High waterproof water valve actuator

Abstract

The application relates to a high waterproof type water valve actuator in the field of valve electric actuators, which comprises a gear box main body, a valve actuating element, a circuit board and a lead-out wire, the gear box main body comprises an upper cover and a lower cover, the top end surface of the lower cover is provided with a downwardly recessed sealing groove along the outer peripheral direction of the lower cover, a sealing ring is arranged in the sealing groove, the bottom end surface of the upper cover is provided with a sealing stop edge, the sealing stop edge can be inserted into the sealing groove and press the sealing ring tightly, a wire protection seat is arranged in the upper cover, a plurality of through holes penetrating the wall thickness of the wire protection seat are formed in the wire protection seat, sealing rubber plugs are arranged in the through holes, the lead-out wire penetrates the sealing rubber plugs and is connected with the circuit board, a button is arranged on the circuit board, and a sealing cover is arranged outside the button. The high waterproof type water valve actuator improves the sealing structures of the original upper cover, lower cover, lead-out wire and button of the gear box, greatly improves the connecting strength and waterproof effect of the components, and prolongs the service life of the water valve actuator.

Description

Technical Field

[0001] This application relates to the field of electric valve actuator technology, and in particular to a highly waterproof water valve actuator, which can be widely used in medical devices, automotive electronics, home appliances, office equipment and consumer electronics, meeting the technical requirements of Industry 4.0 and the electronics industry for waterproofing and low-cost management. Background Technology

[0002] Most water valve actuator products are waterproofed mainly by waterproofing the upper and lower shells and the buttons. Common waterproofing methods include ultrasonic treatment, secondary injection molding, injection molding inserts, O-ring installation, and applying adhesive.

[0003] The existing water valve actuators are not ideally waterproof, mainly due to reasons such as: plastic deformation, misaligned waterproof surfaces, O-ring preload that is too loose or too tight, insufficient structural rigidity, uneven screw distribution, or stripped threads. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this application is to provide a highly waterproof water valve actuator, which ensures the effectiveness of the actuator by improving the original sealing structure.

[0005] To achieve the above objectives, this utility model provides a highly waterproof water valve actuator, comprising a gearbox body, a valve actuator element disposed within the gearbox body, a circuit board connected to the valve actuator element, and a lead wire connected to the circuit board. The gearbox body includes a detachably connected upper cover and a lower cover. The top surface of the lower cover has a downwardly recessed sealing groove along its outer periphery, and a sealing ring is disposed within the sealing groove. The bottom surface of the upper cover has a downwardly extending sealing flange along its outer periphery, and the sealing flange can be inserted into the sealing groove and press the sealing ring tightly. A wire guard seat is disposed within the upper cover, and the wire guard seat is correspondingly disposed above the circuit board. The wire guard seat has several through holes penetrating its wall thickness, and each through hole is provided with a sealing rubber plug. The lead wire passes through each sealing rubber plug and is connected to the circuit board. A button is disposed on the circuit board, and a sealing cover is disposed over the button.

[0006] Preferably, the upper cover and the lower cover are detachably connected by a number of screws.

[0007] To prevent individual sealing rubber plugs from loosening, the sealing rubber plugs adopt a one-piece molded structure.

[0008] To ensure the sealing of the button, the button includes an elastic part that can move up and down and an annular sealing part disposed at the bottom end of the elastic part. The annular sealing part is integrally formed with the elastic part and fits against the surface of the circuit board. The sealing cover is disposed at the top of the annular sealing part and can press the annular sealing part tightly.

[0009] To further ensure the sealing performance at the junction of the annular sealing part with the sealing cover and the circuit board, a lower sealing ring is integrally formed on the bottom end face of the annular sealing part, and an upper sealing ring is integrally formed on the top end face of the annular sealing part.

[0010] In summary, this utility model has the following beneficial effects: by improving the sealing structure of the original gearbox's upper cover, lower cover, lead wire, and corresponding button positions, the high waterproof water valve actuator greatly improves the connection strength and waterproof effect of each component, thereby increasing the service life of the water valve actuator. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the highly waterproof water valve actuator of this utility model;

[0012] Figure 2 This is a partial sectional view of the highly waterproof water valve actuator of this utility model;

[0013] Figure 3 This is a schematic diagram of the structure inside the lower cover of the highly waterproof water valve actuator of this utility model;

[0014] Figure 4 This is a schematic diagram of the structure inside the upper cover of the highly waterproof water valve actuator of this utility model;

[0015] Figure 5 This is a schematic diagram of the structure of the mating part between the upper and lower covers of this utility model;

[0016] Figure 6 This is a structural schematic diagram of the mating part of the button, sealing cover and circuit board of this utility model. Detailed Implementation

[0017] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0018] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "side", "end", etc., indicate the orientation or positional relationship 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.

