A magneto harness structure for an engine

Abstract

The present invention provides a magneto harness structure for an engine, which belongs to the field of engine technology. It solves the technical problem of poor stability of the magneto harness structure of the existing engine. The magneto harness structure of the engine includes a housing and an end cover for protecting the flywheel and the magneto, the end cover is buckled on the outer wall of the housing, the harness structure includes a wire pressing plate and mounting posts and positioning pins protruding from the bottom surface of the end cover inner cavity and arranged at intervals, the mounting posts are close to the circumferential side walls of the end cover inner cavity and form a harness groove for accommodating the magneto harness, the wire pressing plate is located at the open part of the harness groove and covers the harness groove, one end of the wire pressing plate is fixedly connected to the mounting post, and the other end of the wire pressing plate cooperates with the positioning pin along the radial limit of the positioning pin. The present invention can improve the stability of the constrained positioning of the magneto harness.

Description

Technical Field

[0001] The invention belongs to the technical field of engines and relates to a magneto harness structure of an engine. Background Art

[0002] The magneto is the generator of the engine. The magneto is a small AC generator that uses permanent magnets to generate a magnetic field. It is the ignition power source in the gasoline engine ignition system. The magneto ignition system consists of a switch, an ignition coil, a breaker, a capacitor, a distributor, and a safety discharge device. It generates high voltage electricity and generates spark plugs distributed to each cylinder. The flywheel magneto is a magnet installed on the flywheel of the internal combustion engine. The stable transmission of the current generated by the magneto requires the reasonable arrangement of the magneto wiring harness and the stability of its position.

[0003] A Chinese patent with authorization announcement number CN201781234U discloses a wire harness fixing bracket and an engine wire harness fixing structure including the bracket, wherein the wire harness fixing bracket includes a bracket body and at least two cover plates, the bracket body is provided with a groove in the same extension direction as the bracket body, the at least two cover plates are arranged sequentially along the extension direction of the bracket body and cover the opening of the groove, one side edge of each cover plate is rotatably connected to a side wall of the groove, and the other side edge of each cover plate is connected to the other side wall of the groove by a snap mechanism.

[0004] The above scheme provides a scheme to improve the efficiency of wiring harness by fitting the bracket with grooves with the engine surface by snapping, but the magneto wiring harness is located inside the engine end cover and close to the high-speed rotating flywheel structure, which is easily affected by vibration. The above scheme is not stable enough and has great safety hazards. To solve the above problems, ordinary technicians in this field generally consider the following: 1. Compress the movement space of the wiring harness as much as possible to avoid the movement of the wiring harness, such as covering the adhesive along the length direction of the wiring harness; 2. Avoid arranging the wiring harness in the circumference of the flywheel to avoid accidents caused by the falling of the fastening components. Summary of the invention

[0005] In view of the above problems existing in the prior art, the present invention provides a magneto harness structure for an engine. The technical problem to be solved by the present invention is to improve the stability of the positioning of the magneto harness.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A magneto wiring harness structure for an engine, the engine comprising a housing and an end cover for protecting a flywheel and a magneto, the end cover being buckled on the outer side wall of the housing, and characterized in that the wiring harness structure comprises a wire pressing plate and mounting posts and locating pins protruding from the bottom surface of an inner cavity of the end cover and arranged at intervals, the mounting posts being close to the circumferential side walls of the inner cavity of the end cover and forming a wire harness groove for accommodating a magneto wiring harness between the mounting posts and the circumferential side walls of the inner cavity of the end cover, the wire pressing plate being located at an open portion of the wire harness groove and covering the wire harness groove, one end of the wire pressing plate being fixedly connected to the mounting post, and the other end of the wire pressing plate being engaged with the locating pin along the radial limit of the locating pin.

