High-power brushless multi-speed automotive radiator fan

Abstract

The utility model discloses a high-power brushless multi-speed automobile radiator fan, comprising a frame and a motor installed in the middle of the frame, a fan blade is installed on the rotating shaft of the motor, the motor comprises a shell connected to the frame, a rotor is arranged in the shell, the upper and lower ends of the rotating shaft of the rotor are respectively connected to the shell through bearings, a detachable bottom cover is arranged outside the bottom of the shell, a hole for the bearing to be installed is arranged on the bottom cover, a limiting ring extending inward is arranged at the outlet of the hole, a rubber buffer pad is arranged between the limiting ring and the bearing installed at the lower end of the rotating shaft, the rubber buffer pad is annular, the peripheral wall of the rubber buffer pad is wavy, and the top and bottom of the wavy are arranged as flat surfaces. In this way, the technical effect of reliable structure and low noise in working state is achieved.

Description

Technical Field

[0001] The utility model relates to a radiator fan on a car, in particular to a high-power brushless multi-speed car radiator fan. Background Art

[0002] The car radiator fan is mainly installed on the radiator on the car engine to dissipate heat from the radiator and thus cool the engine. The structure of the radiator fan mainly includes a frame, a motor and blades installed on the motor. In the motor structure, the rotating shaft in the motor needs to be axially positioned during rotation to prevent its axial stringing, especially when the motor adopts a high-power brushless multi-speed motor. Due to the high speed and fast speed change, the axial stringing of the rotor is more obvious. The existing positioning structure mainly uses a metal washer, which will abut against the end face of the bearing installed on the rotating shaft. Due to errors in the assembly process, a gap is left between the end face of the bearing and the metal washer, resulting in the axial stringing of the rotating shaft, which will cause the bearing and the metal washer on the rotating shaft to collide, thereby generating noise, causing noise pollution to vehicle users. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a high-power brushless multi-speed automobile radiator fan which has a reliable structure and low noise in working state.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-power brushless multi-speed automobile radiator fan, comprising a frame and a motor installed in the middle of the frame, a fan blade is installed on the rotating shaft of the motor, the motor comprises a shell connected to the frame, a rotor is arranged in the shell, the upper and lower ends of the rotating shaft of the rotor are respectively connected to the shell through bearings, a detachable bottom cover is arranged outside the bottom of the shell, a bearing installation hole is arranged on the bottom cover, a limit ring extending inwardly is arranged at the outlet of the hole, a rubber buffer pad is arranged between the limit ring and the bearing installed at the lower end of the rotating shaft, the rubber buffer pad is in a circular ring shape, the peripheral wall of the rubber buffer pad is wavy, and the top and bottom of the wavy shape are arranged as flat surfaces.

[0005] The upper end of the shell is provided with an installation channel for the rotating shaft to pass through, and a limit cover is installed in the installation channel. The end of the rotating shaft passes through the middle opening of the limit cover, and the opening end of the limit cover is bent outward to form a limit stop ring. The limit stop ring abuts against the port of the installation channel, and the bearing installed above the rotating shaft is installed in the limit cover.

[0006] A spare buckle groove is also arranged below the inner end surface of the frame, and a flippable cover plate is installed on the spare buckle groove.

[0007] The frame is made of plastic material, and first plug rods are respectively arranged at the upper and lower ends of the right side wall of the frame, and a second plug rod is arranged on the upper side wall of the frame. The frame is provided with a plurality of buckle parts at a position close to the left side wall.

[0008] The beneficial effects of the utility model are as follows: since the peripheral wall of the rubber buffer pad is wavy, the rubber buffer pad has a large axial buffer space, so that the axial stringing of the rotating shaft can be buffered by the rubber buffer pad without making noise, and at the same time, after the bearing on the rotating shaft wears the rubber buffer pad, there will be a large compensation space, thus achieving the technical effect of reliable structure and low noise in working state.

[0009] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A three-dimensional diagram of a specific implementation of the utility model;

[0011] Figure 2 It is a cross-sectional view of a specific implementation mode of the utility model;

[0012] Figure 3 for Figure 2 A magnified view of middle;

[0013] Figure 4 for Figure 2 Enlarged view of middle B;

[0014] Figure 5 It is a stereoscopic diagram of a rubber buffer pad in a specific implementation manner of the utility model. DETAILED DESCRIPTION

[0015] The present invention is specifically described below through embodiments, which are only used to further illustrate the present invention and should not be construed as limiting the protection scope of the present invention.

