Motor control unit convenient to disassemble and replace and electrical equipment comprising motor control unit

Abstract

The present invention relates to a motor control unit for a DC motor of an electrical device, and specifically relates to a motor control unit convenient to disassemble and replace, comprising: a control unit; the PCB module is provided with a potting area and a mounting area adjacent to the potting area; the socket module is fixedly installed in the installation area of the PCB module, and the control unit is detachably installed on the socket module; the connection module is used for establishing a signal connection between the control unit and the PCB module or establishing a signal and power supply connection between the control unit and the PCB module, so that the PCB module receives a signal and / or power input by the control unit, thereby controlling the signal and / or power of the DC motor; the socket module comprises a separation component, and the separation component is configured to be used for separating a potting area and a mounting area of the PCB module at an adjacent position, so that glue cannot flow into the mounting area when the potting area of the PCB module is subjected to glue pouring.

Description

TECHNICAL FIELD

[0001] The present application relates to a motor control unit for a DC motor of an electrical appliance, in particular to a motor control unit facilitating disassembly and replacement and an electrical appliance comprising the same. BACKGROUND

[0002] Currently, brushless DC motors are becoming more and more popular in power tools or household appliances. The existing brushless DC motor control unit comprises two main components: a control unit for signal and / or power input, and a PCB module for controlling power and signal. The entire assembly of the control unit and the PCB module within the power tool is connected by wires. With this method, the contact system can be easily replaced only in the case of subsequent wear. However, an additional voltage drop is introduced, which reduces the efficiency of the system and makes the assembly of the power tool more complicated, possibly squeezing the wires and prolonging the assembly time.

[0003] For the above reasons, some brushless DC motor control units integrate the control unit and the PCB module into a single PCB, thereby saving space within the power tool. However, this method has a disadvantage that if the entire brushless DC motor control unit has no other defects, the entire integrated PCB must be replaced in the case of wear of the control unit contacts, increasing the maintenance cost compared to the traditional solution.

[0004] The utility model discloses a kind of electric tools, including shell and the tool assembly of being arranged in shell, tool assembly includes power supply assembly and motor assembly, shell includes the handle portion with handle cavity assembled, tool assembly further includes circuit board assembly arranged in handle cavity, circuit board assembly includes the circuit board being electrically connected with power supply assembly and motor assembly and the metal plate being thermally communicated with circuit board and being substantially parallel configuration, the inner surface of metal plate has recess, circuit board is housed in recess in thickness direction.There is further disclosed: circuit board assembly further includes a switch that is fixed to the metal plate of control portion and elastically protrudes from handle portion.The switch is signal switch, switch and control portion are electrically connected by connector.The design of switch being directly arranged in high-strength metal plate increases the stability and pressure strength of the active piece of switch, and, switch is mounted on metal plate by buckle, and the design of being electrically connected by connector has better mountability and replaceability.Of course, the electrical connection between switch and control portion can also be realized by cable or other forms in some other cases.The patent provides convenience for the assembly of switch, but in order to reduce the influence of external vibration on circuit board, after placing circuit board in the recess of metal plate, it is also necessary to fill the sealant for covering circuit board, at this time, switch is packaged together with circuit board and metal plate, which is also inconvenient for disassembly and replacement of switch.

[0005] The application number 201820640007.3 discloses an electric tool with integrated circuit board, including electric tool and circuit board, the electric tool includes one or more components, the component or the component is fixed on the circuit board, and the circuit board and other components or circuit units form electrical connection. The component arranged on one side of the circuit board is a switch, preferably, the switch is a stepless speed change switch, and is a plug-in stepless speed change switch, that is, the stepless speed change switch has a row of pins, which are inserted into the fixing hole of the circuit board and welded, that is, fixed on the circuit board through plug-in packaging technology, so that packaging can be carried out through machine equipment, so that wires do not need to be used, and manual welding is not required. The application welds the pins of the switch on the circuit board, which is also not convenient for disassembly and replacement of the switch, and the switch is connected with the circuit board only through the pins, which is easy to be affected by external vibration. SUMMARY

[0006] The present application aims to alleviate at least one of the above problems.

[0007] The present application can be directed to several broad forms. Embodiments of the present application can include one or any combination of the different broad forms described herein.

[0008] In a first broad form, the present application provides an electric motor control unit facilitating disassembly and replacement for controlling operation of a DC motor of an electric device, the electric motor control unit comprising:

[0009] a control unit;

[0010] a PCB module having a potting area and a mounting area adjacent to the potting area;

[0011] a socket module fixedly mounted to the mounting area of the PCB module, the control unit being detachably mounted to the socket module;

[0012] a connection module for establishing signal connection between the control unit and the PCB module, or for establishing signal and power connection between the control unit and the PCB module, so that the PCB module receives signals and / or power input by the control unit to control signals and / or power of the DC motor;

[0013] wherein the socket module comprises a partition member configured to partition the potting area and the mounting area of the PCB module at the adjacent place, so that glue does not flow into the mounting area when potting is performed on the potting area of the PCB module.

[0014] Preferably, the socket module comprises a three-dimensional closed loop structure having a first open face, and the control unit comprises a housing, at least a part of the housing being inserted into the socket module through the first open face.

[0015] Preferably, the first opening face is configured on a side face of the socket module, and at least a portion of the housing of the control unit is inserted into the socket module through the first opening face in the X-axis or Y-axis direction; or, the first opening face is configured on a top face of the socket module, and at least a portion of the housing of the control unit is inserted into the socket module through the first opening face in the Z-axis direction.

