Driven wheel of motorcycle clutch

Abstract

The invention belongs to the technical field of motorcycles, and particularly relates to a driven wheel of a motorcycle clutch, which comprises a friction disc and a shoe block assembly arranged in the friction disc, the friction disc is sleeved with a silencing ring, the silencing ring comprises a ring peripheral part and a ring end part, a plurality of through holes I are circumferentially distributed on the end surface of the friction disc, and the through holes I are communicated with the ring peripheral part. A circular hole is coaxially formed in the end of the ring, the radius of the circular hole is larger than the maximum distance between the axis of the friction disc and the first through hole, a plurality of first fan blades are distributed on the circumference of the outer side of the end face of the friction disc, and the number and the positions of the first fan blades are matched with those of the first through holes. Or a plurality of second through holes are distributed in the circumference of the ring end portion, the number and the positions of the second through holes are matched with those of the first through holes, a plurality of second fan blades are distributed on the circumference of the outer side of the ring end portion, and the number and the positions of the second fan blades are matched with those of the second through holes. The electric bicycle is good in heat dissipation effect, the friction material of the shoe block is effectively prevented from being ablated, then shaking during riding is avoided, the experience feeling of a rider is good, and the service life of the driven wheel is long.

Description

Technical field:

[0001] The invention belongs to the technical field of motorcycles, and in particular relates to a driven wheel of a motorcycle clutch. Background technology:

[0002] The continuously variable transmission clutch is a crucial component of a vehicle's powertrain. It achieves clutch engagement and automatic, continuously variable transmission through changes in engine speed. Typically, a motorcycle continuously variable transmission clutch consists of a driving pulley, a driven pulley, and a transmission belt. The driving pulley primarily comprises a drive plate, sliding pulley, sleeve, bushing, retaining ring, centrifugal ball bearing, drag flange, and guide block. The driven pulley primarily comprises a fixed plate assembly, a movable plate assembly, rolling bearings, needle bearings, an oil seal, an O-ring, a compression spring, a movable spring seat, a fixed spring seat, a shoe assembly, a tension spring, and a friction plate assembly. When the engine crankshaft rotates, the driving wheel drives the driven wheel via the transmission belt, and the shoe rotates synchronously with the driven wheel. Because the centrifugal force of the shoe is less than the tension of the tension spring, the shoe does not open to contact the friction disc. The rolling and needle bearings in the driven wheel disconnect the transmission from the driven wheel to the engine mainshaft. At this point, the engine mainshaft does not rotate, i.e., it is in a transmission disengaged state. As the engine crankshaft speed increases, the speed of the driven wheel also increases. When the centrifugal force generated by the shoe exceeds the tension of the tension spring, the shoe opens to engage the friction disc assembly. The friction disc assembly, through a spline connection, drives the engine mainshaft to achieve torque output. As the engine crankshaft speed changes further, the centrifugal thrust generated by the centrifugal balls in the driving wheel and the elastic force of the compression spring in the driven wheel balance each other, causing the working diameter of the transmission belt to change on the driving and driven wheels, thus achieving stepless speed change.

[0003] The disadvantage of the above clutch is that when the motorcycle is riding, the friction between the shoe and the friction plate generates a large amount of heat, and the heat dissipation speed is slow. When the heat dissipation effect is poor, it will cause the shoe friction material to burn, which will cause shaking during riding, the rider's experience is not good, and the service life of the driven wheel will be reduced. Summary of the invention:

[0004] The purpose of the present invention is to provide a driven wheel of a motorcycle clutch, which has good heat dissipation effect, effectively prevents the shoe friction material from being burned, thereby avoiding shaking during riding, provides a good rider experience, and prolongs the service life of the driven wheel.

[0005] The present invention is achieved in that:

[0006] A driven wheel of a motorcycle clutch comprises a friction disc and a shoe assembly arranged in the friction disc, wherein a silencer ring is provided on the outer surface of the friction disc, and the silencer ring comprises an annular portion arranged on the side wall of the friction disc and an annular end portion covering the end face of the friction disc, a plurality of through holes 1 are circumferentially distributed on the end face of the friction disc, a circular hole is coaxially provided on the annular end portion, the radius of the circular hole is greater than the maximum distance between the axis of the friction disc and the through hole 1, a plurality of fan blades 1 are circumferentially distributed on the outer side of the end face of the friction disc, and the number and position of the fan blades 1 are adapted to the through hole 1; or a plurality of through holes 2 are circumferentially distributed on the annular end portion, and the number and position of the through holes 2 are adapted to the through hole 1, a plurality of fan blades 2 are circumferentially distributed on the outer side of the ring end portion, and the number and position of the fan blades 2 are adapted to the through hole 2.

