Motorcycle engine protection plate

By combining a baffle, magnet, limiting strip, and torsion spring, the problem of unstable limiting of the motorcycle engine protection plate is solved, achieving stable shielding of the baffle and efficient heat dissipation of the protective net, thus enhancing the protection and heat dissipation effect of the motorcycle engine.

CN223644892UActive Publication Date: 2025-12-09TAIZHOU GANGSHENG MACHINERY CO LTD
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Patent Information

Application Number
CN202520226987.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-13
Publication Date
2025-12-09
Estimated Expiration
2035-02-13

AI Technical Summary

Technical Problem

Traditional motorcycle engine guards use magnetic caps, which are not very effective at keeping the cover in place. They are prone to detaching during bumpy rides, and the magnets are easily damaged, affecting oil drainage and engine protection.

Method used

The design employs a combination of baffles, magnets, limiting strips, and torsion springs. The torsion springs continuously apply force to block the oil drain hole, and the combination of the limiting strips and magnets ensures that the baffles automatically close during vibration. The opening and closing of the baffles can also be manually controlled. The bottom and side guard plates are fixed by bolts, and the protective net is set at an angle for heat dissipation and protection.

Benefits of technology

The system achieves stable shielding under vibration conditions, preventing oil discharge interference and enhancing engine protection. The design of the protective mesh also improves heat dissipation efficiency and structural stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a motorcycle engine protection plate, which relates to the technical field of motorcycle accessories and comprises a bottom protection plate, an oil discharge hole and a baffle are respectively arranged at the bottom of the bottom protection plate, a torsion spring is connected between the baffle and the bottom protection plate, and a magnet is connected to the top of the baffle. The two sides of the bottom of the bottom protection plate are connected with a first limiting strip and a second limiting strip correspondingly. Through the baffle, the magnet, the first limiting strip, the second limiting strip and the torsional spring, force is continuously applied to the baffle through the torsional spring, so that the baffle shields the oil discharge hole, when the baffle is opened due to vibration, the baffle can be closed in time through the torsional spring, the baffle abuts against the first limiting strip, and the situation that the rotation angle of the baffle is too large is avoided; when opening is needed, the baffle can be rotated by a large angle to compress the torsional spring, the baffle is limited through the second limiting strip during the period, and the bottom protection plate is attracted by the magnet to limit the baffle; and even if the baffle is forgotten to be closed, the baffle can be automatically closed through bumping and vibration subsequently.
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Description

Technical Field

[0001] This utility model relates to the field of motorcycle parts technology, specifically a motorcycle engine protection plate. Background Technology

[0002] Traditional gasoline-powered motorcycles also primarily use an internal combustion engine to generate power to drive the wheels and propel the vehicle. However, motorcycles differ from cars in that, due to their smaller size and compact structure, the engine is usually exposed outside the frame. To prevent damage to the engine from flying sand and gravel or impacts during riding, a protective plate is usually installed to protect the engine.

[0003] A motorcycle engine protection plate, with application number 202420889797.4, includes a protection plate body comprising a base plate, side plates, and symmetrically arranged first and second side edges. The side plates have multiple cooling grooves, and the base plate has an oil drain hole with a protective cover that matches the shape and size of the drain hole. This invention allows for engine cooling through the multiple cooling grooves on the side plates while also protecting the engine. The protective cover on the oil drain hole can be removed when oil needs changing, preventing oil from entering the engine during driving.

[0004] The protective cover connects to the magnet through magnetic attraction to achieve a limiting effect. However, the limiting ability is weak, and the protective cover can easily separate from the magnet when there are bumps. Subsequently, the magnetic attraction of the magnet brings the protective cover back into contact, which can easily cause collisions. Since magnets are usually a relatively brittle object, they can easily break and lose their limiting effect on the protective cover. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a motorcycle engine protection plate to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a motorcycle engine protection plate, including a bottom plate, wherein an oil drain hole and a baffle are respectively provided at the bottom of the bottom plate, and a torsion spring is connected between the baffle and the bottom plate, a magnet is connected to the top of the baffle, and a first limiting strip and a second limiting strip are respectively connected to the bottom sides of the bottom plate.