[0016] Preferably, the control unit comprises a speed control member, at least a portion of the speed control member is located outside the housing, and the socket module is configured with a second opening face cooperating with the portion of the speed control member located outside the housing.

[0017] Preferably, the second opening face coincides with the first opening face.

[0018] Preferably, the control unit comprises a reversing control member, at least a portion of the reversing control member is located outside the housing, and the socket module is configured with a third opening face cooperating with the portion of the reversing control member located outside the housing.

[0019] Preferably, the third opening face coincides with the first opening face.

[0020] Preferably, at least one first locking member is configured between the control unit and the socket module, and the first locking member is configured to firmly but releasably interconnect the housing of the control unit and the socket module.

[0021] Typically, the first locking member comprises a quick release member configured for quick release of the first locking member.

[0022] Preferably, at least one first guide member is configured between the control unit and the socket module, and the first guide member is configured to enable correct installation of the housing of the control unit into the socket module.

[0023] Preferably, an elastic member is configured between the control unit and the socket module, and the elastic member is configured to reduce relative movement of the housing of the control unit and the socket module and to prevent particles, dust and water from entering the PCB module through the socket module.

[0024] Preferably, at least one second locking member is configured between the socket module and the PCB module, and the second locking member is configured to firmly but releasably interconnect the socket module and the PCB module.

[0025] Preferably, at least one second guide member is configured between the socket module and the PCB module, and the second guide member is configured to enable correct installation of the socket module in the installation area of the PCB module.

[0026] Preferably, the socket module is detachably connected to the installation area of the PCB module.

[0027] Another preferably, the socket module is integrated with the PCB module.

[0028] Preferably, the potting area of the PCB module is covered with glue to reduce the influence of external vibration on the PCB module and to prevent contamination of the internal electronic components of the PCB module by particles, dust and water.

[0029] Preferably, the connection module further comprises power connection members for establishing power connection between the control unit and the PCB module.

[0030] Typically, the signal connection members are any one of a pin header connector, a PCB edge connector, a USB connector, a pogo pin connector and a spring loaded connector.

[0031] Preferably, the connection module further comprises power connection members for establishing power connection between the control unit and the PCB module.

[0032] Typically, the power connection members are any one of a clip connector, a socket connector and a pin header connector.

[0033] Another preferably, the housing surface of the control unit is extended with connection members, and the connection module comprises signal connection members for establishing signal connection between the connection members of the control unit and the PCB module.

[0034] Preferably, the connection module further comprises power connection members for establishing power connection between the connection members of the control unit and the PCB module.

[0035] In a second broad form, the present application provides an electric motor control unit facilitating disassembly and replacement for controlling operation of a DC motor of an electric appliance, the electric motor control unit comprising:

[0036] a control unit;

[0037] a PCB module having a potting area and a mounting area adjacent to the potting area;

[0038] an isolation module configured to be detachably mounted to the mounting area of the PCB module to separate the potting area and the mounting area of the PCB module at the adjacent place when potting is performed on the potting area of the PCB module, and configured to be removed from the mounting area of the PCB module to allow the control unit to be detachably mounted to the mounting area of the PCB module when the glue of the potting area of the PCB module is solidified.

[0039] The connection module is configured to establish a signal connection between the control unit and the PCB module, or to establish a signal and power connection between the control unit and the PCB module, so that the PCB module receives the signal and / or power input from the control unit to control the signal and / or power of the DC motor.

[0040] Preferably, at least one first locking member is configured between the control unit and the mounting area of the PCB module, and the first locking member is configured to firmly but releasably interconnect the housing of the control unit and the mounting area of the PCB module.

[0041] Preferably, the first locking member includes a quick release member configured to quickly release the first locking member.

[0042] Preferably, at least one first guiding member is configured between the control unit and the mounting area of the PCB module, and the first guiding member is configured to correctly mount the housing of the control unit to the mounting area of the PCB module.

[0043] Preferably, the potting area of the PCB module is covered with glue to reduce the influence of external vibration on the PCB module and prevent particles, dust and water from polluting the internal electronic components of the PCB module.

[0044] Preferably, the connection module includes a signal connection member for establishing a signal connection between the control unit and the PCB module.

[0045] Typically, the signal connection member is any one of a pin header connector, a PCB edge connector, a USB connector, a pogo pin connector and a spring-loaded connector.

[0046] Preferably, the connection module further includes a power connection member for establishing a power connection between the control unit and the PCB module.

[0047] Typically, the power connection member is any one of a clip connector, a socket connector and a pin header connector.

[0048] In another broad form, the present application provides an electrical device including the motor control unit described above. BRIEF DESCRIPTION OF DRAWINGS

[0049] The present application will be more fully understood from the following detailed description of preferred but non-limiting embodiments of the application, described with reference to the accompanying drawings, in which:

[0050] Figures 1A-1B The perspective view and the front view of the motor control unit of the first embodiment of the present application are shown respectively, and the motor control unit includes a control unit, a PCB module, a socket module and a connection module, wherein Figure 1BThe dashed line part shows the potting area.

[0051] Figures 2A-2C The figures respectively show the perspective view of the motor control unit of the first embodiment of the present application before assembly, during assembly and after assembly. First, the socket module is assembled on the mounting area of the PCB module, and then the control unit is assembled in the socket module, wherein Figure 2A The dashed line part shows the mounting area.

