A new bicycle power meter with strong sealing performance

Abstract

This utility model discloses a novel bicycle power meter with strong sealing performance, comprising a disc body and a disc cover with an anti-rotation structure and mutually sealing connection; wherein, the disc body has a locking hole formed in the middle position, and the disc body also has a groove for accommodating sealing material, the groove including an outer ring groove, an inner ring groove and a reinforcing ring groove, the openings of the three are all facing the front side of the disc body; the outer ring groove is close to the outer peripheral wall of the disc body, the inner ring groove is close to the locking hole, the reinforcing ring groove is located between the outer ring groove and the inner ring groove, and the area between the reinforcing ring groove and the inner ring groove is configured as a receiving space for placing the power supply component; the technical solution of this utility model has a simple structure, is easy to install, easy to implement and low in cost, and solves the problem that it is difficult to effectively control the amount of sealant sprayed when the disc claw power meter is sealed and fixed, resulting in insufficient sealing performance of the disc-shaped power meter.

Description

Technical Field

[0001] This utility model relates to the field of bicycle parts technology, specifically to a novel bicycle power meter with strong sealing performance. Background Technology

[0002] Power meters are essential equipment for measuring power in outdoor cycling. By interconnecting with a cycling computer, they can effectively help riders assess their real-time performance in outdoor cycling, such as power output, cadence, and left-right leg balance. However, existing power meters typically only apply sealant to the seams near the outer peripheral wall and the inner peripheral wall near the locking hole when sealing the power meter's disc and cover. This leads to the following problems: First, the amount of sealant applied is difficult to control. If too much sealant is applied, it can overflow and adhere to the outer edges of the disc and cover, significantly affecting aesthetics. Second, the amount of sealant applied may be insufficient or uneven. If there are gaps in the sealant at the joints, the seal may become incomplete, allowing rainwater to seep into the power meter and damage its internal power components. Furthermore, this lack of sealant can weaken the connection between the disc and cover, potentially causing them to detach and compromise safety. Utility Model Content

[0003] This utility model provides a novel bicycle power meter with strong sealing performance. It features a simple structure, easy installation, and low cost, solving the problem of insufficient sealing in existing disc-type power meters where the amount of sealant applied during sealing is difficult to control. The main technical solution adopted is as follows:

[0004] A novel bicycle power meter with strong sealing performance includes an anti-rotation structure and a disc body and a disc cover that are sealed together. The disc body has a locking hole at its center and a groove for accommodating sealing material. The groove includes an outer ring groove, an inner ring groove, and a reinforcing ring groove, all three openings facing the front of the disc body. The outer ring groove is near the outer peripheral wall of the disc body, the inner ring groove is near the locking hole, and the reinforcing ring groove is located between the outer and inner ring grooves. The area between the reinforcing ring groove and the inner ring groove is configured as a receiving space for placing a power supply component. The disc cover has mating portions corresponding to the outer, inner, and reinforcing ring grooves. When the disc cover is placed on the disc body, the mating portions correspond to the grooves, and the disc cover is fixedly and sealed to the disc body using the sealing material. The anti-rotation structure includes a limiting groove recessed in the wall of the reinforcing ring groove and a limiting block formed on the mating portion. The limiting block and the limiting groove are engaged to restrict the disc cover from rotating on the disc body.

[0005] Preferably, the mating part includes a first mating body, a second mating body, and a third mating body integrally formed with the disc cover. The first mating body corresponds to the outer annular groove, the second mating body corresponds to the reinforcing annular groove, and the third mating body corresponds to the inner annular groove. The first mating body, the second mating body, and the third mating body are all annular.

[0006] Preferably, the second mating body extends vertically toward the reinforcing annular groove and is provided with a first isolation wall, the width of which is smaller than the groove width of the reinforcing annular groove; the third mating body extends vertically toward the inner annular groove and is provided with a second isolation wall, the width of which is smaller than the groove width of the inner annular groove; the first isolation wall enters the corresponding reinforcing annular groove and acts to abut against the bottom wall of the reinforcing annular groove; the second isolation wall enters the corresponding inner annular groove and acts to abut against the bottom wall of the inner annular groove; gap spaces are formed between the first isolation wall and the groove wall of the reinforcing annular groove, and between the second isolation wall and the groove wall of the inner annular groove.