[0007] By adopting the above technical solution, when the motorcycle engine oil needs to be changed, the operator rotates the baffle at a large angle to compress the torsion spring. During this process, the baffle is limited by the second limiting strip, and the magnet attracts the bottom guard plate to limit the baffle, preventing the baffle from closing automatically and affecting the oil drainage. At this time, the operator can operate the motorcycle engine to drain the engine oil from the drain hole. After changing the oil, the operator reverses the baffle to restore the limitation on the drain hole. If the baffle is forgotten to be closed, the bumps and vibrations during driving, combined with the force applied by the torsion spring, will cause the baffle to rotate. When the magnet separates from the bottom guard plate, the torsion spring will drive the baffle to close. Afterward, the torsion spring will continue to apply force to the baffle, ensuring that the baffle always blocks the drain hole. If the vibration causes the baffle to open, the torsion spring can also close the baffle in time, and the baffle abuts against the first limiting strip to prevent the baffle from rotating too much.

[0008] Furthermore, the baffle is rotatably connected to the bottom guard plate, and the diameter of the baffle is larger than the diameter of the oil drain hole.

[0009] By adopting the above technical solution, the torsion spring continuously applies force to the baffle, so that the baffle always blocks the oil drain hole. When vibration causes the baffle to open, the torsion spring can also close the baffle in time.

[0010] Furthermore, the bottom protective plate is made of iron.

[0011] By adopting the above technical solution, when the engine oil of a motorcycle needs to be changed, the operator can rotate the baffle at a large angle. During this process, the magnet holds the bottom guard plate in place to limit the baffle and prevent it from closing automatically and affecting the oil drainage process.

[0012] Furthermore, the baffle abuts against the first limiting strip and the second limiting strip respectively.

[0013] By adopting the above technical solution, the baffle is in the open and closed state, and the first limit strip and the second limit strip prevent the baffle from rotating too much and damaging the torsion spring.

[0014] Furthermore, side guards are fixed on both sides of the bottom guard plate, and a first mounting hole is provided on the upper side of one side of the side guard plate, and a second mounting hole is provided on the bottom of the side guard plate.

[0015] By adopting the above technical solution, workers can connect the engine guard plate to the motorcycle frame or engine by passing bolts through the first and second mounting holes to form a protective barrier. The bottom guard plate and side guard plate prevent sand and gravel flying during driving from damaging the motorcycle engine, and can also provide a certain degree of protection in the event of a collision, reducing the damage to the motorcycle engine.

[0016] Furthermore, the bottom protective plate is internally connected with vertical ribs and horizontal ribs, and protective netting is connected to the back of the vertical ribs and horizontal ribs.

[0017] By adopting the above technical solution, during motorcycle operation, outside air can pass through the protective net and directly contact the motorcycle engine to facilitate engine cooling. The protective net prevents sand and gravel from passing through. The inclined design of the protective net allows impurities on its surface to fall off through the thrust of gravity and airflow, reducing the occurrence of clogging. Furthermore, the grid-like reinforcement structure formed by multiple vertical and horizontal ribs supports the protective net and prevents deformation, thus also providing protection and preventing large impurities from passing through. The longer length of the horizontal ribs and the larger contact area between them and the bottom guard plate further improve the stability of the structure.

[0018] Furthermore, the protective net is set at an angle.

[0019] By adopting the above technical solution, the inclined setting of the protective net facilitates the application of thrust through gravity and airflow to make impurities on the surface of the protective net fall off, reducing the occurrence of blockage in the protective net.

[0020] Furthermore, multiple vertical ribs and multiple horizontal ribs are provided, and the multiple vertical ribs are distributed perpendicularly to the multiple horizontal ribs.

[0021] By adopting the above technical solution, a grid-like reinforcement structure is formed by multiple vertical ribs and multiple horizontal ribs to support the protective net and prevent it from deforming. This also achieves the same protective effect and prevents large impurities from passing through.

[0022] Furthermore, the length of the transverse rib is equal to the width of the bottom guard plate, and the length of the transverse rib is greater than the length of the vertical rib.

[0023] By adopting the above technical solution, the transverse ribs are longer and the contact area between them and the bottom guard plate is larger, further improving the stability of the structure.

[0024] In summary, the present invention has the following main advantages:

[0025] This invention utilizes a baffle, a magnet, a first limiting strip, a second limiting strip, and a torsion spring. The torsion spring continuously applies force to the baffle, causing it to block the oil drain hole. If vibration causes the baffle to open, the torsion spring can promptly close it, and the baffle abuts against the first limiting strip to prevent excessive rotation. When it needs to be opened, the baffle can be rotated at a large angle to compress the torsion spring. During this process, the second limiting strip limits the baffle, and the magnet attracts the bottom guard plate to further limit the baffle, preventing it from automatically closing and affecting oil drainage. After changing the oil, reversing the baffle restores its limit on the oil drain hole. If the baffle is forgotten to be closed, bumps and vibrations during driving, combined with the force applied by the torsion spring, cause the baffle to rotate. Once the magnet separates from the bottom guard plate, the torsion spring drives the baffle to close. The design offers high stability and is not easily damaged; even if forgotten, subsequent bumps and vibrations will cause the baffle to close automatically. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is a bottom view of the structure of this utility model;

[0028] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0029] Figure 4 For the present utility model Figure 3 Enlarged view of the structure at point A in the image;

[0030] Figure 5 This is a schematic diagram of the baffle structure of this utility model.

