CN217633548U

CN217633548U - Magnetic force type overrunning clutch

Info

Publication number: CN217633548U
Application number: CN202221610156.8U
Authority: CN
Inventors: 朱国军; 石成刚; 葛杰飞
Original assignee: Hangzhou Qianjin General Machinery Co ltd
Current assignee: Hangzhou Qianjin General Machinery Co ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2022-10-21
Anticipated expiration: 2032-06-24

Abstract

The utility model belongs to the technical field of the technique of clutch and specifically relates to a magnetic force type freewheel clutch is related to, it includes inner ring cam and outer ring gear, the inside one end open-ended annular of seting up of outer ring gear holds the chamber, the inner ring cam is located and holds the intracavity, inner ring cam circumference interval is provided with a plurality of rolling grooves, every all be provided with the roller in the rolling groove, just be provided with the magnetic part that is used for adsorbing the roller on the inner ring cam, the tank bottom in rolling groove with be formed with the wedge angle between the week side wall that holds the chamber, one side that the inner ring cam is close to and holds the intracavity end wall is provided with first end cover, first end cover with the roller is inconsistent, one side that the roller was kept away from to first end cover is provided with the ball, the ball with hold intracavity end wall connection. The application can improve the transmission efficiency between the driving part and the driven part.

Description

Magnetic force type overrunning clutch

Technical Field

The application relates to the technical field of clutches, in particular to a magnetic overrunning clutch.

Background

An overrunning clutch is a clutch which is automatically engaged and disengaged by using the rotation speed change or the rotation direction change of a driving part and a driven part. When the driving part drives the driven part to rotate together, the state is called a combined state; when the driving member and the driven member are disengaged to revolve at their respective speeds, an overrun condition is referred to. Among them, the roller overrunning clutch has the advantages of strong bearing capacity, long service life and reliable locking and is widely used in various machines.

The roller in the roller type overrunning clutch can be limited at two ends by adopting the rigid end covers, but the central position of the end covers is fixed, the outer edge positions of the end covers are the main part for limiting the roller, the roller is continuously switched between a combination state and an overrunning state in the process of repeated use, the outer edges of the end covers at two sides are deformed by the axial acting force of the roller, the axial limiting effect of the roller is deteriorated, the transmission effect of the roller is deteriorated, and finally, the transmission efficiency between the driving part and the driven part is reduced.

SUMMERY OF THE UTILITY MODEL

In order to improve the transmission efficiency between a driving part and a driven part, the application provides a magnetic force type overrunning clutch.

The application provides a magnetic force type freewheel clutch adopts following technical scheme:

the utility model provides a magnetic force type freewheel clutch, its includes inner ring cam and outer ring gear, the inside one end open-ended annular of seting up of outer ring gear holds the chamber, the inner ring cam is located and holds the intracavity, inner ring cam circumference interval is provided with a plurality of roll grooves, every all be provided with the roller in the roll groove, just be provided with the magnetic part that is used for adsorbing the roller on the inner ring cam, the tank bottom in roll groove with it is formed with the wedge angle to hold between the week lateral wall in chamber, one side that the inner ring cam is close to and holds the intracavity end wall is provided with first end cover, first end cover with the roller is inconsistent, one side that the roller was kept away from to first end cover is provided with the ball, the ball with hold intracavity end wall connection.

By adopting the technical scheme, the inner ring cam serves as a driving part to rotate, the roller rolls in the rolling groove under the driving of the centrifugal force and the inner ring cam, and the ball rolls under the driving of the centrifugal force and the first end cover. When the inner ring cam and the outer ring gear are in a combined state, the side walls of the roller are respectively abutted against the inner ring cam and the outer ring gear under the adsorption of the magnetic part and the driving of the inner ring cam, and the ball is also abutted against the first end cover and the inner end wall of the accommodating cavity. When the inner ring cam and the outer ring gear are in an overrunning state, the roller is separated from the outer ring gear at the moment, and the ball is also separated from the first end cover. The roller ensures the state switching between the inner ring cam and the outer ring gear, the ball is used for increasing the limiting effect of the first end cover, meanwhile, the force of the first end cover can be transmitted to the outer ring gear, the roller and the ball roll in a matched mode, and the transmission efficiency between the driving part and the driven part is improved.

Optionally, there is at least one of said balls.

Through adopting above-mentioned technical scheme, a plurality of balls can increase the tight effect of support between first end cover and the outer ring gear, and then increase the transmission effect between first end cover and the outer ring gear.

Optionally, the end wall of the accommodating cavity is provided with a wedge-shaped groove, the bottom wall of the wedge-shaped groove gradually extends towards the depth direction of the accommodating cavity, and each ball corresponds to one wedge-shaped groove and can move along the inclined direction of the wedge-shaped groove.

By adopting the technical scheme, the wedge-shaped groove can provide a rolling track for the ball, so that the ball can better enable the inner ring cam and the outer ring gear to be switched between a combination state and an overrunning state, and the transmission efficiency between the inner ring cam and the outer ring gear is increased.

Optionally, a second end cover is arranged on one side of the inner ring cam, which is far away from the first end cover.