[0016] like Figure 1 — Figure 5 As shown, the present embodiment discloses a high-power brushless multi-speed automobile radiator fan, comprising a frame 1 and a motor 2 installed in the middle of the frame 1, a fan blade 3 is installed on the rotating shaft 23 of the motor 2, the motor 2 comprises a housing 21 connected to the frame 1, a rotor 22 is arranged in the housing 21, the upper and lower ends of the rotating shaft 23 of the rotor 22 are respectively connected to the housing 21 through bearings 24, a detachable bottom cover 25 is provided on the bottom of the housing 21, a channel 26 for installing the bearing 24 is provided on the bottom cover 25, a limiting ring 27 extending inwardly is provided at the outlet of the channel 26, a rubber buffer pad 4 is provided between the limiting ring 27 and the bearing 24 installed at the lower end of the rotating shaft 23, the rubber buffer pad 4 is annular, the peripheral wall of the rubber buffer pad 4 is wavy, and the top and bottom of the wavy shape are set as flat surfaces 41.

[0017] The upper end of the housing 21 is provided with a mounting channel 5 for the rotation shaft 23 to pass through, and a limit cover 6 is installed in the mounting channel 5. The end of the rotation shaft 23 passes through the middle opening of the limit cover 6, and the open end of the limit cover 6 is bent outward to form a limit ring 61. The limit ring 61 abuts against the port of the mounting channel 5, and the bearing 24 installed above the rotation shaft 23 is installed (can be inserted) in the limit cover 6. Through this structure, the bearing 24 above the rotation shaft 23 can be fixed more reliably and stably.

[0018] A spare buckle slot 7 is also arranged below the inner end surface of the frame 1, and a flip cover plate 8 is installed on the spare buckle slot 7. The spare buckle slot 7 allows the frame 1 to match a variety of engine compartments of different specifications, thereby increasing the applicable scope of the frame 1. When the spare buckle slot 7 is needed, the cover plate 8 can be flipped open.

[0019] The frame 1 is made of plastic, and the first plug rod 10 is provided at the upper and lower ends of the right side wall of the frame 1, and the second plug rod 20 is provided on the upper side wall of the frame 1. The frame 1 is provided with a plurality of buckle parts 30 at the position close to the left side wall. This structure makes the installation of the frame 1 more convenient, and the first and second plug rods 20 can be directly plugged into the engine compartment, and the buckle parts 30 can be buckled into the corresponding positions of the engine compartment, which greatly improves the efficiency of the installation, and the structure is reliable after installation.

[0020] By adopting the above technical scheme, after the high-power brushless multi-speed automobile radiator fan is started, the wind force generated changes quickly and the strong wind force drives the rotor to move up and down. Since the peripheral wall of the rubber buffer pad 4 is wavy, the rubber buffer pad 4 has a large axial buffer space, so that the axial movement of the rotating shaft 23 can be buffered by the rubber buffer pad 4 without making noise. At the same time, after the bearing 24 on the rotating shaft 23 wears the upper and lower end surfaces of the rubber buffer pad 4 during the movement, it will also have a large compensation space, thereby achieving the technical effect of reliable structure and low noise in working state.

[0021] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0022] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-power brushless multi-speed automobile radiator fan, comprising a frame and a motor mounted in the middle of the frame, with a fan blade mounted on the rotating shaft of the motor, characterized in that: The motor includes a shell connected to the frame, a rotor is arranged in the shell, the upper and lower ends of the rotor's rotating shaft are respectively connected to the shell through bearings, a detachable bottom cover is provided on the bottom of the shell, a bearing installation hole is provided on the bottom cover, a limiting ring extending inward is provided at the outlet of the hole, a rubber buffer pad is provided between the limiting ring and the bearing installed at the lower end of the rotating shaft, the rubber buffer pad is in a circular ring shape, the peripheral wall of the rubber buffer pad is wavy, and the top and bottom of the wavy shape are set as flat surfaces.

2. The high-power brushless multi-speed automobile radiator fan according to claim 1 is characterized in that: The upper end of the shell is provided with an installation channel for the rotating shaft to pass through, and a limit cover is installed in the installation channel. The end of the rotating shaft passes through the middle opening of the limit cover, and the opening end of the limit cover is bent outward to form a limit stop ring. The limit stop ring abuts against the port of the installation channel, and the bearing installed above the rotating shaft is installed in the limit cover.

3. The high-power brushless multi-speed automobile radiator fan according to claim 1, characterized in that: A spare buckle groove is also arranged below the inner end surface of the frame, and a flippable cover plate is installed on the spare buckle groove.

4. The high-power brushless multi-speed automobile radiator fan according to claim 1, characterized in that: The frame is made of plastic material, and first plug rods are respectively arranged at the upper and lower ends of the right side wall of the frame, and a second plug rod is arranged on the upper side wall of the frame. The frame is provided with a plurality of buckle parts at a position close to the left side wall.

Images