An electric propeller

Abstract

The present invention discloses an electric propeller, comprising an upper shell (1) and a lower shell (3) in the form of a sheet, a motor shell (2) arranged between the upper and lower shells (1, 3), a motor (4) arranged in the motor shell (2), and a propeller (5) arranged on one side of the motor shell (2); wherein the upper and lower shells (1, 3) are arranged vertically one above the other, and the upper and lower shells (1, 3) are connected as a whole through the motor shell (2); the propeller (5) is connected to the output shaft of the motor (4) in a transmission manner so as to be able to rotate. By arranging the motor and the propeller, the motor drives the propeller to rotate, the propeller acts on the water flow, and the water flow reacts on the electric propeller to give the electric propeller a forward thrust, and the upper shell and the lower shell are in the form of a sheet, so that the electric propeller is subjected to less fluid resistance.

Description

Technical Field

[0001] The present invention relates to the technical field of propellers, and in particular to an electric propeller. Background Art

[0002] An electric propeller is a power propulsion device that can be installed on the bottom of a sailboat, water ski, etc., for example, to provide forward propulsion. With the improvement of living standards, people have higher and higher requirements for electric propellers, such as new requirements for fluid resistance.

[0003] Therefore, in order to meet market needs, it is necessary to design a new type of electric propulsion. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an electric propeller with smaller fluid resistance in view of the current status of the prior art.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: an electric propeller, characterized in that:

[0006] An upper shell and a lower shell in the form of a sheet, a motor shell arranged between the upper and lower shells, a motor arranged in the motor shell, and a propeller arranged on one side of the motor shell;

[0007] The upper and lower shells are vertically arranged one above the other, and the upper and lower shells are connected as a whole through the motor shell;

[0008] The propeller is connected to the output shaft of the motor and can rotate.

[0009] The motor housing can have a variety of shapes. Preferably, the axis of the motor housing is parallel to the width direction of the upper and lower shells of the sheet, the head of the motor housing is bullet-shaped and faces forward, and the propeller is located at the rear side of the tail of the motor housing. In this way, the overall structure of the electric propeller is more reasonable.

[0010] In order to further reduce the resistance, the front side edges of the upper shell and the lower shell are tilted backwards, and the upper and lower shells are fin-shaped as a whole, so that the upper shell and the lower shell are subjected to less water flow resistance.

[0011] In order to further reduce the resistance, the middle outer wall of the motor housing has a step portion in the front-to-back direction;

[0012] In the front-to-back direction, the thickness of the upper shell gradually decreases from the middle position toward the front, and the front shell wall of the upper shell has a smooth transition. In this way, the water flow resistance of the upper shell and the motor shell is small.

[0013] In order to effectively adjust the angle when the electric propeller deviates, a deviation fine-tuning device is further provided at the rear edge of the lower shell body, and the deviation fine-tuning device can swing relative to the lower shell body along the thickness direction thereof.

[0014] There are many ways to install the running deviation fine-tuner and the lower housing. Preferably, a connecting plate is extended from the lower housing to the rear side, and the running deviation fine-tuner is fixed to the connecting plate by screws extending up and down. When installing, first loosen the screws, manually move the running deviation fine-tuner to the required position, and then tighten the screws to fix the position of the running deviation fine-tuner relative to the connecting plate.

[0015] In order to facilitate positioning when installing the running deviation fine-tuner, the front part of the running deviation fine-tuner has a slot that is plugged into the rear end of the connecting plate, and the bottom of the slot and the rear end of the connecting plate are both arc-shaped. By providing the slot, when installing, the running deviation fine-tuner is first plugged into the connecting plate, which is convenient for positioning, and then the running deviation fine-tuner and the connecting plate are fixed by screws.

[0016] In order to reduce the water flow resistance, the tail of the deviation fine-tuning device gradually extends from the front to the back in the direction away from the axis of the motor housing, so that the water flow resistance of the deviation fine-tuning device can be reduced.

