CN207814268U - A kind of centrifugal clutch - Google Patents
A kind of centrifugal clutch Download PDFInfo
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- CN207814268U CN207814268U CN201820070568.4U CN201820070568U CN207814268U CN 207814268 U CN207814268 U CN 207814268U CN 201820070568 U CN201820070568 U CN 201820070568U CN 207814268 U CN207814268 U CN 207814268U
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- driving link
- centrifugation
- centrifugation body
- driven member
- centrifugal clutch
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Abstract
A kind of centrifugal clutch, including driving link and centrifugation body, it is equipped with centrifugation body on the outside of driving link, centrifugation body forms a full circle for encircling driving link and there is slight clearance between each other, centrifugation body setting can slide up and down between each other outside driving link, centrifugation body combination rear end face is provided with both sides setting arc groove, and arc groove is end to end to form complete annular groove, and annular tension spring is arranged in annular groove；The external setting tubular driven member of centrifugation, there are appropriate gaps between radial direction and driven member for centrifugation body；Driving link is felt relieved and is rotated coaxially with driven member, when the centrifugal force that driving link rotates and make centrifugation body to generate is more than the restraining force of annular tension spring, centrifugation body is contacted with driven member transmits torque, since annular tension spring is not take up circuferential spacing, centrifugation weight is relatively large, and the centrifugal force of generation is also bigger, to improve the nominal torque of centrifugal clutch, simple with manufacturing process, transmission torque is big, performance is stable, feature with long service life.
Description
Technical field
The utility model is related to Clutch Technology field, more particularly to a kind of centrifugal clutch.
Background technology
Centrifugal clutch is that a kind of centrifugal force generated by centrifugation body reaches the clutch for being automatically separated or engaging,
Typically it is made of driving link, centrifugation body, driven member, spring etc..When driving link does not rotate or rotating speed is relatively low, centrifugation body is by bullet
Spring constrains close driving link and there are gaps, driving link to drive Passive part to rotate between Passive part.When driving link rotating speed
Increase, driving link drives centrifugation body to rotate together and generate centrifugal force, and centrifugation body connects with driven member surface under the action of the centrifugal force
Frictional force is touched and generates, at this point, centrifugation body connection driving link rotates together with driven member and can transmit certain torque.
Centrifugal clutch is generally as soft starting device for coupling engine and working machine.It can be with by centrifugal force formula
Show that centrifugal clutch output torque is increased with the increase of rotating speed, it is upper with engine speed in start-up course
It rises, power is applied to working machine in a manner of cumulative, thus can obtain and smoothly start effect.When working machine load be more than from
When output torque of the centrifugal clutch under the working speed, centrifugation body just skids with driven member, and power transmits interruption, plays safety
Protective effect.Thus it is widely used in Environmental sanitation cleaning vehicle, large blower, centrifuge, air compressor etc. needs smooth starting
Occasion.
Centrifugal clutch is by centrifugation body structure point：Brake shoe formula, steel-ball type, steel sand formula, most common structure are brake shoe formulas.Lock
Block formula is divided into according to spring shape as helical spring structure and piece spring structure, and helical spring structure can also be further divided into compression spring knot
Structure and extension spring structure, the utility model are directed to most common tension spring brake shoe formula centrifugal clutch.
Existing tension spring brake shoe formula centrifugal clutch centrifuges body and tension spring and distributes alternately on a circumference, spring be hooked on from
On heart body.This structure has following defect：1, centrifuge body between need to there are sufficient space place tension spring, therefore centrifuge body design by
Limit, under conditions of appearance and size is certain, the torque that can be transmitted is smaller, in order to meet large torque operating mode, this structure from
Clutch can only do shape greatly, cause processing cost to increase and install inconvenience；2, general spring quantity is more, hangs spring inconvenience,
Spring force adjustment can not be accomplished consistent, and each centrifugation body is caused to contact and can not synchronize with driven member, centrifuge body wear it is unbalanced, influence from
Clutch service life；3, in order to which centrifugation body is given in spacing as far as possible, the tension spring number of turns is often less, and relative deformation is big when work,
Spring force decaying is fast, and causing centrifugal clutch combination rotating speed, (centrifugation body overcomes spring constraining force to start to turn with when driven member contact
Speed) it reduces, engine just drives working machine rotation without starting completely, is damaged to engine.