[0008] The housing is a supporting and protective component for the engine crankshaft, transmission and other components. The end cover is in the shape of a hollow shell and is buckled and fixedly connected to the side of the housing where the flywheel is installed, providing a sealed and protective environment for the flywheel and magneto. The wire harness structure includes a wire pressing plate, a mounting post and a positioning pin, so that the mounting post and the circumferential side wall of the inner cavity of the end cover form a wire harness groove, and the wire pressing plate covers the wire harness groove. In this way, a wire harness groove is formed between the mounting post originally used to install the wire pressing plate and the side wall of the inner cavity of the end cover, so that the wire pressing plate can be installed nearby while avoiding direct grooving on the side wall of the inner cavity of the end cover to reduce the strength, thereby ensuring the stability of the surrounding environment of the magnetic motor wiring harness. The wiring harness can be constrained in the area between the wire harness groove and the wire pressing plate during assembly, so that the wiring harness can be arranged along the inner cavity side wall of the end cover while constraining the outer periphery of the wiring harness. One end of the wire pressing plate is fixedly connected to the mounting post, and the other end of the wire pressing plate is matched with the positioning pin along the radial limit of the positioning pin. In this way, the wire pressing plate used to limit the position of the wiring harness will not deflect and move around the mounting post at will after being vibrated by the whole vehicle or the engine, thereby avoiding loosening of the connection between the wire pressing plate and the mounting post after deflection, thereby improving the stability of the constraint and positioning of the magnetic motor wiring harness.

[0009] In the magneto harness structure of the above-mentioned engine, the wire pressing plate includes a fixed section, a main section and a positioning section connected in sequence, the fixed section is bent relative to the main section toward the side where the harness groove is located, the fixed section is fixedly connected to the top of the mounting column, and the positioning section is bent relative to the main section toward the other side, the positioning section has a positioning hole, and the positioning pin is positioned and matched with the positioning hole. By setting the wire pressing plate to include a fixed section, a main section and a positioning section connected in sequence, the fixed section is bent toward the side where the harness groove is located, and the positioning section is bent toward the other side, so that the entire wire pressing plate is in a Z shape, and the fixed section and the positioning section are arranged at both ends of the harness groove to provide better constraints and protection for the magneto harness arrangement and steering, and further improve the stability of the constraint positioning of the magneto harness; at the same time, the positioning hole and the positioning pin matching structure are simple and reliable, which is conducive to ensuring positioning stability.

[0010] In the magneto harness structure of the above-mentioned engine, the surface of one side of the mounting column close to the main body section is in the shape of a gradually shrinking cone from bottom to top, the inner side wall of the main body section abuts against the outer peripheral surface of the mounting column, and the locating pin abuts against the inner edge of the locating hole on one side close to the mounting column. The cam is then pressed against the outer circumference of the mounting post so that the locking pin is in contact with the locking cam and the locking cam is in contact with the locking cam, thereby securing the locking cam to the locking cam.

[0011] In the magneto harness structure of the above-mentioned engine, the positioning hole is located at the edge of the positioning section, and the positioning hole is an arc-shaped notch groove. By setting the positioning hole at the edge of the positioning section and being an arc-shaped notch groove, a larger gap can be formed between the positioning hole and the positioning pin before they are tightened. For the wire pressing plate with higher tightening requirements, the size and deformation degree of the large end of its mounting column are greater. The through-hole positioning hole structure makes it difficult for the wire pressing plate to be directly installed in place. However, this structure can make the wire pressing plate deflect at an angle to form a preliminary positioning of the positioning hole and the positioning pin, greatly improving the convenience of assembly and facilitating the stable restraining effect of the wire pressing plate.

[0012] In the magneto harness structure of the above-mentioned engine, the edge of the wire pressing plate close to the circumferential side wall of the inner cavity of the end cover has a plurality of spaced limiting claws, and the limiting claws are bent relative to the wire pressing plate toward the side where the harness groove is located. By providing a plurality of spaced limiting claws on the edge of the wire pressing plate close to the circumferential side wall of the inner cavity of the end cover, the limiting claws are bent relative to the wire pressing plate toward the side where the harness groove is located, so that the limiting claws can fill the space between the wire pressing plate and the circumferential side wall of the inner cavity of the end cover, and at the same time avoid the problem that the harness is more easily stretched out and disengaged when the wire pressing plate forms an acute angle with the circumferential side wall of the inner cavity of the end cover, thereby improving the stability of the constrained positioning of the magneto harness.

