CN104455080B - Lever centrifugal clutch - Google Patents

Abstract

The invention discloses a lever centrifugal clutch comprising a driving disc, at least two centrifugal mechanisms and a driven disc. Each centrifugal mechanism comprises a centrifugal member, a deformed lever and a tensions spring and further comprises a positioning post. Each positioning post is movably sleeved with one end of the centrifugal member of one centrifugal mechanism and one end of the deformed lever on the adjacent centrifugal mechanism sequentially from bottom to top. Each tension spring allowing the deformed bars to return is disposed between every two adjacent deformed levers. The deformed levers are overlap-fastened to the centrifugal members by means of fitting of grooves and tongues and apply forces to the centrifugal members. As each centrifugal mechanism comprises only one positioning post, the structure of the driving disc is simplified, the manufacturing process is simplified, the production cost is lowered, the structure of the clutch is simplified, mounting and demounting are facilitated, maintenance cost is lowered, and workload is reduced for workers; shockproof washers are provided on the centrifugal members and the deformed levers, shocking of the clutch is avoided, noise is reduced, and the service life of the clutch is prolonged.

Description

A lever centrifugal clutch

technical field

The invention relates to a clutch, in particular to a lever centrifugal clutch.

Background technique

The existing centrifugal automatic clutch has a basic structure consisting of a driving part, a centrifugal body, a driven part and a tension spring. Transmission torque (power), when the speed is lower than the set speed (starting speed), the centrifugal body is pulled back by the return spring, the centrifugal body is completely separated from the friction disc, and the contact (power) is broken. In actual use, this centrifugal clutch will be subjected to the action of the return spring all the time, and the power loss is relatively serious. To overcome the above deficiencies, reduce power loss. In addition, in some cases where the engine speed is low, such as a tiller, the tiller cannot be used normally. For this reason, I have designed a lever centrifugal clutch, which has applied for an invention patent. The name: "Lever centrifugal clutch "(application number: 201310402196.2).

In view of the above-mentioned structure in the previous invention patent that "each group of cylinders includes a centrifuge positioning column and a special-shaped lever positioning column, the centrifuge positioning column is close to the edge, and the special-shaped lever positioning column is arranged inside the centrifuge positioning column", In practical application and production, the structure is complicated, the processing is difficult, the material requirements are high, and the interaction between the special-shaped lever and the centrifuge produces vibration during the movement, which will damage the performance and service life of the product.

Contents of the invention

In order to overcome the deficiencies in the background technology, the lever centrifugal clutch is improved with a simpler and more practical structure. The invention provides a lever centrifugal clutch, in which a positioning column is arranged on the drive plate, and one end of a centrifuge body of a group of centrifugal mechanisms and one end of a special-shaped lever of an adjacent group of centrifugal mechanisms are movably socketed on the same positioning column On the centrifuge and the special-shaped lever clamping position is provided with anti-vibration washers. Through this structure, the processing of the driving disc and the installation and disassembly of the centrifugal body and the special-shaped lever are simplified, and the friction vibration caused by the mutual movement of the centrifugal body and the special-shaped lever is prevented during the operation of the clutch, and the service life of the clutch is extended. Under the circumstances, the structure is simplified and the cost is reduced.

In order to solve the above technical problems, the technical solution adopted in the present invention is: a lever centrifugal clutch, including a driving disc, at least two sets of centrifugal mechanisms and a driven disc, the driving disc is connected to an external power source, and the driven disc is buckled in the centrifugal mechanism On the edge, a power output mechanism is provided on the driven plate. The centrifugal mechanism includes a centrifugal body, a special-shaped lever and a tension spring, and each set of centrifugal mechanisms is provided with a positioning column, and the positioning column is set in sequence from bottom to top. There is one end of the centrifuge body of one group of centrifugal mechanisms and one end of the special-shaped lever of the adjacent centrifugal mechanism to realize the end-to-end connection of two adjacent centrifugal mechanisms. A tension spring for resetting the special-shaped lever is arranged between the adjacent special-shaped levers, and the special-shaped lever The centrifuge overlaps and engages with the centrifuge through the cooperation of the groove and the protrusion, and exerts force on the centrifuge.

As a further configuration, the centrifugal body is a crescent-shaped structure, and a concave part is provided in the middle of the special-shaped lever, and a part of the centrifugal body is clamped in the concave part.