Invention content
In order to overcome the above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of centrifugal clutch, tools
Have that manufacturing process is simple, transmits that torque is big, performance is stable, feature with long service life.
To achieve the goals above, the technical solution adopted in the utility model is：
A kind of centrifugal clutch, including driving link 1 and centrifugation body 2, centrifugation body 2 are equipped in 1 outside of driving link, mutually
Between can slide up and down, the centrifugation body 2 has multiple, forms a cylinder for encircling driving link 1, and adjacent centrifugal body 2 is deposited
In slight clearance, the centrifugation body 2 combines rear end face both sides and arc groove is arranged, and arc groove is end to end to form complete ring
Annular tension spring 4 is arranged in annular groove for slot；Tubular driven member 3 is set outside the centrifugation body 2, and centrifugation body 2 is in radial direction and driven member 3
Between there are appropriate gaps；
The driving link 1 is felt relieved and is rotated coaxially with driven member 3.
The driving link 1 is hollow shaft, and keyway or internal spline is arranged in endoporus.
1 outside of driving link is provided with boss 8, centrifuges and is arranged fluted 9 on body 2, boss 8 is matched with groove 9
It is nested.
11 axial limiting of baffle is arranged in 1 both sides of driving link.
The groove 9 is arranged symmetrically along centrifugation body 2.
The arc groove is provided with 1~3 annular tension spring 4 per side, annular tension spring 4 it is end to end by spiral tension spring and
At.
The natural internal diameter of the annular tension spring 4 is less than annular groove internal diameter.
The driven member 3 is belt pulley, sprocket wheel or gear.
1 both ends of driving link are arranged bearing 6, and bearing 6 supports end cap 5, at 5 outer circle of end cap by seam allowance position with from
3 end face of moving part is connected using fastener.
The driving link 1 is mounted on engine output shaft, and driven member 3 is mounted on working machine input shaft.
The arc groove internal diameter seamed edge of the centrifugation body 2 sets protrusion 10, slightly above arc groove internal diameter.
The centrifugation body 2 is sector.
2 outer circle of centrifugation body, which is covered, friction material 7.
The beneficial effects of the utility model：
1, since annular tension spring is not take up circuferential spacing, centrifugation body can form a full circle with solid matter in circumference, centrifuge body
The centrifugal force of the big generation of quality is big, and clutch output torque is big；2, annular tension spring makes each centrifuge body uniform force, centrifuges body
Even wearing；3, annular tension spring number of active coils is more, and work relative deformation is small, spring force decaying unobvious, and clutch combination rotating speed is steady
It is fixed, it in addition assembles also fairly simple.
Description of the drawings
Fig. 1 is the main sectional view of the utility model specific embodiment one.
Fig. 2 is the left sectional view of the utility model specific embodiment one.
Fig. 3 is the main sectional view of the utility model specific embodiment two.
Fig. 4 is the left view of the utility model specific embodiment two.
Fig. 5 is the portions the A enlarged drawing of the utility model specific embodiment one, two annular groove seamed edges.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1：Driving link 1 is hollow shaft, and endoporus is arranged keyway or internal spline, several are evenly arranged in outer circle
Boss/groove, the corresponding each boss/groove in outer circle outside are arranged the centrifugation body 2 of several sectors, are only stayed between centrifugation body 2 micro
Gap, all centrifugation bodies 2 form a full circle for encircling driving link 1.Fluted/boss is set on centrifugation 2 internal diameter of body, it is recessed
Slot/boss is just nested on 1 boss of driving link/groove, and can be slided up and down, by this concave-convex nested driving link 1 with from
Heart body 2 can rotate together.In order to balance, groove/boss should be along the center symmetric setting of centrifugation body 2.Centrifuge 2 both sides of the face of body
It is symmetrical arranged arc groove, all centrifugation bodies 2 combine the end to end complete annular groove of formation of the arc groove on rear end face, set in annular groove
Annular tension spring 4 is set, can be arranged 1~3 per side.Annular tension spring 4 is formed using a spiral tension spring is end to end, natural internal diameter
It less than annular groove internal diameter, needs to be loaded into annular groove by expansion tool, driving link 1 is pressed on to generate enclasping force by body is centrifuged
On.The setting tubular driven member 3 outside centrifugation body 2, driven member 3 accommodate centrifugation body 2, and centrifugation body 2 is between radial direction and driven member 3
It is reserved with appropriate gap, the driven member 3 can be the driving members such as belt pulley, sprocket wheel, gear, and screw hole is arranged in end face.
