Output gear assembly of water valve actuator

Abstract

The utility model provides an output gear assembly of a water valve actuator. The output gear assembly comprises a magnet, a gear ring made of metal materials and a transmission shaft made of plastic materials. The transmission shaft and the gear ring are coaxially arranged, the upper end of the transmission shaft is fixedly embedded in an inner hole of the gear ring and integrated with the gear ring in an injection molding mode, and the magnet is coaxially fixedly embedded at the upper end of the transmission shaft and integrated with the gear ring in an injection molding mode. The multi-way valve can meet the requirement of the multi-way valve for large torque of the output gear assembly, enables the magnet and the output gear assembly to be reliably fixed, and has the advantage that the magnet and the output gear assembly are convenient to fix.

Description

Technical Field

[0001] The utility model relates to the technical field of water valve actuator transmission components, in particular to an output gear component of a water valve actuator. Background Art

[0002] At present, the electric vehicle industry in my country is developing rapidly. Compared with fuel vehicles, electric vehicles have more stringent requirements for thermal management. The core of electric vehicles is a multi-way valve that controls different water flow directions, thereby controlling the temperature changes of each subsystem; the actuator used to control the operation of the multi-way valve is the core driving component, and the output gear assembly is an important transmission component in the actuator; in order to meet customers' high standards for the control accuracy of the multi-way valve actuator, a magnet is currently added to the output gear assembly. The magnet can work in conjunction with the Hall sensor to meet the high standards for the control accuracy of the multi-way valve actuator. At the same time, the output gear assembly needs to meet the multi-way valve's requirements for large torque. Metal materials are usually used to make the gears in the gear transmission assembly. In order to meet the above requirements, the current conventional method is to add a circular magnet to the output gear, and the magnet can generally only be wrapped in the process of molding with the plastic material. When a metal gear is used, it is difficult for the magnet to be fastened to the metal gear, that is, there are the disadvantages of great difficulty in fixing the magnet to the metal gear and poor fixing firmness. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an output gear assembly of a water valve actuator, which can meet the large torque requirements of the multi-way valve for the output gear assembly, and enables the magnet to be reliably fixed to the output gear assembly, while having the advantage of convenient fixing of the magnet and the output gear assembly.

[0004] The utility model provides an output gear assembly of a water valve actuator, comprising a magnet, a gear ring made of a metal material and a transmission shaft made of a plastic material; the transmission shaft and the gear ring are coaxially arranged, the upper end of the transmission shaft is embedded in the inner hole of the gear ring and is injection-molded together with the gear ring, and the magnet is coaxially embedded in the upper end of the transmission shaft and is injection-molded together with the gear ring.

[0005] After adopting the above structure, the utility model can meet the large torque requirement of the multi-way valve for the output gear assembly because the gear ring is made of metal material, and because the transmission shaft is supported by plastic material, the magnet is coaxially embedded in the upper end of the transmission shaft and is injection-molded with the gear ring, so that the magnet can be reliably fixed to the output gear assembly, and has the advantage of convenient fixing of the magnet and the output gear assembly.

[0006] In a possible implementation, a circumferential limiting structure is provided between the ring gear and the transmission shaft; by providing the circumferential limiting structure between the ring gear and the transmission shaft, slippage between the ring gear and the transmission shaft can be avoided, that is, the ring gear can reliably drive the transmission shaft to rotate.

[0007] In one possible embodiment, the circumferential limiting structure includes a plurality of tooth grooves circumferentially arranged on the inner hole of the gear ring, and convex teeth corresponding to the plurality of tooth grooves are formed on the outer wall of the upper end of the transmission shaft, and each convex tooth is embedded in the tooth groove at the corresponding position; by adopting this structure, after each convex tooth is embedded in the tooth groove at the corresponding position, the purpose of circumferential limitation can be reliably achieved between the gear ring and the transmission shaft to avoid slipping between the gear ring and the transmission shaft; in addition, the circumferential limiting structure is not limited to the structure in which the convex teeth and the tooth grooves are embedded, and any structure that can limit the circumferential rotation of the gear ring and the transmission shaft can be adopted.