As a further configuration, the centrifugal body is a crescent-shaped structure, and a concave part is provided in the middle of the centrifugal body, and a part of the special-shaped lever is clamped in the concave part.

As a further setting, the centrifuge is a crescent-shaped mechanism, a protrusion A is provided in the middle of the centrifuge, and a concave groove A matching the protrusion A is provided on the special-shaped lever, and the protrusion A is locked. Set in the concave groove A.

As a further setting, the centrifuge is a crescent-shaped mechanism, a concave groove B is provided in the middle of the centrifuge, and a protrusion B matching the concave groove B is provided on the special-shaped lever, and the protrusion B is clamped. In the recessed groove B.

As a further configuration, the protrusion A or the recessed groove A is provided with an anti-vibration washer.

As a further configuration, the protrusion B or the concave groove B is provided with an anti-vibration washer.

The beneficial effects of the present invention are: compared with the prior art, the centrifuge body and the fixed end of the special-shaped lever are movably socketed on the same positioning column, and only one positioning column is provided for each group of centrifugal mechanisms, which simplifies the structure of the driving disc and simplifies The processing process is simplified, the production cost is reduced, and the centrifuge body and the special-shaped lever are superimposed and socketed on the positioning column from bottom to top, which makes the structure of the clutch simple, easy to disassemble and install, reduces maintenance costs, and reduces the labor of workers.

Anti-vibration washers are provided on the centrifuge and the special-shaped lever to prevent friction and collision between the centrifuge and the special-shaped lever during operation, avoid vibration of the clutch, reduce noise, and prolong the service life of the clutch.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a structural schematic diagram of the driving disk of the present invention.

Fig. 3 is a structural schematic diagram of the driven disk of the present invention.

Fig. 4 is a schematic structural view of the centrifuge of the present invention.

Fig. 5 is a structural schematic diagram of the special-shaped lever of the present invention.

Fig. 6 is another structural schematic diagram of the centrifuge of the present invention.

Fig. 7 is another structural schematic diagram of the special-shaped lever of the present invention.

Icon marks: 1, driving disc, 2, centrifugal body, 201, protruding body A, 202, recessed groove B, 3, special-shaped lever, 301, recessed groove A, 302, protruding body B, 4, positioning column, 5, extension spring, 6, buffer block, 7, buffer washer, 8, driven disc.

detailed description

The embodiments of the present invention will be described in detail in conjunction with the accompanying drawings.

A lever centrifugal clutch, including a driving disc, a centrifugal mechanism and a driven disc, the driving disc is connected to an external power source, the driven disc is buckled on the edge of the centrifugal mechanism, and a power output mechanism is provided on the driven disc, adjacent to two groups The centrifugal mechanism is connected end to end and evenly distributed on the drive plate. The centrifugal mechanism includes a centrifugal body, a special-shaped lever and a tension spring. A positioning column is arranged on the driving plate. The centrifugal body is a crescent-shaped structure. One end of the centrifugal body is provided with a socket A, and the socket A penetrates from the upper surface of one end of the centrifugal body to the lower surface, and a protrusion A is mainly provided on one side of the centrifugal body near the middle, and the special-shaped lever is a long pumpkin-shaped structure , A socket B is provided at one end of the special-shaped lever, and the socket B penetrates from the upper surface of one end of the special-shaped lever to the lower surface, and a concave groove A matching the protrusion A is provided on the special-shaped lever. The two ends of the special-shaped lever are respectively provided with connection holes, and the two ends of the extension spring are respectively connected to the connection holes of two special-shaped levers connected end to end, so that each special-shaped lever is connected into an integral structure and is arranged on the centrifugal body. The socket A of the centrifugal body of the group of centrifugal mechanisms and the socket B of the special-shaped lever of the adjacent group of centrifugal mechanisms are sleeved on the positioning column, and the centrifugal body and the special-shaped lever are nested and stacked together from bottom to top. A protruding buffer block is provided on the side wall of the other end, and the protruding body A is clamped in the concave groove A. A centrifuge with a concave groove and a special-shaped lever with a protruding body can also be provided, and the protruding body of the special-shaped lever Enter the sunken groove of the centrifuge. The special-shaped lever will rotate under the action of the centrifugal force and the size change of the extension spring, and the forward and reverse rotation of the special-shaped lever can form "top" and "press" on the centrifugal body.

