TWI437169B - Multi - plate centrifugal clutch - Google Patents

Description

Multi-plate centrifugal clutch

This invention relates to a clutch, and more particularly to a multi-plate centrifugal clutch.

Referring to FIG. 1, the conventional multi-plate centrifugal clutch 1 is disposed on a transmission shaft 100. The multi-plate centrifugal clutch 1 includes a set of a boss 11 disposed on the transmission shaft 100, and a cover disposed on the transmission shaft 100. A housing 12 attached to the boss 11 , a mounting seat 13 disposed on the housing 12 , and a plurality of friction plates 14 respectively disposed on the housing 12 and the boss 11 are disposed on the mounting seat 13 . The rolling member 15 and a transmission gear shaft 16 connected to the boss 11 opposite to the outer casing 12.

Referring to FIG. 2 and FIG. 3, the mounting base 13 includes a seat body 131 disposed on the outer casing 12, and a plurality of mounting slots 132 formed on the seat body 131 at equal angular intervals, and a plurality of inclined protrusions are disposed on the base body. A guide rail 133 on the 131 and in each of the mounting slots 132. For convenience of description, FIGS. 2 and 3 are illustrated by a mounting groove 132 and a guide rail 133.

The rolling member 15 is disposed in a rolling manner in each of the mounting slots 132, and each of the rolling members 15 includes a roller 151 that is in rolling contact with the guiding rail 133, and two guiding wheels 152 on opposite sides of the roller 151. And a mandrel 153 extending through the roller 151 and the guide wheel 152. The radius of the guide wheel 152 is greater than the radius of the roller 15 to be engaged with the guide rail 133 by the guide wheel 152, thereby restricting the guide wheel 152 from rolling only along the guide rail 133. .

Referring to Figures 2 and 3, and referring back to Figure 1, when the rotational speed of the drive shaft 100 is greater than a certain value, the centrifugal force generated when the outer casing 12 rotates forces the rolling member 15 along each guide rail 133. Rolling away from the direction of the drive shaft 100, and as shown by the phantom line in FIG. 2, the friction plate 14 is forced against the friction plates 14 to abut each other to drive the boss 11 and the transmission gear shaft 16 to rotate. The power of the drive shaft 100 is output.

The centrifugal force is used to force the rolling member 15 to abut against the friction plate 14. Although the power of the transmission shaft 100 can be determined according to the rotation speed of the transmission shaft 100, the rolling member 15 must be along. The guiding rail 133 rolls to abut against the friction plate 14 , and therefore, the dimensional accuracy of the rolling member 15 and the guiding rail 133 is required to be high, resulting in high processing cost and processing of the rolling member 15 and the mounting seat 13 . The long time, the cost of manufacturing the multi-plate centrifugal clutch 1 is high.

Accordingly, it is an object of the present invention to provide a multi-plate centrifugal clutch which is low in processing cost and capable of shortening processing time.

Thus, the multi-plate centrifugal clutch of the present invention comprises a housing unit, a friction unit disposed in the housing unit, and a drive unit for driving the friction unit.

The housing unit includes a boss and a cover disposed on the outer casing of the boss; the friction unit includes a plurality of friction plates respectively spaced apart from the boss and the outer casing.

The driving unit includes a mounting seat disposed in the outer casing, and a plurality of swinging members pivotally disposed on the mounting seat at equal angular intervals, each of the swinging members Each has a mandrel pivoted on the mounting seat, and a swinging component disposed on the mandrel for moving between the abutting position and a non-abutting position with the mandrel, the swinging component of each swinging member has two a swing arm disposed on the mandrel, a shaft spaced from the mandrel and disposed in the swing arm, and a roller pivoted on the shaft, when the swinging member is located When the position is forced, the swinging member is pressed against the friction plate to abut the friction plates, and when the swinging member is in the non-forced position, the swinging member is rubbed with the friction The plates are spaced apart.

The utility model has the advantages that the swinging member which is pivotally disposed on the mounting seat and spaced between the pressing position and the non-abutting position can replace the existing multi-plate centrifugal clutch. The matching rolling elements and guiding rails can reduce the dimensional accuracy requirements between the components, thereby effectively reducing the processing cost and shortening the processing time.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments.

