Sensor fixing structure and electric bicycle

Abstract

The invention discloses a sensor fixing structure and an electric bicycle. The sensor fixing structure comprises a shaft roller, a sensor assembly and a right bowl assembly, the shaft roller is sleeved with the sensor assembly, the right bowl assembly comprises a right bowl and a bearing, a mounting groove is formed in the right bowl, the inner surface of the bearing is in clearance fit with the outer surface of the sensor assembly, and the outer surface of the bearing is fixedly connected with the groove wall of the mounting groove. The outer surface of the bearing is fixedly connected with the groove wall of the mounting groove, so that the outer surface of the bearing cannot shake relative to the right bowl piece, deflection of the fluted disc is avoided, the connection reliability between the fluted disc and the chain is improved, and the use reliability of the electric bicycle is improved.

Description

Technical Field

[0001] The invention relates to the field of electric bicycles, and in particular to a sensor fixing structure and an electric bicycle. Background Art

[0002] With the rapid development of electric bicycles, people's requirements for electric bicycles are getting higher and higher. There are many sensors in electric bicycles, and mid-to-high-end sensors can be used to measure the torque size of the pedals of electric bicycles and measure the pedaling speed. The existing sensor fixing structure usually includes an axle stick and a left bowl assembly and a right bowl assembly arranged on both sides of the axle stick, and also includes a sensor assembly arranged between the left bowl assembly and the right bowl assembly, and the sensor assembly is coaxially assembled on the axle stick. However, there is a gap between the existing right bowl assembly and the outer surface of the bearing. When the user drives the sprocket to rotate, there will be a certain amplitude of shaking between the outer surface of the bearing and the right bowl assembly, and the sprocket will produce a deflection (the larger the outer diameter of the sprocket, the greater the deflection), causing the sprocket and the chain to produce abnormal noise or even the chain to detach from the sprocket, reducing the reliability of the electric bicycle. Summary of the invention

[0003] The main purpose of the present invention is to provide a sensor fixing structure and an electric bicycle to solve the problem that the gear disc may deflect.

[0004] To achieve the above-mentioned purpose, the sensor fixing structure proposed in the present invention includes a shaft rod, a sensor assembly and a right bowl assembly, the sensor assembly is sleeved outside the shaft rod, the right bowl assembly includes a right bowl and a bearing, the right bowl is formed with a mounting groove, the inner surface of the bearing is clearance-matched with the outer surface of the sensor assembly, and the outer surface of the bearing is fixedly connected to the groove wall of the mounting groove.

[0005] Optionally, the outer surface of the bearing is interference fit with the groove wall of the mounting groove.

[0006] Optionally, fixing glue is provided between the outer surface of the bearing and the groove wall of the mounting groove.

[0007] Optionally, the right bowl assembly further includes a retaining spring, which is disposed in the right bowl, and the bearing is located between the bottom wall of the mounting groove and the retaining spring.

[0008] Optionally, the right bowl member forms a limiting groove, and the retaining spring is installed in the limiting groove.

[0009] Optionally, the sensor assembly includes a relatively rotating part and a relatively stationary part, the inner surface of the bearing is clearance-matched with the outer surface of the relatively rotating part, the sensor fixing structure also includes a gear disk and a fastener, the gear disk is sleeved on the relatively rotating part, and the gear disk and the relatively rotating part are detachably connected via the fastener.

[0010] Optionally, the fastener is provided with a first thread segment, the relatively rotating portion is provided with a second thread segment, the first thread segment is threadedly connected to the second thread segment, and the fastener abuts against a side of the toothed disc away from the bearing.

[0011] Optionally, the relative rotating portion forms a limiting step, the gear disc includes a main body and a limiting protrusion connected to each other, one side of the bearing abuts against the limiting step, and the other side of the bearing abuts against the limiting protrusion.

[0012] Optionally, a first anti-rotation portion is provided on a side of the right bowl piece close to the relatively stationary portion, and a second anti-rotation portion is provided on a side of the relatively stationary portion close to the right bowl piece, and the first anti-rotation portion cooperates with the second anti-rotation portion to prevent the relatively stationary portion from rotating relative to the right bowl piece.

[0013] Optionally, the first anti-rotation portion includes at least one latching tooth, and the second anti-rotation portion includes at least one latching groove, and the latching tooth is located in the latching groove.