[0052] Figures 3A-3B The figures respectively show the perspective view of the motor control unit of the first embodiment of the present application before assembly and during assembly. The perspective view after assembly is the same as Figure 2C the perspective view of the motor control unit of the first embodiment of the present application before assembly, during assembly and after assembly. First, the socket module is assembled on the mounting area of the PCB module, and then the control unit is assembled in the socket module, wherein Figure 3A The dashed line part shows the mounting area.

[0053] Figure 4 The figures respectively show the perspective view of the control unit of the first embodiment of the present application. The insertion surface of the control unit is provided with conductive spring sheets and conductive jacks.

[0054] Figures 5A-5C The figures respectively show the assembly method of the control unit and the PCB module of the first embodiment of the present application, wherein Figure 5A is mounted along the X-axis direction, Figure 5B is mounted along the Y-axis direction, Figure 5C is mounted along the Z-axis direction. In 5A-5C, the control unit can be mounted or disassembled in the direction of the solid arrow, or can be mounted or disassembled in the direction of the dashed arrow.

[0055] Figures 6A-6F The figures respectively show the signal connection method of the control unit and the PCB module of the first embodiment of the present application, wherein Figure 6A is a pin header connector, Figure 6B is a PCB edge connector, Figures 6C-6D is a pogo pin connector, Figures 6E-6F is a spring-loaded connector.

[0056] Figures 7A-7D The figures respectively show the power connection method of the control unit and the PCB module of the first embodiment of the present application, wherein Figure 7A is a clip connector, Figure 7B is a socket connector, Figure 7C is a pin header connector, Figure 7D is a wire + connector.

[0057] Figure 8This is a perspective view of an alternative embodiment of the motor control unit of this application. The housing surface of the control unit has a connecting member extending from it, and a signal connecting member and a power connecting member are disposed between the connecting member of the control unit and the PCB module.

[0058] Figures 9A-9B A perspective view and an exploded view of the motor control unit according to the second embodiment of this application are shown respectively. The motor control unit includes a control unit, a PCB module, a socket module and a connection module, with the socket module integrated into the PCB module.

[0059] Figure 10 A perspective view of a PCB module and a socket module according to a second embodiment of this application is shown, wherein the socket module is integrated into the PCB module.

[0060] Figure 11 A perspective view of the control unit of the second and third embodiments of this application is shown, wherein the insertion surface of the control unit is provided with guide posts.

[0061] Figures 12A-12B A perspective view and an exploded view of the motor control unit according to the third embodiment of this application are shown respectively. The motor control unit includes a control unit, a PCB module and a connection module.

[0062] Figures 13A-13B The figures show a perspective view and an exploded view of the PCB module and the isolation module according to the third embodiment of this application. When potting is performed in the potting area of ​​the PCB module, the isolation module is detachably installed in the mounting area of ​​the PCB module to prevent the adhesive from flowing into the mounting area. After the adhesive in the potting area of ​​the PCB module has cured, the isolation module is removed from the mounting area of ​​the PCB module, and the control unit is detachably installed in the mounting area of ​​the PCB module.

[0063] Figure 14 A perspective view of the PCB module according to the third embodiment of this application is shown. Detailed Implementation

[0064] Preferred embodiments of this application will be described herein with reference to Figures 1 to 12. Figure 14 The following description is provided. Embodiments include a motor control unit for use with power tools, such as electric drills, grinders, sanders, saws, rotary tools, etc. It should be understood that while this embodiment is described as being used with power tools, this is merely for illustrative purposes, and alternative embodiments of this application can certainly be used with other types of electrical equipment, such as electric gardening tools. Furthermore, although the embodiments of this application described herein refer to electrical equipment including a motor, it should be understood that alternative embodiments of this application are also applicable to electrical equipment including solenoid-type electromechanical units to enable operative movement (e.g., reciprocating movement) of the electrical equipment.

[0065] likeFigures 1A-1B 、 Figures 2A-2C and Figure 4 Figure 1 shows an embodiment of the motor control unit according to the present application, which is easy to disassemble and replace, for controlling the operation of a DC motor of an electrical device, the motor control unit comprising: a control unit 110; a PCB module 120, the PCB module 120 having a potting area 120B and a mounting area 120A adjacent to the potting area 120B; a socket module 130, the socket module 130 being fixedly mounted to the mounting area 120A of the PCB module 120, and the control unit 110 being detachably mounted to the socket module 130; a connecting module for establishing a signal connection between the control unit 110 and the PCB module 120, or for establishing a signal and power connection between the control unit 110 and the PCB module 120, so that the PCB module 120 receives the signal and / or power input by the control unit 110, thereby controlling the signal and / or power of the DC motor; wherein the socket module 130 comprises a partition member 130A, the partition member 130A being configured to separate the potting area 120B of the PCB module 120 from the mounting area 120A at the adjacent place, so that when potting is performed on the potting area 120B of the PCB module 120, the glue does not flow into the mounting area 120A, thereby providing a fence for the potting glue of the PCB module 120. Specifically, the PCB module 120 comprises a PCB 120C and a bottom shell 120D, the PCB 120C being assembled in the bottom shell 120D, and the bottom shell 120D having a side wall extending upwardly corresponding to the edge of the potting area 120B, thereby providing a fence for the potting of the PCB 120C. In this embodiment, the shape of the socket module 130 is matched with the shape of the shell 110A of the control unit 110, and is a square structure. When the socket module 130 is assembled in the middle of the PCB module 120, the partition member 130A is configured to surround four sides; when one side of the socket module 130 is located at the edge of the PCB module 120, the partition member 130A is configured to surround three sides; when two sides of the socket module 130 are located at the edge of the PCB module 120, the partition member 130A is configured to surround two sides; when three sides of the socket module 130 are located at the edge of the PCB module 120, the partition member 130A is configured to surround one side. In short, the partition member 130A is configured at the connection between the mounting area 120A and the potting area 120B of the PCB module 120, for separating the potting area 120B of the PCB module 120 from the mounting area 120A at the adjacent place. The height of each side of the partition member 130A can be reasonably set as needed, and it should be pointed out that the height of each side of the partition member 130A needs to be slightly higher than the surface of the PCB module 120 after potting; of course, the height of a certain side of the partition member 130A can also be equal to the height of the socket module 130 as needed.

