Silent hub

Abstract

The invention relates to the technical field of hubs, and discloses a mute hub which comprises an adjusting mechanism and further comprises a detection device and a fixing mechanism, the side face of the adjusting mechanism is fixedly connected with the side face of the fixing mechanism, the top end of the adjusting mechanism is connected with the bottom end of the detection device, and the side face of the detection device is connected with the side face of the fixing mechanism. The adjusting mechanism comprises an adjusting disc and a fixing disc, a movable sliding groove is formed in the side face of the adjusting disc, the side face of the adjusting disc is connected with the side face of the fixing disc, and an inner gear ring is fixedly connected to the inner side of the adjusting disc. The stability of the hub during installation is ensured, and loose or uneven load distribution during installation is avoided; and deformation of the rim is mechanized by arranging the pressing pipe and the elastic spring, so that repair or replacement is facilitated before the recess is further expanded, and the service life of the hub is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wheel hubs, and more particularly to a silent wheel hub. BACKGROUND

[0002] The wheel hub is also called wheel rim. According to the characteristics and needs of different vehicles, the surface treatment process of the wheel hub will also take different ways.

[0003] The basic parameters of the wheel hub include its size, width, pitch diameter, hole position, offset and center hole. The center hole is used for fixed connection with the vehicle, that is, the position of the hub center and the concentric circle of the hub. The diameter size here affects whether the installation of the wheel hub can ensure that the geometric center of the rim can coincide with the geometric center of the hub. The coincidence can ensure that the hub transmits the weight of the vehicle to the axle head through the center hole, thereby reducing the bearing load. Moreover, the correct matching of the center hole helps to reduce the vibration during driving. The wheel hub is composed of a rim and spokes. When the rim works for a long time or is subjected to strong impact or jolt, the rim will be deformed. However, both the mismatch of the center hole and the deformation of the rim will cause instability of the vehicle during driving.

[0004] Problems existing in the prior art: 1. When the wheel hub is fixed, the vehicle body is unbalanced during driving due to the asymmetric installation of the wheel, which may cause vibration or noise. The phenomenon may be caused by the difference in the size of the wheel required to be installed for different vehicles. In the case of a center hole that is too large and an axle diameter that is too small, an adapter ring can be added to increase the axle diameter to fill the difference between the two. However, in the case of a small center hole, it cannot be installed in this way. 2. The existing wheel hub has inaccurate steering during driving, and the control difficulty is enhanced. This may be due to the deformation of the rim. Since the rim is located below the tire during deformation, the condition of the rim cannot be observed from the outside, and it cannot be determined whether the phenomenon is caused by the uneven and bumpy road surface or by the deformation of the internal rim. Therefore, the subsequent detection is more complicated.

[0005] Therefore, the present application urgently needs to provide a silent wheel hub. SUMMARY

[0006] In order to overcome the above-mentioned defects of the prior art, the present application provides a silent wheel hub to solve the problem of instability of the vehicle during driving in the above background technology.

[0007] In order to achieve the above object, the present application provides the following technical scheme: A mute hub, comprising an adjusting mechanism, further comprising: a detection device and a fixing mechanism, the side surface of the adjusting mechanism is fixedly connected with the side surface of the fixing mechanism, the top end of the adjusting mechanism is connected with the bottom end of the detection device, the side surface of the detection device is connected with the side surface of the fixing mechanism, the adjusting mechanism comprises an adjusting disc and a fixed disc, the side surface of the adjusting disc is provided with a moving sliding groove, the side surface of the adjusting disc is connected with the side surface of the fixed disc, the inner side of the adjusting disc is fixedly connected with an inner tooth ring, the side surface of the inner tooth ring is connected with a driving gear, the side surface of the driving gear is fixedly connected with a rotating shaft, the top end of the rotating shaft is fixedly connected with a micro motor, and the bottom end of the micro motor is fixedly connected with the side surface of the fixed disc.

[0008] Further, the top end of the fixed disc is provided with a T-shaped fixed groove, the inner side of the T-shaped fixed groove is connected with the bottom end of the detection device, the side surface of the fixed disc is provided with a T-shaped sliding groove, the inner side of the T-shaped sliding groove is connected with a T-shaped moving block, the top end of the T-shaped moving block is fixedly connected with an adjusting plate, the side surface of the T-shaped moving block is connected with the inner side of the adjusting disc, and the side surface of the adjusting plate is fixedly connected with an anti-skid pattern.

