Long life magneto

Abstract

The utility model relates to magnetoelectric machine technical field especially relates to a long life magnetoelectric machine, the rotor shell outside wall is provided with the signal disc, the signal disc is close to the bearing mounting end outer edge setting, the magnetic shoe one side and signal disc have axial clearance, the rotor shell when rotating, its outside wall close to the signal disc of bearing mounting end synchronous rotation, the fixed sensor passes through the alternate change of detecting the tooth and the groove on the signal disc, reads the signal, the side surface of magnetic shoe and the end surface between signal disc formed axial clearance, signal disc and magnetic shoe are staggered in the axial direction, thereby greatly reduced the direct interference of lower magnetic shoe strong magnetic field, through setting axial clearance, let signal disc away from the magnetic field interference area of magnetic shoe, to ensure that the sensor can gather clearer, more accurate position signal, as far as possible reduced the abnormal working condition that appears because of signal reading error, thereby promoted magnetoelectric machine and even the reliability and service life of whole engine system.

Description

Technical Field

[0001] This utility model relates to the field of magneto technology, and in particular to a long-life magneto. Background Technology

[0002] A magneto typically includes a rotor housing. One end of the rotor housing has a rotor mounting groove for accommodating the magnets and stator, while the other end is a bearing mounting end for mounting a bearing assembly including a bearing housing and a bearing. A signal disk is also provided on the outer wall of the rotor housing. In the prior art, such as the integrated magneto rotor disclosed in patent number CN202321152057.4, the signal teeth on the rotor overlap with the projection of the magnets (and magnets) in the axial direction. The magnets themselves have strong magnetism, and the strong magnetic field they generate will interfere with the magnetic field environment near the signal disk. When the signal disk (usually made of magnetically conductive material) rotates and passes through a fixed sensor, the magnetic field formed by the magnets will seriously affect the sensor's accurate recognition of changes in the signal disk, resulting in decreased ignition signal accuracy and false triggering.

[0003] Based on this, the applicant is considering designing a long-life magneto that can improve the accuracy and reliability of signal detection. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to provide a long-life magneto that can improve the accuracy and reliability of signal detection.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A long-life magneto includes a rotor housing. One axial end of the rotor housing has a rotor mounting groove, and the opposite end is a bearing mounting end. A magnetic tile is fixedly installed on the inner side wall of the rotor mounting groove. A signal disk is provided on the outer side wall of the rotor housing. The signal disk is located near the outer edge of the bearing mounting end, and there is an axial gap between the magnetic tile side and the signal disk.

[0006] The working principle and advantages of this long-life magneto are as follows: When the rotor housing rotates, the signal disk on its outer wall near the bearing mounting end rotates synchronously. The stationary sensor reads the signal by detecting the alternating changes in the teeth and grooves on the signal disk. An axial gap is formed between one side of the magnetic tile and the end face of the signal disk, and the signal disk and the magnetic tile are offset axially, which greatly reduces the direct interference of the strong magnetic field of the magnetic tile below. By setting the axial gap, the signal disk is kept away from the magnetic field interference area of ​​the magnetic tile, which ensures that the sensor can collect clearer and more accurate position signals, minimizes abnormal operating conditions caused by signal reading errors, and thus improves the reliability and service life of the magneto and even the entire engine system.

[0007] Furthermore, the signal disk includes a plurality of signal teeth spaced apart.

[0008] Furthermore, a limiting protrusion is integrally formed with the bearing mounting end on the outer wall of the rotor housing, and a bearing assembly mounting space is formed within the limiting protrusion.

[0009] Furthermore, the bearing mounting end is provided with a heat dissipation ring groove located radially outside the limiting convex ring.

[0010] Furthermore, the rotor housing bearing mounting end is provided with a heat dissipation hole that connects it with the rotor mounting groove. The heat dissipation hole extends into the limiting protrusion and the heat dissipation ring groove, and the heat dissipation hole penetrates the axial thickness of the limiting protrusion.

[0011] Furthermore, it also includes a bearing assembly comprising a bearing housing and a bearing detachably connected thereto within the mounting space.

[0012] Furthermore, a heat dissipation channel is provided on the side of the bearing housing near the bearing mounting end, and the heat dissipation channel includes a transverse section that penetrates the inner and outer side walls of the bearing housing.

[0013] Furthermore, the heat dissipation channel includes a vertical section communicating with the transverse section, the vertical section being formed on the outer wall of the bearing housing.

[0014] Furthermore, the transverse segment and the vertical segment at least partially overlap with the heat dissipation hole in the axial direction.