[0066] As Figures 2A-2CAs shown, the socket module 130 includes a three-dimensional closed-loop structure having a first opening face 130B, and the control unit 110 includes a housing 110A, at least a portion of which is inserted into the socket module 130 through the first opening face 130B. In the present embodiment, the first opening face 130B is disposed on the top surface of the socket module 130, and at least a portion of the housing 110A of the control unit 110 is inserted into the socket module 130 through the first opening face 130B in the Z-axis direction; of course, as a potential design variation, the assembly direction of the control unit 110 can also be in the opposite direction, as shown in the dashed line direction in Figure 5C , in which case the first opening face 130B is disposed on the bottom surface of the socket module 130. Alternatively, in other embodiments, the first opening face 130B can also be disposed on the right side surface of the socket module 130, and at least a portion of the housing 110A of the control unit 110 is inserted into the socket module 130 through the first opening face 130B in the X-axis direction, as shown in Figure 5A ; of course, as a potential design variation, the assembly direction of the control unit 110 can also be in the opposite direction, as shown in the dashed line direction in Figure 5A , in which case the first opening face 130B is disposed on the left side surface of the socket module 130. Alternatively, the first opening face 130B can also be disposed on the rear side surface of the socket module 130, and at least a portion of the housing 110A of the control unit 110 is inserted into the socket module 130 through the first opening face 130B in the Y-axis direction, as shown in Figure 5B ; of course, as a potential design variation, the assembly direction of the control unit 110 can also be in the opposite direction, as shown in the dashed line direction in Figure 5B , in which case the first opening face 130B is disposed on the front side surface of the socket module 130.

[0067] Reference is made to Figures 2A-2CThe control unit 110 includes a gear control member, at least part of which is located outside the housing 110A, and the socket module 130 is configured with a second opening surface 130C that cooperates with the part of the gear control member located outside the housing 110A. Specifically, the gear control member includes an actuator (not shown in the figure) located inside the housing 110A, a trigger 110B located outside the housing 110A, and an actuator shaft 110C connected between the actuator and the trigger 110B, and the second opening surface 130C facilitates accommodation of the actuator shaft 110C. In other embodiments, the second opening surface 130C can coincide with the first opening surface 130B, i.e., the mounting direction of the actuator shaft 110C and the trigger 110B is opposite to the direction in which the housing 110A is inserted into the socket module 130. The control unit 110 can also include a reversing control member, at least part of which is located outside the housing 110A, and the socket module 130 is configured with a third opening surface 130D that cooperates with the part of the reversing control member located outside the housing 110A. In other embodiments, the third opening surface 130D can coincide with the first opening surface 130B. Specifically, the reversing control member includes a reversing member 110D located outside the housing 110A, which can be a steering wheel or a reversing lever, and the third opening surface 130D facilitates accommodation of the reversing member 110D. In other embodiments, the third opening surface 130D can coincide with the first opening surface 130B, i.e., the mounting direction of the reversing member 110D is opposite to the direction in which the housing 110A is inserted into the socket module 130.

[0068] The connection module is a medium for connecting two or more objects to one piece, such as a socket, a jack, a terminal, a wire harness, etc., and generally refers to all connection elements used in electronic signals and power supply and their accessories. It serves as a bridge between blocked circuits or isolated circuits in the circuit, thereby enabling current flow and enabling the circuit to achieve the intended function. In the present embodiment, the connection module includes a signal connection member 140 for establishing a signal connection between the control unit 110 and the PCB module 120. Between the PCB module 120 and the control unit 110, there are various methods for establishing a signal connection, so the signal connection member 140 can be a pin connector as shown in Figure 6A , a PCB edge connector as shown in Figure 6B , a pogo pin connector as shown in Figures 6C-6D , a spring-loaded connector as shown in Figures 6E-6F , a USB connector as shown in Figure 8 , or other means for signal transmission. In the present embodiment, as shown in Figures 2A-2B and Figure 4As shown, the signal connecting member 140 includes a plurality of conductive pads 140A integrally formed on the PCB module 120 and a plurality of conductive springs 140B arranged on the housing 110A of the control unit 110 and corresponding to the plurality of conductive pads 140A. The bottom of the socket module 130 is provided with a plurality of first through holes 130E corresponding to the positions of the conductive springs 140B, through which the conductive springs 140B can pass. When the housing 110A of the control unit 110 is assembled to the PCB module 120, the plurality of conductive springs 140B arranged on the bottom of the housing 110A of the control unit 110 pass through the first through holes 130E of the bottom of the socket module 130 and abut against the corresponding conductive pads 140A on the PCB module 120 to establish electrical connection. The connecting module can further include a power connecting member 150 for establishing power connection between the control unit 110 and the PCB module 120. There are various methods for establishing power connection between the PCB module 120 and the control unit 110, and thus the power connecting member 150 can adopt, for example, a clip connector as shown in Figure 7A , a socket connector as shown in Figure 7B , a pin connector as shown in Figure 7C , a wire+ connector as shown in Figure 7D or other methods for power transmission. In the present embodiment, as shown in Figures 2A-2B and Figure 4 , the power connecting member 150 includes two conductive plugs 150A integrally formed on the socket module 130 and two conductive jacks 150B arranged on the housing 110A of the control unit 110 and corresponding to the two conductive plugs 150A. The conductive plugs 150A pass through the bottom of the socket module 130 and are connected to the jacks 120F on the PCB module 120 through the conductive pins 150C on the bottom of the conductive plugs 150A; when the housing 110A of the control unit 110 is assembled to the PCB module 120, the top of the conductive plugs 150A on the socket module 130 is inserted into the corresponding conductive jacks 150B on the bottom of the housing 110A of the control unit 110 to establish electrical connection, and the bottom of the conductive plugs 150A on the socket module 130 is connected to the PCB module 120 to establish electrical connection. In another embodiment, as shown in Figures 3A-3B , the two conductive plugs 150A are arranged on the PCB module 120, the conductive plugs 150A pass through the bottom of the socket module 130 and are connected to the jacks 120F on the PCB module 120 through the conductive pins 150C on the bottom of the conductive plugs 150A; when the housing 110A of the control unit 110 is assembled to the PCB module 120, the conductive plugs 150A on the PCB module 120 are inserted into the corresponding conductive jacks 150B on the bottom of the housing 110A of the control unit 110 to establish electrical connection. Alternatively, the second through holes 130F can be communicated with the first through holes 130E to form an integral through hole.