[0008] In a possible embodiment, an axial limiting structure is provided between the ring gear and the transmission shaft; by providing the axial limiting structure between the ring gear and the transmission shaft, it is possible to prevent the ring gear from detaching from the transmission shaft along the axial direction of the transmission shaft, that is, it is possible to improve the reliability of the ring gear and the transmission shaft after being injection molded together.

[0009] In a possible embodiment, the axial limiting structure includes two annular ridges arranged on the outer wall of the transmission shaft, the two annular ridges are spaced apart along the axial direction of the transmission shaft, and the two annular ridges respectively abut against the gear rings at the outer edges of the upper and lower ends of the inner hole; by adopting this structure, since the two annular ridges respectively abut against the gear rings at the outer edges of the upper and lower ends of the inner hole, the gear ring can be effectively prevented from detaching from the transmission shaft along the axial direction of the transmission shaft, thereby improving the reliability of the gear ring and the transmission shaft after being injection molded into one.

[0010] In a possible embodiment, an annular boss is integrally formed at the upper end of the transmission shaft, the magnet is embedded in the annular boss and wrapped by the annular boss, and the magnet and the annular boss are injection molded as one body; by adopting this structure, the magnet can be reliably fastened to the transmission shaft and wrapped by at least a portion of the transmission shaft.

[0011] In a possible embodiment, a "cross"-shaped retaining rib is integrally formed at the opening on the upper end of the annular boss, and the upper end of the magnet abuts against the retaining rib, and the retaining rib is used to prevent the magnet from separating from the annular boss; through the setting of the retaining rib, when the magnet expands or contracts due to heat, the retaining rib can always block the magnet to prevent the magnet from separating from the annular boss.

[0012] In one possible embodiment, a plurality of open grooves are circumferentially arranged on the annular boss; by adopting this structure, when the magnet expands and contracts due to the setting of the open grooves, the annular boss can more easily deform with the thermal expansion and contraction of the magnet, that is, the annular boss can always be in a state of reliably wrapping the magnet to avoid the magnet from detaching from the annular boss. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG1 is a first three-dimensional structural schematic diagram of the utility model;

[0014] FIG2 is a second three-dimensional structural schematic diagram of the utility model;

[0015] FIG3 is a schematic diagram of a partially exploded three-dimensional structure of the present invention;

[0016] FIG4 is a schematic cross-sectional view of the utility model. DETAILED DESCRIPTION

[0017] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0018] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0019] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0020] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Referring to Figures 1-4, an embodiment of the present application discloses an output gear assembly of a water valve actuator, including a magnet 1, a gear ring 2 made of a metal material, and a transmission shaft 3 made of a plastic material; the transmission shaft 3 is coaxially arranged with the gear ring 2, the upper end of the transmission shaft 3 is embedded in the inner hole 21 of the gear ring 2 and is injection molded together with the gear ring 2, and the magnet 1 is coaxially embedded in the upper end of the transmission shaft 3 and is injection molded together with the gear ring 2.

[0022] A circumferential limiting structure is provided between the ring gear 2 and the transmission shaft 3; by providing the circumferential limiting structure between the ring gear and the transmission shaft, slippage between the ring gear and the transmission shaft can be avoided, that is, the ring gear can reliably drive the transmission shaft to rotate.

[0023] The circumferential limiting structure includes a plurality of tooth grooves 22 circumferentially arranged on the inner hole 21 of the gear ring 2, and convex teeth 31 corresponding to the plurality of tooth grooves 22 are formed on the outer wall of the upper end of the transmission shaft 3, and each convex tooth 31 is embedded in the tooth groove 22 at the corresponding position; by adopting this structure, after each convex tooth is embedded in the tooth groove at the corresponding position, the purpose of circumferential limiting can be reliably achieved between the gear ring and the transmission shaft to avoid slipping between the gear ring and the transmission shaft; in addition, the circumferential limiting structure is not limited to the structure in which the convex teeth and the tooth grooves are embedded, and any structure that can limit the circumferential rotation of the gear ring and the transmission shaft can be adopted.

[0024] An axial limiting structure is arranged between the ring gear 2 and the transmission shaft 3; by arranging the axial limiting structure between the ring gear and the transmission shaft, the ring gear can be prevented from detaching from the transmission shaft along the axial direction of the transmission shaft, that is, the reliability of the ring gear and the transmission shaft after being injection molded into one can be improved.

