Multi-stage speed brush frame type automobile radiator fan

Abstract

The utility model discloses a multistage speed brush frame type automobile radiator fan, which comprises a frame, a motor and fan blades, the frame comprises two adjacent round frames, mounting ring seats for mounting the motor are respectively arranged in the two round frames, the outer walls of the mounting ring seats are connected with the inner hole walls of the round frames through connecting rods, the motor is mounted in the mounting ring seats, and the fan blades are connected with the motor. The fan blades are connected to output shafts of the motors, one end of each conductive wire harness is connected with the corresponding motor through a relay and a resistor, the other end of each conductive wire harness is connected with an automobile ECU, each motor comprises a rotor and a shell, each rotor is arranged in the corresponding shell, and an output shaft on each rotor is provided with a front bearing and a rear bearing. A limiting groove for the front bearing to be arranged is formed in the shell, the front bearing is arranged in the limiting groove, a limiting cavity is formed in the shell, and the rear bearing is sleeved with a rubber sleeve and then limited in the limiting cavity. The speed can be automatically adjusted according to the temperature of the water tank, corresponding air volume can be output, and operation noise is low.

Description

Technical Field

[0001] The utility model relates to a radiator fan on a car, in particular to a multi-stage speed brush frame type 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 then cool the engine. During the use of some off-road vehicles, there are intense driving situations and unconventional off-road use, which will cause the engine to be overloaded. When the engine is overloaded, the engine temperature will rise, and the engine temperature will be transmitted to the water tank, and the water tank temperature will be transmitted to the radiator for heat dissipation. Generally, the radiator fan will only provide a quantitative air volume output. Due to the excessive load, the engine will overheat, causing the water tank to be in a high-temperature critical state for a long time. At this time, the radiator fan motor has an excessive current load, which may cause the motor to be damaged and fail due to excessive current load.

[0003] 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. 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, there is a gap 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

[0004] In order to solve the above problems, the utility model provides a multi-speed brush frame type automobile radiator fan, which aims to automatically adjust the speed according to the temperature of the water tank and output the corresponding air volume with low operating noise.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-stage speed brush frame type automobile radiator fan, comprising a frame, a motor and a fan blade, the frame comprising two adjacent circular frames, the two circular frames being connected by a connecting plate, the two circular frames being respectively provided with mounting ring seats for installing a power supply motor, the outer wall of the mounting ring seat being connected to the inner hole wall of the circular frame by a connecting rod, the motor being installed in the mounting ring seat, the fan blade being connected to the output shaft of the motor, and also comprising a conductive wire harness corresponding to the motor one by one, one end of the conductive wire harness being connected to the motor through a relay and a resistor, and the other end of the conductive wire harness being connected to an automobile ECU, the motor comprising a rotor and a housing, the rotor being placed in the housing, the output shaft on the rotor being provided with a front bearing and a rear bearing, the housing being provided with a limiting groove for setting the front bearing, the front bearing being placed in the limiting groove, a limiting cavity being provided in the housing, the rear bearing being sleeved with a rubber sleeve and being restricted in the limiting cavity.

[0006] The outer shell includes a main body, a top cover and a bottom cover, the top cover is connected to the top end of the main body, the bottom cover is connected to the tail end of the main body, the limiting groove is arranged at the center position of the top cover, a limiting ring with a conical peripheral wall is welded on the bottom cover, a recessed portion is bent on the bottom cover, and the limiting cavity is formed between the recessed portion and the limiting ring, and the inner hole diameter of the limiting ring is smaller than the outer diameter of the rubber sleeve.

[0007] The outer peripheral wall of the rubber sleeve is convex in an arc shape.

[0008] A first positioning rod is respectively arranged below the two circular frames, and a second positioning rod is arranged below the connecting plate between the two circular frames.

[0009] The beneficial effects of the utility model are:

[0010] 1. When the vehicle's water tank temperature is in a critical high temperature state for a long time, the vehicle ECU controls the two motors to work at the same time to supply heat to the radiator, effectively improving the efficiency of heat dissipation;

[0011] 2. Due to the existence of the relay, excessive current can be prevented from passing through the motor, which can prevent the motor from being damaged and failing due to excessive current load;

[0012] 3. The car ECU controls the resistivity of the resistor by detecting the water tank temperature, thereby controlling the speed and opening and closing of the two motors, so that it can adjust the speed and output the matching air volume according to the water tank temperature, so that the radiator can be cooled in time to ensure the stable operation of the engine, save electricity and reduce the fuel consumption of the vehicle;

[0013] 4. When the output shaft of the motor moves axially, buffering can be achieved through the collision contact between the rubber sleeve and the inner wall of the limit cavity, without emitting collision sound, making the operation noise small.

[0014] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of a specific implementation of the utility model;

[0016] Figure 2 It is a partial cutaway view of a specific implementation mode of the utility model;

[0017] Figure 3 for Figure 2 A magnified view of middle;

[0018] Figure 4 This is a relationship diagram between the motor and the automobile ECU in a specific implementation manner of the utility model. DETAILED DESCRIPTION

[0019] 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.

