Intermodulation motor output shaft connection structure

Abstract

The utility model discloses an intermodulation motor output shaft connection structure comprising a metal support disc and a metal output shaft, and a butt joint seat is formed on the metal support disc; the bottom end of the metal output shaft is fixedly provided with an insulation butt joint frame, the metal output shaft is embedded and installed in a butt joint seat through the insulation butt joint frame, and the butt joint seat is filled with injection molding plastic; the metal output shaft and the metal support disc are insulated from each other through the insulation butt joint frame and the injection molding plastic cement. According to the utility model, the metal output shaft and the metal support disc are in insulation connection through injection molding plastic, electromagnetic signals of the motor shaft cannot be transmitted to the metal output shaft, transmission interference of the electromagnetic signals is prevented, meanwhile, the insulation butt joint frame is arranged, and the metal output shaft and the metal support disc are connected in a matched mode through the insulation butt joint frame. Automatic axial positioning of the metal output shaft is achieved, deviation during installation is prevented, and assembling is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of motor output shafts, in particular to an intermodulation motor output shaft connection structure. Background Art

[0002] Intermodulation motors, also known as AC motors or rotary motors, are a type of electric motors widely used in various industrial and commercial fields. In industrial production, intermodulation motors are used to drive various machines and equipment, such as pumps, fans, compressors, machine tools, etc. In the transportation field, intermodulation motors are used to drive electric vehicles, electric bicycles, electric trains, etc. The main feature of this type of motor is that they use alternating current (AC) to generate a rotating magnetic field, thereby driving the motor shaft to rotate.

[0003] For example, the authorization announcement number is CN216012883U, the authorization announcement date is 2022.04.15, and the name is "Micromotor with strong anti-electromagnetic interference performance". Its specific structure includes a micromotor body, and an anti-interference mechanism is provided on the outside of the micromotor body. The anti-interference mechanism includes a left magnetic shell, a right magnetic shell, a connecting hole and a positioning groove. The outer wall of the left magnetic shell is provided with a group of vertically symmetrical mounting mechanisms, and the mounting mechanisms include a fixing ring, a sliding block, a fixing block, a protruding block, a connecting block, a retaining ring, a reset spring and a mounting clamp. The interference object is surrounded by the left magnetic shell and the right magnetic shell to cut off or weaken the spatial coupling channel of the interference field and prevent the transmission of its electromagnetic energy, thereby improving the anti-electromagnetic interference performance of the micromotor body.

[0004] However, the motor generates electromagnetic signals when powered on. Part of the signals will pass through the motor shaft and be transmitted layer by layer to the output shaft. The output shaft is connected to the antenna. The output electromagnetic signal will affect the connected antenna signal and cause interference. Utility Model Content

[0005] The purpose of the utility model is to overcome the problem in the prior art that the electromagnetic signal generated by the motor is transmitted to the output shaft through the motor shaft and finally interferes with the antenna signal connected to the output shaft, and provides an intermodulation motor output shaft connection structure, in which the metal output shaft and the metal bracket disk are insulated by injection-molded plastic, so that the electromagnetic signal of the motor shaft cannot be transmitted to the metal output shaft, thereby preventing electromagnetic signal transmission interference, and at the same time, an insulating docking frame is provided, and the insulating docking frame is used to cooperate with the connection between the metal output shaft and the metal bracket disk to realize automatic axial positioning of the metal output shaft, and at the same time significantly improve the stability of the connection between the two, thereby ensuring the idling torque and pull-out force of the output shaft.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The utility model discloses an intermodulation motor output shaft connection structure, comprising a metal bracket disk and a metal output shaft, wherein a docking seat is formed on the metal bracket disk; an insulating docking frame is fixedly arranged at the bottom end of the metal output shaft, the metal output shaft is embedded and installed in the docking seat through the insulating docking frame, and the docking seat is filled with injection-molded plastic;

[0008] The insulating docking frame and the injection-molded plastic insulate the metal output shaft from the metal support plate.

[0009] Preferably, the insulating docking frame includes two groups of insulating sheets, which are connected by a plurality of stand combinations, and the insulating sheets match the docking seat openings. A plug-in through hole is opened at the center of the insulating sheet, and the plug-in through hole matches the metal output shaft.

[0010] Preferably, the insulating sheet is provided with gaps on its circumferential sides for easy filling with injection-molded plastic.