[0013] In the magneto harness structure of the above-mentioned engine, the circumferential side wall of the inner cavity of the end cover has a convex ridge with an arc-shaped outer circumference, the setting direction of the convex ridge is consistent with the setting direction of the mounting column, and the end of the limiting claw can abut against the outer circumferential surface of the convex ridge. By setting the convex ridge with an arc-shaped outer circumference on the circumferential side wall of the inner cavity of the end cover, the setting direction of the convex ridge is consistent with the setting direction of the mounting column, so that the convex ridge can cooperate with the mounting column to reduce the open size of the harness groove, which is conducive to improving the stability of the wiring harness position, and the end of the limiting claw is set to abut against the outer circumferential surface of the convex ridge, so that the sharp edge corner of the end of the limiting claw is touched by the rounded convex ridge surface, reducing the probability of it causing damage to the wiring harness.

[0014] In the magneto harness structure of the engine, the side surface of the mounting post away from the body section is engaged with the circumferential side wall of the end cover inner cavity. By setting the side surface of the mounting post away from the body section to be engaged with the circumferential side wall of the end cover inner cavity, it is beneficial to improve the sealing property and structural strength of the harness groove between the mounting post and the circumferential side wall of the end cover inner cavity, and further improve the stability of the constrained positioning of the magneto harness.

[0015] In the magneto harness structure of the above-mentioned engine, the inner cavity bottom surface of the end cover has a raised limiting rib, one end of the limiting rib is engaged with the convex ridge, and a harness channel for the magneto harness is formed between the limiting rib, the positioning pin and the positioning section, and the harness channel is connected with the harness groove. By arranging a raised limiting rib on the inner cavity bottom surface of the end cover, one end of the limiting rib is engaged with the convex ridge, and a harness channel is formed between the limiting rib, the positioning pin and the positioning section, so that the harness channel is connected with the harness groove. In this way, the limiting rib can improve the strength of the end cover and cooperate with the limiting pin and the positioning section to initially constrain the harness located on the inner cavity bottom surface of the end cover, thereby ensuring its stability in the partial position bent to the harness groove.

[0016] In the magneto harness structure of the above-mentioned engine, a wire outlet hole is provided at the side edge of the end cover, and the wire outlet hole is located at one end of the harness slot near the fixed section, and a clearance gap is provided at the edge of the fixed section near the wire outlet hole for the magneto harness to pass through. By providing the wire outlet hole at the side edge of the end cover and providing the wire outlet hole at one end of the harness slot near the fixed section, the magneto harness can extend through the wire outlet hole and communicate with external components, and will be further positioned at the wire outlet hole, so that the harness near the wire outlet hole is not easy to swing and the position is more stable. This place is clamped and constrained with the large end of the mounting column to form a match to ensure that the harness between the two will not have a large range of movement; a clearance gap is provided at the edge of the fixed section near the wire outlet hole, which is conducive to the harness passing through the wire outlet hole smoothly and avoiding interference with the fixed section and damage.

[0017] In the magneto harness structure of the engine, the joint of the positioning section and the body section is chamfered and bent. By setting the joint of the positioning section and the body section to be chamfered and bent, the harness will not be damaged by sharp scratches when the harness contacts the inner side of the wire pressing plate in this area, thereby ensuring stability and safety in use.