[0014] In addition, the present invention also provides an electric bicycle, which includes the sensor fixing structure as described above.

[0015] The sensor fixing structure in the technical solution of the present invention has a mounting groove formed on the inner side of the right bowl, and the outer surface of the bearing is fixedly connected to the groove wall of the mounting groove, so that the outer surface of the bearing will not shake or swing relative to the right bowl, thereby preventing the outer surface of the bearing from shaking in the right bowl when the sprocket rotates, and the outer surface of the bearing will not produce axial displacement relative to the groove wall of the mounting groove, thereby preventing the sway of the sprocket. At the same time, the fasteners tightly lock the sprocket, the inner diameter of the bearing and the relatively rotating part of the sensor assembly together, thereby improving the connection reliability between the sprocket and the chain or belt, thereby improving the reliability of the use of the electric bicycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 It is an exploded schematic diagram of an existing sensor fixing structure;

[0018] Figure 2 It is a cross-sectional schematic diagram of an existing sensor fixing structure;

[0019] Figure 3 This is a structural schematic diagram of a sensor fixing structure according to an embodiment of the present application;

[0020] Figure 4 This is an exploded schematic diagram of a sensor fixing structure according to an embodiment of the present application;

[0021] Figure 5 This is a cross-sectional schematic diagram of a sensor fixing structure according to an embodiment of the present application;

[0022] Figure 6 for Figure 5 The enlarged schematic diagram of point A in the middle;

[0023] Figure 7 This is an exploded schematic diagram of a right bowl component in a sensor fixing structure according to an embodiment of the present application;

[0024] Figure 8 This is a schematic structural diagram of a right bowl component in a sensor fixing structure according to an embodiment of the present application;

[0025] Fig. 9 This is a schematic diagram of the exploded view of the right bowl and the relatively stationary portion in the sensor fixing structure according to one embodiment of the present application.

[0026] Description of Figure Numbers:

[0027]

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] In the present invention, the descriptions of directions such as "up", "down", "front", "back", "left", and "right" are as follows: Figure 1 The directions shown are for reference only and are used to explain the Figure 1 The relative position relationship between the components in the shown posture. If the specific posture changes, the directional indication will also change accordingly.

[0035] The present invention provides a sensor fixing structure 100 and an electric bicycle.

[0036] Please refer to Figure 1 and Figure 2 , Figure 1 is an exploded schematic diagram of an existing sensor fixing structure 100, Figure 2 1 is a cross-sectional schematic diagram of an existing sensor fixing structure 100. For the convenience of description, the features representing spaces such as slots, holes, and cavities are marked with arrowed lines in the drawings, and the physical structure features are marked with arrowed lines in the drawings.

[0037] In the existing sensor fixing structure 100, the sensor fixing structure 100 includes a shaft 1, a sensor assembly 2, a right bowl 4 and a bearing 3. The sensor assembly 2 is sleeved outside the shaft 1, and the sensor assembly 2 includes a relatively static portion 22 and a relatively rotating portion 23. The relatively static portion 22 will not rotate with the shaft 1, and the relatively rotating portion 23 is connected to the shaft 1 through a toothed structure and can rotate with the shaft 1. The sensor assembly 2 can also include sensors such as a torque sensor and a speed sensor (not shown in the figure) for measuring the torque of the pedal of the electric bicycle and measuring data such as the pedaling speed.

[0038] The relatively rotating part 23 is detachably connected to the toothed disc 5, and the toothed disc 5 can cooperate with a chain or a belt to realize power transmission. The right bowl 4 and the relatively stationary part 22 remain relatively stationary. The inner surface 31 of the bearing 3 is tightly matched with the outer end surface 232 of the relatively rotating part 23, and the inner ring of the bearing 3 rotates with the shaft 1.

[0039] In the prior art, a left bowl component 8 is further provided on the other side of the shaft 1, and the left bowl component 8 and the right bowl component 4 are respectively located at the two ends of the shaft 1 along its axial direction. The left bowl component 8 includes a left bowl component 81, a left bearing 82 and a left retaining spring 83. The left bearing 82 is installed in the left bowl component 81, and the left bearing 82 is limited and fixed by the left retaining spring 83 to prevent the left bearing 82 from axial displacement.