[0025] The axial limiting structure includes two annular ridges 32 arranged on the outer wall of the transmission shaft 3, and the two annular ridges 32 are spaced apart along the axial direction of the transmission shaft 3, and the two annular ridges 32 respectively abut against the gear ring 2 at the outer edges of the upper and lower ends of the inner hole 21; by adopting this structure, since the two annular ridges respectively abut against the gear rings at the outer edges of the upper and lower ends of the inner hole, it is possible to effectively prevent the gear ring from detaching from the transmission shaft along the axial direction of the transmission shaft, thereby improving the reliability of the gear ring and the transmission shaft after being injection molded into one.

[0026] An annular boss 33 is integrally formed at the upper end of the transmission shaft 3, and the magnet 1 is embedded in and wrapped by the annular boss 33. The magnet 1 and the annular boss 33 are injection molded as one body; by adopting this structure, the magnet can be reliably fastened to the transmission shaft and wrapped by at least a portion of the transmission shaft.

[0027] A "cross"-shaped retaining rib 34 is integrally formed at the opening at the upper end of the annular boss 33, and the upper end of the magnet 1 abuts against the retaining rib 34, which is used to prevent the magnet 1 from detaching from the annular boss 33; through the setting of the retaining rib, when the magnet expands and contracts due to heat, the retaining rib can always block the magnet to prevent the magnet from detaching from the annular boss.

[0028] A plurality of open grooves 35 are circumferentially arranged on the annular boss 33; by adopting this structure, when the magnet expands and contracts due to the opening grooves, the annular boss can deform more easily with the expansion and contraction of the magnet, that is, the annular boss can always be in a state of reliably wrapping the magnet to avoid the magnet from detaching from the annular boss.

[0029] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An output gear assembly of a water valve actuator, characterized in that: The invention comprises a magnet (1), a gear ring (2) made of a metal material, and a transmission shaft (3) made of a plastic material; the transmission shaft (3) and the gear ring (2) are coaxially arranged, the upper end of the transmission shaft (3) is embedded in an inner hole (21) of the gear ring (2) and is injection-molded integrally with the gear ring (2), and the magnet (1) is coaxially embedded in the upper end of the transmission shaft (3) and is injection-molded integrally with the gear ring (2).

2. The output gear assembly of the water valve actuator according to claim 1, characterized in that: A circumferential limiting structure is provided between the gear ring (2) and the transmission shaft (3).

3. The output gear assembly of the water valve actuator according to claim 2, characterized in that: The circumferential limiting structure comprises a plurality of tooth grooves (22) circumferentially arranged on the inner hole (21) of the gear ring (2), and convex teeth (31) corresponding to the plurality of tooth grooves (22) are formed on the outer wall of the upper end of the transmission shaft (3), and each of the convex teeth (31) is embedded in the tooth groove (22) at a corresponding position.

4. The output gear assembly of the water valve actuator according to any one of claims 1 to 3, characterized in that: An axial limiting structure is provided between the gear ring (2) and the transmission shaft (3).

5. The output gear assembly of the water valve actuator according to claim 4, characterized in that: The axial limiting structure comprises two annular convex edges (32) arranged on the outer wall of the transmission shaft (3), the two annular convex edges (32) being spaced apart along the axial direction of the transmission shaft (3), and the two annular convex edges (32) respectively abutting against the gear rings (2) at the outer edges of the upper and lower ends of the inner hole (21).

6. The output gear assembly of the water valve actuator according to claim 1, 2, 3 or 5, characterized in that: An annular boss (33) is integrally formed at the upper end of the transmission shaft (3), the magnet (1) is embedded in the annular boss (33) and is wrapped by the annular boss (33), and the magnet (1) and the annular boss (33) are injection molded integrally.

7. The output gear assembly of the water valve actuator according to claim 6, characterized in that: A "cross"-shaped retaining rib (34) is integrally formed at the opening at the upper end of the annular boss (33), the upper end of the magnet (1) abuts against the retaining rib (34), and the retaining rib (34) is used to prevent the magnet (1) from detaching from the annular boss (33).

8. The output gear assembly of the water valve actuator according to claim 7, characterized in that: The annular boss (33) is provided with a plurality of opening grooves (35) in the circumferential direction.

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