When work, driving link 1 drives centrifugation body 2 to rotate, and the centrifugal force that body 2 generates is centrifuged when rotating speed is relatively low and is less than annular
The restraining force of tension spring 4, centrifugation body 2 are not contacted with driven member 3, and driven member 3 does not rotate；When the increase of 1 rotating speed of driving link, body 2 is centrifuged
The centrifugal force of generation overcomes the restraining force of annular tension spring 4, centrifugation radially outer 3 endoporus of Zhang Bingyu driven members of body 2 closely to connect enough
It touches, centrifuges body 2 at this time and still kept with the concave-convex nest relation on driving link 3, to drive driven member 3 to rotate together；Work as master
1 rotating speed of moving part declines, and centrifugal force is less than the restraining force of annular tension spring 4, and centrifugation body 2 leaves driven member and compresses driving link again, main
Moving part 1 is disengaged with 3 power of driven member.There are two types of centering modes to ensure to rotate coaxially with driven member 3 for driving link 1, to keep centrifuging
Radial clearance uniformity between body 2 and driven member 3, a kind of mode are that bearing 6 is arranged at 1 both ends of driving link, and bearing 6 supports end cap
5, it is positioned by seam allowance at 5 outer circle of end cap and is connect using fastener with 3 end face of driven member；Another kind is that driving link 1 is mounted on hair
Motivation output shaft, driven member 3 are mounted on working machine input shaft, by adjusting engine output shaft and working machine input shaft when installation
Ensuring coaxiality.
Referring to Fig.1, Fig. 2, Fig. 5 apply example one to the utility model and elaborate：
The utility model as shown in Figure 1 by：Driving link 1, centrifugation body 2, driven member 3, annular tension spring 4, end cap 5, bearing 6,
Bolt 7 forms.
Driving link 1 as shown in Figure 2 is hollow shaft, and endoporus is arranged keyway or internal spline, 2~6 are evenly arranged in outer circle
A boss 8 (is illustrated as 4), and the centrifugation body 2 equal with boss quantity, the centrifugation body 2 is arranged in the outside of 1 outer circle of driving link
For sector, inner radius is equipped with groove 9, and groove 9 can be just inserted on the boss 8 of driving link 1, and groove 9 is slidably matched with boss 8
Guiding and connection function are formed, ensures that centrifugation body 2 can be slided radially, and can be rotated together with driving link 1.
2 outer circle of centrifugation body, which is covered, friction material 7, and to increase friction coefficient, the mode that friction material covers can be with
It is direct sintering, bonding, can also be riveting or screw fastening.Centrifugation body 2 only stays slight clearance between each other in circumferencial direction,
Under the premise of ensureing that centrifugation body 2 can be moved freely radially, the design as big as possible of centrifugation 2 mass of body.
The both sides of the face of the centrifugation body 2 are equipped with arc groove, after centrifugation body 2 is assembled on driving link 1, each section of arc groove group
A complete annular groove is synthesized, annular tension spring 4 is set in annular groove, annular tension spring 4 is connected by spiral tension spring first place, natural shape
Its internal diameter is less than annular groove internal diameter under state, and after being loaded into annular groove by expansion tool, the restraining force held tightly is formed to centrifugation body 2,
Centrifugation body 2 is pressed on driving link 1.
