Line-removing laminated electric actuator assembly

Abstract

A wire-removed and stacked electric actuator assembly comprises a shell which is formed by assembling a bottom box and a cover plate, and a lower layer cavity and an upper layer cavity are formed; the output shaft, the transmission speed reducing mechanism, the framework partition plate, the motor, the microswitch, the integrated circuit board and the sealing plate are sequentially stacked in the lower-layer cavity from bottom to top, and the master control circuit board is arranged in the upper-layer cavity. Wherein the motor is provided with a metal conducting strip protruding upwards, and the metal conducting strip is connected into the integrated circuit board; a conductive pin of the microswitch is bent upwards, and the conductive pin is connected into the integrated circuit board; the sealing plate is provided with a plugging port, and the integrated electric connecting piece is electrically connected with the master control circuit board through the plugging port. According to the utility model, laminated installation of parts is realized, a complete dewired circuit connection effect is achieved among the internal parts, and the circuit has the advantages of simpler installation, convenient maintenance, less signal interference, small heating amount and stable circuit function.

Description

Technical Field

[0001] This utility model relates to the technical field of actuators, and in particular to a de-wired, stacked electric actuator assembly. Background Technology

[0002] An electric actuator is a drive device that provides linear or rotary motion. It utilizes some kind of driving energy and operates under the action of a control signal. The actuator uses liquid, gas, electricity, or other energy sources and converts them into driving force through a motor, cylinder, or other device. Existing electric actuator positioning methods mainly include reed positioning and microswitch positioning, which mostly only achieve simple on / off positioning control and cannot meet the needs of the current market. For example, when connecting an electric actuator to a water meter, it is necessary to adjust the water flow rate; however, the above positioning methods can only achieve on / off functions and cannot achieve intelligent adjustment functions.

[0003] Different types of valves (such as gate valves, butterfly valves, ball valves, etc.) have different requirements for electric actuators. The appropriate electric actuator needs to be selected according to the valve type, diameter, torque and other parameters.

[0004] A prior art example, referring to patent document CN217786269U, discloses an actuator assembly for a flow meter, belonging to the field of metering instruments. It includes an actuator body and a PCB circuit board for connecting to a data acquisition unit. The actuator body includes an actuator motor and a speed-changing gear set. The data acquisition unit collects the metering signal from the flow meter and is electrically connected to the PCB circuit board. The PCB circuit board controls the actuator motor in the actuator body to perform actions. The actuator body and the PCB circuit board are integrated to form a single, universal module. This universal module is detachable and installable within the flow meter. The PCB circuit board is provided with wiring ports for connecting wiring harnesses to facilitate connection to the data acquisition unit and / or a power supply. Furthermore, this utility model also discloses a smart water meter using the above-mentioned actuator assembly. The advantage of this utility model is that it achieves modular standardization of the actuator assembly, which not only increases compatibility but also facilitates the assembly and maintenance of the flow meter.

[0005] Based on the description and accompanying drawings of the aforementioned technical examples, it can be inferred without a doubt that within the actuator assembly, multiple cables are needed to electrically connect the motor, microswitches, and other electrical components to the circuit board in order to realize the circuit structure. The large number of cables causes at least the following problems to the actuator: difficult installation, inconvenient maintenance, signal interference, and poor heat dissipation affecting cable performance. On the other hand, the use of a single circuit board means that all circuit control functions need to be implemented on that single board. This results in a higher load on the board and increased heat generation, thus affecting normal performance. It also leads to a larger board size to accommodate sufficient electronic components, occupying more space and increasing the overall size of the actuator housing, thus limiting installation space and environmental constraints. Furthermore, if the circuit function is damaged, since the circuit board is located inside the actuator, extensive disassembly of the actuator is required for maintenance.

[0006] It is rather inconvenient, and after disassembly, it needs to be re-sealed with glue; otherwise, the waterproof sealing performance will be greatly reduced. Summary of the Invention

[0007] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a de-wired, stacked electric actuator assembly.

[0008] The technical solution of this utility model to solve its technical problem is: a de-wired, stacked electric actuator assembly, comprising:

[0009] The housing is assembled from a bottom box and a cover plate. The housing forms a lower chamber and an upper chamber. The bottom of the lower chamber has an output hole, and the upper chamber has a wire hole.

