CN215980546U

CN215980546U - One-way clutch

Info

Publication number: CN215980546U
Application number: CN202122300541.4U
Authority: CN
Inventors: 陈细春; 陈孙艺
Original assignee: Quanzhou Kpl Electric Appliance For Vehicle Co ltd
Current assignee: Quanzhou Kpl Electric Appliance For Vehicle Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-03-08
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses a one-way clutch which comprises a moving shaft, a spline sleeve and a front bearing, wherein one end of the moving shaft is provided with a driving gear, the moving shaft is provided with a polished rod section and an external spiral spline section, and the polished rod section is connected with the driving gear and is positioned between the driving gear and the external spiral spline section; a limiting hole is formed in the spline housing, an internal spiral spline section is arranged in the limiting hole, the movable shaft penetrates through the limiting hole of the spline housing, and the external spiral spline section of the movable shaft is connected with the internal spiral spline section of the limiting hole and can move relatively along the axial direction; a front bearing is arranged on the outer wall of the spline housing close to the driving gear, and a sealing baffle plate of which the sealing sleeve is arranged on the outer wall of the spline housing is arranged on one surface of the front bearing close to the driving gear; an oil seal is arranged between the spline housing and the outer wall of the polished rod section. Compared with the prior art, the one-way clutch has the advantages that the sealing baffle and the oil seal are arranged, so that the gap close to one side of the driving gear is sealed, and the service life of the one-way clutch in a wading environment is prolonged.

Description

One-way clutch

Technical Field

The utility model relates to the field of starter clutches, in particular to a one-way clutch.

Background

The existing starter with an eccentric outer speed reduction structure comprises: 1. the isolator front bearing is directly assembled with the front end cover without sealing measures, and muddy water can enter the starter through a gap between the bearing and the front cover and a gap between the bearing cover plate and the inner ring and the outer ring; 2. the movable shaft and the spline sleeve have no sealing measure, and muddy water can enter the isolator through the spiral spline; when the starter with the structure is used for wading vehicles, particularly agricultural machinery and engineering machinery, the starter is easy to cause water inlet corrosion and failure.

In view of the above, the present inventors have made extensive studies on the above-mentioned drawbacks of the prior art, and have made this invention.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a one-way clutch which has the characteristic of improving the sealing effect of the starter one-way clutch and is particularly suitable for wading vehicles.

In order to achieve the above purpose, the solution of the utility model is:

a one-way clutch comprises a moving shaft, a spline sleeve and a front bearing, wherein one end of the moving shaft is provided with a driving gear, a polished rod section and an external spiral spline section are arranged on the moving shaft, and the polished rod section is connected with the driving gear and is positioned between the driving gear and the external spiral spline section; a limiting hole is formed in the spline sleeve, an internal spiral spline section is arranged in the limiting hole, the moving shaft penetrates through the limiting hole of the spline sleeve, and the external spiral spline section of the moving shaft is connected with the internal spiral spline section of the limiting hole and can move relatively along the axial direction; the outer wall of the spline housing, which is close to the driving gear, is provided with a front bearing, and one surface of the front bearing, which is close to the driving gear, is provided with a sealing baffle plate of which the sealing sleeve is arranged on the outer wall of the spline housing; and an oil seal is arranged between the spline sleeve and the outer wall of the polished rod section.

Further, the sealing baffle comprises an annular supporting sheet, a rubber lip is arranged on the annular supporting sheet, and the rubber lip abuts against and is sealed on the outer wall of the spline housing.

Furthermore, the annular supporting sheet is sleeved on the inner ring of the outer wall of the spline sleeve to form a flange, and the rubber lip is fixedly connected to the flange.

Further, the annular supporting sheet is made of a stamped steel plate; the middle of the annular supporting sheet is provided with a bending part, the inner side of the bending part is parallel to the outer side of the plate, the outer side of the plate is closer to the front bearing, and the annular supporting sheet on the outer side of the bending part abuts against the outer ring of the front bearing.

Further, one side of the annular supporting sheet, which is far away from the front bearing, is provided with a rubber layer, and the rubber layer is in contact with the front cover.

