CN211874981U - Friction clutch - Google Patents
Friction clutch Download PDFInfo
- Publication number
- CN211874981U CN211874981U CN202020273093.6U CN202020273093U CN211874981U CN 211874981 U CN211874981 U CN 211874981U CN 202020273093 U CN202020273093 U CN 202020273093U CN 211874981 U CN211874981 U CN 211874981U
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- output shaft
- friction
- output
- output gear
- connecting shaft
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- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The utility model discloses a friction clutch, including the output shaft, the connecting axle sleeve, the output gear, the holder, the friction disc, dish spring and pressure adjusting nut, the connecting axle sleeve is located on the output shaft and both link firmly, be provided with external screw thread and spacing protruding edge on the surface of connecting axle sleeve, a side of output gear is spacing by spacing protruding edge, be provided with the stationary blade on the another side, be provided with a plurality of recesses on the stationary blade, it is equipped with a plurality of steel balls to inlay on the holder, the steel ball is corresponding with the recess one-to-one, pressure adjusting nut and connecting axle sleeve screw-thread fit compress dish spring, and then make friction disc roof pressure steel ball get into in the recess, when the load of output shaft is not more than the rated load of clutch, steel ball and friction disc stiction contact, output; when the load of the output shaft is greater than the rated load of the clutch, the steel balls are in dynamic friction contact with the friction plate, and the transmission of the output shaft and the output gear fails.
Description
Technical Field
The utility model relates to a friction clutch is applicable to motor and speed reducer.
Background
The clutch is used as a device for separating the electric mechanism from the load mechanism, and is mainly used for separating the motor driving mechanism from the load mechanism. The existing motor reducer has the following defects: 1) when the motor is improperly used and the load possibly far exceeds the rated load, the motor can be blocked, and the performance of the motor can be reduced or the motor can be burnt down due to long-time blocking; 2) when operating improperly, the motor operates at a much greater than rated torque, possibly damaging the operating mechanism that is matched to it, causing unnecessary losses. Therefore, a clutch device capable of timely controlling the separation of the driving mechanism and the loading mechanism is needed.
SUMMERY OF THE UTILITY MODEL
Based on above, the utility model provides a friction clutch solves the shortcoming of current speed reducer, improves gear motor's fail safe nature.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a friction clutch comprises an output shaft, a connecting shaft sleeve, an output gear, a retainer, a friction plate, a disc spring and a pressure adjusting nut, wherein the connecting shaft sleeve is sleeved on the output shaft and fixedly connected with the output shaft, the outer surface of the connecting shaft sleeve is provided with an external thread and a limiting convex edge, the output gear, the retainer, the friction plate, the disc spring and the pressure adjusting nut are sequentially sleeved on the connecting shaft sleeve, one side surface of the output gear is limited by the limiting convex edge, the other side surface of the output gear is provided with a fixing plate, the fixing plate is provided with a plurality of grooves, the retainer is embedded with a plurality of steel balls, the steel balls correspond to the grooves one to one, the pressure adjusting nut is in, the friction plate is pressed against the steel balls to enter the grooves, when the load of the output shaft is not greater than the rated load of the clutch, the steel balls are in static friction contact with the friction plate, and the output shaft is in transmission connection with the output gear; when the load of the output shaft is greater than the rated load of the clutch, the steel balls are in dynamic friction contact with the friction plate, and the transmission of the output shaft and the output gear fails.
Wherein, a stop washer is arranged between the pressure adjusting nut and the disc spring.
Wherein, the output gear is provided with a concave cavity, and the fixing piece is embedded into the concave cavity in an interference manner.
Wherein, the connecting shaft sleeve is connected between the output shafts through key transmission.
Wherein, be provided with spacing step on the output shaft, the one end of connecting the axle sleeve is spacing by spacing step, and the other end passes through the jump ring locking.
Wherein, the dish spring is provided with a plurality ofly, and a plurality of dish springs are used in series connection and/or parallelly connected combination.
To sum up, the beneficial effects of the utility model are that, compare with prior art, friction clutch sets for the static friction threshold value of steel ball and friction disc through the effort of control dish spring to the friction disc, confirms the rated load value of clutch promptly, realizes when output shaft load is too big, control power unit and load mechanism autosegregation to prevent that the motor from stalling, prevent to damage the mechanism when the load is too big, improve gear motor's fail safe nature.
Drawings
Fig. 1 is a schematic structural diagram of a friction clutch according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a friction clutch according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
Referring to fig. 1 and 2, the present embodiment provides a friction clutch, which includes an output shaft 1, a connecting sleeve 2, an output gear 3, a retainer 4, a friction plate 5, a disc spring 6 and a pressure adjusting nut 7.