[0011] Preferably, an end circumference surface of one end of the metal output shaft connected to the insulating docking frame is provided with an end surface structure, and a through connection hole is provided on the end surface structure.

[0012] Preferably, a first connecting portion and a second connecting portion are respectively provided inside the insulating docking frame, and a positioning rod is connected between the first connecting portion and the second connecting portion, and the positioning rod passes through a connecting hole on the metal output shaft.

[0013] Preferably, the second connecting portion is provided with a connecting screw hole, the first connecting portion is provided with a mounting hole, the end of the positioning rod is provided with a connecting thread, the positioning rod is passed through the mounting hole and the end is spirally connected to the connecting screw hole via the connecting thread.

[0014] Compared with the prior art, the utility model has the following beneficial effects: by insulating the metal output shaft and the metal bracket disk through injection-molded plastic, the electromagnetic signal of the motor shaft cannot be transmitted to the metal output shaft, thereby preventing electromagnetic signal transmission interference; at the same time, an insulating docking frame is provided, and the insulating docking frame is used to cooperate with the connection between the metal output shaft and the metal bracket disk to automatically perform axial positioning of the metal output shaft, thereby preventing deviation during installation and making assembly more convenient; at the same time, the insulating docking frame is used to cooperate with the connection between the metal output shaft and the metal bracket disk, thereby significantly improving the stability of the connection between the metal output shaft and the metal bracket disk, thereby ensuring the idling torque and pull-out force of the metal output shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of an intermodulation motor output shaft connection structure proposed by the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the metal output shaft in the utility model;

[0017] Figure 3 It is a schematic diagram of the split structure of the metal output shaft and the insulating docking frame in the utility model;

[0018] Figure 4 It is a schematic diagram of the insulating docking frame in the utility model.

[0019] Figure numerals: 1. Metal bracket plate; 11. Docking seat; 2. Metal output shaft; 21. End face structure; 22. Connecting hole; 3. Injection molded plastic; 4. Insulating docking frame; 41. Vertical frame; 42. Insulating sheet; 421. Notch; 43. Positioning rod; 44. First connecting part; 441. Mounting hole; 45. Second connecting part; 451. Connecting screw hole. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-4 , further illustrating the specific implementation of the utility model of an intermodulation motor output shaft connection structure, overcoming the problem in the prior art that the electromagnetic signal generated by the motor is transmitted to the output shaft through the motor shaft and finally interferes with the antenna signal connected to the output shaft, and providing an intermodulation motor output shaft connection structure, by insulating the metal output shaft and the metal bracket disk through injection molding plastic, so that the electromagnetic signal of the motor shaft cannot be transmitted to the metal output shaft, thereby preventing electromagnetic signal transmission interference, and at the same time providing an insulating docking frame, through the insulating docking frame in conjunction with the connection between the metal output shaft and the metal bracket disk, to achieve automatic axial positioning of the metal output shaft, to prevent deviation during installation, and to make assembly more convenient, and at the same time, the insulating docking frame in conjunction with the connection between the metal output shaft and the metal bracket disk, significantly improving the stability of the connection between the metal output shaft and the metal bracket disk, and ensuring the idling torque and pull-out force of the output shaft. The utility model of an intermodulation motor output shaft connection structure is not limited to the description of the following embodiments.

[0021] This embodiment provides an intermodulation motor output shaft connection structure, including a metal support plate 1 and a metal output shaft 2, the metal support plate 1 is formed with a docking seat 11; an insulating docking frame 4 is fixedly provided at the bottom end of the metal output shaft 2, the metal output shaft 2 is embedded and installed in the docking seat 11 through the insulating docking frame 4, and the docking seat 11 is filled with injection molded plastic 3;

[0022] The insulating docking frame 4 and the injection-molded plastic 3 insulate the metal output shaft 2 from the metal bracket disk 1. By insulating and connecting the metal output shaft 2 and the metal bracket disk 1 through the injection-molded plastic, the electromagnetic signal of the motor shaft cannot be transmitted to the metal output shaft 2, thereby preventing electromagnetic signal transmission interference. At the same time, the insulating docking frame 4 is provided, and the insulating docking frame 4 cooperates with the connection between the metal output shaft 2 and the metal bracket disk 1 to automatically position the metal output shaft 2 in the axial direction, thereby preventing deviation during installation, and making assembly more convenient. At the same time, the insulating docking frame 4 cooperates with the connection between the metal output shaft 2 and the metal bracket disk 1 to significantly improve the stability of the connection between the metal output shaft 2 and the metal bracket disk 1, thereby ensuring the idling torque and pull-out force of the metal output shaft 2.