[0018] Compared with the prior art, the advantages of the present invention are as follows:

[0019] The magneto wiring harness structure of the engine is fixedly connected to the mounting column by setting one end of the wire pressing plate, and the other end of the wire pressing plate is matched with the locating pin along the radial limit of the locating pin. In this way, the wire pressing plate used to limit the position of the wiring harness will not deflect and move around the mounting column at will after being vibrated by the whole vehicle or the engine, thereby avoiding the loosening of the connection between the wire pressing plate and the mounting column after the deflection, thereby improving the stability of the constraint positioning of the magneto wiring harness. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of this embodiment.

[0021] Figure 2 It is a schematic diagram of the partial explosion structure of this embodiment.

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the coordination between the end cover and the magneto wiring harness in this embodiment.

[0023] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure.

[0024] Figure 5 yes Figure 4 Enlarged view of part A in .

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the end cover and the wire pressing plate in this embodiment.

[0026] Figure 7 yes Figure 6 Schematic diagram of the cross-sectional structure.

[0027] Figure 8 Schematic diagram of the three-dimensional structure of the end cover in this embodiment.

[0028] Fig. 9 Schematic diagram of the three-dimensional structure of the wire pressing plate in this embodiment.

[0029] In the figure, 1. box body;

[0030] 2. End cover; 21. Mounting column; 22. Positioning pin; 23. Cable duct; 24. Raised edge; 25. Limiting rib; 26. Cable outlet hole;

[0031] 3. Pressing plate; 31. Fixed section; 311. Notch; 32. Main section; 33. Positioning section; 331. Positioning hole; 34. Limiting claw;