[0017] In order to protect the propeller, a protective cover is also included which is arranged on the outer periphery of the propeller, and the protective cover is respectively connected to the rear side of the upper shell and the rear side of the lower shell, and the protective cover is penetrated in the front-to-back direction, so that the debris in the water flow is not easy to enter the protective cover and interfere with the rotation of the propeller.

[0018] In order to reduce the resistance, the rear side of the propeller is provided with a connector exposed from the protective cover, and the connector has a bullet-shaped tail. By providing the connector, the connector has a bullet-shaped tail, so that the water flow resistance of the connector can be reduced.

[0019] In order to facilitate the installation of the electric propeller on the external sailboat or the external water skateboard, a base is provided at the bottom of the lower housing, and the base has a slot for plugging and matching with the bottom of the external sailboat or the external water skateboard. By providing the slot, the electric propeller is conveniently connected to the external sailboat or the external water skateboard.

[0020] In order to control the operation of the motor, a circuit board electrically connected to the motor is arranged in the lower housing, and a wire hole is opened between the lower housing and the motor housing to connect the two, and the motor and the circuit board are electrically connected through a wire passing through the wire hole. In this way, the operation of the motor can be controlled by the circuit board, and the space in the lower housing can be fully utilized.

[0021] Compared with the prior art, the advantages of the present invention are: by setting a motor and a propeller, the motor drives the propeller to rotate, the propeller acts on the water flow, the water flow reacts on the electric propeller to give the electric propeller a forward thrust, so that the electric propeller moves forward; the upper shell and the lower shell are in the form of sheets, so that the electric propeller is subject to less fluid resistance; the electric propeller has a simple and reasonable structure and is easy to produce; the design of the present invention is applicable to a variety of SUP paddle boards, fish fins with built-in integrated circuit boards and variable frequency motors on the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional schematic diagram of an electric propeller according to a first embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the assembly of the upper housing, part of the motor housing, and part of the lower housing in the first embodiment of the present invention;

[0024] Figure 3 It is a schematic diagram of the assembly of the upper housing, part of the motor housing, and part of the lower housing at another angle in the first embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the assembly of the upper housing, part of the motor housing, the lower housing, the propeller, and the connector in the first embodiment of the present invention;

[0026] Figure 5 A bottom view of the electric propeller according to the first embodiment of the present invention;

[0027] Figure 6 is an exploded view of the electric propeller according to the first embodiment of the present invention;

[0028] Figure 7 is a three-dimensional schematic diagram of an electric propeller according to a second embodiment of the present invention;

[0029] Figure 8 for Figure 7 A three-dimensional schematic diagram of the mid-track fine-tuner. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below with reference to the accompanying drawings.

[0031] like Figure 1 to Figure 6 FIG. 1 is a preferred embodiment of the electric propeller of the present invention.

[0032] The electric propeller includes an upper shell 1 and a lower shell 3 in the form of sheets, a motor shell 2 arranged between the upper and lower shells 1 and 3, a motor 4 arranged in the motor shell 2, a propeller 5 arranged on one side of the motor shell 2, and also includes a protective cover 7, a connector 8, and a base 100.

[0033] The upper and lower shells 1, 3 are vertically arranged one above the other, and the upper and lower shells 1, 3 are connected as a whole through the motor housing 2. The front side edges of the upper shell 1 and the lower shell 3 are tilted backwards, and the upper and lower shells 1, 3 are fin-shaped as a whole, so that the upper shell 1 and the lower shell 3 are subject to less resistance from the water flow. In the front-to-back direction, the thickness of the upper shell 1 gradually decreases from the middle position to the front, that is, the front side of the upper shell 1 is thinner and the middle part is thicker, and the front outer wall of the upper shell 1 has a smooth transition, that is, the front outer wall of the upper shell 1 is relatively smooth. The surface of the lower shell 3 has a plurality of ribs 33 extending front and back, and all the ribs 33 are arranged at intervals in the up-down direction.

