A magnetic rotor assembly for a water flow sensor

Abstract

A magnetic rotor assembly for a water flow sensor includes a housing, a magnetic rotor, and an end seat. The housing includes a housing shaft seat and radial ribs at one end, and a radial latch hole on the inner wall at one end. The housing shaft seat has a housing shaft hole open at one end. The magnetic rotor includes a rotating shaft and an impeller with a pre-embedded magnet. The end seat is hollow with openings at both ends and includes a seat shaft seat, radial ribs, and latches on the outer circumferential surface. The seat shaft seat has a seat shaft hole open at one end. The end seat is embedded in the housing, with the latches engaging with the radial latch holes. One end of the rotating shaft engages with the housing shaft hole, and the other end engages with the seat shaft hole. The end seat is concealed within the housing to prevent accidental loosening. During assembly, the end seat can be directly inserted into the housing, making assembly convenient.

Description

Technical Field

[0001] This utility model relates to water flow sensors, and more particularly to a magnetic rotor assembly for a water flow sensor. Background Technology

[0002] The existing technology, Chinese patent 201820689252.3, describes a water flow sensor, including a hollow housing, a Hall sensor, and a rotor assembly. The housing has an inlet and an outlet at both ends. The Hall sensor is fitted onto the outer wall of the housing, and the rotor assembly is located inside the housing. The rotor assembly includes a magnetic ring, an impeller rotor, a rotor support, and a rotor housing. The rotor support is fixed inside the housing, the first end of the impeller rotor is inserted into the rotor support, the rotor housing is fitted onto the impeller rotor, and the magnetic ring is fitted between the rotor housing and the impeller rotor and rotates with the impeller rotor. The magnetic ring and the Hall sensor are positioned at the same horizontal height. The problem is that the rotor support is exposed, posing a potential risk of insecure fixing. Utility Model Content

[0003] The purpose of this invention is to provide a magnetic rotor assembly for a water flow sensor, which features a hidden end cap, secure fixing, and convenient assembly.

[0004] This invention is implemented as follows: a magnetic rotor assembly for a water flow sensor, characterized in that it includes a housing, a magnetic rotor, and an end base.

[0005] The housing includes a housing shaft seat at one end, radial ribs, and a radial latch hole on the inner wall at one end. The housing shaft seat has a housing shaft hole that is open at one end.

[0006] The magnetic rotor includes a rotating shaft and an impeller with embedded magnets;

[0007] The end seat is hollow with openings at both ends, and includes a seat shaft seat, a seat radial rib, and a latch on the outer circumferential surface. The seat shaft seat has a seat shaft hole with one end open.

[0008] The end seat is embedded in the housing, the latch engages with the radial latch hole, one end of the rotating shaft engages with the housing shaft hole, and the other end engages with the seat shaft hole.

[0009] The magnetic rotor assembly of the water flow sensor is characterized in that: the end seat is provided with an axial guide groove, which is connected to a radial latch hole.

[0010] The magnetic rotor assembly of the water flow sensor is characterized in that the cross-section of the latch is an inverted right-angled trapezoid.

[0011] The waist surface of the latch slides into the radial latch hole with the axial guide groove.

[0012] The magnetic rotor assembly of the water flow sensor is characterized in that: the closed end of the housing shaft hole is provided with a housing shaft head with a spherical curved surface, and the closed end of the seat shaft hole is provided with a cover shaft head with a spherical curved surface.

[0013] The two ends of the rotating shaft are spherical curved surfaces; the two ends of the rotating shaft are respectively matched with the shell shaft head and the cover shaft head.

[0014] The magnetic rotor assembly of the water flow sensor is characterized in that the distance between the shell shaft head and the cover shaft head is greater than the length of the rotating shaft.

[0015] The magnetic rotor assembly of the water flow sensor is characterized in that the bearing seat extends from the cover seat.

[0016] The magnetic rotor assembly of the water flow sensor is characterized in that: the seat shaft and the seat radial rib are located inside one end of the end seat, and the other end forms a rectification and noise reduction cavity.

[0017] This utility model discloses a magnetic rotor assembly for a water flow sensor. The end seat is hidden inside the housing to prevent accidental loosening. During assembly, the end seat can be directly inserted into the housing, making assembly convenient. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the present invention.

[0019] Figure 2 This is a perspective view of the present invention.

[0020] Figure 3 This is one of the exploded perspective views of this utility model.

[0021] Figure 4 This is the second exploded perspective view of this utility model.

[0022] Figure 5 This is the third exploded perspective view of this utility model. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] 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 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.

[0025] like Figure 1 , Figure 2 , Figure 3 As shown, a magnetic rotor 2 assembly for a water flow sensor includes a housing 1, a magnetic rotor 2, and an end base 3.