[0007] Preferably, the limiting block is formed on the outer peripheral wall of the second mate, and the limiting block and the second mate are integrally formed; the height of the limiting block is the same as the height of the second mate, so that the limiting block enters the reinforcing annular groove synchronously with the first isolation wall of the second mate.

[0008] Preferably, there are four limiting blocks and four limiting grooves; the limiting blocks are arranged in a ring around the outer peripheral wall of the second mating body at equal intervals.

[0009] Preferably, both the inner annular groove and the reinforced annular groove have graduated structures extending in the circumferential direction on their groove walls, and the graduated structures form a certain height difference with respect to the bottom wall of the groove.

[0010] Preferably, the scale structure is configured as scale lines or raised strips.

[0011] Preferably, the outer ring groove is positioned at a higher height than the reinforcing ring groove; a guide ring is also formed on the disc body, the guide ring is located between the outer ring groove and the reinforcing ring groove, and the guide ring is used to guide the sealing material overflowing from the outer ring groove into the reinforcing ring groove.

[0012] Preferably, the guide ring includes an inclined wall; the limiting groove is formed on the inclined wall.

[0013] Preferably, the sealing material is a sealant or a hot melt adhesive.

[0014] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following beneficial effects:

[0015] (1) This utility model provides a novel bicycle power meter with strong sealing performance. It has a simple structure, is easy to install, easy to implement and has low cost. It solves the problem that the amount of sealant sprayed is difficult to control when the existing disc power meter is sealed and fixed, resulting in insufficient sealing performance of the disc power meter. The technical solution of this utility model divides the main body of the power meter into a disc body and a disc cover, and sets a triple groove structure of outer ring groove, reinforcing groove and inner ring groove on the disc body. On the one hand, the fixed volume of the groove can directly limit the filling amount of sealing material, replacing the traditional method of randomly spraying at the joint. This not only avoids the situation of excessive or insufficient spraying, but also guides the sealing material to be evenly distributed in the groove, ensuring that the joint of the two is evenly covered and connected, solving the sealing shortcomings caused by local leakage. On the other hand, the groove wall can act as a physical isolation barrier, effectively restricting the overflow of sealing material, preventing it from flowing to the surroundings and adhering to the outside of the disc body and disc cover, and ensuring the cleanliness of the product appearance. Meanwhile, the reinforcing ring groove and the anti-rotation structure, through the cooperation of the limiting block and the limiting groove, can effectively ensure that the cover will not rotate on the disc body, preventing the sealing material from being stressed and aging faster. Secondly, since the reinforcing ring groove is located between the outer ring groove and the inner ring groove, its cooperation with the mating part can also prevent external water flow and dust from entering the housing space, effectively protecting the power components in the housing space, and further improving the long-term safety of the power meter in complex outdoor environments, such as rain and bumpy road conditions.

[0016] (2) In this technical solution, the first mating body, the second mating body and the third mating body are all designed in a ring shape. The ring structure can be precisely matched and covered with each annular groove, ensuring that the disc body and the disc cover are not easily misaligned, so that the sealing material is evenly distributed between the groove and the mating body, thereby improving the sealing performance.

[0017] (3) In this technical solution, the design of the scale structure provides a visual standard for the filling amount of sealing material, avoiding excessive waste or insufficient sealing caused by relying on the experience of operators to fill, achieving accurate control of the filling amount, and ensuring that the filling amount can be uniform each time, thus improving the product standardization; in addition, this scale structure design is particularly suitable for scenarios with deeper grooves, improving filling efficiency and reducing assembly errors.