Through adopting above-mentioned technical scheme, the second end cover has guaranteed the spacing of roller opposite side, and the second end cover makes the ball spacing better at roll in-process both ends with first end cover, finally promotes the transmission efficiency between inner ring cam and the outer ring gear.

Optionally, the inner ring cam is provided with a magnetic containing groove, and the magnetic part is tightly attached to the inner wall of the magnetic containing groove.

By adopting the technical scheme, the magnetic containing groove is used for containing the magnetic part, the magnetic part is used for adsorbing the roller, when the state between the inner ring cam and the outer ring gear is converted from the overrunning state to the combining state, the roller is adsorbed by the magnetic part, the roller can better roll in the rolling groove, the synchronous rotation of the inner ring cam and the outer ring gear is more stable, and the transmission efficiency between the inner ring cam and the outer ring gear is further increased.

Optionally, the cross section of the magnetic containing groove is long-waist-shaped, and the length direction of the magnetic containing groove is the same as the length direction of the roller.

Through adopting above-mentioned technical scheme, the mounting groove cross-section setting of long waist type makes corresponding magnetic part can have certain length, and is better to roller attraction effect.

Optionally, the overrunning clutch further comprises an input gear, and the input gear is connected with the second end cover, the inner ring cam and the first end cover through fasteners.

Through adopting above-mentioned technical scheme, the fastener is in the same place and rotate simultaneously input gear, second end cover, inner ring cam and first end cover fastening, and input gear provides power, and first end cover and second end cover are with the inner ring cam clamp in the centre to it is spacing to roller both ends.

Optionally, the overrunning clutch further comprises a transmission shaft, and the transmission shaft is connected with the input gear and the outer ring gear.

By adopting the technical scheme, the transmission shaft is used as a driving input shaft and mainly used for providing power for the clutch, and the power of the transmission shaft is transmitted to the outer ring gear through the input gear.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the roller rolls in the rolling groove, so that the state conversion between the inner ring cam and the outer ring gear is controlled;

2. the ball rolls in the wedge-shaped groove, and when the state between the inner ring cam and the outer ring gear is switched, the limiting effect on the roller is increased, and the transmission efficiency between the first end cover and the outer ring gear can also be increased;

3. the magnetic part in the magnetic accommodating groove can increase the rolling effect of the roller, so that the synchronous rotation of the inner ring cam and the outer ring gear is more stable.

Drawings

FIG. 1 is an exploded schematic view of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of the overall structure of an embodiment of the present application;

FIG. 3 is a schematic structural view of an outer ring gear and balls of the embodiment of the present application;

fig. 4 is a schematic layout view of the magnetic member in the mounting groove according to the embodiment of the present application.

Description of reference numerals: 1. an outer ring gear; 11. an accommodating chamber; 111. a wedge-shaped groove; 2. an inner ring cam; 21. gear teeth; 211. a first inclined plane; 212. a second inclined plane; 213. a magnetic capacity groove; 22. a rolling groove; 23. a magnetic member; 3. a roller; 4. an input gear; 5. a drive shaft; 6. a first end cap; 7. a second end cap; 8. and a ball.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a magnetic force type overrunning clutch, which comprises an outer ring gear 1, an inner ring cam 2, a roller 3, an input gear 4 and a transmission shaft 5, and is shown in fig. 1 and 2. The outer ring gear 1 is provided with an annular accommodating cavity 11 with an opening at one end, and the inner ring cam 2 is positioned in the accommodating cavity 11. The roller 3 is positioned between the outer ring gear 1 and the inner ring cam 2, the length direction of the roller 3 is the same as the thickness direction of the inner ring cam 2, and the roller 3 is used for controlling the outer ring gear 1 and the inner ring cam 2 to be switched between a combined state and an overrunning state. The input gear 4 is positioned at one side of the opening of the accommodating cavity 11, the transmission shaft 5 is fixedly connected with the input gear 4, and the transmission shaft 5 penetrates through the inner ring cam 2 and is in clearance fit with the outer ring gear 1.

Referring to fig. 1 and 2, the overrunning clutch further comprises a first end cap 6 and a second end cap 7, and the first end cap 6 and the second end cap 7 are both circular rings. The relative positions of the input gear 4, the second end cover 7, the inner ring cam 2 and the first end cover 6 are sequentially the input gear 4, the second end cover 7, the inner ring cam 2 and the first end cover 6 along the length direction of the transmission shaft 5, and the first end cover 6 is positioned on one side close to the inner end wall of the accommodating cavity 11. The inner edge of the first end cover 6, the inner ring cam 2, the second end cover 7 and the input gear 4 are detachably connected through fasteners. The roller 3 is located between the first end cap 6 and the second end cap 7, and both ends of the roller 3 abut against the first end cap 6 and the second end cap 7, respectively.

Referring to fig. 2 and 3, a plurality of balls 8, for example 8 balls, are disposed between the first end cap 6 and the inner end wall of the accommodating chamber 11. The inner end wall of the accommodating cavity 11 is provided with wedge-shaped grooves 111 for accommodating the balls 8, and the wedge-shaped grooves 111 are also 8 and each wedge-shaped groove 111 corresponds to one ball 8. The wedge groove 111 is fan-shaped and the bottom surface of the wedge groove 111 is gradually inclined toward the thickness direction of the inner end wall of the accommodation chamber 11.