[0031] In the diagram: 1. Bottom guard plate; 2. Side guard plate; 3. First mounting hole; 4. Second mounting hole; 5. Oil drain hole; 6. Vertical rib; 7. Horizontal rib; 8. Protective net; 9. Baffle; 10. Magnet; 11. First limiting strip; 12. Second limiting strip; 13. Torsion spring. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0033] The embodiments of this utility model will be described below based on its overall structure.

[0034] Example 1:

[0035] A motorcycle engine guard plate, such as Figures 1-5As shown, the system includes a bottom guard plate 1. The bottom of the bottom guard plate 1 has an oil drain hole 5 and a baffle 9, which are rotatably connected to the bottom guard plate 1. The diameter of the baffle 9 is larger than the diameter of the oil drain hole 5. A torsion spring 13 connects the baffle 9 and the bottom guard plate 1. A magnet 10 is connected to the top of the baffle 9. The bottom guard plate 1 is made of iron. A first limiting strip 11 and a second limiting strip 12 are connected to the bottom sides of the bottom of the bottom guard plate 1, respectively. The baffle 9 abuts against the first limiting strip 11 and the second limiting strip 12. When the motorcycle engine oil needs to be changed, the operator rotates the baffle 9 at a large angle to compress the torsion spring 13. During this process, the second limiting strip 12 limits the baffle 9, and the magnet 10 attracts the bottom guard plate 1 to limit the baffle 9, preventing the baffle 9 from being stopped. Automatic shut-off affects oil drainage. At this time, the operator can operate the motorcycle engine to drain the oil from the drain hole 5. After changing the oil, the operator can reverse the baffle 9 to restore the limit on the drain hole 5. If the baffle 9 is forgotten to be closed, the bumps and vibrations during driving, combined with the force applied by the torsion spring 13, will cause the baffle 9 to rotate. When the magnet 10 separates from the bottom guard plate 1, the torsion spring 13 will drive the baffle 9 to close. Afterward, the torsion spring 13 will continue to apply force to the baffle 9, so that the baffle 9 always blocks the drain hole 5. When the vibration causes the baffle 9 to open, the torsion spring 13 can also close the baffle 9 in time. The baffle 9 abuts against the first limit bar 11 to prevent the baffle 9 from rotating too much.

[0036] See Figures 1-3 In the above embodiment, side guard plates 2 are fixed on both sides of the bottom guard plate 1. A first mounting hole 3 is opened on the upper side of one side of the side guard plate 2, and a second mounting hole 4 is opened on the bottom of the side guard plate 2. The operator can connect the engine guard plate to the motorcycle frame or engine by passing bolts through the first mounting hole 3 and the second mounting hole 4 to form protection. The bottom guard plate 1 and the side guard plate 2 prevent sand and gravel flying during driving from damaging the motorcycle engine, and can play a certain protective role in the event of a collision, reducing the damage to the motorcycle engine.

[0037] Example 2:

[0038] Based on the above embodiment one, the following settings are now implemented to facilitate heat dissipation of the motorcycle engine.

[0039] See Figures 1-3In the above embodiment, the bottom guard plate 1 is internally connected with vertical ribs 6 and horizontal ribs 7, and multiple vertical ribs 6 and horizontal ribs 7 are provided. The multiple vertical ribs 6 and multiple horizontal ribs 7 are distributed perpendicularly. The length of the horizontal ribs 7 is equal to the width of the bottom guard plate 1, and the length of the horizontal ribs 7 is greater than the length of the vertical ribs 6. A protective net 8 is connected to the back of the vertical ribs 6 and the horizontal ribs 7. The protective net 8 is inclined. During the motorcycle's operation, outside air can pass through the protective net 8 and directly contact the motorcycle engine to facilitate heat dissipation. The protective net 8 can also prevent sand and gravel from passing through. The inclined setting of the protective net 8 facilitates the application of thrust by gravity and airflow to make impurities on the surface of the protective net 8 fall off, reducing the occurrence of blockage. In addition, the multiple vertical ribs 6 and multiple horizontal ribs 7 form a grid-like reinforcement structure, which supports the protective net 8 and prevents it from deforming, thus also achieving a protective effect and preventing large impurities from passing through. The longer length of the horizontal ribs 7 and the larger contact area between them and the bottom guard plate 1 further improve the stability of the structure.