Referring to FIG. 4, a preferred embodiment of the multi-plate centrifugal clutch 2 of the present invention comprises a housing unit 3, a friction unit 4 disposed in the housing unit 3, and a driving unit 5 for driving the friction unit 4. And a transmission gear 6 connected to the housing unit 3.

The housing unit 3 includes a boss 31, and a cover 32 is disposed on the outer casing 32 of the boss 31; the friction unit 4 includes a plurality of friction plates 41 respectively spaced apart from the boss 31 and the outer casing 32; The transmission gear 6 is connected to The boss 31 is located on the opposite side of the outer casing 32.

Referring to FIGS. 4 and 5, the driving unit 5 includes a mounting seat 51 disposed in the housing 32, and a plurality of swinging members 52 pivotally mounted on the mounting seat 51 at equal angular intervals.

Referring to FIGS. 5 and 6, and referring back to FIG. 4, the mounting base 51 has a seat body 511 disposed in the outer casing 32, and a plurality of receiving grooves 512 formed on the seat body 511 at equal angular intervals. The positioning members 513 are disposed on the seat body 511 at equal intervals and correspondingly located in each of the receiving grooves 512. Moreover, each of the positioning members 513 is formed with a slot 514 having an opening 515 facing the boss 31.

Referring to FIGS. 7 and 8 , each of the oscillating members 52 is located in each of the accommodating slots 512 , and each of the oscillating members 52 has a spindle 521 pivotally disposed in the corresponding slot 514 of the positioning member 513 . And a swinging component 522 disposed on the mandrel 521. The swinging component 522 has two swinging arms 523 spaced apart from the spindle 521, a shaft 524 spaced from the spindle 521 and inserted into the swinging arm 523, and a pivoting rod Roller 525 on 524. Wherein, the diameter of each roller 525 is larger than the width of the swing arm 523.

In the embodiment, the opening 515 of each of the slots 514 is slightly larger than the diameter of the corresponding pivoting shaft 521. Of course, the opening 515 of each of the slots 514 may also be tapered as shown in FIG. For guiding and mounting of the mandrel 521.

Referring to FIGS. 10 and 11, the multi-plate centrifugal clutch 2 is mounted on a transmission shaft 201 of a locomotive 200 in a practical application. The transmission shaft 201 extends the transmission gear 6 and the boss 31 to the outer casing 32. Combine with each other.

When the rotational speed of the drive shaft 201 exceeds a certain value, the centrifugal force generated by the rotation of the outer casing 32 forces the swinging assembly 522 of the swinging member 52 to move from a non-forced position shown in FIG. 10 with each mandrel 521. To a forced position as shown in FIG.

Since the diameter of the roller 525 is larger than the width of each swing arm 523, the swing arm 523 does not move when the swinging assembly 522 of the swinging member 52 moves from the non-engaged position to the abutting position. In contact with the friction plate 41, and since the roller 525 is pivotally mounted on the shaft 524, the roller 525 of each swinging member 52 is rollingly urged against the friction plate 41, which not only forces the said The friction plates 41 abut against each other, thereby driving the boss 31 and the transmission gear 6, and the power of the transmission shaft 201 is outputted by the transmission gear 6, which can effectively reduce the wear and prolong the service life.

When the rotation speed of the transmission shaft 201 is less than the predetermined value, since the centrifugal force generated by the rotation of the outer casing 32 is insufficient, the swinging component 522 of the swinging member 52 is moved from the pressing position to the non-forced position, so that The roller 525 of each of the swinging members 522 can be spaced apart from the friction plate 41 to space the friction plates 41 from each other.

In summary, the multi-plate centrifugal clutch 2 of the present invention is pivotally disposed on the mounting seat 51 at equal angular intervals, and the swinging member 52 movable between the abutting position and the non-abutting position replaces the existing The matching rolling element 15 and the guiding rail 133 in the multi-plate centrifugal clutch 1 can not only reduce the dimensional accuracy requirement between components, but also effectively reduce the processing cost and shorten the processing time, and can still be based on the rotation speed of the transmission shaft 201. In order to determine whether or not the power is outputted by the transmission gear 6, it is indeed possible to achieve the object of the present invention. .