[0034] The motor housing 2 is generally in the shape of an egg. The middle outer wall of the motor housing 2 has a step portion 23 in the front-to-back direction; in the thickness direction, the middle of the motor housing 2 protrudes from the upper housing 1 and the lower housing 3. The axis of the motor housing 2 is parallel to the width direction of the upper and lower housings 1, 3, and the head of the motor housing 2 is in the shape of a bullet head and faces forward. In order to facilitate the installation of the motor 4, the motor housing 2 includes a front half housing 21 and a rear half housing 22 that can be sealed with each other, so that the sealing is better, that is, the front half housing 21 is in the shape of a bullet head, and the front half housing 21 is snap-fitted with the lower housing 3.

[0035] Preferably, the motor 4 is a waterproof motor, so that when water enters the motor housing 2, the motor 4 can still operate normally.

[0036] The propeller 5 is connected to the output shaft of the motor 4 by a transmission shaft so as to be rotatable. The propeller 5 is located at the rear side of the tail of the motor housing 2.

[0037] The protective cover 7 is arranged on the outer periphery of the propeller 5, and is connected to the rear side of the upper shell 1 and the rear side of the lower shell 3 respectively, specifically by snap-fitting, and the protective cover 7 passes through in the front-to-back direction. The protective cover 7 is plug-fitted with the rear side of the upper shell 1 and the rear side of the lower shell 3 respectively, so that the protective cover 7 is easy to disassemble and assemble.

[0038] The connector 8 is arranged at the rear side of the propeller 5 and exposed from the protective cover 7. The connector 8 has a bullet-shaped tail, so that the water flow resistance is small.

[0039] In order to make full use of the space in the lower housing 3, see Figure 2 , Figure 3 The circuit board 9 is arranged in the lower housing 3 and is electrically connected to the motor 4. A wire hole 32 ( Figure 4), the motor 4 and the circuit board 9 are electrically connected through a wire (not shown) passing through the wire hole 32. A heat sink aluminum sheet 600 that fits the circuit board 9 and a thermal conductive silicone 500 connected to the heat sink aluminum sheet 600 are also provided in the lower housing 3. The heat sink aluminum sheet 100 and the thermal conductive silicone 500 are provided to facilitate heat dissipation of the circuit board 9. In order to export data, the circuit board 9 is connected to the connector 400 through the connecting wire 300, and the data is exported out through the connector 400.

[0040] The base 100 is disposed at the bottom of the lower housing 3. Preferably, the base 100 is snap-fitted with the lower housing 3 for easy assembly and disassembly. The base 100 has a slot 101 ( Figure 5 ). Preferably, the base 100 includes a first base body 102 and a second base body 103 connected to each other, and the positions of the first base body 102 and the second base body 103 can be interchanged, so as to adapt to various SUP paddle boards on the market.

[0041] The principle and use process of the electric thruster are as follows.

[0042] The slot 101 on the base 100 is plugged into and matched with the external sailboat or the external water skateboard, so that the electric propeller is installed on the external sailboat or the external water skateboard. The motor 4 drives the propeller 5 to rotate, and the propeller 5 acts on the water flow, and the water flow reacts on the electric propeller to give the electric propeller a forward thrust. Because the upper shell 1 and the lower shell 3 are in the form of sheets, and the front sides of the upper and lower shells 1, 3 are thinner, the head of the motor shell 2 is in the shape of a bullet, and the surface of the lower shell 3 has a plurality of convex ribs 33 extending forward and backward, the electric propeller is subject to less water flow resistance. The electric propeller has a simple structure and is easy to produce.

[0043] Embodiment 2:

[0044] like Figure 7-Figure 8 FIG. 2 shows another preferred embodiment of the electric propeller of the present invention.

[0045] The structure of the electric propeller of the second embodiment is basically the same as that of the electric propeller of the first embodiment, except that: a running deviation fine-tuner 6 is added, and the running deviation fine-tuner 6 can swing relative to the lower housing 3 along its thickness direction. The running deviation fine-tuner 6 is arranged at the rear edge of the lower housing 3. Specifically, a connecting plate 31 is extended to the rear side of the lower housing 3, and the running deviation fine-tuner 6 is fixed on the connecting plate 31 by screws 200 extending up and down. In order to facilitate positioning during installation, the front part of the running deviation fine-tuner 6 has a slot 61 that is plugged into the connecting plate 31, and the bottom of the slot 61 and the rear end of the connecting plate 31 are both arc-shaped. The tail of the running deviation fine-tuner 6 gradually extends from front to back in the direction away from the axis of the motor housing 2. Specifically, the upper edge 62 of the tail of the running deviation fine-tuner 6 first extends upward, then downward, and then upward from front to back, and the lower edge 63 of the tail of the running deviation fine-tuner 6 first extends downward and then upward from front to back.