[0009] Further, the side surface of the fixed disc is provided with a rotating groove, the inner side of the rotating groove is connected with the side surface of the rotating shaft, the side surface of the fixed disc is fixedly connected with the side surface of the fixing mechanism, the inner side of the adjusting plate is fixedly connected with a fixed bearing, the side surface of the fixed bearing is fixedly connected with the top end of the anti-skid pattern, and the side surface of the T-shaped moving block is connected with the inner side of the moving sliding groove.

[0010] Further, the detection device comprises a pressing pipe and a rotating rod, the side surface of the pressing pipe is provided with a guide sliding groove, the inner side of the pressing pipe is fixedly connected with an elastic spring, the bottom end of the elastic spring is fixedly connected with a fixed plate, the bottom end of the fixed plate is connected with the top end of the rotating rod, the inner side of the guide sliding groove is connected with a limiting ring, the inner side of the limiting ring is fixedly connected with a fixed sliding block, and the top end of the pressing pipe is connected with the inner side of the fixing mechanism.

[0011] Further, the side surface of the rotating rod is fixedly connected with a fixed ring, the bottom end of the rotating rod is fixedly connected with a limiting plate, the side surface of the limiting plate is connected with the inner side of the T-shaped fixed groove, the side surface of the rotating rod is connected with the inner side of the T-shaped fixed groove, the side surface of the fixed ring is fixedly connected with a detection rod, and the top end of the detection rod is connected with the side surface of the fixing mechanism.

[0012] Further, the top end of the rotating rod is fixedly connected with a limiting pipe, the side surface of the limiting pipe is provided with a guide arc groove, the inner side of the guide arc groove is connected with the side surface of the fixed sliding block, the top end of the limiting pipe is connected with the bottom end of the fixed plate, and the side surface of the rotating rod is connected with the inner side of the pressing pipe.

[0013] Further, the fixing mechanism comprises a fixing rim and a fixing spoke, the inner side of the fixing rim is fixedly connected with the top end of the fixing spoke, the bottom end of the fixing spoke is fixedly connected with a mounting ring, the inner side of the mounting ring is fixedly connected with a fixing block, and the side surface of the fixing block is fixedly connected with the side surface of the fixing disc.

[0014] Further, the inner side of the fixing rim is connected with the top end of the pressing pipe, and the side surface of the fixing spoke is connected with the top end of the detection rod.

[0015] Technical effects and advantages of the present application: 1. The present application is provided with an adjusting mechanism, which is beneficial to the hub adapting to more types of axles, expanding the application range of the hub, and facilitating the exchange or upgrade of hubs between different vehicles; the diameter of the hub center hole is just right, which can better butt joint with the axle, ensuring the stability of the hub during installation, avoiding loose or uneven load distribution during installation, and this stability is crucial to driving performance and safety; by adjusting the diameter of the center hole, more accurate installation can be ensured, reducing the situation of unsymmetrical wheel installation caused by mismatched center hole diameter, thereby causing imbalance and vibration or noise; in actual application, if the center hole diameter of the hub is larger than the axle, an adapter ring can be used to fill the gap in the middle, ensuring more accurate cooperation between the hub and the axle, and the adapter ring helps the oversized center hole to better butt joint with the axle, thereby improving stability and reducing imbalance.

[0016] 2. The present application is provided with a detection device, which is beneficial to ensuring the uniform stress of the hub and maintaining the maneuverability and comfort of the vehicle; the detection device can be repaired or replaced before the recess is further expanded, thereby prolonging the service life of the hub; the recess may cause poor sealing between the tire and the rim, which may lead to air leakage, timely detection and repair of the recess can effectively ensure good contact between the tire and the rim, ensuring normal inflation and use of the tire; by finding and repairing the recess at an early stage, more extensive damage can be avoided, reducing the cost of replacing the entire hub due to severe damage; by detecting and repairing the recess, the balance of the hub can be maintained, thereby providing a more stable driving experience. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the adjusting mechanism structure of the present application; Figure 3 It is a schematic diagram of the local structure of the adjusting mechanism of the present application; Figure 4 It is a schematic diagram of the adjusting mechanism sectional view structure of the present application; Figure 5It is a schematic view of the adjusting plate structure of the present application. Figure 6 It is a schematic view of the detection device structure of the present application. Figure 7 It is a schematic view of the detection device sectional view structure of the present application. Figure 8 It is a schematic view of the detection device local structure of the present application. Figure 9 It is a schematic view of the fixing mechanism structure of the present application. Figure 10 It is a schematic view of the compression structure of the detection device of the present application.