[0040] That is to say, when the existing sensor fixing structure 100 is installed, the right bowl 4 (described in detail later, the inner ring of the right bowl 4 is provided with a first anti-rotation portion 41 that cooperates with the relatively static portion 22, which can prevent the relatively static portion 22 from rotating relative to the right bowl 4) is first assembled into the five-way of the frame (the five-way is the pipe perpendicular to the plane where the sprocket 5 is located, not shown in the figure), so that the signal output line in the relatively static portion 22 can be prevented from being damaged due to rotation when the left bowl assembly 8 is rotated and assembled. Then, the sensor assembly 2 (including the bearing 3) after the shaft rod 1 is assembled is assembled into the right bowl 4.

[0041] The outer surface 32 of the existing bearing 3 and the right bowl piece 4 are manually slidably assembled (the sliding assembly must be a clearance fit). In this way, when the user pedals, the rotational torque of the shaft 1 is transmitted to the relative rotating part 23 of the sensor assembly 2, and the relative rotating part 23 drives the sprocket 5 to rotate. There is a gap between the outer surface 32 of the bearing 3 and the right bowl piece 4. Therefore, there will be a certain degree of shaking between the outer surface 32 of the bearing 3 and the right bowl piece 4. This will cause the sprocket 5 to have serious deflection when riding with heavy loads (the larger the outer diameter of the sprocket 5, the greater the deflection), causing the sprocket 5 and the chain or belt to produce abnormal bite noise, or even the chain or belt to fall off the sprocket 5, thereby reducing the reliability of the electric bicycle.

[0042] In order to solve the problem of the deflection of the toothed disc 5, the present application proposes a sensor fixing structure 100. Figures 3 to 6 , Figure 3 1 is a schematic structural diagram of a sensor fixing structure 100 according to an embodiment of the present application. Figure 4 FIG. 1 is an exploded schematic diagram of a sensor fixing structure 100 according to an embodiment of the present application. Figure 5 : is a cross-sectional schematic diagram of a sensor fixing structure 100 according to an embodiment of the present application. Figure 6 for Figure 5 A magnified schematic diagram of center A.

[0043] A mounting groove 43 is formed on the inner side of the right bowl 4, and the outer surface 32 of the bearing 3 is fixedly connected to the groove wall of the mounting groove 43, so that the outer surface 32 of the bearing 3 will not shake or swing relative to the right bowl 4, thereby preventing the outer surface 32 of the bearing 3 from shaking in the right bowl 4 when the sprocket 5 rotates, and the outer surface 32 of the bearing 3 will not produce axial displacement relative to the groove wall of the mounting groove 43 (described in detail later, the sliding clearance between the inner surface 31 of the bearing 3 and the relatively rotating part 23 of the sensor assembly 2 is matched by fasteners 9 to tightly lock and fix the sprocket 5, the inner ring of the bearing 3, and the relatively rotating part 23 together). Therefore, the sprocket 5 is prevented from swinging, thereby improving the connection reliability between the sprocket 5 and the chain or belt, thereby improving the reliability of the electric bicycle.

[0044] It is understandable that the bearing 3 may be a ball bearing, the inner ring of which can rotate, while the outer ring is fixed and does not rotate.

[0045] When the sensor fixing structure 100 of the present application is installed, the sensor fixing structure 100 first installs the bearing 3 in the installation groove 43 of the right bowl piece 4 when leaving the factory. The right bowl piece 4 and the bearing 3 form a right bowl piece assembly 6. After being shipped to the client (vehicle manufacturer), the right bowl piece assembly 6 is assembled with the five-way bracket of the frame from the right side of the frame, and then the sensor assembly 2 after the shaft rod 1 is assembled is slidably installed into the right bowl piece assembly 6 from the left side of the frame. The loading process is simpler and the assembly efficiency can be improved (in the prior art, the bearing 3 is first pre-installed on the relative rotating part 23 of the sensor assembly 2, and the inner surface 31 of the bearing 3 is tightly fitted with the relative rotating part 23. Then, the sensor assembly 2 after the shaft rod 1 is assembled is installed from the right side of the five-way bracket of the frame to the left into the right bowl piece 4, and then a special retaining ring pliers is used to install the configured retaining ring 7 into the right bowl piece 4).