[0023] The insulating docking frame 4 includes two groups of insulating sheets 42, which are connected by a plurality of vertical frames 41, and the insulating sheets 42 match the opening of the docking seat 11. A plug-in through hole is provided at the center of the insulating sheet 42, and the plug-in through hole matches the metal output shaft 2. That is, the metal output shaft 2 is plugged into the plug-in through hole at the center of the insulating sheet 42, and then the insulating docking frame 4 is embedded and installed in the docking seat 11. The peripheral sides of the insulating sheet 42 are provided with notches 421 for easy filling of the injection-molded plastic 3. Afterwards, when filling the injection-molded plastic 3, the notches 421 for easy filling of the injection-molded plastic 3 are provided on the peripheral sides of the insulating sheet 42, which makes it more convenient to fill the injection-molded plastic 3.

[0024] An end surface 21 is provided on the circumference of one end of the metal output shaft 2 connected to the insulating docking frame 4, and a through connection hole 22 is provided on the end surface structure 21. A first connection portion 44 and a second connection portion 45 are provided inside the insulating docking frame 4, respectively, and a positioning rod 43 is connected between the first connection portion 44 and the second connection portion 45, and the positioning rod 43 passes through the connection hole 22 on the metal output shaft 2. A connecting screw hole 451 is provided on the second connection portion 45, and a mounting hole 441 is provided on the first connection portion 44. A connecting thread is provided on the end of the positioning rod 43, and the positioning rod 43 is penetrated in the mounting hole 441 and the end is spirally connected to the connecting screw hole 451 through the connecting thread. Furthermore, when the metal output shaft 2 is connected to the insulating docking frame 4, the positioning rod 43 is passed through the mounting hole 441 and penetrates the connecting hole 22 on the metal output shaft 2, and the end of the positioning rod 43 is spirally connected to the connecting screw hole 451 through a connecting thread, thereby penetrating and fixing the metal output shaft 2, significantly improving the connection strength, preventing torsion during rotation, and improving the transmission stability of the metal output shaft 2.

[0025] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An intermodulation motor output shaft connection structure, comprising a metal support plate (1) and a metal output shaft (2), characterized in that: A docking seat (11) is formed on the metal support plate (1); an insulating docking frame (4) is fixedly arranged at the bottom end of the metal output shaft (2); the metal output shaft (2) is embedded and installed in the docking seat (11) through the insulating docking frame (4), and the docking seat (11) is filled with injection-molded plastic (3); The insulating docking frame (4) and the injection-molded plastic (3) insulate the metal output shaft (2) and the metal support plate (1) from each other.

2. The intermodulation motor output shaft connection structure according to claim 1, characterized in that: The insulating docking frame (4) comprises two groups of insulating sheets (42), and the two groups of insulating sheets (42) are connected in combination via a plurality of vertical frames (41); The insulating sheet (42) matches the opening of the docking seat (11), a plug-in through hole is provided at the center of the insulating sheet (42), and the plug-in through hole matches the metal output shaft (2).

3. The intermodulation motor output shaft connection structure according to claim 2, characterized in that: The insulating sheet (42) is provided with notches (421) on its circumferential side for easy filling with injection-molded plastic (3).

4. The intermodulation motor output shaft connection structure according to claim 2, characterized in that: An end surface (21) is provided on the peripheral surface of one end of the metal output shaft (2) connected to the insulating docking frame (4), and a through connection hole (22) is provided on the end surface structure (21).

5. The intermodulation motor output shaft connection structure according to claim 4, characterized in that: A first connecting portion (44) and a second connecting portion (45) are respectively provided inside the insulating docking frame (4), and a positioning rod (43) is connected between the first connecting portion (44) and the second connecting portion (45), and the positioning rod (43) passes through a connecting hole (22) on the metal output shaft (2).

6. The intermodulation motor output shaft connection structure according to claim 5, characterized in that: The second connecting portion (45) is provided with a connecting screw hole (451), and the first connecting portion (44) is provided with a mounting hole (441); The end of the positioning rod (43) is provided with a connecting thread, the positioning rod (43) is inserted into the mounting hole (441) and the end is spirally connected to the connecting screw hole (451) via the connecting thread.

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