[0032] 4. Wiring channel. DETAILED DESCRIPTION

[0033] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0034] like Figure 1-9As shown, in the magneto harness structure of the present engine, the engine includes a housing 1 and an end cover 2 for protecting the flywheel and the magneto, the end cover 2 is buckled on the outer wall of the housing 1, the harness structure includes a wire pressing plate 3 and mounting posts 21 and positioning pins 22 protruding from the bottom surface of the inner cavity of the end cover 2 and arranged at intervals, the mounting posts 21 are close to the circumferential side walls of the inner cavity of the end cover 2 and form a harness groove 23 for accommodating the magneto harness with the circumferential side walls of the inner cavity of the end cover 2, the wire pressing plate 3 is located at the open part of the harness groove 23 and covers the harness groove 23, one end of the wire pressing plate 3 is fixedly connected to the mounting post 21 by bolts, and the other end of the wire pressing plate 3 is matched with the positioning pin 22 along the radial limit of the positioning pin 22. The housing 1 is a supporting and protective component for components such as the engine crankshaft and the transmission, and the end cover 2 is in the shape of a hollow shell and is buckled and fixedly connected to the side of the housing 1 where the flywheel is installed, providing a sealing and protective environment for the flywheel and the magneto. A wiring harness structure is provided including a wire pressing plate 3, a mounting post 21 and a positioning pin 22, so that the mounting post 21 and the circumferential side wall of the inner cavity of the end cover 2 form a wire harness groove 23, and the wire pressing plate 3 covers the wire harness groove 23, so that the wire harness used for electrical conduction of the magnetic motor can be constrained in the area between the wire harness groove 23 and the wire pressing plate 3 during assembly, so that the wire harness can be arranged along the inner cavity side wall of the end cover 2 while constraining the outer periphery of the wire harness, and one end of the wire pressing plate 3 is fixedly connected to the mounting post 21, and the other end of the wire pressing plate 3 is matched with the positioning pin 22 along the radial limit of the positioning pin 22, so that the wire pressing plate 3 used to limit the position of the wire harness will not deflect and move around the mounting post 21 at will after being vibrated by the whole vehicle or the engine, so as to avoid the loosening of the bolt connection between the wire pressing plate 3 and the mounting post 21 after the deflection, thereby improving the stability of the constrained positioning of the magnetic motor wiring harness. Specifically, the wire pressing plate 3 includes a fixed section 31, a main section 32 and a positioning section 33 connected in sequence. The fixed section 31 is bent relative to the main section 32 toward the side where the wire harness groove 23 is located. The fixed section 31 is fixedly connected to the top of the mounting column 21. The positioning section 33 is bent relative to the main section 32 toward the other side. The positioning section 33 has a positioning hole 331, and the positioning pin 22 is positioned and matched with the positioning hole 331. By setting the wire pressing plate 3 to include a fixed section 31, a main section 32 and a positioning section 33 connected in sequence, the fixed section 31 is bent toward the side where the wire harness groove 23 is located, and the positioning section 33 is bent toward the other side. In this way, the entire wire pressing plate 3 is in a Z shape. The fixed section 31 and the positioning section 33 are arranged at both ends of the wire harness groove 23 to provide better constraints and protection for the arrangement and steering of the magnetic motor harness, and further improve the stability of the constraint and positioning of the magnetic motor harness; at the same time, the matching structure of the positioning hole 331 and the positioning pin 22 is simple and reliable, which is conducive to ensuring the positioning stability. Preferably, the surface of one side of the mounting column 21 close to the main body section 32 is in the shape of a gradually shrinking cone from bottom to top, the inner wall of the main body section 32 abuts against the outer peripheral surface of the mounting column 21, and the side of the positioning pin 22 close to the mounting column 21 abuts against the inner edge of the positioning hole 331.By setting the surface of one side of the mounting column 21 close to the body section 32 to gradually shrink from bottom to top, and making the inner side wall of the body section 32 abut against the outer peripheral surface of the mounting column 21, and the side of the positioning pin 22 close to the mounting column 21 abuts against the inner edge of the positioning hole 331, so that when assembling the wire pressing plate 3, the positioning hole 331 on the positioning section 33 can be matched with the positioning pin 22, and a matching gap will be retained between the positioning pin 22 and the inner edge of the positioning hole 331, and then force is applied to align the connection position of the fixing section 31 with the small end of the mounting column 21 At this time, the gap between the inner edge of the positioning hole 331 and the positioning pin 22 is eliminated to form abutment, and the inner side of the body section 32 forms abutment with the outer peripheral surface of the large end of the mounting column 21. It can adjust the abutment position with the mounting column 21 according to the force and deformation conditions, and finally ensure that the entire wire pressing plate 3 forms a stable pressing state through at least three abutment points. Even if the wire pressing plate 3 is affected by vibration or the force of the wire harness during operation, it is difficult to move and displace, which greatly improves the stability of the constrained positioning of the magnetic motor harness. The side edge of the end cover 2 has a wire outlet hole 26, which is located at one end of the wire harness slot 23 close to the fixed section 31, and the edge of the fixed section 31 close to the wire outlet hole 26 has a clearance gap 311 for the magnetic motor harness to pass through. By setting a wire outlet hole 26 at the side edge of the end cover 2 and setting the wire outlet hole 26 at one end of the wire harness slot 23 near the fixed section 31, the wire harness of the magneto can extend through the wire outlet hole 26 and communicate with external components, and will be further positioned at the wire outlet hole 26, so that the wire harness near the wire outlet hole 26 is not easy to swing and the position is more stable. This place is clamped and constrained with the large end of the mounting column 21 to form a match to ensure that the wire harness between the two will not have a large range of movement; a clearance notch 311 is set at the edge of the fixed section 31 near the wire outlet hole 26, which is conducive to the smooth passage of the wire harness through the wire outlet hole 26 and avoids interference with the fixed section 31 and damage. The outer peripheral surface of the mounting column 21 is engaged with the circumferential side wall of the inner cavity of the end cover 2. By setting the side surface of the mounting column 21 away from the body section 32 to engage with the circumferential side wall of the inner cavity of the end cover 2, it is conducive to improving the closedness of the wire harness slot 23 and the structural strength of the side wall, and further improving the stability of the constrained positioning of the magneto wire harness. The positioning hole 331 is located at the edge of the positioning section 33, and the positioning hole 331 is in the shape of a notch. By setting the positioning hole 331 at the edge of the positioning section 33 and in the shape of a semicircular notch groove, a larger gap can be formed between the positioning hole 331 and the positioning pin 22 before they are tightened. For the wire pressing plate 3 with higher tightening requirements, the size and deformation degree of the large end of its mounting column 21 are larger. The through-hole-shaped positioning hole 331 structure makes it difficult for the wire pressing plate 3 to be directly installed in place. However, this structure can make the wire pressing plate 3 deflect at an angle to form the initial positioning of the positioning hole 331 and the positioning pin 22, greatly improving the convenience of assembly and ensuring the stable restraining effect of the wire pressing plate 3.