[0069] In some embodiments, such as Figure 8 As shown, a connecting member 110E extends from the surface of the housing 110A of the control unit 110. The connection module includes a signal connection member 140 for establishing a signal connection between the connecting member 110E of the control unit 110 and the PCB module 120. Alternatively, the connection module may also include a power connection member 150 for establishing a power connection between the connecting member 110E of the control unit 110 and the PCB module 120. The connecting member 110E may extend from the side or other surface of the control unit 110 and is configured to provide one or more electrical connections for transmitting signals and power, specifically implemented through one or more connectors.

[0070] like Figures 2A-2C As shown, in order to securely assemble the control unit 110 and the socket module 130 together, at least one first locking member is disposed between the control unit 110 and the socket module 130 to securely but releasably interconnect the housing 110A of the control unit 110 and the socket module 130. The first locking member may include, but is not limited to, snap-fit, screw, clip, or other known fastening devices. In this embodiment, as... Figure 2A As shown, the first locking member includes a locking block 130G disposed in the socket module 130 and a locking slot 110F disposed in the control unit 110. When the housing 110A of the control unit 110 is inserted into the socket module 130, the locking block 130G engages with the corresponding locking slot 110F, thereby achieving a secure assembly of the control unit 110 and the socket module 130. The number of locking blocks 130G and locking slots 110F can be reasonably set as needed, such as one, two, or more. In this embodiment, the number of locking blocks 130G and locking slots 110F is two. In some embodiments, the first locking member may further include a quick-release member, which allows the first locking member to be released quickly to unlock. The quick-release member may be a tab, button, or lever, etc., which allows the control unit 110 to be removed from the socket module 130 by hand or with simple hand tools without tools or with minimal tool assistance. The use of the first locking member enables the control unit 110 to be stably and reliably secured to its associated socket module 130 under normal operating conditions. However, the optional quick-release feature of the first locking member also facilitates easy disassembly of the control unit 110 when maintenance, repair, or replacement is required. Therefore, in standard use cases, the first locking member exhibits a strong and reliable connection, but can be quickly disassembled when needed without damaging the components. To ensure proper alignment of the control unit 110, at least one first guide member is disposed between the control unit 110 and the socket module 130 to allow the housing 110A of the control unit 110 to be properly installed into the socket module 130. In this embodiment, as... Figure 2AAs shown, the first guiding member includes a guide block 110G disposed on the side wall of the control unit 110 and a guide groove 130H disposed within the socket module 130 and cooperating with the guide block 110G. The guide block 110G is aligned with the guide groove 130H and inserted along the guide groove 130H, so that the housing 110A of the control unit 110 can be correctly installed into the socket module 130. The number of guide blocks 110G and guide grooves 130H can be reasonably set as needed, such as one, two, or more. In this embodiment, the number of guide blocks 110G and guide grooves 130H is two. The shape of the guide blocks 110G and guide grooves 130H can be reasonably set as needed, such as triangular, square, trapezoidal, T-shaped, and I-shaped, as long as the housing 110A of the control unit 110 can be correctly installed into the socket module 130. To achieve dustproof sealing and vibration resistance, an elastic member 130I is provided as an interface between the control unit 110 and the socket module 130. This eliminates assembly tolerances, thereby reducing the relative movement between the housing 110A of the assembly control unit 110 and the socket module 130, and improving contact wear. In this embodiment, the elastic member 130I has a ring-shaped structure, which mates with the bottom inner wall of the socket module 130 to reduce the relative movement between the assembled components.

