation fins 21 by a support frame, and the air outlet surface of the heat dissipation fan 4 is opposite to the heat dissipation fins 21; the wind blown out by the heat radiation fan 4 directly acts on the heat radiation fins 21 to accelerate the dissipation of heat from the heat radiation fins 21. The support frame in this example includes an upper support column 44 disposed on the heat dissipation fan 4 and having a screw through hole penetrating through the upper and lower ends thereof, and also includes a lower support column disposed on the back of the heat dissipation main board and corresponding to the upper support column 44, and a corresponding screw hole is also disposed on the lower support column 45. The heat dissipation fan 4 sequentially passes through the screw through holes on the upper support column 44 and the corresponding screw holes on the lower support column 45 through the support screws, so that the heat dissipation fan 4 is fixed above the heat dissipation fins. It should be understood that the number of the upper support columns 44 and the lower support columns 45 may be determined in this embodiment. For example, two pairs of upper support columns 44 and lower support columns 45 may be provided at diagonal positions, three pairs of upper support columns 44 and lower support columns 45 may be provided in a triangular distribution, or a pair of upper support columns 44 and a pair of lower support columns 45 may be provided at four corner positions of the heat dissipation fan, respectively.

For a better understanding of the present invention, the following description will be made with reference to another closed-loop stepping motor driver structure shown in fig. 15 to 16 as an example. In this example, the heat dissipation fan 4 is fixed to an end portion of a heat dissipation air duct formed by the heat dissipation fins 21 through a fixing frame (shown in the figure as an upper end portion of the heat dissipation air duct formed by the heat dissipation fins 21, and may of course be disposed at a lower end portion of the heat dissipation air duct formed by the heat dissipation fins 21), and an air outlet surface of the heat dissipation fan 4 is opposite to the upper end portion of the heat dissipation air duct; the air blown out by the heat radiation fan 4 directly acts on the upper end of the heat radiation air duct formed by the heat radiation fins 21 and is blown out from the lower end of the heat radiation air duct, thereby improving the heat radiation efficiency of the heat radiation fins 21. The support frame in this example includes an upper fixing column 46 disposed on the heat dissipating fan 4 and having a screw through hole penetrating through the upper and lower ends thereof, and a lower fixing column (not shown) disposed on the back of the heat dissipating main board and corresponding to the upper fixing column 46, and the lower fixing column is also provided with a corresponding screw hole. The heat dissipation fan 4 sequentially passes through the screw through holes of the upper fixing posts 46 through the fixing screws and penetrates through the corresponding screw holes of the lower fixing posts, so that the heat dissipation fan 4 is fixed at the upper end portion of the heat dissipation air duct formed by the heat dissipation fins 21. It should be understood that the number of the upper fixing posts 46 and the lower fixing posts may be determined in this embodiment. For example, but not limited to, the arrangement of two pairs of upper fixing posts 46 and upper fixing posts as shown in the figures may be used. A pair of upper fixing posts 46 and upper fixing posts may also be respectively disposed at four corners of the heat dissipation fan 4, for example, please refer to the four pairs of upper fixing posts 46 and upper fixing posts shown in fig. 17.

It can be seen that, in the embodiment, the heat dissipation fan 4 is arranged on the back surface of the heat dissipation main board 20 instead of in the housing, and the heat dissipation fan 4 is located outside the motor driver, so that the arrangement structure is simpler, the cost is lower, interference on the use of components on the internal circuit board is avoided, and the reliability of the motor driver is improved;

in addition, in the embodiment, the interface unit disposed on the circuit board is exposed to the outside through the hollow hole on the housing 1, and the interface unit includes a first interface unit and a second interface unit distributed on two adjacent sides of the circuit board; the interface units are respectively arranged on two adjacent sides, so that the stepper motor driver is more convenient to use and wire, and the user experience satisfaction is improved.

Example two:

the embodiment also provides an automation device, which comprises the stepping motor driver shown in the above embodiments, and a motor connected with the stepping motor driver, wherein the stepping motor driver is used for controlling the motor. The automatic equipment can be applied to various automatic control fields, for example, the automatic equipment can be mechanical hand equipment or a logistics trolley or 3C automatic equipment and the like.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above embodiment numbers of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention essentially or the part contributing to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk, etc.) and includes a plurality of instructions for enabling a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc. to execute the method according to the embodiments of the present invention.