Referring to fig. 4, a plurality of gear teeth 21 are disposed on the peripheral sidewall of the inner ring cam 2 at intervals, in this embodiment, 20 are taken as an example, each gear tooth 21 includes a first inclined surface 211 and a second inclined surface 212, and a vertical included angle of the first inclined surface 211 is greater than a vertical included angle of the second inclined surface 212. A tooth space is formed between adjacent teeth 21, and a rolling groove 22 is formed between the tooth space and the peripheral side wall of the accommodating chamber 11. The groove bottom of the tooth groove is formed with a wedge angle with the peripheral side wall of the accommodation chamber 11 so that the rolling groove 22 is gradually reduced in space in the direction from the first inclined surface 211 to the second inclined surface 212. The second inclined surface 212 is formed with a long-waist-shaped magnet accommodating groove 213, and the length direction of the magnet accommodating groove 213 is the same as the length direction of the roller 3. The magnetic material 23 is disposed in the magnetic holding groove 213, and the magnetic material 23 is also shaped like a long waist and can be completely inserted into the magnetic holding groove 213.

The implementation principle of the embodiment of the application is as follows:

when the inner ring cam 2 and the outer ring gear 1 are in the engaged state:

referring to the position direction shown in fig. 4, the inner ring cam 2 rotates counterclockwise, the roller 3 moves towards the second inclined surface 212 under the action of the inner ring cam 2 and the magnetic member 23, the roller 3 abuts against the inner ring cam 2 and the outer ring gear 1 at the same time, and the inner ring cam 2 and the outer ring gear 1 rotate together counterclockwise synchronously. In this process, ball 8 rolls towards the counter-clockwise, and ball 8 supports tightly with first end cover 6 gradually, and ball 8 links together first end cover 6 and outer ring gear 1, strengthens when inner ring cam 2 rotates with outer ring gear 1 jointly, has also strengthened the spacing effect of first end cover 6 to roller 3. In addition, the second end cap 7 is tightly attached to the roller 3, thereby ensuring a limit state of the other end of the roller 3.

When the inner ring cam 2 and the outer ring gear 1 are in the overrunning state:

referring to the position direction shown in fig. 4, the inner ring cam 2 rotates clockwise, the roller 3 moves towards the first inclined surface 211 under the action of the inner ring cam 2, the roller 3 gradually disengages from the outer ring gear 1, and finally the inner ring cam 2 and the outer ring gear 1 rotate relatively. In the process, the balls 8 roll clockwise, the balls 8 are gradually separated from the first end cover 6, and finally the first end cover 6 and the outer ring gear 1 rotate relatively.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A magnetic overrunning clutch, comprising: including inner ring cam (2) and outer ring gear (1), outer ring gear (1) is inside to be seted up one end open-ended annular and to hold chamber (11), inner ring cam (2) are located and hold chamber (11), inner ring cam (2) circumference interval is provided with a plurality of rolling grooves (22), every all be provided with roller (3) in rolling groove (22), just be provided with magnetic part (23) that are used for adsorbing roller (3) on inner ring cam (2), the tank bottom of rolling groove (22) with be formed with the wedge angle between the week side wall that holds chamber (11), one side that inner ring cam (2) are close to and hold chamber (11) inner end wall is provided with first end cover (6), first end cover (6) with roller (3) are inconsistent, one side that roller (3) were kept away from to first end cover (6) is provided with ball (8), ball (8) with hold chamber (11) inner end wall and connect.

2. The magnetic overrunning clutch of claim 1, wherein: at least one ball (8) is arranged.

3. A magnetic overrunning clutch according to claim 2, wherein: the end wall that holds chamber (11) has seted up wedge groove (111), the diapire of wedge groove (111) extends towards holding chamber (11) depth direction gradually, every ball (8) correspond one wedge groove (111) just ball (8) can be followed the incline direction removal of wedge groove (111).

4. A magnetic overrunning clutch according to claim 1, wherein: and a second end cover (7) is arranged on one side, far away from the first end cover (6), of the inner ring cam (2).

5. The magnetic overrunning clutch of claim 1, wherein: the inner ring cam (2) is provided with a magnetic containing groove (213), and the magnetic piece (23) is tightly attached to the inner wall of the magnetic containing groove (213).

6. The magnetic overrunning clutch of claim 5, wherein: the cross section of the magnetic containing groove (213) is long waist type, and the length direction is the same as the length direction of the roller (3).

7. The magnetic overrunning clutch of claim 4, wherein: the overrunning clutch further comprises an input gear (4), and the input gear (4) is connected with the second end cover (7), the inner ring cam (2) and the first end cover (6) through fasteners.

8. The magnetic overrunning clutch of claim 7, wherein: the overrunning clutch further comprises a transmission shaft (5), and the transmission shaft (5) is connected with the input gear (4) and the outer ring gear (1).