[0010] An output shaft, which is disposed in the lower chamber, extends out of the housing after passing at least partially through an output hole;

[0011] A transmission reduction mechanism is disposed in the lower chamber, and the output end of the transmission reduction mechanism is connected to the output shaft in a transmission connection.

[0012] The skeleton partition is arranged in the lower chamber and stacked on the upper end of the transmission reduction mechanism;

[0013] The motor and micro switch are arranged in the lower chamber and stacked on the upper end of the skeleton partition. The motor is connected to the input end of the transmission reduction mechanism, and the micro switch is connected to the transmission reduction mechanism.

[0014] An integrated circuit board, which is disposed in a lower chamber and stacked on top of a motor and a micro switch, has integrated electrical connections;

[0015] A sealing plate is disposed in the lower chamber and covers the upper end of the integrated circuit board, and the sealing plate serves as a boundary component between the lower chamber and the upper chamber.

[0016] The main control circuit board is located in the upper chamber;

[0017] The motor has an upwardly protruding metal conductive plate that is connected to the integrated circuit board, thereby forming an electrical connection between the motor and the integrated circuit board. The conductive pins of the micro switch are bent upwards and connected to the integrated circuit board, thereby forming an electrical connection between the micro switch and the integrated circuit board. The sealing plate has an interface, through which the integrated electrical connector forms an electrical connection with the main control circuit board. External cables enter the upper chamber through the wire hole and form an electrical connection with the main control circuit board.

[0018] Optionally, the skeleton partition has a plurality of first pillars, second pillars and third pillars, wherein the first pillars abut against the sealing plate, the second pillars abut against the integrated circuit board, and the third pillars abut against the micro switch.

[0019] Preferably, the transmission reduction mechanism is a gear reduction mechanism, wherein the gear reduction mechanism is connected to the output shaft and has an output gear with the same rotational speed.

[0020] Furthermore, the output gear is provided with a position feedback component, and the skeleton partition is provided with a track groove. The position feedback component enters the upper part of the skeleton partition after passing through the track groove, and the position feedback component forms a contactable connection with the micro switch.

[0021] In some preferred embodiments of this utility model, the upper end face of the sealing plate is lower than the bottom end face of the upper chamber to form a recessed area, and the recessed area is filled with sealant, which forms a sealant protective layer after curing.

[0022] In some preferred embodiments of this utility model, a plurality of fourth pillars are provided protruding upward in the upper chamber, and the main control circuit board is provided with positioning holes. The fourth pillars are at least partially inserted into the positioning holes, so that an overhead accommodating space is formed between the main control circuit board and the bottom surface of the upper chamber.

[0023] Preferably, the wire holes are multiple and staggered on the left and right sides of the upper chamber.

[0024] In some preferred embodiments of this utility model, the main control circuit board has a plurality of protruding electronic components, and the lower end of the cover plate is provided with a plurality of limiting rings protruding downward, and the electronic components extend into the limiting rings.

[0025] In some preferred embodiments of this utility model, the lower end of the base box is provided with a protective ring protruding downwards, and the output hole is formed in the protective ring.

[0026] Furthermore, the lower end of the base box is provided with an auxiliary support column protruding downwards. The auxiliary support column has a connection hole and there are multiple auxiliary support columns symmetrically distributed around the periphery of the protective ring.

[0027] The beneficial effects of this utility model are as follows:

[0028] 1. The internal space of the housing is divided into an upper chamber and a lower chamber by using a sealing plate to provide more suitable installation space for different components.

[0029] Second, stacking the output shaft, transmission reduction mechanism, motor and micro switch, integrated circuit board and main control circuit board from bottom to top helps to reduce the length and width of the housing, so as to meet the installation and use requirements in smaller spaces.

[0030] Third, a dual-circuit board approach (integrated circuit board and main control circuit board) is adopted, which effectively reduces the load on a single circuit board and reduces the heat generated during operation. Furthermore, the two are installed in separate sections (lower chamber and upper chamber) to prevent heat accumulation and facilitate heat dissipation, thereby achieving more stable and reliable circuit functions.