[0046] On this basis, the outer surface 32 of the bearing 3 can be interference fit with the groove wall of the installation groove 43. The interference fit connection has the advantages of good centering, large load-bearing capacity, small weakening of the shaft strength, and good impact resistance.

[0047] A fixing glue (not shown in the figure) may also be provided between the outer surface 32 of the bearing 3 and the groove wall of the mounting groove 43, and the fixing glue is used to achieve a fixed connection between the outer surface 32 of the bearing 3 and the groove wall of the mounting groove 43. The fixing glue may be glue such as epoxy glue and acrylic glue, and the fixing glue can tightly bond the outer surface 32 of the bearing 3 to the groove wall of the mounting groove 43. The present application does not limit the specific type of the fixing glue.

[0048] In some embodiments, please refer to Figure 6 and Figure 7 The right bowl component 6 also includes a circlip 7, which is arranged in the right bowl 4, and the bearing 3 is located between the bottom wall of the mounting groove 43 and the circlip 7. The circlip 7 is provided to strengthen the reliability of the fixing of the bearing 3 and the mounting groove 43 of the right bowl 4, so as to ensure that the bearing 3 can still be reliably in the mounting groove 43 of the right bowl 4 during long-term work, and avoid affecting the power transmission of the chain or belt (if the bearing 3 is used in the right bowl 4 for a long time and slowly produces a small movement along the axial direction of the shaft rod 1, the movement may become larger over time, which will make it difficult for the chain or belt to engage with the teeth of the toothed disc 5, and even the chain or belt will fall off the toothed disc 5 during riding, making the electric bicycle unable to ride).

[0049] like Figure 1 and Figure 2 As shown, since the outer surface 32 of the bearing 3 and the right bowl 4 in the prior art are connected in a sliding manner, not in a fixed manner, the right bowl 4 needs to be assembled into the five-way of the frame first, and then the sensor assembly 2 after the shaft rod 1 and other accessories are assembled is assembled into the right bowl 4 from the right side of the frame to the left, and then the retaining spring 7 in the right bowl 4 is installed. When installing the retaining spring 7, it is usually necessary to fix the frame with one hand, and install the retaining spring 7 into the right bowl 4 by pressing with the other hand, that is, the traditional method can only complete the assembly of the retaining spring 7 manually, and it is easy to cause the retaining spring 7 to pop out and hit the human body or even the face due to careless operation during the operation, which poses a great safety hazard.

[0050] In this embodiment, please refer to Figure 6 , Figure 7 and Figure 8 , Figure 7 This is an exploded schematic diagram of the right bowl component 6 in the sensor fixing structure 100 of an embodiment of the present application. Figure 8The structure diagram of the right bowl component 6 in the sensor fixing structure 100 of an embodiment of the present application is shown in FIG. The bearing 3 can be first installed in the installation groove 43 of the right bowl component 4, and then the retaining spring 7 can be installed in the right bowl component 4. The position of the bearing 3 is fixed by the retaining spring 7. The bearing 3, the right bowl component 4 and the retaining spring 7 form a whole (i.e., the right bowl component 6). This process is completed in the sensor production plant. For the client (the vehicle manufacturer), the right bowl component 6 is first assembled with the five-way joint of the frame, and then the sensor component 2 is installed in the right bowl component 6 from the left side of the frame to the right, which can save processing time, improve assembly efficiency, and avoid the retaining spring 7 from popping out and hitting the human body, thereby improving assembly safety. In addition, the bearing 3 and the retaining spring 7 can be pre-assembled into the right bowl component 4 in an automated or semi-automated manner (such as assembly by a robot), which can further improve assembly efficiency and save processing time.

[0051] On this basis, if Figure 5 As shown, the right bowl 4 forms a limiting groove 42, and the retaining spring 7 is installed in the limiting groove 42. By providing the limiting groove 42 for installing the retaining spring 7, the position of the retaining spring 7 can be fixed, and the limiting effect of the retaining spring 7 on the bearing 3 is improved.

[0052] In some embodiments, Figure 4 and Figure 5 As shown, the sensor fixing structure 100 further includes a toothed disc 5 and a fastener 9 . The toothed disc 5 is sleeved on the relative rotating portion 23 , and the toothed disc 5 and the relative rotating portion 23 are detachably connected via the fastener 9 .

