Symmetrical double-gear-set water valve actuator structure and electronic water valve

Abstract

The symmetrical double-gear-set water valve actuator structure comprises an upper shell and a lower shell, the upper shell and the lower shell are both of a symmetrical structure, a mounting cavity is formed after the upper shell and the lower shell are buckled, and a PCBA control panel, two motors and two gear sets are mounted in the mounting cavity; each motor is in transmission connection with the gear set at the corresponding position, the two motors are electrically connected with the PCBA control panel, and the two motors and the two gear sets are symmetrically installed in the installation cavity. An electronic water valve is also disclosed. The requirements for multi-mode driving, stable and reliable structure and the like of an integrated water valve in a thermal management system are met, a completely symmetrical structure is adopted, the structures of the double motors and the double gear sets are completely the same, the mold opening cost and the material management cost are reduced, the installation process is simple, and fault management and control are convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile thermal management, and in particular to a symmetrical double gear set water valve actuator structure and an electronic water valve. Background Art

[0002] The actuator is a key component responsible for driving the water valve in the automotive thermal management system, and the driving form is crucial for the multi-channel water valve.

[0003] At present, most actuators use a set of motors to drive a set of gears, which are then controlled by a control board to drive the rotation of the water valve. The defects caused by the above problems are as follows: 1) Design and installation: The design is single and cannot realize the synchronous operation of multiple groups of water valves; 2) Cost: One set of motors requires one set of PCBA circuit boards to control them, which increases manufacturing and maintenance costs, and the accuracy is not high; 3) Reliability and performance: The one-to-one motor gear configuration leads to an increased probability of failure, unstable performance, and a thin structure that is prone to failure; 4) Functionality: If two sets of water valves are required to be used together, two different sets of actuators are required to drive them. The spatial arrangement of the two sets of water valves and actuators is a difficult problem to solve. Both the circuit control and power supply need to meet the needs of the two sets of actuators, which makes it inconvenient to use and the line redundancy is prone to failure. Summary of the invention

[0004] In view of the current technical problems, the present invention provides a symmetrical double gear set water valve actuator structure and an electronic water valve to solve the problems in the prior art.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions: A symmetrical double gear set water valve actuator structure comprises an upper shell and a lower shell, both of which are symmetrical structures. The upper shell and the lower shell are buckled together to form an installation cavity, in which a PCBA control board, two sets of motors and two sets of gear sets are installed. Each of the motors is transmission-connected to the gear set at a corresponding position, and both sets of motors are electrically connected to the PCBA control board. The two sets of motors and the two sets of gear sets are symmetrically installed in the installation cavity.

[0006] Preferably, the lower shell includes a lower shell body, a positioning metal bushing is distributed in the lower shell body, the PCBA control board is inserted into the positioning metal bushing, and then fixed by plastic hot riveting, and then connected by soldering.

[0007] Preferably, a thermally conductive adhesive heat dissipation structure is distributed at the bottom of the PCBA control board.

[0008] Preferably, the lower shell includes a lower shell body, and mounting positioning columns are provided at positions on both sides of the PCBA control board in the lower shell body; a mounting bracket is provided on the motor, and the mounting bracket can be passed through the mounting positioning columns; A supporting structure is distributed in the lower shell body, and the motor is supported on the supporting structure.

[0009] With such arrangement, during installation, the mounting bracket on the motor passes through the mounting positioning column, and then the motor is supported as a whole on the supporting structure, thereby achieving the installation and fixation of the motor.

[0010] Preferably, a shaft end limiting structure is provided in the lower shell body at a shaft end position close to the output shaft of the motor.

[0011] With such arrangement, the output shaft of the motor is limited and fixed by the shaft end limit structure, making the overall structure more stable.

[0012] Preferably, a Hall sensor is sleeved on the central axis of the motor, and the Hall sensor is electrically connected to the PCBA control board.