[0007] In the driven wheel of the above-mentioned motorcycle clutch, the through hole 1 is in the shape of a beveled fan ring, the fan blade 1 is linear and is arranged on the bevel of the through hole 1, and the extension line of each fan blade 1 is tangent to the same circle.

[0008] In the driven wheel of the above-mentioned motorcycle clutch, the oblique edge of the fan blade 1 and the through hole 1 is transitioned through the arc plate 1.

[0009] In the driven wheel of the above-mentioned motorcycle clutch, each side of the through hole 1 is transitioned through a rounded corner.

[0010] In the driven wheel of the above-mentioned motorcycle clutch, the second through hole is in the shape of a beveled fan ring, the second fan blade is linear and is arranged on the bevel of the second through hole, and the extension line of each fan blade is tangent to the same circle.

[0011] In the driven wheel of the above-mentioned motorcycle clutch, the second fan blade and the oblique edge of the second through hole are transitioned through the second arc-shaped plate.

[0012] In the above-mentioned driven wheel of a motorcycle clutch, the through hole one is a beveled fan-shaped ring, the two arcuate sides of the through hole one and the through hole two coincide with each other, the straight lines of the through hole one and the through hole two pointing to the axis coincide with each other, the straight line side of the through hole two not pointing to the axis is parallel to the straight line side of the through hole one not pointing to the axis, and compared with the straight line side of the through hole one not pointing to the axis, the straight line side of the through hole two not pointing to the axis is closer to its straight line side pointing to the axis.

[0013] In the driven wheel of the above-mentioned motorcycle clutch, each side of the through hole 1 is transitioned through rounded corners, and each of the two arcuate sides of the through hole 2 and the straight side pointing to the axis is transitioned through rounded corners.

[0014] In the driven wheel of the above-mentioned motorcycle clutch, the fan blade 1 is an integral structure with the friction plate and is formed by bending; the fan blade 2 is an integral structure with the ring end and is formed by bending.

[0015] In the driven wheel of the above-mentioned motorcycle clutch, the shoe assembly includes a fixed plate and a plurality of shoes mounted on the fixed plate, and two adjacent shoes are connected by a tension spring.

[0016] The advantages of the present invention compared to the prior art are:

[0017] The present invention arranges fan blade 1 on the outside of the end face of the friction disc or arranges fan blade 2 on the outside of the ring end of the silencer ring, so that the air outside the driven wheel enters the friction disc through the through hole 1 and flows out from the rear side of the friction disc, effectively dissipating the heat of the friction disc and the shoe assembly, and has a good heat dissipation effect, effectively preventing the shoe friction material from being burned, thereby avoiding shaking during riding, providing a good rider experience, and extending the service life of the driven wheel. Description of the drawings:

[0018] Figure 1 is a perspective view of embodiment 1 of the present invention;

[0019] Figure 2 is a cross-sectional view of embodiment 1 of the present invention;

[0020] Figure 3 This is a front view of the friction disc of Example 1 of the present invention;

[0021] Figure 4 is a perspective view of a muffler ring according to a first embodiment of the present invention;

[0022] Figure 5 is a perspective view of a second embodiment of the present invention;

[0023] Figure 6 is a cross-sectional view of a second embodiment of the present invention;

[0024] Figure 7 This is a front view of a silencer ring according to a second embodiment of the present invention;

[0025] Figure 8 It is a front view of the friction disc of the second embodiment of the present invention.

[0026] Figure numerals: 1, friction disc; 2, silencer ring; 2a, circumferential portion; 2b, ring end portion; 3, through hole one; 4, circular hole; 5, fan blade one; 6, through hole two; 7, fan blade two; 8, arc plate one; 9, arc plate two; 10, fixed disc; 11, shoe block; 12, tension spring. Specific implementation method:

[0027] The present invention will be further described below with reference to specific embodiments. Figure 1 —8:

[0028] Example 1: See Figure 1-4 :

[0029] A driven wheel of a motorcycle clutch comprises a friction disc 1 and a shoe assembly disposed within the friction disc 1. The friction disc 1 is sheathed with a silencer ring 2, the silencer ring 2 comprising an annular portion 2a disposed around the side wall of the friction disc 1 and an annular end portion 2b disposed over the end face of the friction disc 1. A plurality of through holes 3 are circumferentially distributed on the end face of the friction disc 1, the annular end portion 2b is coaxially provided with a circular hole 4, the radius of the circular hole 4 being greater than the maximum distance between the axis of the friction disc 1 and the through hole 3. A plurality of fan blades 5 are circumferentially distributed on the outer side of the end face of the friction disc 1, the number and position of the fan blades 5 being adapted to the through hole 3.