As shown in Figure 1, annular tension spring 4 is symmetricly set in centrifugation 2 both sides of the face annular groove of body, centrifugation body 2 is uniformly forced in
On.In light of the circumstances, 1~3 annular tension spring 4 (being illustrated as 1) can be arranged in unilateral slot.
As shown in figure 5, the arc groove internal diameter seamed edge of the centrifugation body 2 sets protrusion 10, slightly above arc groove internal diameter, ring is prevented
Shape tension spring 4 is deviate from.
As shown in Figure 1, bearing 6 is respectively set in 1 both ends of driving link, 6 outer ring of bearing is equipped with end cap 5, and 5 outer circle portion of end cap is symmetrical
Seam allowance and connecting hole are set, and in axial direction, there are appropriate gap b with centrifugation body 2 for end cap 5, and guarantee centrifugation body 2 therebetween can be free
It rotates and moves radially.
As shown in Figure 1, the driven member 3 is cylindrical shape, end face sets threaded hole, can be the biographies such as belt pulley, sprocket wheel, gear
Moving part is arranged between two pieces end cap 5, and endoporus matches to merge with 5 seam allowance of end cap to be bolted, and driven member 3 accommodates centrifugation
Body 2, there are appropriate radial clearance δ between 3 endoporus of driven member and centrifugation 2 outer diameter of body.
As shown in Fig. 2, the boss 8 on groove 9 and driving link 1 on centrifugation body 2 coordinates depth h, be greater than centrifugation body 2 with
Gap delta between driven member 3, when ensureing work, centrifugation 2 outer circle of body is contacted with 3 endoporus of driven member and groove 9 thereon is embedding always
It is sleeved on the boss 8 of driving link 1, ensures that the two rotates together.
Operation principle is：Driving link 1 is generally mounted on the output shaft of engine (such as motor, internal combustion engine), and is started
Machine rotates together, and driven member 3 is connect with working machine.When engine does not work, centrifugation body 2 is not contacted with driven member 3, driven member 3
Opposite driving link 1 can be freely rotated.It drives driving link 1 to rotate after engine start, centrifugation body 2 thereon will be driven together
Rotation, centrifugation body 2 overcome the restraining force of annular tension spring 4, have the trend moved to driven member 3 under the action of the centrifugal force.Work as hair
When motivation rotating speed is relatively low, the centrifugal force that centrifugation body 2 generates is less than the restraining force of annular tension spring 4, and centrifugation body 2 is still hugged in actively
On part 1, centrifugation body 2 is not contacted with driven member 3, and driven member 3 does not rotate, startup that engine is non-loaded；When engine speed increase,
The restraining force that the centrifugal force that body 2 generates is more than annular tension spring 4 is centrifuged, centrifugation body 2 is flared out closely to be connect with 3 internal diameter of driven member
It touches, and generates frictional force and driven member 3 is driven to rotate together, centrifugal clutch output torque, working machine work.Engine speed
Higher, the centrifugal force that centrifugation body 2 generates is bigger, and the torque that centrifugal clutch transmits is also bigger, is turned round since centrifugal clutch exports
Square is gradually increased with rotating speed increase, is avoided to start to generate between moment engine and working machine and be impacted.Work as working machine
Load be more than the rotating speed under centrifugal clutch peak torque when, centrifugation body 2 can skid with driven member 3, to engine with
Working machine plays safeguard protection.
Example two is applied with reference to Fig. 3, Fig. 4, Fig. 5 to the utility model to elaborate：
As shown in figure 3, the utility model by：Driving link 1, centrifugation body 2, driven member 3, annular tension spring 4, baffle 11 form.
As shown in figure 3, driving link 1 is hollow shaft, keyway or internal spline is arranged in endoporus, and 2~6 are evenly arranged in outer circle
A groove 9 (is illustrated as 3), and 1 outer circle of driving link is wrapped in the centrifugation body 2 equal with number of recesses on outside, centrifuges 2 internal diameter of body
Place is equipped with boss 8, and boss 8 is just inserted on the groove 9 of driving link 1, and groove 9 is slidably matched to form guiding and connect with boss 8
Effect ensures that centrifugation body 2 can be slided radially, and can be rotated together with driving link 1.