Furthermore, an inner hole matched with the outer diameter of the polished rod section of the movable shaft is also arranged in the limiting hole.

Further, the cover is equipped with the rear bearing on the spline housing outer wall, still the cover is equipped with the star gear on the spline housing outer wall, the star gear is located between front bearing and the rear bearing, the star gear with be provided with the roller between the spline housing outer wall, the part of star gear and roller contact is formed with the wedge groove.

Further, the end face of the star wheel is provided with a cover plate, the cover plate is sleeved on the outer wall of the spline sleeve, and a sealing gasket is arranged on one surface, facing the roller, of the cover plate.

Furthermore, a front shaft sleeve is arranged between the star wheel and the spline sleeve, and a rear shaft sleeve is arranged between the cover plate and the spline sleeve.

Furthermore, one end of the moving shaft, which is far away from the driving gear, is provided with a baffle ring, the moving shaft is sleeved with a return spring, and two ends of the return spring respectively abut against the spline sleeve and the baffle ring.

After the structure is adopted, the one-way clutch provided by the utility model has at least the following beneficial effects:

firstly, a sealing baffle is arranged at the front end of a front bearing, so that after the one-way clutch is installed on a starter, the sealing baffle is in sealing contact with a front cover of the starter; the sealing baffle is also sealed and sleeved on the outer wall of the spline housing, so that the front bearing is isolated from the outside. An oil seal is further arranged between the spline sleeve and the polished rod section of the movable shaft, so that muddy water is prevented from entering the isolator from a gap between the spline sleeve and the movable shaft. Through the arrangement of the sealing baffle and the oil seal, the full sealing effect at the joint of the one-way clutch of the starter is realized, and the service life of the starter in a wading environment is prolonged.

The sealing baffle is composed of an annular supporting sheet, a rubber lip and a rubber layer, the rubber lip abuts against the outer wall of the polished rod section, the rubber lip can continuously abut against and seal with the polished rod section in the axial moving process of the moving shaft, the rubber layer abuts against the front cover of the starter and is matched with the rubber lip, and the gap exposed from one side, facing the driving gear, of the front bearing is sealed.

Compared with the prior art, the one-way clutch has the advantages that the sealing baffle and the oil seal are arranged, so that the gap close to one side of the driving gear is sealed, and the service life of the one-way clutch in a wading environment is prolonged.

Drawings

Fig. 1 is a schematic view of the overall structure of a one-way clutch according to the present invention.

Fig. 2 is a schematic view of the entire structure of the moving shaft.

FIG. 3 is a schematic cross-sectional view of the spline housing.

Fig. 4 is a schematic sectional structure view of the sealing baffle.

FIG. 5 is a schematic representation of the use of a one-way clutch.

Fig. 6 is an enlarged schematic view of the structure at B in fig. 5.

In the figure:

a moving shaft 1; a drive gear 11; a polished rod segment 12; an externally threaded splined section 13; a retainer ring 14; a return spring 15;

a spline housing 2; a stopper hole 21; an internally helical spline section 22; an inner bore 23; an accommodating groove 231; an oil seal 24; a front bearing 25; a rear bearing 26;

a star wheel 3; a roller 31; a cover plate 32; a gasket 33; a front bushing 34; a rear shaft sleeve 35;

a sealing baffle 4; a ring-shaped support plate 41; a flange 411; a bent portion 412; a rubber lip 42; a rubber layer 43;

a front cover 100.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

As shown in fig. 1 to 6, the one-way clutch according to the present invention comprises a moving shaft 1, a spline housing 2 and a front bearing 25, wherein a driving gear 11 is arranged at one end of the moving shaft 1, a polished rod section 12 and an external helical spline section 13 are arranged on the moving shaft 1, and the polished rod section 12 is connected with the driving gear 11 and is located between the driving gear 11 and the external helical spline section 13; a limiting hole 21 is formed in the spline housing 2, an internal spiral spline section 22 is arranged in the limiting hole 21, the movable shaft 1 is arranged in the limiting hole 21 of the spline housing 2 in a penetrating mode, and the external spiral spline section 13 of the movable shaft 1 is connected with the internal spiral spline section 22 of the limiting hole 21 and can move relatively along the axial direction; a front bearing 25 is arranged on the outer wall of the spline housing 2 close to the driving gear 11, and a sealing baffle 4 which is sealed and arranged on the outer wall of the spline housing 2 in a sealing manner is arranged on one surface of the front bearing 25 close to the driving gear 11; an oil seal 24 is arranged between the spline housing 2 and the outer wall of the polished rod section 12.