In the aforementioned lever centrifugal clutch, a buffer washer is sheathed on the positioning post.

In the lever centrifugal clutch described above, the centrifugal body is a meniscus mechanism, and a concave groove B is provided in the middle of the centrifugal body, and a protruding body B matching the concave groove B is provided on the special-shaped lever, and the protruding The body B is fixed in the concave groove B, and the protruding body B of the special-shaped lever is in contact with the concave groove B of the centrifugal body. ".

In the aforementioned lever centrifugal clutch, the driving disc is provided with a power connection mechanism or the driving disc is provided with a driving wheel or a power shaft. Among them, the power connection mechanism is provided with a flat key sleeve, or a spline sleeve, or an inner gear sleeve at the center of the driving disc, and the power source is connected by a flat key sleeve, or a spline sleeve, or an inner gear sleeve; or in the center of the driving disc. The part is provided with a power shaft, which is connected to the power source.

Embodiments of the present invention:

A kind of lever centrifugal clutch shown in Figure 1-Figure 7 is provided with two or more positioning columns on the disk surface of the driving disc 1, and the roots of the positioning columns 4 are all provided with steps, one set One end of the centrifuge body 2 of the centrifugal mechanism is movably socketed on the positioning column 4, and the other movable end of the centrifuge body 2 is provided with a protruding body A201 near the middle; the special-shaped lever 3 is provided with a corresponding depression Groove A301, the protruding body A201 enters the inside of the recessed groove A301 of the special-shaped lever 3 . One end of the special-shaped lever 3 of the adjacent group of centrifugal mechanisms is movably socketed on the positioning column 4 and located on the centrifugal body 2. When the centrifugal force of the special-shaped lever 3 is greater than the tension of the tension spring 5, it passes through the side wall of the concave groove of the special-shaped lever 3. "Top" the protruding body A201 of centrifugal body 2, when the centrifugal force of special-shaped lever 3 was less than the pulling force of extension spring 5, just " press " the protruding body A201 of centrifugal body 2 by the concave groove side wall of special-shaped lever 3; 3 As the centrifugal force changes, it will slide relative to the positioning column 4. A protruding buffer block 6 is provided on one end side wall of the centrifuge body 2, and a buffer washer 7 can also be installed on the positioning column 4. When When the special-shaped lever 3 returns to its position, the buffer block 6 is in contact with the positioning column 4, or the special-shaped lever 3 is in contact with the buffer washer 7, which prevents the special-shaped lever 3 from colliding with the positioning column 4 during the reciprocating movement, thereby achieving the shockproof effect and reducing the noise, but also prolong the service life of the clutch. In the structural combination of the centrifugal body 2 and the special-shaped lever 3 with a concave groove and a protruding body, the anti-vibration washer installed on the protruding body or in the concave groove also has the same effect. Function, maximally reduce wear and noise, prolong service life. The special-shaped lever 3 is provided with a gap at one end of the movable sleeve positioning column 4, and a hole is provided on the protruding part of the other end. On one set of positioning posts 4, the two ends of the special-shaped lever 3 may also be provided with clamping holes, and the two ends of the tension spring 5 are respectively hung on the clamping holes where the two heterosexual levers 3 are connected end to end, and the centrifugal body 2 The inner side is pressed on the outer wall of the power sleeve of the driving disc; the driven disc 8 is buckled on the outer edge of the centrifugal body 2, and the driven disc 8 is provided with a power output mechanism, which is a tooth column.