[0013] With this setup, one PCBA control board controls two sets of motors through Hall sensors. The combined logic has higher accuracy and more reliable performance than two control boards controlling two sets of motors. In addition, only one control system and power supply line are needed to meet the use of the actuator.

[0014] Preferably, silencer fins are respectively provided at positions corresponding to the motor in the upper shell and the lower shell.

[0015] Preferably, positioning pins are symmetrically arranged on the upper shell, and a pin hole is arranged in the lower shell at a position corresponding to the positioning pin, and the positioning pin is inserted into the pin hole when the upper shell is buckled with the lower shell.

[0016] Such an arrangement can ensure the accuracy of the positions of the upper shell and the lower shell when they are installed, thereby controlling the offset of the gear shaft to a minimum gap.

[0017] Preferably, one of the side surfaces of the lower shell is transitionally connected via a symmetrically arranged curved surface structure, and a reinforcing rib plate is provided at a position outside the lower shell corresponding to the curved surface structure.

[0018] Such arrangement can improve the overall strength and stability of the structure.

[0019] An electronic water valve comprises a valve body and two valve cores located in the valve body, and also comprises a symmetrical double gear set water valve actuator structure, wherein the two gear sets are respectively connected to the corresponding valve cores in a transmission manner.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention can meet the simultaneous drive of two motors. One program controls the rotation of the two motors to different positions. By controlling the different position combinations of the motors, the two spool valves driven are in different positions to meet various flow channel requirements. The present invention adopts a completely symmetrical structure, and the structures of the two motors and the two gear sets are exactly the same, which reduces the mold opening cost, material management cost, has simple installation process, convenient fault control and other obvious effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall assembly structure of the present invention; Figure 2 is Figure 1 an exploded structure diagram of; Figure 3 is Figure 1 an internal sectional view of; Figure 4 is Figure 1 a schematic diagram of the structure of the lower housing in; Figure 5 is Figure 4 a top view of; Figure 6 is Figure 1 a bottom view of the upper housing in. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present invention will be further described in detail below in conjunction with test examples and specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. All technologies implemented based on the content of the present invention belong to the scope of the present invention.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0024] As shown in the attached Figure 1 - attached Figure 6A symmetrical double gear set water valve actuator structure shown includes an upper shell 1 and a lower shell 2. Both the upper shell 1 and the lower shell 2 are symmetrical structures. After the upper shell 1 and the lower shell 2 are buckled together, an installation cavity is formed. A PCBA control board 5, two sets of motors 3 and two sets of gear sets 4 are installed in the installation cavity. Each motor 3 is transmission-connected to the gear set 4 at the corresponding position. Both sets of motors 3 are electrically connected to the PCBA control board 5. The two sets of motors 3 and the two sets of gear sets 4 are symmetrically installed in the installation cavity.

[0025] from Figure 2 , Figure 4 and Figure 5 It can be seen that the lower shell 2 includes a lower shell body, and a positioning metal bushing 51 is distributed in the lower shell body. The PCBA control board 5 is inserted into the positioning metal bushing 51, and then fixed by plastic hot riveting, and then connected by soldering. A thermal conductive adhesive heat dissipation structure 53 is distributed at the bottom of the PCBA control board 5. In this embodiment, the thermal conductive adhesive heat dissipation structure 53 is a thermal conductive block structure made of thermal conductive adhesive. Since the high-power heating of the dual motors is relatively serious, the combination of thermal conductive adhesive and thermal conductive block can effectively reduce the temperature rise and improve the operating reliability of the product. A grounding plate structure 52 is used between the motor and the PCBA control board 5, which can effectively reduce the interference of the signal and improve the control accuracy.

[0026] The lower housing 2 includes a lower housing body, in which mounting positioning columns 34 are provided at positions on both sides of the PCBA control board 5; a mounting bracket 32 ​​is provided on the motor 3, and the mounting bracket 32 ​​can be inserted into the mounting positioning columns 34 during installation; a supporting structure 35 is distributed at positions corresponding to both ends of the motor 3 in the lower housing body, and the motor 3 is supported on the supporting structure 35 after installation. At the same time, a shaft end limiting structure 36 is provided at the shaft end position of the output shaft of the motor 3 in the lower housing body, so as to limit and fix the shaft end position of the output shaft of the motor.