[0018] (4) In this technical solution, by setting an outer ring groove with a height higher than the reinforcing ring groove and a guide ring located between the two, firstly, the excess sealing material in the outer ring groove is naturally flowed to the reinforcing ring groove by gravity due to the height difference. With the guiding effect of the guide ring, the excess material is prevented from overflowing to the outside of the disc, thus solving the problem of the outer ring groove being accidentally filled with too much material. Secondly, the excess material flowing into the reinforcing ring groove can replenish the sealing material of the reinforcing ring groove, thus preventing the reinforcing ring groove from failing to seal due to insufficient filling.

[0019] (5) In this technical solution, an inclined wall is set on the guide ring and the limiting groove is opened on the inclined wall. First, the inclined wall allows the excess sealing material in the outer ring groove to flow smoothly into the reinforcing ring groove along the inclined surface, and also to flow smoothly into the limiting groove. The inclined design has a better guiding effect and can better prevent the material from stagnating on the guide ring, ensuring the material flow efficiency. Second, the setting of the inclined wall can also play a certain guiding role for the limiting block, making it easier for the limiting block to be smoothly and quickly inserted into the limiting groove, improving the ease of assembly. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0022] Figure 2 This is an exploded view of the overall embodiment of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the disc cover in an embodiment of the present utility model;

[0024] Figure 4 This is a cross-sectional view of the disc body and disc cover when sealed according to an embodiment of the present invention;

[0025] Figure 5 for Figure 4 A magnified view of part A shown below;

[0026] Figure 6 This is a cross-sectional schematic diagram of the disc body according to an embodiment of the present utility model;

[0027] Figure 7 for Figure 6 The enlarged view of part B shown.

[0028] The annotations in the attached figures are explained as follows:

[0029] 1. Disc body; 11. Outer ring groove; 12. Inner ring groove; 13. Reinforcing ring groove; 14. Locking hole; 15. Guide ring; 151. Inclined wall; 2. Disc cover; 21. First mating body; 22. Second mating body; 22a. First isolation wall; 23. Third mating body; 23a. Second isolation wall; 31. Limiting groove; 32. Limiting block; 1A. Accommodation space; 2A. Gap space. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0031] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0032] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does not 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 limiting the specific protection scope of this utility model.

[0033] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0034] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".

[0035] Please see Figures 1 to 7 .

[0036] First Embodiment

[0037] This embodiment provides a novel bicycle power meter with strong sealing performance. It features a simple structure, easy installation, and low cost, solving the problem of insufficient sealing in existing disc-type power meters where the amount of sealant applied during sealing is difficult to control. See also: Figure 1 and Figure 2 It mainly includes a disc body 1 and a disc cover 2, and an anti-rotation structure disposed on the disc body 1 and the disc cover 2; wherein,

[0038] The disc body 1 has a locking hole 14 in its middle position, and also has a groove for accommodating sealing material; the sealing material mainly includes sealant, hot melt adhesive, etc.; see Figure 7 The groove includes an outer annular groove 11, an inner annular groove 12, and a reinforcing annular groove 13. The openings of all three face the front of the disk body 1, and all three are annular in shape. The diameter of the outer annular groove 11 is larger than the diameter of the reinforcing annular groove 13, and the diameter of the reinforcing annular groove 13 is larger than the diameter of the inner annular groove 12. The outer annular groove 11 is close to the outer peripheral wall of the disk body 1, the inner annular groove 12 is close to the retaining hole 14, and the reinforcing annular groove 13 is located between the outer annular groove 11 and the inner annular groove 12. Therefore, the volumes of the outer annular groove 11, the reinforcing annular groove 13, and the inner annular groove 12 are different, and their volumes determine the amount of sealing material they can hold. The area between the reinforcing annular groove 13 and the inner annular groove 12 is configured as a receiving space 1A for placing a power supply assembly, which mainly includes strain gauges, circuit boards, and battery packs.