[0030] Working principle of embodiment 1: Figure 1-4 As shown, when the driven wheel rotates, the shoe 11 of the shoe assembly overcomes the elastic force of the tension spring 12 under the action of centrifugal force and expands outward, and fits against the friction disc 1, thereby driving the rotation of the friction disc 1. During the rotation of the friction disc 1, the fan blade 1 5 arranged on the outer side of its end surface rotates accordingly, pushing the air flow, thereby generating wind. The air outside the friction disc 1 enters the friction disc 1 through the through hole 1 3 and flows out from the rear side of the friction disc 1, effectively dissipating heat from the friction disc 1 and the shoe assembly. The good heat dissipation effect effectively prevents the friction material of the shoe 11 from being burned, thereby avoiding shaking during riding, providing a good rider experience, and extending the service life of the driven wheel.

[0031] The fan ring has two coaxial arc sides and two straight sides pointing to the axis. The difference between the bevel fan ring and the fan ring is that one of the straight sides does not point to the axis. The bevel side refers to the straight side that does not point to the axis.

[0032] The structure of through hole 13 and fan blade 15: the through hole 13 is a beveled fan ring, and the fan blade 15 is a straight line and is arranged on the bevel of the through hole 13. The extension line of each fan blade 15 is tangent to the same circle, which has good air intake and heat dissipation effects.

[0033] Furthermore, the fan blade 1 5 and the oblique side of the through hole 1 3 are transitioned through an arc plate 1 8 .

[0034] Furthermore, each side of the through hole 1 3 is transitioned through rounded corners.

[0035] Preferably, the through holes 3 and the fan blades 5 are evenly distributed around the circumference.

[0036] In order to facilitate processing and ensure a firm connection, the fan blade 5 and the friction disk 1 are an integrated structure and are formed by bending.

[0037] Structure of the shoe assembly: The shoe assembly includes a fixed plate 10 and a plurality of shoes 11 mounted on the fixed plate 10 , and two adjacent shoes 11 are connected by a tension spring 12 .

[0038] Example 2: See Figure 5-8 :

[0039] A driven wheel of a motorcycle clutch includes a friction disc 1 and a shoe assembly arranged within the friction disc 1. The friction disc 1 is sheathed with a silencer ring 2. The silencer ring 2 includes an annular portion 2a arranged around the side wall of the friction disc 1 and an annular end portion 2b covering the end face of the friction disc 1. A plurality of through holes 1 are circumferentially distributed on the end face of the friction disc 1. A plurality of through holes 2 are circumferentially distributed on the end face of the friction disc 1. A plurality of through holes 2 are circumferentially distributed on the annular end portion 2b, and the number and position of the through holes 2 6 match those of the through holes 1 3. A plurality of fan blades 2 are circumferentially distributed on the outer side of the annular end portion 2b, and the number and position of the fan blades 2 7 match those of the through holes 2 6.

[0040] Working principle of embodiment 2: Figure 5-8 As shown, when the driven wheel rotates, the shoe 11 of the shoe assembly overcomes the elastic force of the tension spring 12 under the action of centrifugal force and opens outward, and fits on the friction disc 1, thereby driving the friction disc 1 to rotate. When the friction disc 1 rotates, the silencer ring 2 mounted on the outside of it rotates. During the rotation of the silencer ring 2, the fan blade 2 7 arranged on the outside of its ring end 2b rotates accordingly, pushing the air flow, thereby generating wind, so that the air outside the silencer ring 2 enters the friction disc 1 through the through hole 2 6 and the through hole 1 3, and flows out from the rear side of the friction disc 1, effectively dissipating heat from the friction disc 1 and the shoe assembly. The good heat dissipation effect effectively prevents the friction material of the shoe 11 from being burned, thereby avoiding shaking during riding, providing a good rider experience, and extending the service life of the driven wheel.

[0041] The structure of through hole 2 6 and fan blade 7: the through hole 2 6 is a beveled fan ring, the fan blade 2 7 is a straight line, and is arranged on the bevel of the through hole 2 6. The extension line of each fan blade 2 7 is tangent to the same circle, which has good air intake and heat dissipation effects.

[0042] Furthermore, the oblique sides of the second fan blade 7 and the second through hole 6 are transitioned through the second arc plate 9 .

