Waterproof automobile air conditioner fan

Abstract

The utility model discloses a waterproof automobile air conditioner fan which comprises a circular-tube-shaped shell, a stator, a rotor and a circuit board are arranged in the shell, the circuit board is connected with an electric wire, an upper opening of the shell is connected with a front cover in a sealed mode, a lower opening of the shell is connected with a rear cover in a sealed mode, and a circular groove is formed in the middle of the front cover. A rubber ring is embedded in the groove in a clamping mode, a rotating shaft on the rotor tightly penetrates through the rubber ring, a clamping spring is further arranged on the rotating shaft, the end face of the clamping spring makes contact with the end face of the rubber ring, the circuit board is installed in the rear cover, a U-shaped material shortage opening is formed in the rear cover, a plugging block is arranged on the material shortage opening in a sealing connection mode, and the plugging block is made of rubber materials. The plugging block is provided with a waterproof channel for a wire to pass through. Therefore, the fan has waterproof performance and is prevented from losing efficacy when encountering water.

Description

Technical Field

[0001] The utility model relates to a component in an automotive air - conditioning system, in particular to a waterproof automotive air - conditioning blower. Background Technique

[0002] The air - conditioning blower used in an automobile is mainly used for controlling the air volume, and then adjusting the temperature inside the vehicle. The most important component in the air - conditioning blower is the motor. With the development and progress of society, automobiles have various uses, and there has emerged a scenario where an automobile travels in water. In order to achieve the waterproof performance of the automobile in water, the air - conditioning blower must also meet the waterproof requirement. However, the existing air - conditioning blower (i.e., the motor structure) generally does not have waterproof performance, and the outer shell of the air - conditioning blower is also designed with heat - dissipation holes. After encountering water, the water will enter the rotor and positioning in the air - conditioning blower, resulting in a short - circuit of the circuit, thus damaging the air - conditioning blower. Content of the Utility Model

[0003] To solve the above problems, the utility model provides a waterproof automotive air - conditioning blower, aiming to make the blower have waterproof performance and avoid failure when encountering water.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A waterproof automotive air - conditioning blower includes a cylindrical outer shell. A stator, a rotor and a circuit board are arranged inside the outer shell. The circuit board is connected with an electric wire. It is characterized in that: The upper opening of the outer shell is hermetically connected with a front cover, and the lower opening of the outer shell is hermetically connected with a rear cover. A circular first groove is provided in the middle of the front cover, and a first rubber ring is embedded in the first groove. One end of the rotating shaft on the rotor tightly passes through the first rubber ring, and a first snap ring is also arranged on the rotating shaft. The end face of the first snap ring contacts the end face of the first rubber ring. A circular second groove is provided on the rear cover, and a second rubber ring is embedded in the second groove. The other end of the rotating shaft passes through the second rubber ring, and a second snap ring is also arranged on the rotating shaft. The end face of the second snap ring contacts the end face of the second rubber ring. The circuit board is installed in the rear cover. A "U" - shaped material - missing opening is provided on the rear cover, and a sealing - connected plugging block is arranged on the material - missing opening. A waterproof channel for the power wire to pass through is provided on the plugging block.

[0005] A U - shaped groove matching the material - missing opening is formed in the lower part of the peripheral wall of the plugging block, and the U - shaped groove and the material - missing opening are tightly inserted in an uneven manner. A clamping groove matching the edge of the opening of the outer shell is formed in the upper part of the peripheral wall of the plugging block, and the clamping groove and the edge of the opening of the outer shell are tightly inserted in an uneven manner.

[0006] A frustum - shaped extension part extends from the outer end face of the plugging block, and a wire - passing hole is provided on the extension part. The wire - passing hole is communicated with the waterproof channel.

[0007] An "M"-shaped mounting plate is also welded on the outer shell. Mounting holes are respectively arranged on both sides of the mounting plate. The middle part of the mounting plate is set to be arc-shaped and is welded to fit on the outer peripheral wall of the outer shell.

[0008] The beneficial effects of the present utility model are as follows: The upper opening of the outer shell is hermetically connected with a front cover, and the lower opening of the outer shell is hermetically connected with a rear cover. The electric wire enters the rear cover through the waterproof channel on the plugging block and is connected to the circuit board, preventing water from entering the outer shell from the electric wire. The rubber ring can effectively prevent water from entering the outer shell from the rotating shaft, so that the fan has waterproof performance and avoids failure due to water.

[0009] The present utility model will be further described below in conjunction with the drawings and specific embodiments. Description of the Drawings

[0010] Figure 1 is a three-dimensional view of the specific embodiment of the present utility model;

[0011] Figure 2 is a cross-sectional view of the specific embodiment of the present utility model;

[0012] Figure 3 is an exploded view of the specific embodiment of the present utility model;

[0013] Figure 4 is a three-dimensional view of the plugging block in the specific embodiment of the present utility model. Specific Embodiments

[0014] The present utility model will be specifically described below through examples, which are only used to further illustrate the present utility model and cannot be construed as limiting the protection scope of the present utility model.