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

2‧‧‧Multi-plate centrifugal clutch

200‧‧‧ locomotive

201‧‧‧ drive shaft

3‧‧‧Sheet unit

31‧‧‧ Hub

32‧‧‧Shell

4‧‧‧Abrasion unit

41‧‧‧ Friction board

5‧‧‧ drive unit

51‧‧‧ Mounting

511‧‧‧ body

512‧‧‧ accommodating slots

513‧‧‧ Positioning parts

514‧‧‧ card slot

515‧‧‧ openings

52‧‧‧Swinging parts

521‧‧‧ mandrel

522‧‧‧Swing assembly

523‧‧‧ swing arm

524‧‧‧ shaft

525‧‧‧Roller

6‧‧‧Transmission gear

1 is a cross-sectional view showing a conventional multi-plate centrifugal clutch; FIG. 2 is a partially enlarged view showing a state of a mounting seat in a conventional multi-plate centrifugal clutch; and FIG. 3 is a partially enlarged view showing a conventional multi-plate centrifugal clutch FIG. 4 is a cross-sectional view showing a preferred embodiment of the multi-plate centrifugal clutch of the present invention; FIG. 5 is a plan view showing a state of the driving unit in the preferred embodiment; FIG. 6 is a partial perspective view FIG. 7 is a partially enlarged cross-sectional view showing a state of the swinging member in the preferred embodiment; FIG. 8 is another partially enlarged cross-sectional view, and FIG. 9 is a partially enlarged cross-sectional view showing a state of a card slot and an opening of another positioning member; FIG. 10 is a cross-sectional view showing the preferred embodiment in a non-forced position; Figure 11 is a cross-sectional view showing the preferred embodiment in a forced position.

2. . . Multi-plate centrifugal clutch

3. . . Housing unit

31. . . Hub

32. . . shell

4. . . Friction unit

41. . . Friction plate

5. . . Drive unit

51. . . Mount

511. . . Seat

512. . . Locating slot

513. . . Positioning member

514. . . Card slot

52. . . Swinging piece

523. . . Swing arm

525. . . Wheel

6. . . Transmission gear

Claims (7)

A multi-plate centrifugal clutch includes: a housing unit including a boss, and a cover disposed on the outer casing of the boss; a friction unit including a plurality of frictions respectively disposed on the boss and the outer casing And a driving unit, comprising: a mounting seat disposed in the outer casing; and a plurality of swinging members pivotally mounted on the mounting seat at equal angular intervals, each of the swinging members having a pivoting member a mandrel, and a swing assembly disposed on the mandrel for moving between the abutment position and a non-forced position with the mandrel, the swing assembly of each swing member having two swing arms spaced apart from the mandrel a shaft spaced from the mandrel and disposed in the swing arm, and a roller pivotally mounted on the shaft, the swinging member when the swinging member is in the pressing position The friction plates are urged against each other against the friction plate, and the swinging member is spaced apart from the friction plate when the swinging member is in the non-engaged position. The multi-plate centrifugal clutch according to claim 1, wherein the mounting seat has a seat body disposed in the outer casing, and a plurality of positioning members projecting on the seat body at equal angular intervals. The mandrel of the swinging member is correspondingly pivoted on each of the positioning members. The multi-plate centrifugal clutch of claim 2, wherein each of the positioning members of the mounting seat is formed with a slot for opening toward the boss, and the spindle of the swinging member is pivoted Corresponding in the card slot. The multi-plate centrifugal clutch according to claim 3, wherein the opening of the retaining groove of each of the positioning members is tapered. The multi-plate centrifugal clutch of claim 1, wherein, when the swinging assembly of the swinging member is in the abutting position, each roller is rollingly urged against the friction plate, and the pendulum The arm is not in contact with the friction plate, and when the swinging assembly of the swinging member is in the non-engaged position, the roller of each of the swinging members is spaced from the friction plate. According to the multi-plate centrifugal clutch of claim 2, the mounting base further includes a plurality of accommodating grooves formed at equal angles on the seat body, and the positioning members are located in each of the accommodating grooves. The multi-plate centrifugal clutch according to claim 1, further comprising a transmission gear connected to the boss.