[0039] Disk cover 2, see Figure 2 Its corresponding setting is located above disk body 1; see Figure 3 The cover 2 has mating portions corresponding to the outer annular groove 11, inner annular groove 12, and reinforcing annular groove 13. These mating portions include a first mating body 21, a second mating body 22, and a third mating body 23 integrally formed with the cover 2. The first mating body 21 corresponds to the outer annular groove 11, the second mating body 22 corresponds to the reinforcing annular groove 13, and the third mating body 23 corresponds to the inner annular groove 12. The first mating body 21, the second mating body 22, and the third mating body 23 are all annular in shape and adaptable to the grooves. (See also...) Figure 5 When the cover 2 is placed on the disc body 1, the first mating body 21 is positioned above the outer ring groove 11, the second mating body 22 is positioned above the reinforcing ring groove 13, and the third mating body 23 is positioned above the inner ring groove 12. Then, the groove body and the mating part are glued together by the sealing material (sealant) in the groove body, so that the cover 2 and the disc body 1 are fixedly and sealed together.

[0040] Anti-rotation structure, see Figure 2 It includes a limiting groove 31 recessed in the wall of the reinforcing ring groove 13 and a limiting block 32 formed on the mating part. There are four limiting blocks 32 and four limiting grooves 31. The limiting blocks 32 are integrally formed at equal intervals and are arranged around the outer peripheral wall of the second mating body 22. When the disc cover 2 is placed on the disc body 1, the limiting blocks 32 and the limiting grooves 31 are simultaneously engaged, thus restricting the disc cover 2 from rotating on the disc body 1.

[0041] In this embodiment, when the sealing material (such as sealant) is sprayed into the outer ring groove 11, inner ring groove 12 and reinforcing ring groove 13, the groove wall of the groove can act as a physical barrier to effectively prevent the sealant from overflowing. Secondly, the outer ring groove 11, inner ring groove 12 and reinforcing ring groove 13 (volume) can also limit the filling amount of the sealant, and the design of the groove can also allow the user to quickly fill a sufficient amount of sealant and guide the sealant to be evenly distributed in the groove.

[0042] In this embodiment, see Figure 5 The reinforcing groove 13, located between the outer groove 11 and the inner groove 12, works in conjunction with the mating part to prevent external water flow and dust from entering the housing space 1A, effectively protecting the power components in the housing space 1A and further improving the power meter's performance in complex outdoor environments.

[0043] In this embodiment, see Figure 5 The second mating body 22 extends vertically toward the reinforcing annular groove 13 and is provided with a first insulating wall 22a, the width of which is smaller than the groove width of the reinforcing annular groove 13; the third mating body 23 extends vertically toward the inner annular groove 12 and is provided with a second insulating wall 23a, the width of which is smaller than the groove width of the inner annular groove 12; both the first insulating wall 22a and the second insulating wall 23a are annular. See also Figure 5 When the cover 2 is placed on the disc body 1, the second mating body 22 is located above the reinforcing ring groove 13, and the first partition wall 22a enters the corresponding reinforcing ring groove 13 and also acts to press against the bottom wall of the reinforcing ring groove 13; the third mating body 23 is located above the inner ring groove 12, and the second partition wall 23a enters the corresponding inner ring groove 12 and acts to press against the bottom wall of the inner ring groove 12; a gap space 2A is formed between the first partition wall 22a and the groove wall of the reinforcing ring groove 13, and between the second partition wall 23a and the groove wall of the inner ring groove 12.

[0044] In this embodiment, the isolated gap space 2A is located beside the first isolation wall 22a and the second isolation wall 23a. This gap space 2A facilitates the entry of the first isolation wall 22a and the second isolation wall 23a into the tank. Secondly, the gap space 2A can also accommodate the sealing material in the tank, and the sealing material fixes the first isolation wall 22a and the second isolation wall 23a to the tank in the gap space 2A. In addition, the first isolation wall 22a and the second isolation wall 23a can also serve as protective barriers. The first isolation wall 22a, in conjunction with the reinforcing ring groove 13, can prevent external foreign objects and fluids from entering the power component area through the outside of the reinforcing ring groove 13. The second isolation wall 23a, in conjunction with the inner ring groove 12, can prevent external foreign objects and fluids from entering the power component area through the outside of the inner ring groove 12. Both can enhance the sealing protection of the power component and improve the overall sealing reliability.