[0043] In order to achieve a better air intake effect, the through hole 1 3 is in the shape of a beveled fan ring, the two arc-shaped edges of the through hole 1 3 and the through hole 2 6 coincide with each other, the straight edges of the through hole 1 3 and the through hole 2 6 pointing to the axis coincide with each other, the straight edge of the through hole 2 6 not pointing to the axis is parallel to the straight edge of the through hole 1 3 not pointing to the axis, and compared with the straight edge of the through hole 1 3 not pointing to the axis, the straight edge of the through hole 2 6 not pointing to the axis is closer to its straight edge pointing to the axis.

[0044] Furthermore, each side of the through hole 1 3 is transitioned through rounded corners, and each of the two arc-shaped sides of the through hole 2 6 and the straight side pointing to the axis is transitioned through rounded corners.

[0045] In order to facilitate processing and ensure a firm connection, the second fan blade 7 and the ring end portion 2b are an integrated structure and are formed by bending.

[0046] Preferably, the through hole 1 3 , the through hole 2 6 and the fan blade 2 7 are evenly distributed around the circumference.

[0047] The above embodiment is only one of the preferred embodiments of the present invention and is not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made based on the shape, structure, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A driven wheel of a motorcycle clutch, comprising a friction disc (1) and a shoe assembly arranged inside the friction disc (1), wherein the friction disc (1) is sheathed with a silencer ring (2), the silencer ring (2) comprising an annular portion (2a) arranged around the side wall of the friction disc (1) and an annular end portion (2b) covering the end face of the friction disc (1), a plurality of through holes (3) distributed circumferentially on the end face of the friction disc (1), and characterized in that: The ring end portion (2b) is coaxially provided with a circular hole (4), the radius of the circular hole (4) is greater than the maximum distance between the axis of the friction disc (1) and the through hole 1 (3), and a plurality of blades 1 (5) are distributed circumferentially on the outer side of the end face of the friction disc (1), and the number and position of the blades 1 (5) are adapted to the through hole 1 (3); or a plurality of through holes 2 (6) are distributed circumferentially on the ring end portion (2b), and the number and position of the through holes 2 (6) are adapted to the through hole 1 (3), and a plurality of blades 2 (7) are distributed circumferentially on the outer side of the ring end portion (2b), and the number and position of the blades 2 (7) are adapted to the through hole 2 (6).

2. The driven wheel of a motorcycle clutch according to claim 1, characterized in that: The through hole one (3) is in the shape of a beveled fan ring, and the fan blade one (5) is in the shape of a straight line and is arranged on the beveled side of the through hole one (3), and the extension line of each fan blade one (5) is tangent to the same circle.

3. The driven wheel of a motorcycle clutch according to claim 2, characterized in that: The oblique sides of the fan blade 1 (5) and the through hole 1 (3) are transitioned through an arc plate 1 (8).

4. The driven wheel of a motorcycle clutch according to claim 2, characterized in that: The edges of the through hole 1 (3) are transitioned by rounded corners.

5. The driven wheel of a motorcycle clutch according to claim 1, characterized in that: The second through hole (6) is in the shape of a beveled fan ring, and the second fan blade (7) is in the shape of a straight line and is arranged on the beveled side of the second through hole (6). The extension line of each second fan blade (7) is tangent to the same circle.

6. The driven wheel of a motorcycle clutch according to claim 5, characterized in that: The oblique sides of the second fan blade (7) and the second through hole (6) are transitioned through the second arc plate (9).

7. The driven wheel of a motorcycle clutch according to claim 5, characterized in that: The through hole one (3) is in the shape of a beveled fan ring, the two arc sides of the through hole one (3) and the through hole two (6) coincide with each other, the straight sides of the through hole one (3) and the through hole two (6) pointing to the axis coincide with each other, the straight side of the through hole two (6) not pointing to the axis is parallel to the straight side of the through hole one (3) not pointing to the axis, and compared with the straight side of the through hole one (3) not pointing to the axis, the straight side of the through hole two (6) not pointing to the axis is closer to its straight side pointing to the axis.

8. The driven wheel of a motorcycle clutch according to claim 7, characterized in that: The edges of the through hole 1 (3) are transitioned by rounded corners, and the two arc-shaped edges of the through hole 2 (6) and the straight edge pointing to the axis are transitioned by rounded corners.

9. The driven wheel of a motorcycle clutch according to claim 1, characterized in that: The fan blade 1 (5) and the friction disc (1) are an integral structure and are formed by bending; the fan blade 2 (7) and the ring end portion (2b) are an integral structure and are formed by bending.

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