[0015] Such as Figure 1 — Figure 4As shown in the figure, this embodiment discloses a waterproof automotive air-conditioning fan, which includes a cylindrical outer shell 1. Inside the outer shell 1, there are a stator 2, a rotor 3, and a circuit board 4. The circuit board 4 is connected to an electric wire. The upper opening of the outer shell 1 is hermetically connected to a front cover 5, and the lower opening of the outer shell 1 is hermetically connected to a rear cover 6. The front cover 5 and the rear cover 6 can be hermetically connected to the outer shell by welding or a sealing ring. In the middle of the front cover 5, there is a circular first groove 51, and a first rubber ring 7 is embedded in the first groove 51. One end of the rotating shaft 31 on the rotor 3 tightly passes through the first rubber ring 7 and is configured with a wind wheel (the drawing of the wind wheel is not shown). A first snap ring 8 is also configured on the rotating shaft 31, and the end face of the first snap ring 8 contacts the end face of the first rubber ring 7. There is a circular second groove 60 on the rear cover 6, and a second rubber ring 70 is embedded in the second groove 60. The other end of the rotating shaft 31 passes through the second rubber ring 70, and a second snap ring 80 is also configured on the rotating shaft 31. The end face of the second snap ring 80 contacts the end face of the second rubber ring 70, so that the rotating shaft 31 has waterproof performance during rotation. In this way, the rubber ring 7 can be positioned. When the circuit board 4 is installed in the rear cover 6, there is a "U"-shaped material shortage opening 61 on the rear cover 6, and a sealing plug 9 is configured on the material shortage opening 61. The plug 9 is made of rubber, and there is a waterproof channel 91 for the electric wire to pass through on the plug 9. When the electric wire passes through the waterproof channel 91, the inner wall of the waterproof channel 91 will contact and squeeze the electric wire, making the installation of the electric wire waterproof.

[0016] On the lower part of the peripheral wall of the plug 9, there is a "U"-shaped groove 92 that matches the material shortage opening 61. The "U"-shaped groove 92 and the material shortage opening 61 are tightly inserted in an uneven manner. On the upper part of the peripheral wall of the plug 9, there is a clamping groove 93 that matches the edge of the opening of the outer shell 1. The clamping groove 93 and the edge of the opening of the outer shell 1 are tightly inserted in an uneven manner. The "U"-shaped groove 92 and the clamping groove 93 are designed to be connected. Through this structure, the sealing performance between the plug 9 and the outer shell 1 and the material shortage opening 61 of the rear cover 6 can be better, and the installation is convenient and the structure is reliable.

[0017] On the outer end face of the plug 9, there extends a frustum-shaped extension 94. There is a wire passing hole on the extension 94, and the wire passing hole is communicated with the waterproof channel 91. The wire passing hole extends the length of the waterproof channel 91, making the sealing performance of the electric wire passing through the plug 9 better.

[0018] An "M"-shaped mounting plate 10 is also welded on the outer shell 1. On both sides of the mounting plate 10, there are mounting holes 101 for screw connection. The middle part of the mounting plate 10 is set to be arc-shaped and is fitted and welded or riveted on the outer peripheral wall of the outer shell 1. The outer shell 1 is more reliable in positioning and installation through the mounting plate 10.

[0019] With the above technical solution, the upper opening of the housing 1 is hermetically connected to the front cover 5, and the lower opening of the housing 1 is hermetically connected to the rear cover 6. The electric wire enters the rear cover 6 through the waterproof channel 91 on the plugging block 9 and is connected to the circuit board 4, preventing water from entering the housing 1 through the electric wire. The rubber ring 7 can effectively prevent water from entering the housing 1 through the rotating shaft 31, so that the fan has waterproof performance and avoids failure due to water.

[0020] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claimed rights.

[0021] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A waterproof automobile air conditioning fan, comprising a cylindrical shell, a stator, a rotor and a circuit board arranged in the shell, the circuit board being connected with electric wires, characterized in that: The upper opening of the shell is sealed and connected with the front cover, and the lower opening of the shell is sealed and connected with the back cover. A circular first groove is provided in the middle of the front cover, and a first rubber ring is embedded in the first groove. One end of the rotating shaft on the rotor passes tightly through the first rubber ring, and a first retaining spring is also arranged on the rotating shaft, and the end face of the first retaining spring contacts the end face of the first rubber ring. A circular second groove is provided on the back cover, and a second rubber ring is embedded in the second groove. The other end of the rotating shaft passes through the second rubber ring, and a second retaining spring is also arranged on the rotating shaft, and the end face of the second retaining spring contacts the end face of the second rubber ring. The circuit board is installed in the back cover, and a "U"-shaped material shortage opening is provided on the back cover, and a sealing block with a sealing connection is arranged on the material shortage opening, and a waterproof channel for the power supply line to pass through is provided on the sealing block.

2. The waterproof automobile air conditioning fan according to claim 1, characterized in that: A U-shaped groove matching the material shortage opening is formed on the lower part of the peripheral wall of the blocking block, and the U-shaped groove is tightly plugged into the concave and convex part of the material shortage opening. A clamping groove matching the edge of the shell opening is formed on the upper part of the peripheral wall of the blocking block, and the clamping groove is tightly plugged into the concave and convex part of the shell opening edge.

3. The waterproof automobile air conditioning fan according to claim 1 or 2, characterized in that: A truncated cone-shaped extension portion extends from the outer end surface of the blocking block, and a threading hole is provided on the extension portion, and the threading hole is communicated with the waterproof channel.

4. The waterproof automobile air conditioning fan according to claim 1, characterized in that: An "M"-shaped mounting plate is also welded on the shell, and mounting holes are respectively arranged on both sides of the mounting plate. The middle part of the mounting plate is arranged in an arc shape and is welded to the outer peripheral wall of the shell.

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