[0015] Furthermore, the rotor housing bearing mounting end is provided with multiple connecting through holes that connect it to the rotor mounting slot, and the bearing seat is provided with multiple connecting screw holes that correspond one-to-one with the connecting through holes. The connecting bolts pass through the connecting through holes and are threadedly connected to the connecting screw holes. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the rotor housing according to an embodiment of the present utility model; Figure 2 This is a three-dimensional structural diagram of the rotor housing and bearing assembly according to an embodiment of the present utility model; Figure 3 This is a three-dimensional structural diagram of the bearing housing according to an embodiment of the present utility model; Figure 4 This is a three-dimensional structural diagram of the rotor housing, bearing assembly, and sensor according to an embodiment of the present utility model; Figure 5 This is a cross-sectional structural diagram of the rotor housing, bearing assembly, and stator according to an embodiment of the present utility model; In the above attached figures: 100. Rotor housing; 101. Rotor mounting slot; 102. Bearing mounting end; 110. Restricting convex ring; 120. Heat dissipation hole; 130. Heat dissipation ring groove; 140. Connection through hole; 150. Signal disk; 151. Signal tooth; 160. Magnet tile; 200, Bearing housing; 210, Connecting screw hole; 220, Horizontal section; 221, Vertical section; 300. Bearings; 400. Connecting bolts.

[0017] 500. Stator. Detailed Implementation

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Refer to together Figure 1 , Figure 2 and Figure 4 This embodiment provides a long-life magneto, including a rotor housing 100. One axial end of the rotor housing 100 is provided with a rotor mounting groove 101, and the other end is a bearing mounting end 102. A magnet 160 is fixedly installed on the inner side wall of the rotor mounting groove 101. A signal disk 150 is provided on the outer side wall of the rotor housing 100. The signal disk 150 is located near the outer edge of the bearing mounting end 102. There is an axial gap between one side of the magnet 160 and the signal disk 150.

[0020] In this embodiment, when the rotor housing 100 rotates, the signal disk 150 on its outer side wall near the bearing mounting end 102 rotates synchronously. The stationary sensor reads the signal by detecting the alternating changes in the teeth and grooves on the signal disk 150. An axial gap is formed between one side of the magnetic tile 160 and the end face of the signal disk 150, and the signal disk 150 and the magnetic tile 160 are axially offset, thereby greatly reducing the direct interference from the strong magnetic field of the lower magnetic tile 160. By setting the axial gap, the signal disk 150 is kept away from the magnetic field interference area of ​​the magnetic tile 160, so as to ensure that the sensor can collect a clearer and more accurate position signal, and minimize the abnormal operating conditions caused by signal reading errors, thereby improving the reliability and service life of the magneto and even the entire engine system.

[0021] Preferably, such as Figure 1 and Figure 2 As shown, the signal disk 150 includes multiple spaced signal teeth 151; the alternating tooth structure is compatible with various types of sensors and electronic control systems on the market, and has strong adaptability.

[0022] Preferably, such as Figure 1 and Figure 2 As shown, the bearing mounting end 102 on the outer wall of the rotor housing 100 is provided with an integrally formed limiting protrusion 110, which forms a bearing 300 assembly mounting space. When the bearing 300 assembly is installed in the mounting space, the integrally formed limiting protrusion 110 forms a reliable limiting structure. The limiting protrusion 110 can directly bear the force from the bearing 300 assembly. Since the protrusion and the rotor housing 100 are an inseparable whole, the force from the bearing 300 assembly is evenly distributed and borne by the rotor housing 100, ensuring the stability and accuracy of the transmission connection. It eliminates the need for separate locking nuts, retaining rings and other additional fasteners, reducing assembly complexity, reducing the number of parts, saving the raw material and processing costs of additional fasteners, improving production efficiency and product consistency, eliminating potential faults caused by loose, detached or damaged additional parts, and improving the overall structural strength, rigidity and operational reliability of the magneto.

[0023] Preferably, such as Figure 1 and Figure 2 As shown, the bearing mounting end 102 has a heat dissipation ring groove 130 located radially outside the limiting protrusion ring 110; the heat dissipation ring groove 130 increases the effective surface area of ​​the rotor housing 100 in contact with the air, which can dissipate heat more quickly.

[0024] Preferably, such as Figure 1 and Figure 2 As shown, the rotor housing 100 bearing mounting end 102 has a heat dissipation hole 120 connecting it to the rotor mounting groove 101. The heat dissipation hole 120 extends into the limiting protrusion 110 and the heat dissipation ring groove 130, and penetrates the axial thickness of the limiting protrusion 110. During the operation of the magneto, the rotor housing 100 rotates at high speed, and the magnets 160 and stator 500 in the rotor mounting groove 101 inside it will generate a large amount of heat due to electromagnetic effect and current action. The heat dissipation hole 120 penetrates the rotor mounting groove 101, the inner side of the mounting space and the heat dissipation ring groove 130, forming an efficient heat dissipation channel, which allows fluid to pass through quickly and perform heat exchange, especially for oil bath type magneto. It can effectively alleviate the heat accumulation inside the rotor mounting groove 101 and the mounting space, and help improve the working efficiency and life of the motor.