[0031] IV. The integrated circuit board and the main control circuit board are preferably designed to perform different circuit functions (e.g., the integrated circuit board serves as the control unit for micro switches and motors, while the main control circuit board serves as the control unit for the overall control of the actuator, including the opening, pipe, and water leakage alarm functions). When some functions of the main control circuit board fail to function properly, only the main control circuit board in the upper chamber needs to be inspected, without opening the sealing plate. Therefore, it is easier to maintain and repair when some faults occur.

[0032] Fifth, by employing a dual-circuit board approach and optimizing the circuit structure (using metal conductive sheets, conductive pins, and other circuit structural components), a wireless circuit connection effect can be achieved within the lower chamber (eliminating the need for cable connections). Simultaneously, integrated electrical connectors are used to achieve a wireless circuit connection effect between the integrated circuit board and the main control circuit board. Therefore, compared to existing technologies, the electric actuator in this disclosure achieves a completely wireless circuit connection effect between its internal components, offering advantages such as simpler installation, easier maintenance, less signal interference, lower heat generation, and more stable circuit function. Attached Figure Description

[0033] Figure 1 This is a schematic diagram illustrating the use of this utility model.

[0034] Figure 2 This is a schematic diagram of the bottom structure of this utility model.

[0035] Figure 3 It is an exploded view of the present utility model.

[0036] Figure 4 This is a cross-sectional view of the present invention.

[0037] Figure 5 This is a schematic diagram of the internal structure after the gear reduction mechanism is installed in the lower chamber.

[0038] Figure 6 This is a schematic diagram of the internal structure of the lower chamber after the skeleton partitions are stacked.

[0039] Figure 7 This is a schematic diagram of the internal structure after the motor and micro switch are stacked in the lower chamber.

[0040] Figure 8 This is a schematic diagram of the internal structure after the integrated circuit boards are stacked in the lower chamber.

[0041] Figure 9 This is a schematic diagram of the internal structure of the lower chamber after the sealing plates are stacked.

[0042] Figure 10 This is a schematic diagram of the internal structure of the upper chamber after the main control circuit board is assembled.

[0043] In the diagram: 1. Housing; 11. Base box; 111. Protective ring; 112. Auxiliary support; 1121. Connecting hole; 12. Cover plate; 121. Limiting ring; 13. Lower chamber; 131. Wire hole; 14. Upper chamber; 141. Output hole; 142. Fourth support; 15. Overhead accommodating space; 2. Output shaft; 3. Gear reduction mechanism; 31. Output gear; 32. Position feedback component; 4. Frame partition; 41. Track groove; 42. First support; 43. Second support; 44. Third support; 5. Motor; 51. Metal conductive sheet; 6. Micro switch; 61. Conductive pin; 7. Integrated circuit board; 71. Integrated electrical connector; 8. Sealing plate; 81. Plug interface; 82. Recessed area; 9. Main control circuit board; 91. Positioning hole; 92. Electronic components; 10. External valve body. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments are merely specific descriptions of the present invention, and their purpose is to enable those skilled in the art to better understand the technical solution of the present invention, and should not be regarded as limitations on the present invention.

[0045] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] Example 1

[0048] Reference Figures 1-10 A decoupled, stacked electric actuator assembly includes: a housing 1, which is assembled from a base box 11 and a cover plate 12, wherein a lower chamber 13 and an upper chamber 14 are formed within the housing 1, an output hole 141 is provided at the bottom of the lower chamber 13, and a wire hole 131 is provided in the upper chamber 14; an output shaft 2, which is disposed in the lower chamber 13, and the output shaft 2 extends out of the housing 1 after at least partially passing through the output hole 141; and a transmission reduction mechanism, as shown in the figure. Figure 5 It is configured in the lower chamber 13, and the output end of the transmission reduction mechanism forms a transmission connection with the output shaft 2; the skeleton partition 4, as shown in the figure Figure 6 It is configured in the lower chamber 13 and stacked on top of the transmission reduction mechanism; the motor 5 and the micro switch 6, refer to Figure 7 It is configured in the lower chamber 13 and stacked on the upper end of the skeleton partition 4. The motor 5 forms a transmission connection with the input end of the transmission reduction mechanism, and the micro switch 6 forms a contactable connection with the transmission reduction mechanism; integrated circuit board 7, see reference. Figure 8 It is configured in the lower chamber 13 and stacked on top of the motor 5 and the micro switch 6. The integrated circuit board 7 has an integrated electrical connector 71; the sealing plate 8, see reference. Figure 9 It is disposed in the lower chamber 13 and covers the upper end of the integrated circuit board 7, and the sealing plate 8 serves as the boundary between the lower chamber 13 and the upper chamber 14; the main control circuit board 9, refer to Figure 10 It is located in the upper chamber 14.