[0035] like Figure 3 , Figure 6-9As shown, the edge of the wire pressing plate 3 close to the circumferential side wall of the inner cavity of the end cover 2 has three spaced limiting claws 34, and the limiting claws 34 are bent relative to the wire pressing plate 3 toward the side where the wire harness groove 23 is located. By setting three spaced limiting claws 34 on the edge of the wire pressing plate 3 close to the circumferential side wall of the inner cavity of the end cover 2, the limiting claws 34 are bent relative to the wire pressing plate 3 toward the side where the wire harness groove 23 is located, so that the limiting claws 34 can fill the space between the wire pressing plate 3 and the circumferential side wall of the inner cavity of the end cover 2, and at the same time avoid the problem that the wire harness is more likely to be stretched out and disengaged when the wire pressing plate 3 forms an acute angle with the circumferential side wall of the inner cavity of the end cover 2, thereby improving the stability of the constrained positioning of the magnetic motor harness. Further, the circumferential side wall of the inner cavity of the end cover 2 has a convex ridge 24 with an arc surface on the outer periphery, and the setting direction of the convex ridge 24 is consistent with the setting direction of the mounting column 21, and the end of the limiting claw 34 can abut against the outer peripheral surface of the convex ridge 24. By providing a convex ridge 24 with an arc-shaped outer circumference on the circumferential side wall of the inner cavity of the end cover 2, the setting direction of the convex ridge 24 is consistent with the setting direction of the mounting column 21, so that the convex ridge 24 can cooperate with the mounting column 21 to reduce the open size of the wiring groove 23, which is beneficial to improve the stability of the wiring harness position, and the end of the limiting claw 34 can be abutted against the outer circumferential surface of the convex ridge 24, so that the sharp edge corner of the end of the limiting claw 34 is touched to the rounded surface of the convex ridge 24, reducing the probability of it causing damage to the wiring harness.

[0036] like Figure 3-8 As shown, the inner cavity bottom surface of the end cover 2 has a raised limiting rib 25, one end of which is engaged with the convex rib 24, and a wire channel 4 for the magneto wire harness to pass through is formed between the limiting rib 25, the positioning pin 22 and the positioning section 33, and the wire channel 4 is connected to the wire channel 23. By arranging the raised limiting rib 25 on the inner cavity bottom surface of the end cover 2, one end of the limiting rib 25 is engaged with the convex rib 24, and a wire channel 4 is formed between the limiting rib 25, the positioning pin 22 and the positioning section 33, so that the wire channel 4 is connected to the wire channel 23, so that the limiting rib 25 can improve the strength of the end cover 2 and cooperate with the limiting pin and the positioning section 33 to initially constrain the wire harness located on the inner cavity bottom surface of the end cover 2, thereby ensuring that the wire harness is stable in the partial position bent to the wire channel 23. The joint between the positioning section 33 and the body section 32 is chamfered and bent. By setting the joint of the positioning section 33 and the main body section 32 to be chamfered and bent, the wire harness will not be damaged by sharp scratches when it contacts the inner side of the wire pressing plate 3 in this area, thereby ensuring stability and safety in use.