[0027] A Hall sensor 31 is sleeved on the central axis of the motor 3, and the Hall sensor 31 is electrically connected to the PCBA control board 5. One PCBA control board 5 controls two groups of motors respectively through the Hall sensor 31. The combined logic has higher accuracy and more reliable performance than two control boards controlling the two groups of motors. In addition, only one control system and power supply line are required to meet the use of the actuator.

[0028] One of the side surfaces of the lower shell 2 is transitionally connected via a symmetrically arranged curved surface structure. A reinforcing rib plate 23 is arranged at a position corresponding to the curved surface structure outside the lower shell 2. A wire insertion hole 6 is arranged in the middle of the reinforcing rib plate 23 to be connected to an external plug terminal.

[0029] Two sets of gear set mounting holes 41 and gear set mounting shafts 42 are distributed in the lower shell body, and the two sets of gear set mounting holes 41 and gear set mounting shafts 42 are symmetrically distributed. The gear set 4 is installed in the mounting cavity surrounded by the upper shell 1 and the lower shell 2 through the gear set mounting holes 41 and the gear set mounting shafts 42.

[0030] In this embodiment, the gear set 4 is made of powder metallurgy material, which effectively improves the matching strength of the gears and reduces the operating noise of the actuator.

[0031] Noise-absorbing fins 7 are respectively provided at positions corresponding to the motor 3 in the upper shell 1 and the lower shell 2 .

[0032] refer to Figure 6 The upper shell 1 is symmetrically provided with positioning pins 14, and the lower shell 2 is provided with a pin hole 24 at a position corresponding to the positioning pin 14. When the upper shell 1 and the lower shell 2 are buckled, the positioning pin 14 is inserted into the pin hole 24. A positioning column hole 17 is set at a position corresponding to the installation positioning column 34 on the upper shell 1, and the installation positioning column 34 can be inserted into the positioning column hole 17 when the upper shell 1 and the lower shell 2 are buckled. A first mounting hole 11 is distributed on the periphery of the upper shell 1, and a second mounting hole 21 is provided on the periphery of the lower shell 2 at a position corresponding to the first mounting hole 11. After the upper shell and the lower shell are buckled, fasteners are installed in the first mounting hole 11 and the corresponding second mounting hole 21 to connect and fix the upper shell and the lower shell. A connecting lug is distributed on the periphery of the lower shell 2, and a third connecting hole 22 is provided on the connecting lug. The actuator is mounted on the valve through a fastener provided in the third connecting hole 22.

[0033] A double-sided material groove 25 is provided at the connection between the lower shell 2 and the upper shell 1. PA66+GF30 welding materials with higher strength are used for welding, and a double-sided material groove structure is adopted, which can effectively reduce the influence of material slag. At the same time, a sealing ring and a screw fastening process are added at the connection between the lower shell 2 and the upper shell 1. On the basis of laser welding, a double redundant structure design is added to ensure the reliability of the actuator seal.

[0034] An electronic water valve comprises a valve body and two valve cores installed in the valve body, and also comprises the above-mentioned symmetrical double gear set water valve actuator structure, wherein the two gear sets 4 are respectively connected to the corresponding valve cores in a transmission manner.

[0035] Other matters not specifically described belong to the prior art and will not be described in further detail here.

[0036] The advantages of this solution are as follows: 1. The symmetrical dual-gear water valve actuator structure can satisfy the simultaneous driving of dual motors. One program controls the two motors to rotate to different positions. By controlling the different positions of the motors, the two driven valve cores can be in different required positions.

[0037] 2. A PCBA control board controls two sets of motors through Hall induction sensors. The combined logic has higher precision and more reliable performance compared to using two control boards to control two sets of motors. In addition, only one set of control systems and power supply lines are required to meet the usage of the actuator.