The connecting shaft sleeve 2 is sleeved on the output shaft 1 and fixedly connected with the output shaft 1, an external thread 8 and a limiting convex edge 9 are arranged on the outer surface of the connecting shaft sleeve 2, specifically, the connecting shaft sleeve 2 is in transmission connection between the output shaft 1 through a key 10, a limiting step 11 is arranged on the output shaft 1, one end of the connecting shaft sleeve 2 is limited by the limiting step 11, and the other end of the connecting shaft sleeve is locked through a clamp spring 12.
One side surface of the output gear 3 is limited by the limiting convex edge 9, the other side surface is provided with a fixing sheet 13, the fixing sheet 13 is provided with a plurality of grooves 14, the retainer 4 is embedded with a plurality of steel balls 15, and the steel balls 15 correspond to the grooves 14 one by one. Specifically, a concave cavity 16 is formed in the output gear 3, and the fixing piece 13 is embedded into the concave cavity 16 in an interference manner.
During assembly, the output gear 3, the retainer 4, the friction plate 5, the disc spring 6 and the pressure adjusting nut 7 are sequentially sleeved on the connecting shaft sleeve 2, the pressure adjusting nut 7 is in threaded fit with the connecting shaft sleeve 2, a stop gasket 17 is arranged between the pressure adjusting nut 7 and the disc spring 6, and the pressure adjusting nut 7 is rotated to compress the disc spring 6, so that the friction plate 5 pushes the steel balls 15 into the groove 14.
When the load of the output shaft 1 is not more than the rated load of the clutch, the steel balls 15 are in static friction contact with the friction plate 5, and the output shaft 1 is in transmission connection with the output gear 3;
when the load of the output shaft 1 is larger than the rated load of the clutch, the steel balls 15 are in dynamic friction contact with the friction plate 5, and the transmission of the output shaft 1 and the output gear 3 fails.
Wherein, dish spring 6 is provided with a plurality ofly, and a plurality of dish springs are established ties and/or parallelly connected combination uses to satisfy different dish spring elastic force value requirements.
Therefore, the rated load value of the clutch can be adjusted by rotating the pressure adjusting nut 7, increasing the number of the disc springs 6, changing the laminating manner of the disc springs 6 and the like.
In summary, the friction clutch sets the static friction threshold of the steel balls and the friction plates by controlling the acting force of the disc spring on the friction plates, namely, the rated load value of the clutch is determined, and the power mechanism and the load mechanism are controlled to be automatically separated when the output shaft is overloaded, so that the motor is prevented from stalling, the mechanism is prevented from being damaged when the load is overloaded, and the safety and reliability of the speed reducing motor are improved.
The above embodiments have been merely illustrative of the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and does not depart from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A friction clutch is characterized by comprising an output shaft, a connecting shaft sleeve, an output gear, a retainer, a friction plate, a disc spring and a pressure adjusting nut, wherein the connecting shaft sleeve is sleeved on the output shaft and fixedly connected with the output shaft, the outer surface of the connecting shaft sleeve is provided with an external thread and a limiting convex edge, the output gear, the retainer, the friction plate, the disc spring and the pressure adjusting nut are sequentially sleeved on the connecting shaft sleeve, one side surface of the output gear is limited by the limiting convex edge, the other side surface of the output gear is provided with a fixing plate, the fixing plate is provided with a plurality of grooves, the retainer is embedded with a plurality of steel balls, the steel balls are in one-to-one correspondence with the grooves, the pressure adjusting nut is in threaded fit with the connecting shaft sleeve and compresses the disc spring, and then the friction plate is pressed against the steel,
when the load of the output shaft is not greater than the rated load of the clutch, the steel balls are in static friction contact with the friction plate, and the output shaft is in transmission connection with the output gear; when the load of the output shaft is greater than the rated load of the clutch, the steel balls are in dynamic friction contact with the friction plate, and the transmission of the output shaft and the output gear fails.
2. The friction clutch according to claim 1, characterized in that: and a stop gasket is arranged between the pressure adjusting nut and the disc spring.
3. The friction clutch according to claim 1, characterized in that: the output gear is provided with a concave cavity, and the fixing piece is embedded into the concave cavity in an interference manner.
4. The friction clutch according to claim 1, characterized in that: the connecting shaft sleeves the output shafts and is in transmission connection through keys.
5. The friction clutch according to claim 1, characterized in that: the output shaft is provided with a limiting step, one end of the connecting shaft sleeve is limited by the limiting step, and the other end of the connecting shaft sleeve is locked through a clamp spring.
6. The friction clutch according to claim 1, characterized in that: the disc springs are arranged in a plurality and are used in series and/or parallel combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020273093.6U CN211874981U (en) | 2020-03-06 | 2020-03-06 | Friction clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020273093.6U CN211874981U (en) | 2020-03-06 | 2020-03-06 | Friction clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211874981U true CN211874981U (en) | 2020-11-06 |
Family
ID=73254865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020273093.6U Active CN211874981U (en) | 2020-03-06 | 2020-03-06 | Friction clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211874981U (en) |
-
2020
- 2020-03-06 CN CN202020273093.6U patent/CN211874981U/en active Active
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