[0037] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A magneto harness structure for an engine, the engine comprising a housing (1) and an end cover (2) for protecting a flywheel and a magneto, the end cover (2) being buckled on an outer side wall of the housing (1), characterized in that: The wire harness structure comprises a wire pressing plate (3) and mounting posts (21) and positioning pins (22) protruding from the bottom surface of the inner cavity of the end cover (2) and arranged at intervals. The mounting posts (21) are close to the circumferential side walls of the inner cavity of the end cover (2) and form a wire harness groove (23) for accommodating the magnetic motor wire harness between the mounting posts (21) and the circumferential side walls of the inner cavity of the end cover (2). The wire pressing plate (3) is located at the open part of the wire harness groove (23) and covers the wire harness groove (23). One end of the wire pressing plate (3) is fixedly connected to the mounting posts (21), and the other end of the wire pressing plate (3) is matched with the positioning pin (22) along the radial limit of the positioning pin (22).

2. The magnetic motor harness structure of the engine according to claim 1, characterized in that: The wire pressing plate (3) comprises a fixing section (31), a main section (32) and a positioning section (33) which are connected in sequence. The fixing section (31) is bent relative to the main section (32) toward the side where the wire harness groove (23) is located. The fixing section (31) is fixedly connected to the top of the mounting column (21). The positioning section (33) is bent relative to the main section (32) toward the other side. A positioning hole (331) is provided on the positioning section (33). The positioning pin (22) is positioned and matched with the positioning hole (331).

3. The magnetic motor harness structure of the engine according to claim 2, characterized in that: The surface of one side of the mounting column (21) close to the main body section (32) is in the shape of a tapered surface that gradually contracts from the bottom to the top, the inner side wall of the main body section (32) abuts against the outer peripheral surface of the mounting column (21), and the side of the positioning pin (22) close to the mounting column (21) abuts against the inner edge of the positioning hole (331).

4. The magnetic motor harness structure of the engine according to claim 3, characterized in that: The positioning hole (331) is located at the edge of the positioning section (33), and the positioning hole (331) is an arc-shaped notch groove.

5. The magnetic motor harness structure of the engine according to claim 2, 3 or 4, characterized in that: The edge of one side of the wire pressing plate (3) close to the circumferential side wall of the inner cavity of the end cover (2) has a plurality of spaced-apart limiting claws (34), and the limiting claws (34) are bent relative to the wire pressing plate (3) toward the side where the wire harness groove (23) is located.

6. The magnetic motor harness structure of the engine according to claim 5, characterized in that: The circumferential side wall of the inner cavity of the end cover (2) has a convex ridge (24) with an arc-shaped outer circumference, the setting direction of the convex ridge (24) is consistent with the setting direction of the mounting column (21), and the end of the limiting claw (34) can abut against the outer circumferential surface of the convex ridge (24).

7. The magnetic motor harness structure of the engine according to claim 2, 3 or 4, characterized in that: A side surface of the mounting column (21) away from the main body section (32) is engaged with a circumferential side wall of the inner cavity of the end cover (2).

8. The magnetic motor harness structure of the engine according to claim 6, characterized in that: The inner cavity bottom surface of the end cover (2) has a raised limiting rib (25), one end of which is engaged with the convex edge (24), and a wire harness channel (4) for the magnetic motor wire harness to pass through is formed between the limiting rib (25), the positioning pin (22) and the positioning section (33), and the wire harness channel (4) is connected to the wire harness groove (23).

9. The magnetic motor harness structure of the engine according to claim 3 or 4, characterized in that: The side edge of the end cover (2) is provided with a wire outlet hole (26), the wire outlet hole (26) is located at one end of the wire harness groove (23) close to the fixed section (31), and the edge of the fixed section (31) close to the wire outlet hole (26) is provided with a clearance notch (311) for the magnetic motor wire harness to pass through.

10. The magnetic motor harness structure of the engine according to claim 2, 3 or 4, characterized in that: The joint between the positioning section (33) and the main body section (32) is subjected to chamfering and bending treatment.

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