[0053] The toothed disc 5 is provided with a toothed portion, which is used to cooperate with the chain or belt. The rotation of the toothed disc 5 drives the chain or belt to rotate. Figure 3 The toothed portion of the outer ring of the toothed disc 5 is not shown. The overall shape of the toothed disc 5 can be found in the attached Figure 4 In the toothed disc 5 structure, the toothed structure can be a toothed structure that matches a chain, or can be a toothed structure that matches a belt structure.

[0054] The fastener 9 is provided with a first thread segment 91, and the relative rotating part 23 is provided with a second thread segment 231. The first thread segment 91 is threadedly connected with the second thread segment 231, and the fastener 9 abuts against the side of the toothed disc 5 away from the bearing 3. In other words, the fastener 9 is a nut, and the toothed disc 5 and the relative rotating part 23 are detachably connected by thread connection, thereby improving the efficiency of installation and removal of the toothed disc 5. In addition, the threaded connection can achieve self-locking, so that the connection between the toothed disc 5 and the relative rotating part 23 is tighter and more reliable.

[0055] When installing the toothed disc 5, the main body 52 can be first sleeved on the relative rotating part 23, and the main body 52 and the relative rotating part 23 are connected by a tooth shape. Then, the first thread segment 91 on the fastener 9 is threadedly connected with the second thread segment 231, so that the fastener 9 abuts against the side of the toothed disc 5 away from the bearing 3.

[0056] In other embodiments, the fastener 9 can be a flange, which is directly locked on the relative rotating part 23 (the flange can be locked on the relative rotating part 23 by means of a threaded connection), one end of the flange directly abuts against the right end face of the inner ring of the bearing 3, and the corresponding gear disc 5 is then locked on the flange (the original toothed structure of the relative rotating part 23 and the gear disc 5 is cancelled); or the fastener 9 is eliminated, and threads are directly set on the gear disc 5, and the gear disc 5 is directly locked on the relative rotating part 23 by means of threads (the original toothed structure of the relative rotating part 23 and the gear disc 5 is cancelled).

[0057] In some embodiments, Figure 6 As shown, the relative rotating part 23 of the sensor assembly 2 forms a limiting step 233, the toothed disc 5 also includes a main body 52 and a limiting protrusion 53 connected thereto, the inner ring of the bearing 3 is assembled on the outer end face 232 of the relative rotating part 23 and abuts against the limiting step 233 on the left side, and the limiting step 233 is used to limit the inner ring of the bearing 3 from moving leftward. The right side of the inner ring of the bearing 3 abuts against the limiting protrusion 53, and then the limiting protrusion 53 of the toothed disc 5, the inner ring of the bearing 3, and the relative rotating part 23 are tightly locked and fixed together by the fastener 9, limiting the inner ring of the bearing 3 from moving rightward, thereby further preventing the toothed disc 5 from swinging and improving the reliability of the electric bicycle.

[0058] It can be understood that the inner ring diameter of the retaining spring 7 is relatively large, and the limiting protrusion 53 and the retaining spring 7 are arranged at radial intervals along the shaft rod 1 to ensure that the retaining spring 7 and the limiting protrusion 53 do not interfere or hinder each other, and the retaining spring 7 and the limiting protrusion 53 can jointly limit the bearing 3.

[0059] In some embodiments, see Fig. 9 , Fig. 9 It is a schematic exploded view of the right bowl member 4 and the relatively stationary portion 22 in the sensor fixing structure 100 according to an embodiment of the present application.

[0060] A first anti-rotation portion 41 is provided on one side of the right bowl 4 close to the relatively stationary portion 22, and a second anti-rotation portion 21 is provided on the outer circumferential surface 221 of the relatively stationary portion 22 close to the right bowl 4. The first anti-rotation portion 41 cooperates with the second anti-rotation portion 21 to prevent the relatively stationary portion 22 from rotating relative to the right bowl 4. By providing the first anti-rotation portion 41 and the second anti-rotation portion 21, the relatively stationary portion 22 and the right bowl 4 are kept relatively stationary, and the relatively stationary portion 22 is prevented from rotating relative to the right bowl 4.