While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims (12)

1. A stepper motor driver, comprising: the heat dissipation device comprises a shell (1), a heat dissipation frame (2) which is matched with the shell (1) to form a closed space, a circuit board which is arranged in the closed space, and a heat dissipation fan (4);

the heat dissipation frame (2) is made of heat dissipation materials and comprises a heat dissipation main board (20), a plurality of heat dissipation fins (21) are arranged on the back surface of the heat dissipation main board (20), and a heat dissipation air channel is formed by gaps between every two adjacent heat dissipation fins (21); the heat dissipation fan (4) is fixed at an area outside the shell (1) corresponding to the heat dissipation fins (21), and the heat dissipated from the heat dissipation main board (20) and the heat dissipation fins (21) along the heat dissipation air duct is dissipated by the airflow formed by the heat dissipation fan;

the circuit board is provided with an interface unit which is exposed outside through a hollow hole on the shell (1); the interface unit comprises a first interface unit and a second interface unit which are respectively positioned at two adjacent sides of the circuit board.

2. The stepping motor driver as claimed in claim 1, wherein said heat dissipating fins (21) enclose a mounting cavity (211) for mounting said heat dissipating fan (4) on a back surface of said heat dissipating main board (20), the back surface of said heat dissipating main board (20) constituting a bottom surface of said mounting cavity (211); the heat radiation fan (4) is arranged in the installation cavity (211), and the air outlet surface of the heat radiation fan (4) is opposite to the back surface of the heat radiation main board (20);

the heat dissipation fins (21) are distributed on the back surface of the heat dissipation main board (20), or only distributed in a local area on the back surface of the heat dissipation main board (20);

or the like, or, alternatively,

the heat dissipation fan (4) is fixed on the heat dissipation fins (21) through a support frame, and the air outlet surface of the heat dissipation fan (4) is opposite to the heat dissipation fins (21);

or the like, or, alternatively,

the heat dissipation fan (4) is fixed at the end part of a heat dissipation air channel formed by the heat dissipation fins (21) through a fixing frame, and the air outlet surface of the heat dissipation fan (4) is opposite to the end part of the heat dissipation air channel.

3. The stepping motor driver according to claim 2, wherein said heat dissipating main plate (20) and said heat dissipating fins (21) are made of a metal material and are integrally formed, and said heat dissipating fins (21) are arranged in parallel with each other on a back surface of said heat dissipating main plate (20).

4. The stepping motor driver as claimed in claim 2, wherein said mounting cavity (211) is located at a middle region of a rear surface of said heat dissipating main board (20).

5. The stepping motor driver as claimed in any one of claims 2 to 4, wherein said bottom surface of said mounting cavity (211) is provided with lead holes penetrating through said front and back surfaces of said heat dissipating main board, and wires of said heat dissipating fan (4) are passed through said lead holes into said enclosed space and connected to a corresponding fan control interface on said circuit board.

6. The stepping motor driver according to any of claims 1 to 4, further comprising a heat conductive member disposed between said circuit board and a front surface of said heat dissipating main board (20) for transferring heat generated from a heat generating component on said circuit board to said heat dissipating main board (20).

7. Stepping motor driver according to any of claims 2 to 4, wherein said heat dissipating fan (4) comprises a fan body (42), and a fan bracket (41) for carrying and fixing said fan body (42), said fan body (42) being fixed in said mounting cavity (211) by said fan bracket (41).

8. Stepping motor driver according to any of claims 2 to 4, wherein the height of said heat dissipation fan (4) is not greater than the height of said mounting cavity (211).

9. The stepper motor driver of any of claims 1-4, wherein the first interface unit comprises at least one of a debug interface, an I/O interface, an encoder interface, and a motor winding interface, and the second interface unit comprises a communication interface;

or the like, or, alternatively,

the first interface unit comprises at least one of an I/O interface and a motor winding interface, and the second interface unit comprises a debugging interface.

10. The stepping motor driver as claimed in claim 9, wherein a display unit is further provided on a side of said circuit board on which said first interface unit is provided, and at least one of a dial switch, a reset switch and an alarm indication interface is further provided on a side of said circuit board on which said second interface unit is provided.

11. The stepping motor driver as claimed in claim 10, wherein a side of said circuit board on which said first interface unit is provided comprises: the motor winding interface, the encoder interface, the IO interface, the debugging interface and the display unit 35 are arranged in sequence, or the motor winding interface, the IO interface and the display unit are arranged in sequence;

one side of the circuit board, on which the second interface unit is disposed, includes: the device comprises a communication unit and a first dial switch which are arranged in sequence, or comprises a second dial switch, a debugging interface and a reset switch which are arranged in sequence.

12. An automation device, characterized in that the automation device comprises a stepper motor driver according to any of claims 1-9, and a motor connected to the stepper motor driver for controlling the motor.

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