[0045] In this embodiment, see Figure 3 The height of the limiting block 32 is the same as the height of the second mating body 22. When the first isolation wall 22a enters the reinforcing groove, the limiting block 32 can enter the reinforcing ring groove 13 synchronously with the first isolation wall 22a of the second mating body 22, so as to realize the rapid assembly of the limiting block 32.

[0046] In this embodiment, see Figure 7 The outer ring groove 11 is positioned higher than the reinforcing ring groove 13; a guide ring 15 is also formed on the disc body 1, which is located between the outer ring groove 11 and the reinforcing ring groove 13. The guide ring 15 is used to guide the sealing material overflowing from the outer ring groove 11 into the reinforcing ring groove 13.

[0047] In this embodiment, see Figure 7 The guide ring 15 includes an inclined wall 151; see also Figure 5 The limiting groove 31 is formed on the inclined wall 151. The inclined wall 151 allows the excess sealing material of the outer ring groove 11 to flow smoothly into the reinforcing ring groove 13 along the inclined surface, and also into the limiting groove 31. The inclined design has a better guiding effect and can better prevent the material from being stuck on the guide ring 15, ensuring the material flow efficiency. Secondly, the setting of the inclined wall 151 can also play a certain guiding role for the limiting block 32, making it easier for the limiting block 32 to be smoothly and quickly inserted into the limiting groove 31.

[0048] The working principle and usage process of this utility model:

[0049] During installation of the power meter, firstly, sealant is sprayed onto the outer ring groove 11, inner ring groove 12, and reinforcing ring groove 13 until the grooves are completely filled with sealant, at which point the amount of sealant sprayed can be effectively controlled; secondly, the power supply assembly is installed into the accommodating space 1A and limited; thirdly, the cover 2 is placed above the body 1, and the four limiting blocks 32 are aligned with the four limiting grooves 31 respectively. Then, the cover 2 is pressed tightly onto the body 1, so that each limiting block 32 is engaged in each limiting groove 31, and at the same time, the first isolation wall 22a is precisely engaged in the reinforcing ring groove 13 and the second isolation wall 23a is precisely engaged in the inner ring groove 12, thus completing the installation. Therefore, this utility model divides the power meter body into a disc 1 and a disc cover 2, and sets a triple groove structure of an outer ring groove 11, a reinforcing groove, and an inner ring groove 12 on the disc 1. On the one hand, the fixed volume of the groove can directly limit the filling amount of sealing material, replacing the traditional method of randomly spraying at the joint. This not only avoids the situation of excessive or insufficient spraying, but also guides the sealing material to be evenly distributed in the groove, ensuring that the joint of the two is evenly covered and connected, and solving the sealing shortcomings caused by local leakage. On the other hand, the groove wall can act as a physical isolation barrier, effectively restricting the overflow of sealing material, preventing it from flowing to the surroundings and adhering to the outside of the disc 1 and the disc cover 2, and ensuring the cleanliness of the product appearance. Meanwhile, the reinforcing ring groove 13 and the anti-rotation structure, through the cooperation of the limiting block 32 and the limiting groove 31, can effectively ensure that the disc cover 2 will not rotate on the disc body 1, preventing the sealing material from being stressed and aging faster. Secondly, since the reinforcing ring groove 13 is located between the outer ring groove 11 and the inner ring groove 12, its cooperation with the mating part can also prevent external water flow and dust from entering the receiving space 1A, effectively protecting the power components in the receiving space 1A, and further improving the long-term safety of the power meter in complex outdoor environments, such as rain and bumpy road conditions.

[0050] Second Embodiment

[0051] The difference between the second embodiment and the first embodiment is that: both the inner annular groove 12 and the reinforcing annular groove 13 have scale structures extending in the circumferential direction (not shown in the figure). The scale structures form a certain height difference with respect to the bottom wall of the groove. This scale structure can further ensure the control of the amount of coating and avoid excessive or insufficient coating, which would affect the sealing performance.