In this way, according to the one-way clutch provided by the utility model, the sealing baffle 4 is arranged at the front end of the front bearing 25, so that after the one-way clutch is installed on the starter, the sealing baffle 4 is in sealing contact with the front cover 100 of the starter; the sealing baffle 4 is also hermetically sleeved on the outer wall of the spline housing 2, so that the front bearing 25 is isolated from the outside. An oil seal 24 is further arranged between the spline housing 2 and the polished rod section 12 of the moving shaft 1, so that muddy water is prevented from entering the isolator from a gap between the spline housing 2 and the moving shaft 1. Through the arrangement of the sealing baffle 4 and the oil seal 24, the full sealing effect at the joint of the one-way clutch of the starter is realized, and the service life of the starter in a wading environment is prolonged.

Preferably, the sealing baffle 4 comprises an annular supporting sheet 41, a rubber lip 42 is arranged on the annular supporting sheet 41, and the rubber lip 42 abuts against and seals against the outer wall of the spline housing 2. The annular support sheet 41 is sleeved on an inner ring of the outer wall of the spline housing 2 to form a flange 411, and the rubber lip 42 is fixedly connected to the flange 411. The side of the annular supporting sheet 41, which faces away from the front bearing 25, is provided with a rubber layer 43, and the rubber layer 43 is in contact with the front cover. The seal baffle 4 is composed of an annular support sheet 41, a rubber lip 42 and a rubber layer 43, the rubber lip 42 is abutted against the outer wall of the polished rod section 12, the rubber lip 42 can be continuously abutted against and sealed with the polished rod section 12 in the axial moving process of the moving shaft 1, and the rubber layer 43 is abutted against the front cover 100 of the starter to be matched with the rubber lip 42, so that the gap exposed from one side of the front bearing 25 facing the driving gear 11 is sealed.

Preferably, the annular support piece 41 is made of a stamped steel plate; a bending part 412 is formed in the middle of the annular supporting sheet 41, the inner side of the bending part 412 is parallel to the outer side of the plate, the outer side of the plate is closer to the front bearing 25, and the annular supporting sheet 41 outside the bending part 412 is abutted against the outer ring of the front bearing 25. In this way, only the outer side of the annular support piece 41 facing the front bearing 25 is in contact with the outer ring of the front bearing 25 and is not in contact with the inner ring of the front bearing 25, and the annular support piece 41 does not affect the rotation of the front bearing 25. By providing the bent portion 412, it is also beneficial to improve the strength of the annular support sheet 41.

Preferably, an inner hole 23 matched with the outer diameter of the polished rod section 12 of the movable shaft 1 is further arranged in the limiting hole 21; one end of the inner hole 23 close to the driving bearing is provided with a containing groove 231, and the oil seal 24 is installed in the containing groove 231. The inner hole 23 is arranged, so that the spline seat can better support the movable shaft 1.

Preferably, the cover is equipped with rear bearing 26 on the spline housing 2 outer wall, still the cover is equipped with star gear 3 on the spline housing 2 outer wall, star gear 3 is located between front bearing 25 and the rear bearing 26, star gear 3 with be provided with roller 31 between the spline housing 2 outer wall, the part of star gear 3 and roller 31 contact is formed with the wedge groove. The roller 31 is arranged in the wedge-shaped groove, is clamped between the star wheel 3 and the spline housing 2 during forward transmission and is integrated through friction. When slipping in the reverse direction, the roller 31 slips to a wide place.