[0040] The implementation principle of this utility model is as follows: First, the workers pass bolts through the first mounting hole 3 and the second mounting hole 4 to connect the engine guard plate to the motorcycle frame or engine to form protection. The bottom guard plate 1 and the side guard plate 2 prevent sand and gravel flying during driving from damaging the motorcycle engine, and can play a certain protective role in the event of a collision, reducing the damage to the motorcycle engine.

[0041] When the motorcycle engine oil needs to be changed, the operator rotates the baffle 9 at a large angle to compress the torsion spring 13. During this process, the second limiting strip 12 limits the baffle 9, and the magnet 10 attracts the bottom guard plate 1 to limit the baffle 9, preventing the baffle 9 from closing automatically and affecting the oil drainage. At this time, the operator can operate the motorcycle engine to drain the oil from the drain hole 5. After changing the oil, the operator reverses the baffle 9 to restore the limitation on the drain hole 5. If the baffle 9 is forgotten to be closed, the bumps and vibrations during driving, combined with the force applied by the torsion spring 13, will cause the baffle 9 to rotate. When the magnet 10 separates from the bottom guard plate 1, the torsion spring 13 will drive the baffle 9 to close. Afterward, the torsion spring 13 continues to apply force to the baffle 9, so that the baffle 9 always blocks the drain hole 5. When the vibration causes the baffle 9 to open, the torsion spring 13 can also close the baffle 9 in time. The baffle 9 abuts against the first limiting strip 11 to prevent the baffle 9 from rotating too much.

[0042] Furthermore, during motorcycle operation, outside air can pass through the protective net 8 and directly contact the motorcycle engine for heat dissipation. The protective net 8 also prevents sand and gravel from passing through. The inclined design of the protective net 8 allows for the application of thrust through gravity and airflow to dislodge impurities from its surface, reducing the occurrence of blockage. In addition, the multiple vertical ribs 6 and multiple horizontal ribs 7 form a grid-like reinforcement structure, supporting the protective net 8 and preventing deformation. This also provides protection by preventing large impurities from passing through. The longer length of the horizontal ribs 7 and the larger contact area between them and the bottom guard plate 1 further enhance the stability of the structure.

[0043] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A motorcycle engine protection plate, comprising a bottom guard plate (1), characterized in that: The bottom of the bottom guard plate (1) is provided with an oil drain hole (5) and a baffle (9), and a torsion spring (13) is connected between the baffle (9) and the bottom guard plate (1). A magnet (10) is connected to the top of the baffle (9), and a first limiting strip (11) and a second limiting strip (12) are connected to the bottom sides of the bottom of the bottom guard plate (1).

2. The motorcycle engine protection plate according to claim 1, characterized in that: The baffle (9) is rotatably connected to the bottom guard plate (1), and the diameter of the baffle (9) is larger than the diameter of the oil drain hole (5).

3. The motorcycle engine protection plate according to claim 1, characterized in that: The bottom protective plate (1) is made of iron.

4. The motorcycle engine protection plate according to claim 2, characterized in that: The baffle (9) abuts against the first limiting strip (11) and the second limiting strip (12) respectively.

5. The motorcycle engine protection plate according to claim 1, characterized in that: The bottom guard plate (1) is fixed with side guard plates (2) on both sides, and a first mounting hole (3) is opened on the upper side of one side of the side guard plate (2), and a second mounting hole (4) is opened at the bottom of the side guard plate (2).

6. The motorcycle engine protection plate according to claim 5, characterized in that: The bottom protective plate (1) is internally connected with vertical ribs (6) and horizontal ribs (7), and the back of the vertical ribs (6) and horizontal ribs (7) is connected with a protective net (8).

7. The motorcycle engine protection plate according to claim 6, characterized in that: The protective net (8) is set at an angle.

8. The motorcycle engine protection plate according to claim 6, characterized in that: Multiple vertical ribs (6) and multiple horizontal ribs (7) are provided, and the multiple vertical ribs (6) and multiple horizontal ribs (7) are distributed perpendicularly.

9. The motorcycle engine protection plate according to claim 8, characterized in that: The length of the transverse rib (7) is equal to the width of the bottom guard plate (1), and the length of the transverse rib (7) is greater than the length of the vertical rib (6).

Citation Information

Patent Citations

  • Motorcycle engine protection plate

    CN222025859U