[0019] like Figure 1-6 The illustrated high waterproof water valve actuator includes a gearbox body, a valve actuator element disposed within the gearbox body, a circuit board 4 connected to the valve actuator element, and a lead wire 3 connected to the circuit board 4.

[0020] Specifically, the gearbox body includes a detachably connected upper cover 1 and lower cover 2. The upper cover 1 and lower cover 2 are detachable by a number of screws 8. The top surface of the lower cover 2 has a downwardly recessed sealing groove 201 along its outer periphery. A sealing ring 5 is provided in the sealing groove 201. The bottom surface of the upper cover 1 has a downwardly extending sealing flange 101 along its outer periphery. The sealing flange 101 can be inserted into the sealing groove 201 and press the sealing ring 5 tightly. The pre-compression of the sealing ring 5 is 0.25-0.30 mm. The size H of the sealing groove 201 is 0.15-0.2 mm larger than the diameter D of the sealing ring. This structure achieves waterproofing between the upper cover 1 and the lower cover 2.

[0021] The upper cover 1 is provided with a wire protection seat 6, which is correspondingly positioned above the circuit board 4. The wire protection seat 6 has several through holes that penetrate its wall thickness. Each through hole is provided with a sealing rubber plug 7. The sealing rubber plug 7 adopts an integral molding structure. The lead wire 3 passes through each sealing rubber plug 7 and is connected to the circuit board 4. This structure achieves waterproofing between the lead wire 3 and the circuit board.

[0022] A button 9 is provided on the circuit board 4, and a sealing cover 10 is provided over the button 9. Specifically, the button 9 includes an elastic part 901 that can move up and down and an annular sealing part 902 disposed at the bottom end of the elastic part 901. The annular sealing part 902 is integrally formed with the elastic part 901. There is a certain space between the elastic part 901 and the button on the circuit board 4. When the elastic part 901 is pressed down, the elastic part 901 can trigger the button, and the annular sealing part 902 is in contact with the surface of the circuit board 4. A lower sealing ring 903 is integrally formed on the bottom end face of the annular sealing part 902. The lower sealing ring 903 achieves waterproofing between the annular sealing part 902 and the circuit board 4. The sealing cover 10 is disposed on the top end of the annular sealing part 902 and can press the annular sealing part 902 tightly. The outer ring of the annular sealing part 902 can partially wrap the sealing cover 10. An upper sealing ring 904 is integrally formed on the top end face of the annular sealing part 902. The upper sealing ring 904 achieves waterproofing between the annular sealing part 902 and the sealing cover 10.

[0023] In summary, the highly waterproof water valve actuator of this utility model improves the sealing structure of the original gearbox's upper cover, lower cover, lead wire, and corresponding button positions, greatly enhancing the connection strength and waterproof effect of each component, thereby increasing the service life of the water valve actuator.

[0024] It should be noted that the parts not covered by this utility model are the same as or can be implemented using existing technology.

[0025] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "set up," "equipped with," etc., 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.

[0026] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape, principle and application direction of this application should be covered within the scope of protection of this application.

Claims

1. A highly waterproof water valve actuator, comprising a gearbox body, a valve actuator element disposed within the gearbox body, a circuit board connected to the valve actuator element, and lead wires connected to the circuit board, characterized in that: The gearbox body includes a detachably connected upper cover and a lower cover. The top surface of the lower cover has a downwardly recessed sealing groove along its outer periphery, and a sealing ring is provided in the sealing groove. The bottom surface of the upper cover has a downwardly extending sealing flange along its outer periphery. The sealing flange can be inserted into the sealing groove and press the sealing ring tightly. A wire guard is provided inside the upper cover. The wire guard is correspondingly located above the circuit board. The wire guard has several through holes that penetrate its wall thickness. Each through hole is provided with a sealing rubber plug. The lead wire passes through each sealing rubber plug and is connected to the circuit board. A button is provided on the circuit board, and a sealing cover is provided on the button.

2. The highly waterproof water valve actuator according to claim 1, characterized in that: The upper cover and the lower cover are detachably connected by several screws.

3. The highly waterproof water valve actuator according to claim 1, characterized in that: The sealing rubber plug has a one-piece molded structure.

4. The highly waterproof water valve actuator according to claim 1, characterized in that: The button includes an elastic part that can move up and down and an annular sealing part disposed at the bottom end of the elastic part. The annular sealing part is integrally formed with the elastic part and fits against the surface of the circuit board. The sealing cover is disposed at the top of the annular sealing part and can press the annular sealing part tightly.

5. The highly waterproof water valve actuator according to claim 4, characterized in that: The bottom end face of the annular sealing part is integrally formed with a lower sealing ring, and the top end face of the annular sealing part is integrally formed with an upper sealing ring.

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