Preferably, a cover plate 32 is arranged on the end face of the star wheel 3, the cover plate 32 is sleeved on the outer wall of the spline housing 2, and a sealing gasket 33 is arranged on one surface of the cover plate 32 facing the roller 31; the cover plate 32 and the gasket 33 enclose the roller 31 in the cavity of the star wheel 3. Further, be provided with preceding axle sleeve 34 for spline housing 2 supports between star gear 3 and the spline housing 2, the apron 32 with be provided with the back axle sleeve 35 for spline housing 2 supports between the spline housing 2.

Preferably, one end of the moving shaft 1, which is far away from the driving gear 11, is provided with a stop ring 14, a return spring 15 is sleeved on the moving shaft 1, and two ends of the return spring 15 respectively abut against the spline housing 2 and the stop ring 14. After the starting is finished, the return spring 15 drives the moving shaft 1 to move backwards for returning.

Compared with the prior art, the one-way clutch has the advantages that the sealing baffle 4 and the oil seal 24 are arranged, so that the gap close to one side of the driving gear 11 is sealed, and the service life of the one-way clutch in a wading environment is prolonged.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.

Claims

1. A one-way clutch is characterized by comprising a moving shaft, a spline sleeve and a front bearing, wherein one end of the moving shaft is provided with a driving gear, the moving shaft is provided with a polished rod section and an external spiral spline section, and the polished rod section is connected with the driving gear and is positioned between the driving gear and the external spiral spline section; a limiting hole is formed in the spline sleeve, an internal spiral spline section is arranged in the limiting hole, the moving shaft penetrates through the limiting hole of the spline sleeve, and the external spiral spline section of the moving shaft is connected with the internal spiral spline section of the limiting hole and can move relatively along the axial direction; the outer wall of the spline housing, which is close to the driving gear, is provided with a front bearing, and one surface of the front bearing, which is close to the driving gear, is provided with a sealing baffle plate of which the sealing sleeve is arranged on the outer wall of the spline housing; and an oil seal is arranged between the spline sleeve and the outer wall of the polished rod section.

2. The one-way clutch according to claim 1, wherein the seal retainer includes an annular support plate with a rubber lip that seals against the outer wall of the spline housing.

3. The one-way clutch according to claim 2, wherein the annular support plate is provided with a flange at the inner ring of the outer wall of the spline housing, and the rubber lip is fixedly connected to the flange.

4. The one-way clutch according to claim 2, wherein the annular support plate is formed of stamped steel; the middle of the annular supporting sheet is provided with a bending part, the inner side of the bending part is parallel to the outer side of the plate, the outer side of the plate is closer to the front bearing, and the annular supporting sheet on the outer side of the bending part abuts against the outer ring of the front bearing.

5. The one-way clutch according to claim 2, wherein a rubber layer is provided on a side of the annular support plate facing away from the front bearing, the rubber layer being in contact with the front cover.

6. The one-way clutch according to claim 1, wherein the limiting hole is further provided with an inner hole matched with the outer diameter of the polish rod section of the moving shaft; one end of the inner hole close to the driving bearing is provided with an accommodating groove, and the oil seal is installed in the accommodating groove.

7. The one-way clutch according to claim 1, wherein the spline housing is sleeved with a rear bearing, the spline housing is further sleeved with a star wheel, the star wheel is located between the front bearing and the rear bearing, a roller is arranged between the star wheel and the spline housing outer wall, and a wedge groove is formed in a part of the star wheel contacting with the roller.

8. The one-way clutch according to claim 7, wherein the star wheel has a cover plate on an end surface thereof, the cover plate is fitted over an outer wall of the spline housing, and a seal is provided on a side of the cover plate facing the roller.

9. The one-way clutch according to claim 8, wherein a front sleeve is disposed between the spider and the spline housing, and a rear sleeve is disposed between the cover plate and the spline housing.

10. The one-way clutch according to claim 1, wherein a stop ring is disposed at an end of the moving shaft away from the driving gear, a return spring is sleeved on the moving shaft, and two ends of the return spring respectively abut against the spline housing and the stop ring.