When in use, the drive plate 1 receives the rotational kinetic energy, and the drive plate 1 transmits the rotational kinetic energy to the centrifugal body 2 and the special-shaped lever 3. When the set speed (starting) is reached, the resultant centrifugal force of the centrifugal body 2 and the special-shaped lever 3 is greater than the tension spring 5, the centrifugal force forces the special-shaped lever 3 to rotate outward, so that the outer surface of the centrifugal body 2 is combined with the driven disk 8, and drives the driven disk 8 to rotate; when the speed continues to increase, the centrifugal force of the special-shaped lever 3 is greater than the tension of the extension spring 5 , the special-shaped lever 3 pushes against the outer surface of the protruding body A201 of the centrifugal body 2 through the inner surface of the concave groove A301, which increases the external throwing force of the centrifugal body 2. Since the centrifugal body 2 is tightly combined with the driven disk 8, the (power) torque transmitted between the centrifugal body 2 and the driven disk 8 increases; when the driving disk 1 is lower than the set speed (or starting speed), the centrifugal The resultant centrifugal force of the body 2 and the special-shaped lever 3 is less than the tension of the extension spring 5, and the extension spring 5 forces the special-shaped lever 3 to return, and the inner side of the concave groove A301 on the special-shaped lever 3 presses the protruding body A201 on the centrifugal body 2, forcing the centrifugal The body 2 is pressed against the outer wall of the power connection provided on the driving disk, the centrifugal body 2 is disengaged from the driven disk 8, and the torque transmission is disconnected. During this use, the centrifuge 2 will collide with the positioning column 4 when it moves back and forth, and a buffer washer 7 is set on the positioning column 4, or a buffer block is provided at the end of the centrifuge 2 in contact with the positioning column 4 6. Such structural design avoids the vibration caused when the centrifuge body 2 is in contact with the positioning column 4, reduces noise, and improves the service life of the clutch.

In the above-mentioned embodiment, a special-shaped lever 3 with a protruding body B302 and a centrifuge body 2 with a concave groove B202 may also be provided, and the protruding body B302 of the special-shaped lever 3 enters the concave groove B202 of the centrifuge body 2 . Under the condition that other structures remain unchanged, the same effect can also be achieved.

The part of the invention not described in detail is the prior art.

Claims (7)

1. a kind of lever centrifugal clutch, including driving disc spacing pressing（1）, at least two groups centrifugal mechanisms and clutch plate（8）, driving disc spacing pressing company Connect external power supply, clutch plate（8）Centrifugal mechanism edge is buckled in, in clutch plate（8）Power take-off mechanism is provided with, its feature exists In：The centrifugal mechanism includes centrifugation body（2）, special-shaped lever（3）And extension spring（5）, and every group of centrifugal mechanism is designed with one calmly Position post（4）, the locating dowel（4）From bottom to up successively movable sleeve is provided with the centrifugation body of one group of centrifugal mechanism（2）One end and adjacent The special-shaped lever of centrifugal mechanism（3）One end, realizes that two adjacent groups centrifugal mechanism is end to end, the adjacent special-shaped lever（3） Between be provided with and make special-shaped lever（3）The extension spring of reset（5）, special-shaped lever（3）By the fit system of groove and projection and centrifugation Body（2）Overlap clamping and to body is centrifuged（2）Force.

2. a kind of lever centrifugal clutch according to claim 1, it is characterised in that：The centrifugation body（2）For bent moon Shape structure, in special-shaped lever（3）Middle part is provided with female, and body is centrifuged（2）A part is fastened in female.

3. a kind of lever centrifugal clutch according to claim 1, it is characterised in that：The centrifugation body（2）For bent moon Shape structure, in centrifugation body（2）Middle part is provided with female, special-shaped lever（3）A part be fastened in female.

4. a kind of lever centrifugal clutch according to claim 2, it is characterised in that：The centrifugation body（2）For bent moon Shape mechanism, in centrifugation body（2）Middle part is provided with bossy body A（201）, in special-shaped lever（3）It is provided with and bossy body A（201）Phase The recessed groove A for matching somebody with somebody（301）, bossy body A（201）It is fastened on recessed groove A（301）It is interior.

5. a kind of lever centrifugal clutch according to claim 3, it is characterised in that：The centrifugation body（2）For bent moon Shape mechanism, in centrifugation body（2）Middle part is provided with recessed groove B（202）, in special-shaped lever（3）It is provided with and recessed groove B（202）Phase The bossy body B for matching somebody with somebody（302）, bossy body B（302）It is fastened on recessed groove B（202）It is interior.

6. a kind of lever centrifugal clutch according to claim 4, it is characterised in that：Described bossy body A（201）Or Recessed groove A（301）It is provided with earthquake washer.

7. a kind of lever centrifugal clutch according to claim 5, it is characterised in that：Described bossy body B（302）Or Recessed groove B（202）It is provided with earthquake washer.