[0020] like Figure 1 — Figure 3 As shown, this embodiment discloses a multi-stage speed brush frame type automobile radiator fan, including a frame 1, a motor 2 and a fan blade 3, the frame 1 includes two adjacent circular frames 11, the two circular frames 11 are connected by a connecting plate 12, and the two circular frames 11 are respectively provided with mounting ring seats 13 for mounting the power supply machine 2, the outer wall of the mounting ring seat 13 is connected to the inner hole wall of the circular frame 11 through a connecting rod 14, the motor 2 is installed in the mounting ring seat 13, the fan blade 3 is connected to the output shaft 4 of the motor 2, and also includes a conductive wire harness 5 corresponding to the motor 2 one by one, as shown in FIG. Figure 4 As shown, one end of the conductive harness 5 is connected to the motor 2 in parallel through the relay 6 and the resistor 7, and the other end of the conductive harness 5 is connected to the automobile ECU. The motor 2 includes a rotor 21 and a housing 22. The rotor 21 is placed in the housing 22. The output shaft 4 on the rotor 21 is equipped with a front bearing 211 and a rear bearing 212. A limiting groove 227 is provided in the housing 22 for the front bearing 211. The front bearing 211 is placed in the limiting groove 227. A limiting cavity 228 is provided in the housing 22. The rear bearing 212 is sleeved with a rubber sleeve 8 and is limited in the limiting cavity 228. In this way, the axial string movement of the output shaft 4 is limited in the limiting cavity 228, and the collision caused by the string movement is buffered by the elasticity of the rubber sleeve 8 to reduce noise.

[0021] The housing 22 includes a body 221, a top cover 222 and a bottom cover 223. The top cover 222 is connected to the top end of the body 221, the bottom cover 223 is connected to the tail end of the body 221, the limiting groove 227 is set at the center of the top cover 222, a limiting ring 224 with a tapered peripheral wall is welded on the bottom cover 223, a recessed portion 225 is bent on the bottom cover 223, a limiting cavity 228 is formed between the recessed portion 225 and the limiting ring 224, and the inner hole diameter of the limiting ring 224 is smaller than the outer diameter of the rubber sleeve 8. Through this structure, the structure of the limiting cavity 228 can be made more reliable and stable, and the cooperation with the bearing on the output shaft 4 is reliable and stable.

[0022] The outer wall of the rubber sleeve 8 is convex in an arc shape, so that the outer wall of the rubber sleeve 8 is smaller at both ends and larger in the middle, so that the inner diameter design size of the limiting ring 224 has a larger error space.

[0023] A first positioning rod 10 is provided below the two round frames 11, and a second positioning rod 20 is provided below the connecting plate 12 between the two round frames 11. The first positioning rod 10 and the second positioning rod 20 can be plugged and positioned with the mounting position on the engine compartment, making it more convenient to install.

[0024] The above technical solution has the following technical effects:

[0025] 1. When the vehicle water tank temperature is in a critical high temperature state for a long time, the vehicle ECU controls the two motors 2 to work simultaneously to supply heat to the radiator, effectively improving the efficiency of heat dissipation;

[0026] 2. Due to the existence of relay 6, excessive current can be prevented from passing through motor 2, which can prevent motor 2 from being damaged and failing due to excessive current load;

[0027] 3. The automobile ECU controls the resistance 7 of the resistor 7 by detecting the water tank temperature, thereby controlling the speed and opening and closing of the two motors 2, so that the speed can be adjusted automatically according to the water tank temperature and the matching air volume can be output, so that the radiator can be cooled in time, the stable operation of the engine can be ensured, and the effect of saving electricity and reducing the fuel consumption of the vehicle can be achieved;

[0028] 4. When the output shaft 4 of the motor 2 moves axially, buffering can be achieved through the collision contact between the rubber sleeve 8 and the inner wall of the limiting cavity 228, without emitting collision sound, so that the operating noise is small.

[0029] 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.

[0030] 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 multi-speed brush frame type automobile radiator fan, comprising a frame, a motor and a fan blade, characterized in that: The frame includes two adjacent circular frames, which are connected by a connecting plate. The two circular frames are respectively provided with mounting ring seats for installing the power supply motor. The outer wall of the mounting ring seat is connected to the inner hole wall of the circular frame through a connecting rod. The motor is installed in the mounting ring seat, and the fan blade is connected to the output shaft of the motor. It also includes a conductive wire harness corresponding to the motor one by one. One end of the conductive wire harness is connected to the motor through a relay and a resistor, and the other end of the conductive wire harness is connected to the automobile ECU. The motor includes a rotor and a shell. The rotor is placed in the shell. The output shaft on the rotor is configured with a front bearing and a rear bearing. A limiting groove is provided in the shell for setting the front bearing. The front bearing is placed in the limiting groove. A limiting cavity is provided in the shell. The rear bearing is sleeved with a rubber sleeve and is restricted in the limiting cavity.

2. The multi-stage speed brush holder type automobile radiator fan according to claim 1, characterized in that: The outer shell includes a main body, a top cover and a bottom cover, the top cover is connected to the top end of the main body, the bottom cover is connected to the tail end of the main body, the limiting groove is arranged at the center position of the top cover, a limiting ring with a conical peripheral wall is welded on the bottom cover, a recessed portion is bent on the bottom cover, and the limiting cavity is formed between the recessed portion and the limiting ring, and the inner hole diameter of the limiting ring is smaller than the outer diameter of the rubber sleeve.

3. The multi-stage speed brush holder type automobile radiator fan according to claim 1 or 2, characterized in that: The outer peripheral wall of the rubber sleeve is convex in an arc shape.

4. The multi-stage speed brush holder type automobile radiator fan according to claim 1, characterized in that: A first positioning rod is respectively arranged below the two circular frames, and a second positioning rod is arranged below the connecting plate between the two circular frames.

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