[0038] 3. After the upper and lower shells of this solution are buckled, they accommodate two sets of motors and two sets of gear sets, which improves the stability control of precision and makes the structure stronger and more reliable.

[0039] 3. The structure of this solution is completely symmetrical, and the structures of the double motors and double gear sets are exactly the same, resulting in obvious effects such as reducing the mold opening cost, material management cost, simple installation process, and convenient fault control.

[0040] The present invention not only solves the requirements of multi-mode drive and stable and reliable structure of the integrated water valve in the thermal management system, but also meets the requirements of commercial vehicle lightweight and the high cost-performance trend of the future market.

[0041] The above describes the preferred specific embodiments of the present invention. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention through logical analysis, reasoning, or limited experiments based on the concept of the present invention on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A symmetrical double gear set water valve actuator structure, comprising an upper housing (1) and a lower housing (2), characterized in that: The upper shell (1) and the lower shell (2) are both symmetrical structures. When the upper shell (1) and the lower shell (2) are buckled together, a mounting cavity is formed. A PCBA control board (5), two groups of motors (3) and two groups of gear sets (4) are mounted in the mounting cavity. Each of the motors (3) is transmission-connected to the gear set (4) at a corresponding position. Both groups of motors (3) are electrically connected to the PCBA control board (5). The two groups of motors (3) and the two groups of gear sets (4) are symmetrically mounted in the mounting cavity.

2. A symmetrical double gear set water valve actuator structure according to claim 1, characterized in that: The lower shell (2) comprises a lower shell body, a positioning metal bushing (51) is distributed in the lower shell body, and the PCBA control board (5) is inserted into the positioning metal bushing (51) and then fixed by plastic hot riveting and connected by soldering.

3. A symmetrical double gear set water valve actuator structure according to claim 2, characterized in that: A heat-conducting adhesive heat dissipation structure (53) is distributed at the bottom of the PCBA control board (5).

4. A symmetrical double gear set water valve actuator structure according to claim 1, characterized in that: The lower shell (2) comprises a lower shell body, and mounting positioning columns (34) are provided at positions on both sides of the PCBA control board (5) in the lower shell body; a mounting bracket (32) is provided on the motor (3), and the mounting bracket (32) can be inserted into the mounting positioning columns (34); A support structure (35) is distributed inside the lower housing body, and the motor (3) is supported on the support structure (35).

5. A symmetrical double gear set water valve actuator structure according to claim 4, characterized in that: A shaft end limiting structure (36) is provided in the lower housing body at a position close to the shaft end of the output shaft of the motor (3).

6. A symmetrical double gear set water valve actuator structure according to claim 5, characterized in that: A Hall sensor (31) is sleeved on the central axis of the motor (3), and the Hall sensor (31) is electrically connected to the PCBA control board (5).

7. The symmetrical double gear set water valve actuator structure according to claim 1, characterized in that: Noise-absorbing fins (7) are respectively provided at positions corresponding to the motor (3) in the upper shell (1) and the lower shell (2).

8. A symmetrical double gear set water valve actuator structure according to claim 7, characterized in that: The upper shell (1) is symmetrically provided with positioning pins (14), and the lower shell (2) is provided with a pin hole (24) at a position corresponding to the positioning pin (14). When the upper shell (1) and the lower shell (2) are buckled together, the positioning pin (14) is inserted into the pin hole (24).

9. The symmetrical double gear set water valve actuator structure according to claim 1, characterized in that: One of the side surfaces of the lower shell (2) is transitionally connected via a symmetrically arranged curved surface structure, and a reinforcing rib plate (23) is provided at a position outside the lower shell (2) corresponding to the curved surface structure.

10. An electronic water valve, comprising a valve body and two valve cores located in the valve body, characterized in that: It also comprises a symmetrical double gear set water valve actuator structure according to any one of claims 1 to 9, wherein the two sets of gear sets (4) are respectively connected in transmission with the corresponding valve cores.

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