Improved miniature hydroelectric generator

Abstract

An improved miniature hydroelectric generator comprises a shell, a rotating shaft and a magnet are arranged in the shell, the magnet is fixedly arranged on the rotating shaft in a sleeving mode and can rotate along with the rotating shaft, and a coil matched with the magnet in an induction mode is wound around the outer portion of the shell. The motor is characterized in that the upper end and the lower end of the magnet are provided with an upper bearing and a lower bearing respectively, the lower bearing is arranged in a bearing seat, the bearing seat is fixedly connected with the shell, the lower bearing is provided with a blocking part which abuts against the magnet and is made of a wear-resistant material, and the blocking part enables the magnet not to make contact with the bearing seat. Compared with the prior art, the utility model has the advantages that the lower bearing is provided with the blocking part which is propped against the magnet, and the top of the blocking part is higher than the top of the bearing seat, so that the blocking part is propped against the magnet, the bearing seat is not contacted with the magnet, the rotating magnet is directly contacted with the blocking part, and the rotating magnet cannot abrade the bearing seat; therefore, the service life of the miniature hydroelectric generator is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of hydroelectric generators, in particular to an improved micro hydroelectric generator. Background Art

[0002] With the development of industry, micro hydroelectric generators are gradually being widely used. For example, in the field of bathroom products, micro hydroelectric generators are installed in faucets, and the water flow of the faucet is used to generate electricity, and the generated current is used to power other accessories. The micro hydroelectric generator in the prior art is shown in the Chinese utility model with patent number CN202223593578.1 (authorization announcement number CN219605457U) "Small fluid generator core assembly", which includes a housing, a motor and an impeller. The shaft of the motor is connected to the impeller, and the impeller is rotated by the impact of water flow, thereby driving the rotor in the motor to rotate, so that the magnetic field generated by the rotor coil is cut by the stator coil, and a voltage is generated in the stator coil, so that the micro hydroelectric generator can power the display module.

[0003] Although the above-mentioned micro-hydroelectric generator does not describe the specific structure of the generator, the generator of the micro-hydroelectric generator on the market includes a housing, a rotating shaft, a magnet, an upper bearing and a lower bearing. The bearing is generally made of ceramic or metal. The magnet is sleeved on the rotating shaft and is located between the upper bearing and the lower bearing. The upper bearing is installed in the housing, and the lower bearing is installed in the bearing seat. The material of the bearing seat is generally plastic, and the top of the bearing seat is higher than the lower bearing, which will cause the top of the bearing seat to contact with the magnet. In the actual use process, the water flow will drive the rotating shaft to rotate, thereby driving the magnet to rotate. Since the bearing seat is in contact with the magnet, the rotating magnet will rub against the lower bearing seat; if the upper bearing is not installed in place or the matching accuracy with the magnet is not enough, the housing and the magnet will also rub. Therefore, if the hydroelectric generator is used for a long time, the friction with the magnet may cause damage to the housing and the bearing seat. For this reason, further improvements need to be made to the micro-hydroelectric generator. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a micro hydroelectric generator with a reasonable structure and a prolonged service life in view of the above-mentioned existing technical status.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: the improved micro-hydro generator includes a shell, a rotating shaft and a magnet are arranged in the shell, the magnet is fixed on the rotating shaft and can rotate with the rotating shaft, and a coil that cooperates with the magnet induction is wound around the outside of the shell; it is characterized in that: the upper and lower ends of the magnet are respectively provided with an upper bearing and a lower bearing, the lower bearing is arranged in a bearing seat, the bearing seat is fixedly connected to the shell, and the lower bearing is provided with a barrier part made of wear-resistant material that abuts against the magnet, and the barrier part can prevent the magnet from contacting the bearing seat.

[0006] As a solution of the barrier part, preferably, the barrier part is a first protrusion extending upward from the upper surface of the lower bearing, and the first protrusion abuts against the magnet. The first protrusion and the lower bearing are an integral structure, and the top surface of the first protrusion is higher than the top surface of the bearing seat, so that the first protrusion abuts against the magnet, and the bearing seat does not contact the magnet.

[0007] Furthermore, the lower surface of the upper bearing extends downward to form a second protrusion, and the second protrusion abuts against the magnet. The upper bearing is installed in the housing, and the second protrusion and the upper bearing are an integrated structure, so that the second protrusion abuts against the magnet, and the housing does not contact the magnet.

[0008] As another solution of the barrier part, preferably, the barrier part is a first washer, the first washer is arranged on the upper surface of the lower bearing, and the first washer abuts against the magnet. By arranging the first washer on the lower bearing, the first washer is higher than the bearing seat, so that the first washer abuts against the magnet, and the bearing seat does not contact the magnet.

[0009] Furthermore, a second washer is provided between the upper bearing and the magnet, and the second washer abuts against the magnet. The upper bearing is installed in the housing, and the second washer is arranged below the upper bearing, so that the second washer abuts against the magnet, and the housing does not contact the magnet.

[0010] In order to prevent the bearing seat from being separated from the shell, preferably, the coil is wound in the up and down directions, so as to bundle the bearing seat and the shell together.

[0011] Furthermore, the coils are provided in two groups and are spaced apart from each other, so that the bearing seat and the housing are more stably bundled together.

[0012] In order to make the rotating shaft rotate more smoothly in the shell, preferably, a steel ball is provided at the top end of the rotating shaft, and the steel ball abuts against the shell.