[0018] The reference signs are: 1, adjusting mechanism; 101, adjusting disc; 1011, moving sliding groove; 1012, inner tooth ring; 102, fixed disc; 1021, T-shaped fixed groove; 1022, T-shaped sliding groove; 1023, rotating groove; 103, adjusting plate; 104, fixed bearing; 105, driving gear; 106, micro motor; 107, rotating shaft; 108, T-shaped moving block; 109, anti-skid pattern; 2, detection device; 201, pressing pipe; 2011, guide sliding groove; 2012, elastic spring; 2013, fixed plate; 2014, fixed sliding block; 2015, limiting ring; 202, rotating rod; 2021, limiting pipe; 2022, guide arc groove; 203, limiting plate; 204, fixed ring; 205, detection rod; 3, fixing mechanism; 301, fixed rim; 302, fixed spoke; 303, mounting ring; 304, fixed block. DETAILED DESCRIPTION

[0019] The technical solutions in the present application will be described clearly and completely below in combination with the drawings in the present application, and in addition, the forms of each structure described in the following embodiments are only examples, and the silent hub involved in the present application is not limited to each structure described in the following embodiments, and all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0020] With reference to Figure 1 , the present application provides a silent hub, which comprises an adjusting mechanism 1, and further comprises a detection device 2 and a fixing mechanism 3, the side surface of the adjusting mechanism 1 is fixedly connected with the side surface of the fixing mechanism 3, the top end of the adjusting mechanism 1 is connected with the bottom end of the detection device 2, and the side surface of the detection device 2 is connected with the side surface of the fixing mechanism 3. The adjusting mechanism 1 comprises an adjusting disc 101 and a fixed disc 102, the side of the adjusting disc 101 is provided with a moving sliding groove 1011, the side of the adjusting disc 101 is connected with the side of the fixed disc 102, the inner side of the adjusting disc 101 is fixedly connected with an inner tooth ring 1012, the side of the inner tooth ring 1012 is connected with a driving gear 105, the side of the driving gear 105 is fixedly connected with a rotating shaft 107, the top end of the rotating shaft 107 is fixedly connected with a micro motor 106, and the bottom end of the micro motor 106 is fixedly connected with the side of the fixed disc 102.

[0021] Please refer to Figure 2 The top end of the fixed disc 102 is provided with a T-shaped fixed groove 1021, the inner side of the T-shaped fixed groove 1021 is connected with the bottom end of the detection device 2, the side of the fixed disc 102 is provided with a T-shaped sliding groove 1022, the inner side of the T-shaped sliding groove 1022 is connected with a T-shaped moving block 108, the top end of the T-shaped moving block 108 is fixedly connected with an adjusting plate 103, the side of the T-shaped moving block 108 is connected with the inner side of the adjusting disc 101, and the side of the adjusting plate 103 is fixedly connected with an anti-skid pattern 109.

[0022] Please refer to Figure 3 , Figure 4 and Figure 5 The T-shaped moving block 108 fixed at the bottom end of the adjusting plate 103 passes through the moving sliding groove 1011 provided on the side of the adjusting disc 101 and is fixed on the inner side of the T-shaped sliding groove 1022 provided on the side of the fixed disc 102, the rotation of the driving gear 105 drives the inner tooth ring 1012 fixed on the inner side of the adjusting disc 101 to rotate and move, the rotation of the adjusting disc 101 drives the T-shaped moving block 108 and the adjusting plate 103 to move along the inner side of the moving sliding groove 1011, so that the plurality of adjusting plates 103 are simultaneously contracted or expanded, in order to make the adjusting plate 103 move without following the rotation of the adjusting disc 101, the T-shaped moving block 108 slides in the T-shaped sliding groove 1022 to ensure that the contraction or expansion path of the adjusting plate 103 is smoother, and the micro motor 106 is fixed on the side of the fixed disc 102 to ensure that the position of the driving gear 105 is fixed and better engaged with the side of the inner tooth ring 1012.