2 outer circle of centrifugation body, which is covered, friction material 7, and to increase friction coefficient, the mode that friction material covers can be with
It is direct sintering, bonding, can also be riveting or screw fastening.Centrifugation body 2 only stays slight clearance between each other in circumferencial direction,
Under the premise of ensureing that centrifugation body 2 can be moved freely radially, the design as big as possible of centrifugation 2 mass of body.
The both sides of the face of the centrifugation body 2 are equipped with arc groove, after centrifugation body 2 is assembled on driving link 1, each section of arc groove group
A complete annular groove is synthesized, annular tension spring 4 is set in annular groove, annular tension spring 4 is connected by spiral tension spring first place, natural shape
Its internal diameter is less than annular groove internal diameter under state, and after being loaded into annular groove by expansion tool, the restraining force held tightly is formed to centrifugation body 2,
Centrifugation body 2 is pressed on driving link 1.
As shown in figure 3, annular tension spring 4 is symmetricly set in centrifugation 2 both sides of the face annular groove of body, centrifugation body 2 is uniformly forced in
On.In light of the circumstances, 1~3 annular tension spring 4 (being illustrated as 2) can be arranged in unilateral slot.
As shown in figure 5, the arc groove internal diameter seamed edge of the centrifugation body 2 sets protrusion 10, slightly above arc groove internal diameter, ring is prevented
Shape tension spring 4 is deviate from.
As shown in figure 3, driven member 3 is arranged outside centrifugation body 2, driven member 3 accommodates centrifugation body 2, and is stayed between its outer diameter
It can be the driving members such as belt pulley, sprocket wheel, gear to have gap delta, the driven member 3.
As shown in figure 3,5 axial limiting of baffle is arranged in 1 both sides of driving link, there is no the supporting members such as bearing between driven member 3,
In use, being separately mounted in respective equipment, ensure its concentricity and mutual alignment by adjusting equipment.
As shown in figure 4, the groove 9 on boss 8 and driving link 1 on centrifugation body 2 coordinate depth h be greater than centrifugation body 2 with
Gap delta between driven member 3, when ensureing work, the boss 8 centrifuged on body 2 is inserted into the groove 9 of driving link 1 always, ensures two
Person rotates together.
Operation principle：
Driving link 1 is generally mounted on the output shaft of engine (such as motor, internal combustion engine), is rotated together with engine,
Driven member 3 is connect with working machine.When engine does not work, centrifugation body 2 is not contacted with driven member 3, and driven member 3 is with respect to driving link 1
It can be freely rotated.It drives driving link 1 to rotate after engine start, centrifugation body 2 thereon will be driven to rotate together, centrifuge body
2 overcome the restraining force of annular tension spring 4 under the action of the centrifugal force, have the trend moved to driven member 3.When engine speed is relatively low
When, the centrifugal force that centrifugation body 2 generates is less than the restraining force of annular tension spring 4, and centrifugation body 2 is still hugged on driving link 1, centrifuges body
2 do not contact with driven member 3, and driven member 3 does not rotate, startup that engine is non-loaded；When engine speed increases, centrifugation body 2 generates
Centrifugal force be more than the restraining force of annular tension spring 4, centrifugation body 2 is flared out to be in close contact with 3 internal diameter of driven member, and generates friction
Power drives driven member 3 to rotate together, centrifugal clutch output torque, working machine work.Higher, the centrifugation body 2 of engine speed
The centrifugal force of generation is bigger, and the torque that centrifugal clutch transmits is also bigger, since centrifugal clutch output torque is with rotating speed
What increase gradually increased, it avoids to start to generate between moment engine and working machine and impact.When working machine load is more than this turn
When the peak torque of the lower centrifugal clutch of speed, centrifugation body 2 can skid with driven member 3, and safety is played to engine and working machine
Protective effect.
Compared to traditional structure, improved annular tension spring brake shoe formula centrifugal clutch torque bigger, performance is more stable, uses
Longer life expectancy, assembly are simpler, suitable for mass production.
