CN215908273U

CN215908273U - Inner hub and clutch

Info

Publication number: CN215908273U
Application number: CN202122406037.2U
Authority: CN
Inventors: 万全喜; 杜鑫; 张广瀚; 李三帅
Original assignee: Shengrui Transmission Co Ltd
Current assignee: Shengrui Transmission Co Ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-02-25
Anticipated expiration: 2031-09-30

Abstract

The disclosure relates to the technical field of transmissions, in particular to an inner hub and a clutch. The inner hub comprises an inner hub main body, the inner hub main body comprises a main body portion, a first clamping tooth portion and a second clamping tooth portion, the main body portion and the first clamping tooth portion are located on the inner wall of the inner hub main body, the second clamping tooth portion is located on the outer wall of the inner hub main body, the inner hub main body further comprises a first through hole and a second through hole, the first through hole penetrates through the main body portion and the second clamping tooth portion, and the second through hole penetrates through the first clamping tooth portion and the second clamping tooth portion. Oil in the first through hole and the second through hole respectively flows to the friction disc, cools and lubricates the friction disc, and accumulated oil in the clutch can be discharged by adding the second through hole, so that the problem of accumulated oil in the clutch is solved, and the accumulated oil can cool and lubricate the friction disc.

Description

Inner hub and clutch

Technical Field

The disclosure relates to the technical field of transmissions, in particular to an inner hub and a clutch.

Background

An automotive transmission is a set of transmission devices for coordinating the rotational speed of an engine and the actual driving speed of wheels, and is used for exerting the best performance of the engine. Automatic transmissions, which have the advantages of driving comfort, reducing driver fatigue, etc., are the most common and have been the direction of development in modern passenger car configurations, typically include a plurality of planetary gear sets and a plurality of shift elements, including clutches and brakes. The transmission relationship of each planetary transmission assembly is changed through the gear shifting unit, so that the automatic transmission outputs different rotating speeds. The clutch comprises a friction plate set and a piston device, and the friction plate set is pressed or loosened through the piston device so as to control the clutch to be closed or opened. The inner side and the outer side of the friction plate set are respectively connected with an inner hub and an outer hub, and the friction plate set is connected with other transmission parts through the inner hub and the outer hub so as to control the rotating states of the two transmission parts.

When the clutch is used, lubricating oil needs to be supplied to the friction plate set, so that the effects of lubricating and cooling the friction plate set are achieved. In the prior art, an oil hole is usually formed in an inner hub, and lubricating oil flows to a friction plate set through the oil hole under the action of centrifugal force, but when the oil supply mode is adopted, the problem of oil accumulation exists.

SUMMERY OF THE UTILITY MODEL

To solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides an inner hub and a clutch.

The present disclosure provides an inner hub installed in a clutch, comprising: the inner hub comprises an inner hub main body, a first clamping tooth part and a second clamping tooth part, wherein the main body part and the first clamping tooth part are positioned on the inner wall of the inner hub main body, and the second clamping tooth part is positioned on the outer wall of the inner hub main body;

the inner hub main body further comprises a first through hole and a second through hole, the first through hole penetrates through the main body portion and the second clamping tooth portion, and the second through hole penetrates through the first clamping tooth portion and the second clamping tooth portion.

Optionally, the first through holes are provided in a plurality, and the plurality of first through holes are all provided as straight holes.

Optionally, the second through holes are provided in a plurality, and the plurality of second through holes are all provided as straight holes.

Optionally, an oil collecting groove is formed in the inner wall of the main body portion, and the oil collecting groove is communicated with the first through hole.

The present disclosure also provides a clutch, comprising: the oil passes through the oil baffle plate, the planet wheel shaft, the gear ring and the inner hub in sequence and flows to the friction plate;

the first through hole is used for discharging oil on the outer wall of the gear ring;

the ring gear, the planet carrier and the inner hub form a cavity, and the second through hole is used for discharging oil in the cavity.

Optionally, the clutch further includes a copper sleeve and a connecting sleeve, a portion of the connecting sleeve is located between the copper sleeve and the gear ring, a gap is formed between the connecting sleeve and the gear ring for flowing oil, so that a portion of the oil flows to the outer hub, and another portion of the oil flows to the first through hole.

Optionally, the clutch further includes a first inner hub, and oil in the first inner hub flows to the planetary wheel shaft through the oil baffle plate.

Optionally, the clutch further comprises a thrust bearing and a needle bearing, the thrust bearing is located inside the oil baffle plate, and the needle bearing is located between the planet wheel shaft and the planet wheel.

Optionally, the clutch further comprises a sealing sleeve, and the sealing sleeve is located outside the connecting sleeve and used for sealing the connecting sleeve.

Optionally, a groove is formed in the outer wall of the connecting sleeve, a sealing protrusion is arranged on the inner wall of the sealing sleeve, and the sealing protrusion extends into the groove.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the inner hub provided by the embodiment of the disclosure comprises an inner hub main body, wherein the inner hub main body comprises a main body part, a first clamping tooth part and a second clamping tooth part, the main body part and the first clamping tooth part are positioned on the inner wall of the inner hub main body, the second clamping tooth part is positioned on the outer wall of the inner hub main body, the inner hub main body further comprises a first through hole and a second through hole, the first through hole penetrates through the main body part and the second clamping tooth part, and the second through hole penetrates through the first clamping tooth part and the second clamping tooth part. Oil in the first through hole and the second through hole respectively flows to the friction disc, cools and lubricates the friction disc, and accumulated oil in the clutch can be discharged by adding the second through hole, so that the problem of accumulated oil in the clutch is solved, and the accumulated oil can cool and lubricate the friction disc.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic view of the internal structure of a prior art clutch;

FIG. 2 is a schematic structural view of an inner hub according to an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view of an inner hub according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of an internal structure of a clutch according to an embodiment of the present disclosure;

fig. 5 is a partially enlarged view as described based on fig. 4.