[0049] The above describes the spatial layout and component arrangement scheme of this utility model. Firstly, the sealing plate 8 divides the internal space of the housing 1 into an upper chamber 14 and a lower chamber 13, providing more suitable installation space for different components. Secondly, the output shaft 2, transmission reduction mechanism, motor 5, micro switch 6, integrated circuit board 7, and main control circuit board 9 are stacked from bottom to top, which helps to reduce the length and width of the housing 1, meeting the installation and use requirements in smaller spaces. Thirdly, a dual-circuit board approach (integrated circuit board 7 and main control circuit board 9) is adopted, effectively reducing the load on a single circuit board and reducing heat generation during operation. The circuit is divided into two sections (lower chamber 13 and upper chamber 14) to prevent heat accumulation and facilitate heat dissipation, thereby achieving more stable and reliable circuit functions. Fourth, the integrated circuit board 7 and the main control circuit board 9 are preferably designed to perform different circuit functions (e.g., the integrated circuit board 7 acts as the control unit for the micro switch 6 and the motor 5, and the main control circuit board 9 acts as the control unit for the overall control of the actuator's opening, pipe, and water leakage alarm functions). When some functions of the main control circuit board 9 fail to function properly, only the main control circuit board 9 in the upper chamber 14 needs to be inspected, without opening the sealing plate 8. Therefore, it is easier to maintain and repair when some faults occur.

[0050] It is particularly important to emphasize that, referring to Figures 7-8 The motor 5 has an upwardly protruding metal conductive plate 51, which is connected to the integrated circuit board 7 to form an electrical connection between the motor 5 and the integrated circuit board 7. The conductive pins 61 of the micro switch 6 are bent upwards and connected to the integrated circuit board 7 to form an electrical connection between the micro switch 6 and the integrated circuit board 7. The sealing plate 8 has a plug-in interface 81, and the integrated electrical connector 71 is electrically connected to the main control circuit board 9 through the plug-in interface 81. External cables enter the upper chamber 14 through the wire hole 131 and are electrically connected to the main control circuit board 9. By adopting a dual circuit board approach and optimizing the circuit structure (using circuit structural components such as the metal conductive plate 51 and conductive pins 61), the wireless circuit connection effect in the lower chamber 13 can be achieved (no cable connection required). At the same time, the integrated electrical connector 71 is used to achieve the wireless circuit connection effect between the integrated circuit board 7 and the main control circuit board 9. Therefore, compared with the prior art, the electric actuator in this disclosure achieves a completely wire-free circuit connection between its internal components, and has the advantages of simpler installation, convenient maintenance, less signal interference, less heat generation, and stable circuit function.

[0051] Preferably, refer to Figure 5The transmission reduction mechanism is a gear reduction mechanism 3, which is connected to the output shaft 2 and has an output gear 31 with the same rotational speed, thus enabling the output shaft 2 and the output gear 31 to move synchronously. Furthermore, the output gear 31 is equipped with a position feedback component 32, and the frame partition 4 has a track groove 41. The position feedback component 32 passes through the track groove 41 and enters above the frame partition 4, forming a contactable connection with the micro switch 6. When the position feedback component 32 contacts the micro switch 6, it can analyze and feedback the instantaneous position of the output shaft 2 and the output gear 31, thereby outputting various required control signals such as on / off and forward / reverse rotation to the motor 5.

[0052] In some preferred embodiments of this utility model, reference is made to Figure 9 The upper surface of the sealing plate 8 is lower than the bottom surface of the upper chamber 14 to form a recessed area 82. Sealant is poured into the recessed area 82, and after curing, a protective sealant layer is formed. After the components in the lower chamber 13 are assembled, the sealing plate 8 is placed on top, and sealant is poured over the sealing plate 8 to improve the water drainage and sealing performance of the lower chamber 13, effectively protecting the components within it. Furthermore, if a circuit malfunction occurs and the fault originates from the main control circuit board 9, it is not necessary to open the sealing plate 8 (i.e., there is no need to remove the sealant and refill) to inspect the integrated circuit board 7, thus making maintenance more convenient.