[0061] The first anti-rotation part 41 may include at least one slot 411, and the second anti-rotation part 21 includes at least one tooth 211, and the tooth 211 is located in the slot 411. The slot 411 extends along the axial direction of the shaft 1, and the tooth 211 matches the slot 411, and the tooth 211 is located in the slot 411. By inserting the tooth 211 into the slot 411, the relative static part 22 is prevented from rotating relative to the right bowl 4.

[0062] The number of the slots 411 can be one, two or more, the number of the teeth 211 can be one, two or more, the slots 411 and the teeth 211 can be the same in number and arranged one-to-one, and the number of the teeth 211 can be less than the slots 411. By setting the number of the slots 411 to be multiple, the anti-rotation effect of the slots 411 can be improved, so that the force on the right bowl 4 is more uniform, thereby extending the service life of the right bowl 4.

[0063] The latching tooth 211 is provided with a guide notch 212, which guides the latching tooth 211 to be inserted more smoothly into the slot 411, thereby improving assembly efficiency. The slot 411 may also be provided with a guide notch 212 to further facilitate the insertion of the latching tooth 211 into the slot 411.

[0064] In addition, the present invention also provides an electric bicycle, including the sensor fixing structure 100 as described above. The specific structure of the sensor fixing structure 100 refers to the above embodiment. Since the electric bicycle adopts all the technical solutions of the above embodiment, it at least has all the beneficial effects brought by the technical solutions of the above embodiment, which will not be described one by one here.

[0065] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A sensor fixing structure, characterized in that: It includes a shaft rod, a sensor assembly and a right bowl assembly, the sensor assembly is sleeved on the outside of the shaft rod, the right bowl assembly includes a right bowl and a bearing, the right bowl is formed with a mounting groove, the inner surface of the bearing is clearance-matched with the outer surface of the sensor assembly, and the outer surface of the bearing is fixedly connected to the groove wall of the mounting groove.

2. The sensor fixing structure according to claim 1, characterized in that: The outer surface of the bearing is interference fit with the groove wall of the mounting groove.

3. The sensor fixing structure according to claim 1, characterized in that: A fixing glue is arranged between the outer surface of the bearing and the groove wall of the installation groove.

4. The sensor fixing structure according to claim 1, characterized in that: The right bowl component also includes a retaining spring, which is arranged in the right bowl component, and the bearing is located between the bottom wall of the mounting groove and the retaining spring.

5. The sensor fixing structure according to claim 4, characterized in that: The right bowl member forms a limiting groove, and the retaining spring is installed in the limiting groove.

6. The sensor fixing structure according to any one of claims 1 to 5, characterized in that: The sensor assembly includes a relatively rotating part and a relatively stationary part, and the inner surface of the bearing is clearance-matched with the outer surface of the relatively rotating part; the sensor fixing structure also includes a gear disk and a fastener, the gear disk is sleeved on the relatively rotating part, and the gear disk and the relatively rotating part are detachably connected via the fastener.

7. The sensor fixing structure according to claim 6, characterized in that: The fastener is provided with a first thread segment, the relatively rotating portion is provided with a second thread segment, the first thread segment is threadedly connected with the second thread segment, and the fastener abuts against a side of the toothed disc away from the bearing.

8. The sensor fixing structure according to claim 6, characterized in that: The relative rotating part forms a limiting step, the toothed disc comprises a main body and a limiting protrusion connected to each other, one side of the bearing abuts against the limiting step, and the other side of the bearing abuts against the limiting protrusion.

9. The sensor fixing structure according to claim 6, characterized in that: A first anti-rotation portion is provided on a side of the right bowl member close to the relatively stationary portion, and a second anti-rotation portion is provided on a side of the relatively stationary portion close to the right bowl member, wherein the first anti-rotation portion cooperates with the second anti-rotation portion to prevent the relatively stationary portion from rotating relative to the right bowl member.

10. The sensor fixing structure according to claim 9, characterized in that: The first anti-rotation portion includes at least one latching tooth, and the second anti-rotation portion includes at least one latching groove, wherein the latching tooth is located in the latching groove.

11. An electric bicycle, characterized in that: The electric bicycle comprises the sensor fixing structure according to any one of claims 1 to 10.

Images