[0023] Please refer to Figure 4 The side of the fixed disc 102 is provided with a rotating groove 1023, the inner side of the rotating groove 1023 is connected with the side of the rotating shaft 107, the side of the fixed disc 102 is fixedly connected with the side of the fixing mechanism 3, the inner side of the adjusting plate 103 is fixedly connected with a fixed bearing 104, the side of the fixed bearing 104 is fixedly connected with the top end of the anti-skid pattern 109, and the side of the T-shaped moving block 108 is connected with the inner side of the moving sliding groove 1011.

[0024] Please refer to Figure 2 and Figure 5The fixed bearing 104 is fixed on the inner side of the adjusting plate 103, and can better connect the axle, make the rotating process more smooth, and the anti-skid lines 109 fixed on the inner side of the adjusting plate 103 can enhance the friction force of the adjusting plate 103 clamping, and the fixed bearing 104 can also be used as an adjusting ring.

[0025] Please check Figure 1 The detection device 2 comprises a pressing pipe 201 and a rotating rod 202. A guide sliding groove 2011 is formed in the side of the pressing pipe 201. An elastic spring 2012 is fixedly connected to the inner side of the pressing pipe 201. A fixed plate 2013 is fixedly connected to the bottom end of the elastic spring 2012. The bottom end of the fixed plate 2013 is connected to the top end of the rotating rod 202. The inner side of the guide sliding groove 2011 is connected with a limiting ring 2015. The inner side of the limiting ring 2015 is fixedly connected with a fixed sliding block 2014. The top end of the pressing pipe 201 is connected to the inner side of the fixing mechanism 3.

[0026] The top end of the pressing pipe 201 is not fixedly connected to the inner side of the fixing rim 301, so that the force generated when the top end of the fixing rim 301 deforms can be instantaneously sensed by the pressing pipe 201 and a pressing action can be performed, so as to ensure the sensitivity of the detection device 2.

[0027] The side of the rotating rod 202 is fixedly connected with a fixed ring 204. The bottom end of the rotating rod 202 is fixedly connected with a limiting plate 203. The side of the limiting plate 203 is connected to the inner side of the T-shaped fixed groove 1021. The side of the rotating rod 202 is connected to the inner side of the T-shaped fixed groove 1021. The side of the fixed ring 204 is fixedly connected with a detection rod 205. The top end of the detection rod 205 is connected to the side of the fixing mechanism 3.

[0028] The top end of the rotating rod 202 is fixedly connected with a limiting pipe 2021. The side of the limiting pipe 2021 is provided with a guide arc groove 2022. The inner side of the guide arc groove 2022 is connected to the side of the fixed sliding block 2014. The top end of the limiting pipe 2021 is connected to the bottom end of the fixed plate 2013. The side of the rotating rod 202 is connected to the inner side of the pressing pipe 201.

[0029] Please refer to Figure 6 , Figure 7 and Figure 8When the pressing pipe 201 is pressed, the fixed plate 2013 is pressed against the limiting pipe 2021, and the elastic spring 2012 is deformed, but the deformation of the elastic spring 2012 can be converted into pressure to the limiting pipe 2021. Since the fixed plate 2013 is not fixedly connected with the limiting pipe 2021 but only in contact, the fixed sliding block 2014 fixed on the side of the pressing pipe 201 slides in the inner side of the guide arc groove 2022, drives the limiting pipe 2021 and the rotating rod 202 to rotate, so that the elastic deformation of the elastic spring 2012 is converted into the rotating kinetic energy of the rotating rod 202. With the rotation of the rotating rod 202, the angle of the detection rod 205 changes. The bottom end of the rotating rod 202 is fixed on the top end of the fixed disc 102, and the T-shaped fixed groove 1021 allows it to rotate in the inner side of the T-shaped fixed groove 1021. The limiting plate 203 can limit the inner side of the T-shaped fixed groove 1021 to fix the overall mechanism of the detection device 2.