[0071] The socket module 130 can be fixed to the PCB module 120 by soldering or appropriate connection methods, which makes it flexible and customizable for different types of control units 110. The use of the socket module 130 makes it easier to maintain, replace, or upgrade the control unit 110 without replacing the entire motor control unit 110, thus saving time and costs. In this embodiment, the socket module 130 is detachably mounted to the mounting area 120A of the PCB module 120. Alternatively, the socket module 130 can be mounted to the mounting area 120A of the PCB module 120 by snap-fit, fastening, screwing, or plugging. In this embodiment, as... Figure 2AAs shown, at least one second locking member is disposed between the socket module 130 and the PCB module 120 to securely but releasably interconnect the socket module 130 and the PCB module 120. Specifically, the second locking member includes a hook 130J disposed on the socket module 130 and a locking hole 120E disposed on the PCB module 120. When the socket module 130 is assembled to the PCB module 120, the hook 130J engages with the corresponding locking hole 120E, thereby achieving a secure assembly of the socket module 130 and the PCB module 120. The number of hooks 130J and locking holes 120E can be reasonably set as needed, such as one, two, or more. In this embodiment, the number of hooks 130J and locking holes 120E is four. It should be understood that the socket module 130 can also be fixed to the PCB module 120 by other methods such as welding, riveting, bonding, or crimping. In other embodiments, to ensure proper alignment of the socket module 130, at least one second guide member is disposed between the socket module 130 and the PCB module 120. The second guide member is configured to allow the socket module 130 to be correctly installed in the mounting area 120A of the PCB module 120. Alternatively, the second guide member may be a first guide member. In this embodiment, a second locking member may be used to function as the second guide member to ensure proper installation of the socket module 130 onto the PCB module 120.

[0072] In some embodiments, if the power tool is the type that is likely to be subjected to high vibrations during typical use, then an adhesive (such as silicone, epoxy, or polyurethane resin) can be used to encapsulate the PCB module 120 to attenuate the effects of vibration and thus mitigate damage to these components. Specifically, in the potting area 120B of the PCB module 120 (e.g., Figure 1B (As shown in the slanted area) Cover adhesive is used to mitigate the impact of external vibrations on the PCB module 120 and to prevent contamination of the internal electronic components of the PCB module 120 by particles, dust, and water. Alternatively, the cover adhesive can be applied to the potting area 120B of the PCB module 120 using low-pressure injection molding. Specifically, low-pressure hot melt adhesive can be used at low pressure (e.g., 1-60 bar) and an operating temperature below 230°C, and the cover adhesive can be applied to the potting area 120B of the PCB module 120 using low-pressure injection molding equipment.

[0073] like Figures 9A-9B and Figures 10-11The illustration shows a second embodiment of the motor control unit for easy disassembly and replacement according to this application. The difference from the first embodiment is that the socket module 130 and the PCB module 120 are integrated into one unit. Specifically, the socket module 130 and the bottom shell 120D of the PCB module 120 are integrally formed. In this embodiment, the first locking component includes a protective cover 160 and a fastener 170. A fixing block 130K protrudes upwards on one side of the socket module 130, and a protrusion 130L is fixed to the outer side of the fixing block 130K. A fixing post 130M is disposed on the other side of the socket module 130, and a fixing groove 130N is formed in the middle of the top of the fixing post 130M. Correspondingly, a snap hole 160A that mates with the protrusion 130L is disposed on one side of the protective cover 160, and a fixing hole 160B is disposed on the other side of the protective cover 160 corresponding to the fixing groove 130N. After the housing 110A of the control unit 110 is inserted into the socket module 130, the snap hole 160A on one side of the protective cover 160 is aligned with the protrusion 130L on one side of the socket module 130 and snapped in. Then, the fastener 170 is inserted through the fixing hole 160B on the other side of the protective cover 160 into the fixing groove 130N on the other side of the socket module 130 for fixation. The fastener can be a pin, screw, bolt, etc., to achieve a secure assembly of the control unit 110 and the socket module 130. In some embodiments, the first locking member may further include a quick-release member, which allows the first locking member to be released quickly to unlock. The quick-release member can be a tab, button, or lever, etc., which allows the control unit 110 to be removed from the socket module 130 by hand or with simple hand tools without tools or with minimal tool assistance. The use of the first locking member enables the control unit 110 to be reliably and securely fastened to its associated socket module 130 under normal operating conditions. However, the optional quick-release feature of the first locking member also facilitates the easy removal of the control unit 110 when maintenance, repair, or replacement is required. Therefore, in standard usage scenarios, the first locking member exhibits a strong and reliable connection, yet can be quickly disassembled without damaging the components when needed. The first guiding member includes a guide post 110H disposed on the insertion side of the control unit 110 and a guide hole 130P disposed on the bottom of the socket module 130 and cooperating with the guide post 110H. The guide post 110H is inserted into the guide hole 130P, aligning with the guide hole 130P, allowing the housing 110A of the control unit 110 to be correctly installed into the socket module 130. The shapes of the guide post 110H and the guide hole 130P can be reasonably configured as needed, such as triangular, square, trapezoidal, T-shaped, and I-shaped, as long as the housing 110A of the control unit 110 can be correctly installed into the socket module 130.