[0013] Compared with the prior art, the utility model has the advantages that: by providing a barrier portion abutting against the magnet on the lower bearing, the top of the barrier portion is higher than the top of the bearing seat, so that the barrier portion abuts against the magnet, the bearing seat and the magnet do not contact, the rotating magnet directly contacts the barrier portion, the rotating magnet will not wear the bearing seat, thereby extending the service life of the micro hydro generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0015] Figure 2 It is a cross-sectional view of Example 1 of the utility model;

[0016] Figure 3 This is an exploded schematic diagram of Example 1 of the utility model;

[0017] Figure 4 It is a cross-sectional view of Example 2 of the utility model;

[0018] Figure 5 This is an exploded schematic diagram of Embodiment 2 of the present utility model; DETAILED DESCRIPTION

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] like Figures 1 to 3 Shown is Example 1 of the utility model.

[0021] like Figures 1 to 3As shown, the micro hydroelectric generator of this embodiment includes a housing 1, a rotating shaft 11 and a magnet 12 are arranged in the housing 1, the magnet 12 is sleeved and fixed on the rotating shaft 11 and can rotate with the rotating shaft 11, a coil 8 inductively matched with the magnet 12 is wound around the outside of the housing 1, and a steel ball 7 is arranged at the top of the rotating shaft 11, and the steel ball 7 abuts against the housing 1. Among them, the upper and lower ends of the magnet 12 are respectively provided with an upper bearing 2 and a lower bearing 3, the upper bearing 2 and the lower bearing 3 are made of ceramic or metal, the lower bearing 3 is arranged in a bearing seat 4, the bearing seat 4 is made of plastic, and the bearing seat 4 is fixedly connected to the housing 1, and a barrier part made of wear-resistant material abutting against the magnet 12 is provided on the lower bearing 3, and the barrier part can prevent the magnet 12 from contacting with the bearing seat 4. The barrier part in this embodiment is a first protrusion 31 formed by extending upward from the upper surface of the lower bearing 3, the top surface of the first protrusion 31 is higher than the top surface of the bearing seat 4, the first protrusion 31 abuts against the magnet 12, and the first protrusion 31 can prevent the magnet 12 from contacting with the bearing seat 4. In addition, the upper bearing 2 is installed in the housing 1, and the lower surface of the upper bearing 2 extends downward to form a second protrusion 21, which abuts against the magnet 12, and the housing 1 does not contact the magnet 12. In this embodiment, there are two groups of coils 8 and they are arranged at intervals on the left and right. The two groups of coils 8 are respectively wound in the up and down directions, so that the bearing seat 4 and the housing 1 are bundled together.

[0022] The working process of the micro hydroelectric generator in this embodiment is as follows: the impeller is rotated by the impact of water flow, and the rotating impeller rotates the rotating shaft 11, thereby driving the magnet 12 to rotate between the upper bearing 2 and the lower bearing 3, and the magnet 12 abuts and rubs against the first protrusion 31 and the second protrusion 21; through the induction cooperation between the rotating magnet 12 and the fixed coil 8, the coil 8 generates current, thereby realizing the power generation of the micro hydroelectric generator.

[0023] like Figure 4 and Figure 5 Shown is Embodiment 2 of the present utility model.

[0024] The structure and working process of this embodiment are basically the same as those of the above-mentioned embodiment. The difference between this embodiment and the structure of the embodiment lies in that the barrier part of this embodiment is different. The barrier part of this embodiment is a first washer 5, and the first washer 5 is arranged on the upper surface of the lower bearing 3. The first washer 5 is higher than the bearing seat 4, so that the first washer 5 abuts against the magnet 12, and the bearing seat 4 does not contact the magnet 12; in addition, a second washer 6 is arranged between the upper bearing 2 and the magnet 12, and the second washer 6 abuts against the magnet 12, and the housing 1 does not contact the magnet 12.

Claims

1. An improved micro hydroelectric generator, comprising a housing (1), wherein a rotating shaft (11) and a magnet (12) are arranged inside the housing (1), wherein the magnet (12) is sleeved and fixed on the rotating shaft (11) and can rotate with the rotating shaft (11), and a coil (8) inductively matched with the magnet (12) is wound around the outside of the housing (1); characterized in that: An upper bearing (2) and a lower bearing (3) are respectively provided at the upper and lower ends of the magnet (12); the lower bearing (3) is arranged in a bearing seat (4); the bearing seat (4) is fixedly connected to the housing (1); and a barrier portion made of a wear-resistant material and abutting against the magnet (12) is provided on the lower bearing (3); the barrier portion can prevent the magnet (12) from contacting the bearing seat (4).

2. The improved micro hydroelectric generator according to claim 1, characterized in that: The blocking portion is a first protrusion (31) formed by extending upward from the upper surface of the lower bearing (3), and the first protrusion (31) is in contact with the magnet (12).

3. The improved micro hydroelectric generator according to claim 2, characterized in that: A second protrusion (21) is formed by extending downwardly from the lower surface of the upper bearing (2), and the second protrusion (21) abuts against the magnet (12).

4. The improved micro hydroelectric generator according to claim 1, characterized in that: The blocking part is a first washer (5), the first washer (5) is arranged on the upper surface of the lower bearing (3), and the first washer (5) is in contact with the magnet (12).

5. The improved micro hydroelectric generator according to claim 4, characterized in that: A second washer (6) is provided between the upper bearing (2) and the magnet (12), and the second washer (6) is in contact with the magnet (12).

6. The improved micro hydroelectric generator according to claim 1, characterized in that: The coil (8) is wound in the up-down direction, thereby bundling the bearing seat (4) and the housing (1) together.

7. The improved micro hydroelectric generator according to claim 6, characterized in that: The coils (8) are provided in two groups and are spaced apart from each other.

8. The improved micro hydroelectric generator according to any one of claims 1 to 7, characterized in that: A steel ball (7) is provided at the top end of the rotating shaft (11), and the steel ball (7) abuts against the housing (1).

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