[0030] The fixing mechanism 3 includes a fixed rim 301 and a fixed spoke 302. The inner side of the fixed rim 301 is fixedly connected with the top end of the fixed spoke 302. The bottom end of the fixed spoke 302 is fixedly connected with a mounting ring 303. The inner side of the mounting ring 303 is fixedly connected with a fixed block 304. The side surface of the fixed block 304 is fixedly connected with the side surface of the fixed disc 102.

[0031] The inner side of the fixed rim 301 is connected with the top end of the pressing pipe 201. The side surface of the fixed spoke 302 is connected with the top end of the detection rod 205.

[0032] Please refer to Figure 9 and Figure 10 After the detection rod 205 is rotated by the elastic action of the elastic spring 2012, the top end of the detection rod 205 touches the inner side of the fixed spoke 302. The sound of the impact can remind the driver of the fault at this place, which is also conducive to troubleshooting the fault signal at this place during maintenance.

[0033] The working principle of the present application: when the fixed rim 301 is fixed to the axle, the top end of the fixed block 304 is fixed to the fixed disc 102 due to the size difference of the axle, the micro motor 106 is started to drive the driving gear 105 to rotate on the side of the inner tooth ring 1012 inside the adjusting disc 101, the T-shaped moving block 108 fixed inside the sliding groove 1011 is widened outward due to the meshing between the driving gear 105 and the inner tooth ring 1012, the fixed range of the adjusting plate 103 can be adjusted according to the size of the axle, the appropriate fixed bearing 104 is fixed inside the adjusting plate 103, the fixed bearing 104 is fixed to the axle, the adjusting plate 103 is expanded outwardly by the sliding groove 1011, the side of the T-shaped moving block 108 slides with the inner side of the T-shaped sliding groove 1022 and guarantees the moving direction of the adjusting plate 103, so as to fix the fixed bearing 104.

[0034] The rotating rod 202 is connected to the inner side of the T-shaped fixed groove 1021, the limiting plate 203 fixed to the bottom end of the rotating rod 202 can be clamped to the inner side of the T-shaped fixed groove 1021, so that the rotating rod 202 can rotate and will not come off from the side of the rotating rod 202, when the surface of the fixed rim 301 is impacted, the surface of the fixed rim 301 is deformed, the force generated by such deformation acts on the top end of the pressing pipe 201, the pressing pipe 201 moves downward and compresses the elastic spring 2012 fixed inside the pressing pipe 201, the deformation of the elastic spring 2012 makes the elastic potential energy inside act on the limiting pipe 2021 at the bottom end of the fixed plate 2013, but the limiting pipe 2021 is provided with a guide arc groove 2022 on the side, and the bottom end of the fixed sliding block 2014 is clamped to the inner side of the guide arc groove 2022 and can slide along the guide arc groove 2022, the fixed sliding block 2014 is fixed to the inner side of the guide sliding groove 2011 through the limiting ring 2015, so when the pressing pipe 201 moves downward, the fixed sliding block 2014 will slide inside the guide sliding groove 2011, the pressing of the pressing pipe 201 will make the limiting pipe 2021 rotate under the sliding of the fixed sliding block 2014, the limiting pipe 2021 drives the rotating rod 202 to rotate, and the rotating rod 202 drives the detection rod 205 fixedly connected to the side to rotate after rotating, and the top end of the detection rod 205 will lightly touch the inner side of the fixed spoke 302.

[0035] The deformation of the fixed rim 301 may be due to the bumping of the fixed rim 301 when passing through obstacles, so that the fixed rim 301 deforms in a short time, or the surface of the fixed rim 301 is depressed due to the long-time bumping of the fixed rim 301, so the position of the detection rod 205 can be judged by the position of the detection rod 205, the simple and slight rotation of the detection rod 205 indicates that the fixed rim 301 can continue to work, and when the detection rod 205 is fixed after rotating, the impact of the fixed spoke 302 contacting the detection rod 205 can remind the driver to find the problem.

[0036] The above merely provides the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall fall within the protection scope of the present application.