[0046] The principle and use process of the electric propeller of this embodiment are basically the same as those of embodiment 1, except that: during installation, the slot 61 of the deviation fine-tuner 6 is aligned with the connecting plate 31 of the lower shell 3, and then the deviation fine-tuner 6 is moved to a suitable position, and then the screw 200 is tightened.

[0047] When the electric propeller deviates, the screw 200 is loosened, the deviation fine-tuning device 6 is manually moved to a suitable position, and then the screw 200 is tightened.

Claims

1. An electric propeller, characterized in that: include An upper shell (1) and a lower shell (3) in the form of a sheet, a motor shell (2) arranged between the upper and lower shells (1, 3), a motor (4) arranged in the motor shell (2), and a propeller (5) arranged on one side of the motor shell (2); The upper and lower shells (1, 3) are vertically arranged one above the other, and the upper and lower shells (1, 3) are connected as a whole through the motor shell (2); The propeller (5) is connected to the output shaft of the motor (4) in a driving manner so as to be rotatable; The head of the motor housing (2) extends forwardly out of the upper housing (1) and the lower housing (3); A deviation fine-tuning device (6) is also provided at the rear edge of the lower housing (3), and the deviation fine-tuning device (6) can swing relative to the lower housing (3) along the thickness direction thereof; The lower housing (3) has a connecting plate (31) extending rearwardly, and the running deviation fine-tuning device (6) is fixed on the connecting plate (31) by screws (200) extending upward and downward; The tail of the deviation fine-tuning device (6) gradually extends from the front to the back in a direction away from the axis of the motor housing (2); The middle outer wall of the motor housing (2) has a stepped portion (23) in a stepped shape in the front-to-back direction; In the front-to-back direction, the thickness of the upper shell (1) gradually decreases from the middle position toward the front, and the front outer wall of the upper shell (1) has a smooth transition; The front part of the deviation fine-tuning device (6) has a slot (61) which is plugged into the rear end of the connecting plate (31), and the bottom of the slot (61) and the rear end of the connecting plate (31) are both arc-shaped.

2. The electric propeller according to claim 1, characterized in that: The axis of the motor housing (2) is parallel to the width direction of the upper and lower sheet-shaped housings (1, 3); the head of the motor housing (2) is bullet-shaped and faces forward; and the propeller (5) is located at the rear side of the tail of the motor housing (2).

3. The electric propeller according to claim 1, characterized in that: The front side edges of the upper shell (1) and the lower shell (3) are tilted backwards, and the upper and lower shells (1, 3) are fin-shaped as a whole.

4. The electric propulsion device according to any one of claims 1 to 3, characterized in that: It also includes a protective cover (7) arranged on the outer periphery of the propeller (5), the protective cover (7) being connected to the rear side of the upper shell (1) and the rear side of the lower shell (3) respectively, and the protective cover (7) is penetrated in the front-to-back direction; A connecting body (8) exposed from the protective cover (7) is arranged on the rear side of the propeller (5), and the connecting body (8) has a bullet-shaped tail.

5. The electric propulsion device according to any one of claims 1 to 3, characterized in that: The bottom of the lower shell (3) is provided with a base (100), and the base (100) has a slot (101) for plugging and matching with the bottom of an external sailboat or an external water skateboard.

6. The electric propulsion device according to any one of claims 1 to 3, characterized in that: A circuit board (9) electrically connected to the motor (4) is arranged in the lower housing (3); a wire hole (32) is provided between the lower housing (3) and the motor housing (2) to connect the two from top to bottom; the motor (4) and the circuit board (9) are electrically connected via a wire passing through the wire hole (32).

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