[0053] Example 2

[0054] Based on the structure of Embodiment 1, this embodiment provides a preferred support and installation structure, as follows:

[0055] I. Reference Figure 6 The skeleton partition 4 has several first support pillars 42, second support pillars 43, and third support pillars 44. The first support pillars 42 abut against the sealing plate 8, the second support pillars 43 abut against the integrated circuit board 7, and the third support pillars 44 abut against the micro switch 6. The skeleton partition 4 serves three purposes: first, it provides mounting support for the gear transmission mechanism (the central shaft of the gear is fixed to the skeleton partition 4); second, it provides mounting support for the motor 5; and third, the various support pillars (first support pillar 42, second support pillar 43, and third support pillar 44) provide effective mounting support for the sealing plate 8, integrated circuit board 7, and micro switch 6. Furthermore, the height and shape of each support pillar vary to accommodate the needs of different components, resulting in a more compact, orderly, and rational distribution of components in the secondary chamber.

[0056] II. Reference Figures 9-10The upper chamber 14 contains several upward-protruding fourth support pillars 142. The main control circuit board 9 has positioning holes 91. The fourth support pillars 142 are at least partially inserted into the positioning holes 91, forming an overhead accommodating space 15 between the main control circuit board 9 and the bottom surface of the upper chamber 14. The fourth support pillars 142 achieve two benefits: first, they enable the main control circuit board 9 to be suspended in the upper chamber 14, thus providing a larger surface area in contact with air, resulting in better heat dissipation and ensuring stable operation of the main control circuit board 9 over a long period; second, the overhead accommodating space 15 provides space for cable installation, as the main control circuit board 9 needs to be electrically connected to an external power source via cables.

[0057] Preferably, refer to Figure 2 The wire holes 131 are multiple and staggered on the left and right sides of the upper chamber 14. Each wire hole 131 can realize the function of cable entry and exit, so that the wiring direction has more options and meets the needs of different installation scenarios.

[0058] III. Reference Figure 4 , Figure 10 The main control circuit board 9 has several protruding electronic components 92. The lower end of the cover plate 12 has several downward-protruding limiting rings 121, into which the electronic components 92 extend. The limiting rings 121 provide a limiting function for some of the electronic components 92, preventing vibration and detachment, thus making the main control circuit board 9 more stable and reliable.

[0059] IV. Reference Figures 1-3 The lower end of the base box 11 has a downward-protruding protective ring 111, and the output hole 141 is formed in the protective ring 111. When the electric actuator is connected to the external valve body, the output shaft 2 cooperates with the valve stem of the external valve body to achieve transmission. However, if the output shaft 2 and the external valve body are directly exposed to the outside, they are easily affected by external factors, making them more prone to jamming, deformation, and other malfunctions. By setting the protective ring 111, the output shaft 2 and the external valve body can be wrapped inside to provide effective protection, enabling them to operate stably and reliably for a long time.

[0060] V. Reference Figures 1-2The lower end of the base box 11 is also provided with an auxiliary support 112 protruding downwards. The auxiliary support 112 has a connecting hole 1121. Multiple auxiliary supports 112 are symmetrically distributed around the periphery of the protective ring 111. The housing 1 is generally made of plastic, and the electric actuator is quite heavy. Therefore, if the connection between the electric actuator and the external valve body is solely through the connection of the output shaft 2, the output shaft 2 and the external valve body will bear a large force, making them prone to deformation and breakage. By providing the auxiliary support 112, the fastener, after passing through the hole on the external valve body, is inserted into the connecting hole 1121 on the auxiliary support 112. This creates more connection points between the external valve body and the housing 1 of the electric actuator, providing higher connection strength and making the connection more stable and reliable.

[0061] It is worth noting that the other technical solutions of this utility model are all existing technologies, and therefore will not be described in detail.