[0074] like Figure 11 , Figures 12A-12B , Figures 13A-13B and Figure 14The illustration shows a third embodiment of the motor control unit of this application, which is easy to disassemble and replace. The difference from the first embodiment is that the socket module 130 is replaced by an isolation module 180. When potting is performed in the potting area 120B of the PCB module 120, the isolation module 180 is configured to be detachably installed in the mounting area 120A of the PCB module 120, thus separating the potting area 120B and the mounting area 120A adjacent to each other. After the adhesive in the potting area 120B of the PCB module 120 has cured, the isolation module 180 is configured to be removed from the mounting area 120A of the PCB module 120, so that the control unit 110 can be detachably installed in the mounting area 120A of the PCB module 120. Specifically, the overall shape of the isolation module 180 corresponds to the shape of the control unit 110 as a square. The interior of the isolation module 180 can be a solid or hollow structure. Its bottom shape matches the top of the mounting area 120A of the PCB module 120, and its outer wall contour can be appropriately adjusted according to the shape of the mounting area 120A. In this embodiment, a stop block 180A is fixed on one side of the isolation module 180 corresponding to the connection module position of the control unit 110, so as to provide a position for the subsequent connection of the connection module. In this embodiment, the first locking member includes a protective cover 160 and a fastener 170. A fixing block 130K is provided on one side of the mounting area 120A of the PCB module 120, and a protrusion 130L is fixed on the outer side of the fixing block 130K. A fixing post 130M is arranged on the other side of the mounting area 120A of the PCB module 120. A fixing groove 130N is opened in the middle of the top of the fixing post 130M. Correspondingly, a card hole 160A that cooperates with the protrusion 130L is arranged on one side of the protective cover 160, and a fixing hole 160B is arranged on the other side of the protective cover 160 corresponding to the fixing groove 130N. After the housing 110A of the control unit 110 is inserted into the mounting area 120A of the PCB module 120, the snap hole 160A on one side of the protective cover 160 is aligned with the protrusion 130L on one side of the mounting area 120A of the PCB module 120 and snapped in. Then, the fastener 170 is inserted through the fixing hole 160B on the other side of the protective cover 160 into the fixing groove 130N on the other side of the mounting area 120A of the PCB module 120 for fixation. The fastener can be a pin, screw, bolt, etc., to securely assemble the control unit 110 into the mounting area 120A of the PCB module 120. In some embodiments, the first locking member may further include a quick-release member to quickly release the first locking member to unlock. The quick-release member can be a tab, button, or lever, etc., which allows the control unit 110 to be removed from the socket module 130 by hand or with simple hand tools without tools or with minimal tool assistance. The use of the first locking member enables the control unit 110 to be stably and reliably secured to the mounting area of ​​the PCB module 120 under normal operating conditions.However, the optional quick-release feature of the first locking member also facilitates easy disassembly of the control unit 110 when maintenance, repair, or replacement is required. Therefore, in standard use cases, the first locking member exhibits a strong and reliable connection, but can be quickly disassembled when needed without damaging the components. The first guiding member includes a guide post 110H disposed at the bottom of the control unit 110 and a guide hole 130P disposed in the mounting area of ​​the PCB module 120 and cooperating with the guide post 110H. The guide post 110H is inserted into the guide hole 130P, aligning with the guide hole 130P, so that the housing 110A of the control unit 110 can be correctly installed into the mounting area 120A of the PCB module 120. The number of guide posts 110H and guide holes 130P can be reasonably set as needed, such as one, two, or more. In this embodiment, the number of guide posts 110H and guide holes 130P is two. The shapes of the guide post 110H and guide hole 130P can be reasonably set as needed, such as triangular, square, trapezoidal, T-shaped, and I-shaped, as long as the housing 110A of the control unit 110 can be correctly installed into the socket module 130. The connection module includes a signal connection component 140 for establishing a signal connection between the control unit 110 and the PCB module 120. In this embodiment, the signal connection component 140 adopts a pin header connector, specifically including a connector male terminal 140C disposed on the control unit 110 and a connector female terminal 140D disposed on the PCB module 120 and correspondingly plugged into the connector female terminal 140D. Of course, in other embodiments, the signal connection component 140 can also adopt various signal transmission methods listed in Embodiment 1. The connection module may also include a power connection component 150 for establishing a power connection between the control unit 110 and the PCB module 120. The power connection component 150 can adopt various power transmission methods listed in Embodiment 1, which will not be described in detail here.

[0075] In view of the above, it should be understood that embodiments of the present invention can provide various advantages over the prior art. First, the control unit 110 and PCB module 120 are separate entities, but are efficiently connected through a quick-connect mechanism. The connection module is used to establish signal and power connections between the control unit 110 and the PCBA module. This configuration allows for quick and easy replacement of the control unit 110 while also saving space in the tooling. Second, the compact and integrated switch design reduces voltage drop and wiring complexity, enabling quick and convenient replacement of individual parts in the field / repair center without wasting resources. It also provides a reliable connection method capable of carrying high current and is sealed for dust and vibration resistance. Furthermore, compared to the prior art, the socket module 130 design not only reduces space occupation but also improves the maintainability of the control unit 110, making maintenance and replacement of the control unit 110 faster, easier, and less costly. The socket module 130 also ensures a precise connection between the control unit 110 and the PCB module 120, thereby improving performance and reliability. The socket module 130 also provides a enclosure for the PCB module 120 encapsulation process, ensuring that the disassembly and replacement of the control unit 110 is not affected even after the PCB module 120 is potted.

[0076] Those skilled in the art will understand that the invention described herein is readily adaptable to variations and modifications beyond those specifically described, without departing from the scope of the invention. All such variations and modifications that will be apparent to those skilled in the art should be considered to fall within the spirit and scope of the invention as broadly described above. It should be understood that the invention includes all such variations and modifications. The invention also includes all steps and features individually or collectively referenced or indicated in the specification, as well as any combination and all combinations of any two or more of said steps or features.

[0077] Any reference to prior art in this specification is not, and should not be construed as, an admission or in any way an implication that such prior art is part of common general knowledge.