[0052] In this embodiment, the scale structure is a scale line or a raised strip, which provides a visual standard for the filling amount of sealing material, avoiding excessive waste or insufficient sealing caused by relying on the experience of operators to fill, achieving accurate control of the filling amount, and ensuring that the filling amount is consistent each time, thus improving product standardization; in addition, this scale structure design is particularly suitable for scenarios with deeper grooves.

[0053] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A novel bicycle power meter with strong sealing performance, characterized in that: Includes an anti-rotation structure and a disc body and cover that are sealed together. in, The disk has a locking hole in its center and a groove for accommodating sealing material. The groove includes an outer ring groove, an inner ring groove, and a reinforcing ring groove, all of which have openings facing the front of the disk. The outer ring groove is close to the outer peripheral wall of the disk, the inner ring groove is close to the locking hole, and the reinforcing ring groove is located between the outer ring groove and the inner ring groove. The area between the reinforcing ring groove and the inner ring groove is configured as a receiving space for placing power supply components. The disc cover has a mating part formed on it corresponding to the outer ring groove, inner ring groove and reinforcing ring groove. When the disc cover is placed on the disc body, the mating part corresponds to the groove and the disc cover and the disc body are fixedly and sealed together by the sealing material. The anti-rotation structure includes a limiting groove recessed in the wall of the reinforcing ring groove and a limiting block formed on the mating part. The limiting block and the limiting groove are engaged to restrict the disc cover from rotating on the disc body.

2. The novel bicycle power meter as described in claim 1, characterized in that: The mating part includes a first mating body, a second mating body, and a third mating body integrally formed with the disc cover. The first mating body corresponds to the outer annular groove, the second mating body corresponds to the reinforcing annular groove, and the third mating body corresponds to the inner annular groove. The first mating body, the second mating body, and the third mating body are all annular.

3. The novel bicycle power meter as described in claim 2, characterized in that: The second mating body extends vertically toward the reinforcing annular groove and is provided with a first isolation wall, the width of which is smaller than the groove width of the reinforcing annular groove; the third mating body extends vertically toward the inner annular groove and is provided with a second isolation wall, the width of which is smaller than the groove width of the inner annular groove; the first isolation wall enters the corresponding reinforcing annular groove and acts to abut against the bottom wall of the reinforcing annular groove; the second isolation wall enters the corresponding inner annular groove and acts to abut against the bottom wall of the inner annular groove; gap spaces are formed between the first isolation wall and the groove wall of the reinforcing annular groove, and between the second isolation wall and the groove wall of the inner annular groove.

4. The novel bicycle power meter as described in claim 3, characterized in that: The limiting block is formed on the outer peripheral wall of the second mate and the limiting block and the second mate are integrally formed; the height of the limiting block is the same as the height of the second mate, so that the limiting block enters the reinforcing ring groove synchronously with the first isolation wall of the second mate.

5. The novel bicycle power meter as described in claim 4, characterized in that: Four of each of the limiting blocks and the limiting grooves are provided; the limiting blocks are arranged in a ring around the outer peripheral wall of the second mating body at equal intervals.

6. The novel bicycle power meter as described in claim 1, characterized in that: Both the inner annular groove and the reinforced annular groove have graduated structures extending in the circumferential direction on their groove walls, and the graduated structures form a certain height difference with respect to the bottom wall of the groove.

7. The novel bicycle power meter as described in claim 6, characterized in that: The scale structure is configured as scale lines or raised bars.

8. The novel bicycle power meter as described in any one of claims 1-7, characterized in that: The outer ring groove is positioned at a higher height than the reinforcing ring groove; a guide ring is also formed on the disc body, the guide ring is located between the outer ring groove and the reinforcing ring groove, and the guide ring is used to guide the sealing material overflowing from the outer ring groove into the reinforcing ring groove.

9. The novel bicycle power meter as described in claim 8, characterized in that: The guide ring includes an inclined wall; the limiting groove is formed on the inclined wall.

10. The novel bicycle power meter as described in claim 9, characterized in that: The sealing material is a sealant or a hot melt adhesive.

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