Hall sensor matching type output gear, actuator and electronic water valve applying Hall sensor matching type output gear and actuator

Abstract

The utility model discloses a Hall sensor matching type output gear, an actuator and an electronic water valve using the same, and relates to the technical field of electronic water pumps and parts thereof, the Hall sensor matching type output gear comprises a gear body and a permanent magnet, and the gear body and the permanent magnet are fixed into a whole in an integral injection molding mode. The utility model mainly solves the problem of how to provide a Hall sensor matched output gear which is stable and reliable in structure and low in assembly cost for an actuator of an electronic water valve. According to the Hall sensor matched type output gear, the actuator and the electronic water valve, the manual assembly process of the permanent magnet is omitted, so that the overall assembly cost of the actuator and the electronic water valve is effectively saved, in addition, the problems of displacement and falling of the permanent magnet are effectively solved, and the Hall sensor matched type output gear, the actuator and the electronic water valve applying the Hall sensor matched type output gear are convenient to use. And the device has higher reliability, maintenance-free performance and long service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic water valve and its spare part technical field, concretely is a kind of hall sensor supporting type output gear, actuator and the electronic water valve of applying it. BACKGROUND

[0002] Hall sensor is a kind of commonly used sensor, it can change the change of magnetic field into the change of output voltage, and output to host computer.

[0003] Electronic water valve (for example, stop valve, three-way valve, four-way valve and multi-way valve etc.) can change one or several liquid medium flow passage opening / closing, communication relationship and liquid medium flow direction, it is one of indispensable spare parts in the liquid medium flow passage of various heat management systems, energy application systems and heating and ventilation systems;China utility model announcement text with the name of "a kind of automobile medium flow control electronic water valve" with the announcement number CN217762197U, typical electronic water valve structure is disclosed.

[0004] Actuator is one of important spare parts of electronic water valve, it is used to drive the valve core rotation of electronic water valve, to realize the basic function of electronic water valve changing liquid medium flow passage opening / closing, communication relationship and liquid medium flow direction.

[0005] When hall sensor is applied in the actuator of electronic water valve, the rotation angle, rotation position and speed of transmission component or output component of actuator can be detected, to provide feedback basis for the accurate control of electronic water valve.

[0006] As shown in Figure 1 And Figure 2 A kind of actuator, permanent magnet 10 is embedded in output gear 20, to be detection spare part of hall sensor, i.e., when output gear 20 rotates, permanent magnet 10 also rotates along with it, and the change of magnetic field is generated, hall sensor carried on circuit board can change the change of magnetic field into the change of output voltage, and output to host computer;However, the output gear 20 described above is fixed by sticking permanent magnet 10 in its embedding slot by adhesive, not only consumes more assembly cost, and there is the risk of permanent magnet 10 falling off.

[0007] In summary, how to provide stable and reliable structure, low assembly cost hall sensor supporting type output gear for the actuator of electronic water valve becomes a problem to be solved urgently. Utility model content

[0008] The utility model aims at providing a kind of hall sensor supporting type output gear, actuator and the electronic water valve of applying it, it has the characteristics of stable and reliable structure, low assembly cost.

[0009] To achieve the above object, the utility model provides following technical scheme: a hall sensor matched type output gear, including gear body and permanent magnet, gear body is fixed as an organic whole with permanent magnet through the mode of integrative injection moulding.

[0010] In the above technical scheme, the gear body includes a gear shaft, and a gear body arranged around the gear shaft in the circumferential direction, one end of the gear shaft is a sensing end, and the permanent magnet is embedded and fixed in the sensing end of the gear shaft.

[0011] In the above technical scheme, the sensing end of the gear shaft is formed with a permanent magnet embedding groove, the inner wall of the permanent magnet embedding groove extends to the inside along the radial direction to form a plurality of retaining ribs, the retaining ribs clamp the side surface of the permanent magnet along the circumferential direction, and the end part of the retaining rib further extends to the inside along the radial direction to form a plurality of clamping claws, and the clamping claws clamp the end surface of the permanent magnet in the axial direction.