Claims (10)
1. a kind of centrifugal clutch, which is characterized in that including driving link (1) and centrifugation body (2), centrifugation body (2) is equipped with
It on the outside of driving link (1), can slide up and down between each other, the centrifugation body (2) has multiple, and driving link (1) is encircled in formation one
Cylinder, and there are slight clearance between adjacent centrifugal body (2), the centrifugation body (2) combines rear end face both sides and arc groove is arranged,
Arc groove is end to end to form complete annular groove, and annular tension spring (4) is arranged in annular groove；Tubular is arranged in the centrifugation body (2) outside
Driven member (3), there are appropriate gaps between radial direction and driven member (3) for centrifugation body (2)；
The driving link (1) is felt relieved and is rotated coaxially with driven member (3).
2. a kind of centrifugal clutch according to claim 1, which is characterized in that the driving link (1) is hollow shaft, interior
Keyway or internal spline is arranged in hole.
3. a kind of centrifugal clutch according to claim 1, which is characterized in that be provided on the outside of the driving link (1)
Boss (8) is arranged fluted (9) in centrifugation body (2), and boss (8) matches nesting with groove (9), the groove (9) edge from
Heart body (2) is arranged symmetrically.
4. a kind of centrifugal clutch according to claim 1, which is characterized in that driving link (1) both sides setting gear
Plate (11) axial limiting.
5. a kind of centrifugal clutch according to claim 1, which is characterized in that the arc groove is provided with 1~3 per side
Root annular tension spring (4), it is end to end by spiral tension spring between annular tension spring (4).
6. a kind of centrifugal clutch according to claim 1, which is characterized in that the natural internal diameter of the annular tension spring (4)
Less than annular groove internal diameter.
7. a kind of centrifugal clutch according to claim 1, which is characterized in that the driven member (3) is belt pulley, sprocket wheel
Or gear.
8. a kind of centrifugal clutch according to claim 1, which is characterized in that axis is arranged in described driving link (1) both ends
It holds (6), bearing (6) supports end cap (5), is connected using fastener with driven member (3) end face by seam allowance positioning at end cap (5) outer circle
It connects.
9. a kind of centrifugal clutch according to claim 1, which is characterized in that the driving link (1), which is mounted on, to be started
Machine output shaft, driven member (3) are mounted on working machine input shaft.
10. a kind of centrifugal clutch according to claim 1, which is characterized in that the arc groove internal diameter of the centrifugation body (2)
Seamed edge sets protrusion (10), is higher than arc groove internal diameter, and the centrifugation body (2) is fan-shaped, and cover the centrifugation body (2) have friction by outer circle
Material (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820070568.4U CN207814268U (en) | 2018-01-16 | 2018-01-16 | A kind of centrifugal clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820070568.4U CN207814268U (en) | 2018-01-16 | 2018-01-16 | A kind of centrifugal clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207814268U true CN207814268U (en) | 2018-09-04 |
Family
ID=63327443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820070568.4U Active CN207814268U (en) | 2018-01-16 | 2018-01-16 | A kind of centrifugal clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207814268U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343687A (en) * | 2018-01-16 | 2018-07-31 | 咸阳超越离合器有限公司 | A kind of brake shoe formula centrifugal clutch |
| CN110122049A (en) * | 2019-05-10 | 2019-08-16 | 淮安中绿园林机械制造有限公司 | A kind of lawn trimmer |
| CN110185720A (en) * | 2019-05-28 | 2019-08-30 | 厦门南超机械有限公司 | A kind of centrifugal clutch |
-
2018
- 2018-01-16 CN CN201820070568.4U patent/CN207814268U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343687A (en) * | 2018-01-16 | 2018-07-31 | 咸阳超越离合器有限公司 | A kind of brake shoe formula centrifugal clutch |
| CN110122049A (en) * | 2019-05-10 | 2019-08-16 | 淮安中绿园林机械制造有限公司 | A kind of lawn trimmer |
| CN110185720A (en) * | 2019-05-28 | 2019-08-30 | 厦门南超机械有限公司 | A kind of centrifugal clutch |
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