Claims

1. A motor control unit for controlling the operation of a DC motor of an electric appliance, which is detachable and replaceable, characterized in that, The motor control unit comprises: a control unit; a PCB module having a potting area and a mounting area adjacent to the potting area; a socket module fixedly mounted to the mounting area of the PCB module, the control unit being detachably mounted to the socket module; a connection module for establishing signal connection between the control unit and the PCB module, or for establishing signal and power connection between the control unit and the PCB module, so that the PCB module receives the signal and / or power input by the control unit to control the signal and / or power of the DC motor; wherein the socket module comprises a partition member configured to separate the potting area of the PCB module from the mounting area at the adjacent position, so that the glue in the potting area of the PCB module does not flow into the mounting area when potting.

2. The motor control unit of claim 1, wherein, The socket module comprises a three-dimensional closed-loop structure having a first open surface, and the control unit comprises a housing, at least part of the housing being inserted into the socket module through the first open surface.

3. The motor control unit of claim 2, wherein, The first open surface is located on the side surface of the socket module, and at least part of the housing of the control unit is inserted into the socket module through the first open surface along the X-axis or Y-axis direction; or the first open surface is located on the top surface of the socket module, and at least part of the housing of the control unit is inserted into the socket module through the first open surface along the Z-axis direction.

4. The motor control unit of claim 2, wherein, The control unit comprises a speed control member, at least part of the speed control member being located outside the housing, and the socket module is provided with a second open surface cooperating with the part of the speed control member located outside the housing.

5. The motor control unit of claim 4, wherein, The second open surface coincides with the first open surface.

6. The motor control unit of claim 2, wherein, The control unit comprises a commutation control member, at least part of the commutation control member being located outside the housing, and the socket module is provided with a third open surface cooperating with the part of the commutation control member located outside the housing.

7. The motor control unit of claim 6, wherein, The third open surface coincides with the first open surface.

8. The motor control unit of claim 2, wherein, At least one first locking member is provided between the control unit and the socket module, and the first locking member is configured to firmly but releasably interconnect the housing of the control unit and the socket module.

9. The motor control unit of claim 8, wherein, The first locking member comprises a quick release member configured to quickly release the first locking member.

10. The motor control unit of claim 2, wherein, At least one first guide member is provided between the control unit and the socket module, and the first guide member is configured to enable the housing of the control unit to be correctly mounted into the socket module.

11. The motor control unit of claim 2, wherein, An elastic member is provided between the control unit and the socket module, and the elastic member is configured to reduce the relative movement between the housing of the control unit and the socket module, and to prevent particles, dust and water from entering the PCB module through the socket module.

12. The motor control unit of claim 1, wherein, At least one second locking member is configured between the socket module and the PCB module, and is configured to firmly but releasably interconnect the socket module and the PCB module.

13. The motor control unit of claim 1, wherein, At least one second guiding member is configured between the socket module and the PCB module, and is configured to enable the socket module to be correctly installed in the installation area of the PCB module.

14. The motor control unit of claim 1, wherein, The socket module is detachably installed in the installation area of the PCB module.

15. The motor control unit of claim 1, wherein, The socket module is integrated with the PCB module.

16. The motor control unit of claim 1, wherein, The potting area of the PCB module is covered with glue to reduce the influence of external vibration on the PCB module and prevent contamination of internal electronic components of the PCB module by particles, dust and water.

17. The motor control unit of claim 1, wherein, The connection module includes a signal connection member for establishing signal connection between the control unit and the PCB module.

18. The motor control unit of claim 17, wherein, The connection module further includes a power connection member for establishing power connection between the control unit and the PCB module.

19. The motor control unit of claim 2, wherein, The connection member extends from the surface of the housing of the control unit, and the connection module includes a signal connection member for establishing signal connection between the connection member of the control unit and the PCB module.

20. The motor control unit of claim 19, wherein, The connection module further includes a power connection member for establishing power connection between the connection member of the control unit and the PCB module.

21. A motor control unit for facilitating removal and replacement for controlling operation of a DC motor of an electrical appliance, characterized by, The motor control unit includes: a control unit including a housing; a PCB module having a potting area and an installation area adjacent to the potting area; an isolation module configured to be detachably installed in the installation area of the PCB module when potting is performed in the potting area of the PCB module, so as to separate the potting area and the installation area of the PCB module at the adjacent positions; and the isolation module is configured to be removed from the installation area of the PCB module after the glue in the potting area of the PCB module solidifies, so that the control unit can be detachably installed in the installation area of the PCB module; a connection module for establishing signal connection between the control unit and the PCB module, or for establishing signal and power connection between the control unit and the PCB module, so that the PCB module receives the signal and / or power input by the control unit to control the signal and / or power of the DC motor.

22. The motor control unit of claim 21, wherein, At least one first locking member is configured between the control unit and the installation area of the PCB module, and is configured to firmly but releasably interconnect the housing of the control unit and the installation area of the PCB module.

23. The motor control unit of claim 22, wherein, The first locking member includes a quick release member configured to quickly release the first locking member.

24. The motor control unit of claim 21, wherein, At least one first guide member is arranged between the control unit and the mounting area of the PCB module, and is configured to allow the housing of the control unit to be properly mounted to the mounting area of the PCB module.

25. The motor control unit of claim 21, wherein, The potting area of the PCB module is covered with glue to reduce the influence of external vibration on the PCB module and prevent contamination of internal electronic components of the PCB module by particles, dust and water.

26. The motor control unit of claim 21, wherein, The connection module includes a signal connection member for establishing signal connection between the control unit and the PCB module.

27. The motor control unit of claim 26, wherein, The connection module further includes a power connection member for establishing power connection between the control unit and the PCB module.

28. An electrical device, characterized by The electrical device includes the motor control unit of any one of claims 1 to 27.

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