[0026] The housing 1 includes a housing shaft seat 11 and a housing radial rib 12 at one end, and a radial latch hole 13 on the inner wall at one end. The housing radial rib 12 is connected to the housing shaft seat 11 and the inner wall of the housing 1. The housing shaft seat 11 and the inner wall of the housing between two adjacent housing radial ribs 12 form an axial water inlet hole. The housing shaft seat 11 is provided with a housing shaft hole 111 with one end open. In this embodiment, there are four housing radial ribs.

[0027] The magnetic rotor 2 includes a rotating shaft 21 and an impeller 22 with embedded magnets. The rotating shaft 21 is made of a metal material, such as stainless steel; the impeller 22 is made of plastic.

[0028] The end seat 3 is a hollow cylindrical shape with openings at both ends, including a seat shaft seat 31, a seat radial rib 32 and a latch 33 provided on the outer circumferential surface. The seat shaft seat 31 is provided with a seat shaft hole 311 with one end open.

[0029] The end seat 3 is embedded in the housing 1, and the latch 33 is engaged with the radial latch hole 13. One end of the rotating shaft 21 is engaged with the housing shaft hole 111, and the other end is engaged with the seat shaft hole 311. With this design, the end seat 3 is hidden inside the housing 1 to prevent the end seat 3 from coming loose. During assembly, the latch 33 and the radial latch hole 13 can be engaged simply by inserting the end seat into the housing.

[0030] As a further improvement of this utility model: the latch 33 and the radial latch hole 13 are arc-shaped;

[0031] The end seat 3 is provided with an axial guide groove 131, and the lower end of the axial guide groove 131 is connected to the radial latch hole 13.

[0032] The cross-section of the latch 33 is an inverted right-angled trapezoid.

[0033] The waist surface of the latch 33 slides into the radial latch hole 13 through the axial guide groove 131.

[0034] As a further improvement of this utility model: the shell shaft hole 111 is closed with a shell shaft head 112 with a spherical curved surface, and the seat shaft hole 311 is closed with a cover shaft head 312 with a spherical curved surface.

[0035] The two ends of the rotating shaft 21 are spherical curved surfaces; the two ends of the rotating shaft 21 are respectively engaged with the shell shaft head 112 and the cover shaft head 312. This structure effectively prevents water impurities from entering the shell shaft hole and the seat shaft hole, thus preventing the rotating shaft from jamming.

[0036] As a further improvement of this utility model, the distance between the shell shaft head 112 and the cover shaft head 312 is greater than the length of the rotating shaft 21. With this structure, water enters from one end of the shell and flows out from the cover seat at the other end. The change in water pressure causes the magnetic rotor to move, expelling impurities from the shell shaft hole and the cover shaft hole, thus preventing shaft jamming.

[0037] The bearing seat 31 extends from the cover seat 3.

[0038] As a further improvement of this utility model: the seat shaft seat 31 and the seat radial rib 32 are provided in one end of the end seat 3, and the other end forms a rectification and noise reduction cavity 34.

[0039] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A magnetic rotor assembly for a water flow sensor, characterized in that: Includes housing, magnetic rotor, and end mount. The housing includes a housing shaft seat at one end, radial ribs, and a radial latch hole on the inner wall at one end. The housing shaft seat has a housing shaft hole that is open at one end. The magnetic rotor includes a rotating shaft and an impeller with embedded magnets; The end seat is hollow with openings at both ends, and includes a seat shaft seat, a seat radial rib, and a latch on the outer circumferential surface. The seat shaft seat has a seat shaft hole with one end open. The end seat is embedded in the housing, the latch engages with the radial latch hole, one end of the rotating shaft engages with the housing shaft hole, and the other end engages with the seat shaft hole.

2. The magnetic rotor assembly of a water flow sensor according to claim 1, characterized in that: The latch and the radial latch hole are respectively arc-shaped; The end seat is provided with an axial guide groove, which is connected to a radial latch hole.

3. The magnetic rotor assembly of a water flow sensor according to claim 2, characterized in that: The cross-section of the latch is an inverted right-angled trapezoid. The waist surface of the latch slides into the radial latch hole with the axial guide groove.

4. The magnetic rotor assembly of a water flow sensor according to claim 1, characterized in that: The housing shaft hole is closed with a housing shaft head having a spherical curved surface, and the seat shaft hole is closed with a cover shaft head having a spherical curved surface. The two ends of the rotating shaft are spherical curved surfaces; the two ends of the rotating shaft are respectively matched with the shell shaft head and the cover shaft head.

5. The magnetic rotor assembly of a water flow sensor according to claim 4, characterized in that: The distance between the shell shaft head and the cover shaft head is greater than the length of the rotating shaft.

6. The magnetic rotor assembly of a water flow sensor according to claim 1, characterized in that: The bearing seat extends from the cover seat.

7. A magnetic rotor assembly for a water flow sensor according to claim 1, 2, 3, 4, 5, or 6, characterized in that: The seat shaft and the seat radial rib are located inside one end of the end seat, and the other end forms a rectification and noise reduction cavity.

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