[0062] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the concept of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A de-wired, stacked electric actuator assembly, characterized in that, Including: The housing (1) is assembled from a bottom box (11) and a cover plate (12). The housing (1) forms a lower chamber (13) and an upper chamber (14). The bottom of the lower chamber (13) is provided with an output hole (141), and the upper chamber (14) is provided with a wire hole (131). An output shaft (2) is disposed in the lower chamber (13), and the output shaft (2) extends out of the housing (1) after passing at least partially through the output hole (141); A transmission reduction mechanism is configured in the lower chamber (13), and the output end of the transmission reduction mechanism is connected to the output shaft (2) in a transmission connection. A skeleton partition (4) is disposed in the lower chamber (13) and stacked on the upper end of the transmission reduction mechanism; The motor (5) and the micro switch (6) are arranged in the lower chamber (13) and stacked on the upper end of the skeleton partition (4). The motor (5) forms a transmission connection with the input end of the transmission reduction mechanism, and the micro switch (6) forms a contactable connection with the transmission reduction mechanism. An integrated circuit board (7) is disposed in the lower chamber (13) and stacked on top of the motor (5) and the micro switch (6), the integrated circuit board (7) having an integrated electrical connector (71); A sealing plate (8) is disposed in the lower chamber (13) and covers the upper end of the integrated circuit board (7), and the sealing plate (8) serves as a boundary component between the lower chamber (13) and the upper chamber (14). The main control circuit board (9) is located in the upper chamber (14); The motor (5) has an upwardly protruding metal conductive sheet (51), which is connected to the integrated circuit board (7) so that the motor (5) and the integrated circuit board (7) form an electrical connection; the conductive pin (61) of the micro switch (6) is bent upward and connected to the integrated circuit board (7) so that the micro switch (6) and the integrated circuit board (7) form an electrical connection; the sealing plate (8) is provided with a plug-in interface (81), and the integrated electrical connector (71) is connected to the main control circuit board (9) through the plug-in interface (81); the external cable enters the upper chamber (14) through the wire hole (131) and is connected to the main control circuit board (9).

2. The de-wired, stacked electric actuator assembly according to claim 1, characterized in that: The skeleton partition (4) has a plurality of first pillars (42), second pillars (43) and third pillars (44). The first pillars (42) abut against the sealing plate (8), the second pillars (43) abut against the integrated circuit board (7), and the third pillars (44) abut against the micro switch (6).

3. The de-wired, stacked electric actuator assembly according to claim 1, characterized in that: The transmission reduction mechanism is a gear reduction mechanism (3), and the gear reduction mechanism (3) is connected to the output shaft (2) and has the same rotational speed as the output gear (31).

4. The de-wired, stacked electric actuator assembly according to claim 3, characterized in that: The output gear (31) is provided with a position feedback component (32), and the skeleton partition (4) is provided with a track groove (41). The position feedback component (32) enters the upper part of the skeleton partition (4) after passing through the track groove (41), and the position feedback component (32) and the micro switch (6) form a contactable connection.

5. The de-wired, stacked electric actuator assembly according to claim 1, characterized in that: The upper end face of the sealing plate (8) is lower than the bottom end face of the upper chamber (14) to form a recessed area (82). The recessed area (82) is filled with sealant, and the sealant forms a sealant protective layer after curing.

6. The de-wired, stacked electric actuator assembly according to claim 1, characterized in that: The upper chamber (14) has several fourth pillars (142) protruding upwards. The main control circuit board (9) has positioning holes (91). The fourth pillars (142) are at least partially inserted into the positioning holes (91), so that an overhead accommodating space (15) is formed between the main control circuit board (9) and the bottom surface of the upper chamber (14).

7. The de-wired, stacked electric actuator assembly according to claim 1, characterized in that: The aforementioned wire holes (131) are multiple and staggered on the left and right sides of the upper chamber (14).

8. The de-wired, stacked electric actuator assembly according to claim 1, characterized in that: The main control circuit board (9) has several protruding electronic components (92), and the lower end of the cover plate (12) is provided with several limiting rings (121) protruding downwards, and the electronic components (92) extend into the limiting rings (121).

9. The de-wired, stacked electric actuator assembly according to claim 1, characterized in that: The bottom of the base box (11) is provided with a protective ring (111) protruding downwards, and the output hole (141) is formed in the protective ring (111).

10. The de-wired, stacked electric actuator assembly according to claim 9, characterized in that: The bottom end of the base box (11) is also provided with an auxiliary support column (112) protruding downwards. The auxiliary support column (112) is provided with a connection hole (1121). There are multiple auxiliary support columns (112) symmetrically distributed around the protective ring (111).

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