[0012] In the above technical scheme, the extension length of the clamping claw of the gear shaft along the radial direction is L, the radius of the permanent magnet is R, and L: R = 0.1-0.2.

[0013] In the above technical scheme, the other end of the gear shaft relative to the sensing end is a connecting end, and the connecting end is adapted to be connected with a shaft-shaped part.

[0014] In the above technical scheme, the side surface of the gear body is provided with a plurality of gear teeth along the circumferential direction.

[0015] An actuator comprising the above-mentioned hall sensor matched type output gear.

[0016] An electronic water valve comprising the above-mentioned actuator.

[0017] Compared with the prior art, the utility model has the advantages that: the hall sensor matched type output gear, the actuator and the electronic water valve of the utility model, the gear body is fixed as an organic whole with the permanent magnet through the mode of integrative injection moulding, the manual assembly process of the permanent magnet is avoided, thereby effectively saving the overall assembly cost of the actuator and the electronic water valve, in addition, since the gear body is fixed as an organic whole with the permanent magnet through the mode of integrative injection moulding, the problems of displacement and falling off of the permanent magnet are effectively avoided, the hall sensor matched type output gear, the actuator and the electronic water valve of the utility model have higher reliability, maintenance-free performance and service life. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural view of the hall sensor matched type output gear in the prior art.

[0019] Figure 2 A cross-sectional view of the Hall sensor matching type output gear in the prior art.

[0020] Figure 3 A structure view of the Hall sensor matching type output gear in the utility model.

[0021] Figure 4 A structure view of the Hall sensor matching type output gear in the utility model.

[0022] Figure 5 A cross-sectional view of the Hall sensor matching type output gear in the utility model.

[0023] The figure mark is: 10, permanent magnet; 20, output gear; 1, gear shaft; 11, connecting end; 12, sensing end; 121, permanent magnet embedding groove; 122, retaining rib; 123, claw; 2, gear body; 21, gear tooth; 3, permanent magnet. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] The embodiment provides a Hall sensor matching type output gear, which can be applied to various driving devices / transmission devices (such as gearboxes, gear transmission mechanisms and actuators, especially the actuators of electronic water valves), is used as the output gear of the driving device / transmission device, and can generate a magnetic field change that can be detected by a Hall sensor when rotating.

[0026] Please refer to Figures 3-5 The Hall sensor matching type output gear of the embodiment comprises a gear body and a permanent magnet 3.

[0027] The gear body is an integrally injection molded engineering plastic component and is used for transmitting power; the permanent magnet 3 is a cylindrical granular body and has permanent magnetism.

[0028] In order to realize reliable fixing between the permanent magnet 3 and the gear body, the gear body is fixed integrally with the permanent magnet 3 by integrally injection molding.

[0029] Specifically, the gear body includes a gear shaft 1 and a gear body 2 arranged around the gear shaft 1 in the circumferential direction, wherein the gear shaft 1 is a shaft-shaped body and the gear body 2 is a disc-shaped body; one end of the gear shaft 1 is a sensing end 12, and a permanent magnet 3 is embedded and fixed in the sensing end 12 of the gear shaft 1.

[0030] It should be noted that the side surface of the gear body 2 is provided with a number of gear teeth 21 in the circumferential direction, so as to engage with other gears through the gear teeth 21.

[0031] More specifically, a permanent magnet groove 121 is formed at the sensing end 12 of the gear shaft 1, that is, the permanent magnet groove 121 is a groove-shaped structure integrally formed on the end face of the sensing end 12 of the gear shaft 1; the inner wall of the permanent magnet groove 121 extends inward along its radial direction to form a plurality of retaining ribs 122, that is, the retaining ribs 122 are a plurality of rib-shaped structures integrally formed in the permanent magnet groove 121, and the retaining ribs 122 clamp the side of the permanent magnet 3 in the circumferential direction; and the ends of the retaining ribs 122 further extend inward along the radial direction to form a plurality of claws 123, that is, the claws 123 are protruding structures integrally formed on the ends of each retaining rib 122, and the claws 123 clamp the end face of the permanent magnet 3 in the axial direction.