[0025] Preferably, such as Figures 2 to 5As shown, a heat dissipation channel is provided on the side of the bearing housing 200 near the bearing mounting end 102. The heat dissipation channel includes a transverse section 220 that penetrates the inner and outer walls of the bearing housing 200; the heat dissipation channel also includes a vertical section 221 that communicates with the transverse section 220 and is located on the outer wall of the bearing housing 200. The transverse section 220 establishes a shortest channel between the inner and outer walls of the bearing housing 200, allowing fluid to pass through the bearing housing 200 body for heat exchange, thus alleviating the frictional and conductive heat generated by the bearing 300 assembly. The vertical section 221 increases the area of ​​the heat dissipation channel and changes the flow direction of the fluid in the transverse section 220, which helps the fluid to diffuse and thus enhances the convective heat transfer effect. It can effectively alleviate the heat accumulation in the rotor mounting slot 101 and the mounting space, and help improve the working efficiency and life of the motor.

[0026] Preferably, such as Figures 2 to 5 As shown, the transverse section 220 and the vertical section 221 overlap at least partially with the heat dissipation hole 120 in the axial direction; the heat dissipation channel on the bearing housing 200 and the heat dissipation hole 120 on the rotor housing 100 are combined and work together to allow the fluid to pass through the heat dissipation hole 120 and the heat dissipation channel at the same time, further improving the convective heat transfer effect; it can effectively alleviate the heat accumulation inside the rotor mounting slot 101 and the mounting space, and help improve the working efficiency and life of the motor.

[0027] Preferably, such as Figures 2 to 5 As shown, it also includes a bearing 300 assembly, which includes a bearing housing 200 and a bearing 300 detachably connected therein. The bearing housing 200 is detachably connected within the installation space. The bearing mounting end 102 of the rotor housing 100 has multiple connecting through holes 140 that connect it to the rotor mounting groove 101. The bearing housing 200 has multiple connecting screw holes 210 that correspond one-to-one with the connecting through holes 140. The connecting bolts 400 pass through the connecting through holes 140 and are threaded into the connecting screw holes 210. The bearing 300 can be directly removed from or installed from the bearing housing 200, facilitating independent replacement, maintenance, or lubrication of the bearing 300. The bearing housing 200 and the rotor housing 100 are connected by the connecting bolts 400, facilitating the replacement and maintenance of the bearing housing 200.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A long-life magneto motor, comprising a rotor housing, wherein a rotor mounting groove is formed at one axial end of the rotor housing, and a bearing mounting end is formed at the opposite end; a magnetic tile is fixedly mounted on the inner sidewall of the rotor mounting groove, characterized in that, A signal disk is provided on the outer wall of the rotor housing. The signal disk is located near the outer edge of the bearing mounting end, and there is an axial gap between the magnetic tile side and the signal disk.

2. The long-life magneto as described in claim 1, characterized in that, The signal disk includes multiple signal teeth spaced apart.

3. A long-life magneto as described in claim 1, characterized in that, The bearing mounting end on the outer wall of the rotor housing is provided with an integrally formed limiting protrusion ring, and a bearing assembly mounting space is formed inside the limiting protrusion ring.

4. A long-life magneto as described in claim 3, characterized in that, The bearing mounting end has a heat dissipation ring groove located radially outside the limiting convex ring.

5. A long-life magneto as described in claim 4, characterized in that, The rotor housing bearing mounting end is provided with a heat dissipation hole that connects it to the rotor mounting groove. The heat dissipation hole extends into the limiting convex ring and the heat dissipation ring groove, and the heat dissipation hole penetrates the axial thickness of the limiting convex ring.

6. A long-life magneto as described in claim 5, characterized in that, It also includes a bearing assembly, which includes a bearing housing and a bearing detachably connected thereto within the mounting space.

7. A long-life magneto as described in claim 6, characterized in that, The bearing housing has a heat dissipation channel on the side near the bearing mounting end, and the heat dissipation channel includes a transverse section that penetrates the inner and outer side walls of the bearing housing.

8. A long-life magneto as described in claim 7, characterized in that, The heat dissipation channel includes a vertical section that communicates with the horizontal section, and the vertical section is formed on the outer wall of the bearing housing.

9. A long-life magneto as described in claim 8, characterized in that, The horizontal segment and the vertical segment overlap at least partially with the heat dissipation hole in the axial direction.

10. A long-life magneto as described in claim 6, characterized in that, The rotor housing bearing mounting end has multiple connecting through holes that connect it to the rotor mounting slot. The bearing seat has multiple connecting screw holes that correspond one-to-one with the connecting through holes. The connecting bolts pass through the connecting through holes and are threaded into the connecting screw holes.

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