Claims

1. A silent wheel hub, comprising an adjustment mechanism (1), characterized in that: Also includes: A detection device (2) and a fixing mechanism (3), wherein the side of the adjustment mechanism (1) is fixedly connected to the side of the fixing mechanism (3), the top of the adjustment mechanism (1) is connected to the bottom of the detection device (2), and the side of the detection device (2) is connected to the side of the fixing mechanism (3); The adjusting mechanism (1) comprises an adjusting disk (101) and a fixed disk (102); a movable sliding groove (1011) is provided on a side surface of the adjusting disk (101); the side surface of the adjusting disk (101) is connected to a side surface of the fixed disk (102); an inner gear ring (1012) is fixedly connected to the inner side of the adjusting disk (101); a driving gear (105) is connected to the side surface of the inner gear ring (1012); a rotating shaft (107) is fixedly connected to the side surface of the driving gear (105); a micro motor (106) is fixedly connected to the top end of the rotating shaft (107); and a bottom end of the micro motor (106) is fixedly connected to the side surface of the fixed disk (102).

2. The silent wheel hub according to claim 1, characterized in that: The top of the fixed disk (102) is provided with a T-shaped fixed groove (1021), the inner side of the T-shaped fixed groove (1021) is connected to the bottom end of the detection device (2), the side of the fixed disk (102) is provided with a T-shaped sliding groove (1022), the inner side of the T-shaped sliding groove (1022) is connected to a T-shaped moving block (108), the top of the T-shaped moving block (108) is fixedly connected to an adjustment plate (103), the side of the T-shaped moving block (108) is connected to the inner side of the adjustment disk (101), and the side of the adjustment plate (103) is fixedly connected to an anti-slip groove (109).

3. The silent wheel hub according to claim 2, characterized in that: A rotating groove (1023) is formed on the side of the fixed disk (102), the inner side of the rotating groove (1023) is connected to the side of the rotating shaft (107), the side of the fixed disk (102) is fixedly connected to the side of the fixing mechanism (3), the inner side of the adjusting plate (103) is fixedly connected to a fixed bearing (104), the side of the fixed bearing (104) is fixedly connected to the top of the anti-slip groove (109), and the side of the T-shaped moving block (108) is connected to the inner side of the moving slide groove (1011).

4. The silent wheel hub according to claim 2, characterized in that: The detection device (2) comprises a downward pressure tube (201) and a rotating rod (202); a guide slot (2011) is provided on the side of the downward pressure tube (201); an elastic spring (2012) is fixedly connected to the inner side of the downward pressure tube (201); a fixed plate (2013) is fixedly connected to the bottom end of the elastic spring (2012); the bottom end of the fixed plate (2013) is connected to the top end of the rotating rod (202); a limiting ring (215) is connected to the inner side of the guide slot (2011); a fixed slider (2014) is fixedly connected to the inner side of the limiting ring (2015); and the top end of the downward pressure tube (201) is connected to the inner side of the fixing mechanism (3).

5. The silent wheel hub according to claim 4, characterized in that: The side of the rotating rod (202) is fixedly connected to a fixing ring (204), the bottom end of the rotating rod (202) is fixedly connected to a limiting plate (203), the side of the limiting plate (203) is connected to the inner side of the T-shaped fixing groove (1021), the side of the rotating rod (202) is connected to the inner side of the T-shaped fixing groove (1021), the side of the fixing ring (204) is fixedly connected to a detection rod (205), and the top end of the detection rod (205) is connected to the side of the fixing mechanism (3).

6. The silent wheel hub according to claim 5, characterized in that: The top end of the rotating rod (202) is fixedly connected to the limiting tube (2021), the side of the limiting tube (2021) is provided with a guide arc groove (2022), the inner side of the guide arc groove (2022) is connected to the side of the fixed slider (2014), the top end of the limiting tube (2021) is connected to the bottom end of the fixed plate (213), and the side of the rotating rod (202) is connected to the inner side of the downward pressure tube (201).

7. The silent wheel hub according to claim 5, characterized in that: The fixing mechanism (3) comprises a fixed rim (301) and a fixed spoke (302); the inner side of the fixed rim (301) is fixedly connected to the top end of the fixed spoke (302); the bottom end of the fixed spoke (302) is fixedly connected to a mounting ring (303); the inner side of the mounting ring (303) is fixedly connected to a fixing block (304); and the side surface of the fixing block (304) is fixedly connected to the side surface of the fixing disk (102).

8. The silent wheel hub according to claim 7, characterized in that: The inner side of the fixed rim (301) is connected to the top end of the down-pressing tube (201), and the side surface of the fixed spoke (302) is connected to the top end of the detection rod (205).

Images