[0032] In this manner, both circumferential and axial fixation of the permanent magnet 3 are achieved, so that the permanent magnet 3 can be reliably fixed in the permanent magnet slot 121 of the gear shaft 1.

[0033] like Figure 5 As shown, the extension length of the pawl 123 of the gear shaft 1 in the radial direction is L, and the radius of the permanent magnet 3 is R, so L:R = 0.1~0.2; preferably, in this embodiment, L:R = 0.15; configuring the extension length L of the pawl 123 in this ratio will not excessively affect the weight and dynamic balance performance of the gear body, and will also reliably fix the permanent magnet 3.

[0034] Furthermore, the other end of the gear shaft 1 relative to the sensing end 12 is a connecting end 11, which is adapted to be connected with a shaft-shaped component. In this embodiment, the connecting end 11 of the gear shaft 1 is configured as a spline groove, so that the connecting end 11 is adapted to be connected with a rotating shaft with a spline (especially the rotating shaft at the valve core of an electronic water valve).

[0035] The Hall sensor matched output gear of the embodiment is applied to various driving devices / transmission devices (for example, gearboxes, gear transmission mechanisms and actuators, especially the actuator of an electronic water valve), and through the gear teeth 21 of the gear body 2, power is obtained through gear transmission cooperation with other gears, and through the connecting end 11 of the gear shaft 1, power is output to the shaft-shaped parts (especially the rotating shaft at the valve core of the electronic water valve). In the above process, the permanent magnet 3 rotates with the gear body, that is, the magnetic field change that can be detected by the Hall sensor is generated, so that the Hall sensor can detect the rotation angle, rotation position and rotation speed and other parameters of the gear body.

[0036] The embodiment also provides an actuator comprising the Hall sensor matched output gear.

[0037] The embodiment also provides an electronic water valve comprising the actuator.

[0038] The Hall sensor matched output gear, the actuator and the electronic water valve of the embodiment have the following advantages: the gear body is fixed with the permanent magnet 3 by the integral injection molding mode, so that the manual assembly process of the permanent magnet 3 is avoided, thereby effectively saving the overall assembly cost of the actuator and the electronic water valve; in addition, since the gear body is fixed with the permanent magnet 3 by the integral injection molding mode, the problems of displacement and falling of the permanent magnet 3 are effectively avoided, so that the Hall sensor matched output gear, the actuator and the electronic water valve of the embodiment have higher reliability, maintenance-free performance and service life.

[0039] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A Hall sensor matching type output gear, comprising a gear body and a permanent magnet; characterized in that, the gear body is fixed integrally with the permanent magnet by means of integral injection molding; the gear body comprises a gear shaft and a gear body arranged around the gear shaft in the circumferential direction; one end of the gear shaft is a sensing end, and the permanent magnet is embedded and fixed in the sensing end of the gear shaft; a permanent magnet embedding groove is formed at the sensing end of the gear shaft; the inner wall of the permanent magnet embedding groove extends inward in the radial direction to form a plurality of retaining ribs, and the retaining ribs clamp the side surface of the permanent magnet in the circumferential direction; and the end of the retaining rib further extends inward in the radial direction to form a plurality of clamping claws, and the clamping claws clamp the end surface of the permanent magnet in the axial direction.

2. The Hall sensor kit output gear according to claim 1, characterized by, The extension length of the clamping claw of the gear shaft in the radial direction is L; the radius of the permanent magnet is R; then L:R=0.1-0.

2.

3. The Hall sensor kit output gear according to claim 1, characterized by, The other end of the gear shaft relative to the sensing end is a connecting end; the connecting end is adapted to be connected with a shaft-shaped component.

4. The Hall sensor kit output gear according to claim 1, characterized by, The side surface of the gear body is provided with a plurality of gear teeth in the circumferential direction.

5. An actuator, characterized by The Hall sensor matching type output gear according to any one of claims 1-4.

6. An electronic water valve characterized by, The actuator according to claim 5.

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