Wherein the content of the first and second substances,

1. an inner hub body; 11. a main body portion; 12. a first latch part; 13. a second latch part; 14. a first through hole; 15. a second through hole; 16. an oil sump; 2. an oil baffle plate; 31. a planetary wheel shaft; 32. a planet wheel; 33. a ring gear; 34. a planet carrier; 4. a copper sleeve; 5. connecting sleeves; 6. a first inner hub; 7. a needle bearing; 8. sealing sleeves; 9. an outer hub; 10. a cavity.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

As shown in fig. 1, in the prior art, a plurality of latches are arranged at intervals on the periphery of an inner hub 1a, a slot is formed between two adjacent latches, and a limit tooth matched with the slot is arranged on the inner wall of a friction plate (not shown in the figure and located below the inner hub 1 a) so that the inner hub 1a and the friction plate rotate synchronously. In general, part of lubricating oil flows away through the inner wall of the inner hub 1a, and a small amount of lubricating oil enters the friction plate set through the oil hole 4a, so that the cooling and lubricating effects of the friction plate set are reduced. However, there is a problem in that the cavity 10 is formed between the ring gear 332a, the carrier 343a and the inner hub 1a, and the cavity 10 cannot communicate with the oil holes 4a, so that the cavity 10 may trap oil, resulting in that the inner hub 1a rotates with an excessive weight, and the rotation of the inner hub 1a is affected.

Based on this, the present disclosure provides an inner hub solving the technical problem described above.

Referring to fig. 2 to 3, the embodiment of the present disclosure provides an inner hub including an inner hub main body 1, the inner hub main body 1 including a main body portion 11, a first latch portion 12 and a second latch portion 13, the main body portion 11 and the first latch portion 12 being located on an inner wall of the inner hub main body 1, the second latch portion 13 being located on an outer wall of the inner hub main body 1, the inner hub main body 1 further including a first through hole 14 and a second through hole 15, the first through hole 14 penetrating the main body portion 11 and the second latch portion 13, and the second through hole 15 penetrating the first latch portion 12 and the second latch portion 13. Oil in the first through hole 14 and the second through hole 15 respectively flows to the friction plate to cool and lubricate the friction plate, oil accumulation in the clutch can be discharged by adding the second through hole 15, and the problem of oil accumulation of the clutch is solved, and the oil accumulation can cool and lubricate the friction plate.

Since the cavity 10 is formed among the ring gear 33, the carrier 34 and the inner hub in the clutch when in use, and oil is accumulated in the cavity 10, the present disclosure communicates with the cavity 10 through the second through hole 15, so that the oil in the cavity 10 can be discharged from the second through hole 15, and oil accumulation is avoided.

In some embodiments, the first through holes 14 are provided in a plurality, the first through holes 14 are all provided as straight holes, the oil can be discharged quickly by the arrangement of the first through holes 14, and meanwhile, the first through holes 14 are straight holes, so that holes can be conveniently formed, and the processing technology is simple.

Since the first through hole 14 in the prior art is an inclined hole, it is difficult to open the hole, so that the manufacturing process is complicated.

The oil collecting groove 16 is formed in the inner wall of the main body portion 11, the oil collecting groove 16 is communicated with the first through hole 14, when the oil collecting device is used, oil on the inner wall of the inner hub flows into the oil collecting groove 16 firstly and then flows into the first through hole 14, oil can be collected conveniently through the oil collecting groove 16, and more oil flows into the first through hole 14.

In some embodiments, the second through holes 15 are provided in a plurality, the second through holes 15 are all provided as straight holes, the first through holes 14 can accelerate the discharge of oil, and the first through holes 14 are straight holes, so that the holes can be conveniently formed, and the processing technology is simple.

Referring to fig. 4 to 5, an embodiment of the present disclosure provides a clutch including: the oil baffle plate 2, the planet wheel shaft 31, the planet carrier 34, the planet wheel 32, the gear ring 33, the friction plate (not shown in the figure and positioned below the inner hub), the inner hub and the outer hub 9, wherein oil sequentially passes through the oil baffle plate 2, the planet wheel shaft 31, the gear ring 33 and the inner hub and flows to the friction plate; the first through hole 14 is used for discharging oil on the outer wall of the gear ring 33; the ring gear 33, the planet carrier 34 and the inner hub form a cavity 10, the second through hole 15 is used for discharging oil inside the cavity 10, and is mainly communicated with the cavity 10 through the second through hole 15 on the inner hub, so that the oil in the cavity 10 can be discharged from the second through hole 15, oil storage is avoided, and the oil in the second through hole 15 is discharged onto the friction plate to cool and lubricate the friction plate.

In some embodiments, the clutch further comprises a copper sleeve 4 and a connecting sleeve 5, a part of the connecting sleeve 5 is positioned between the copper sleeve 4 and the gear ring 33, and a gap is formed between the connecting sleeve 5 and the gear ring 33 for flowing oil, so that a part of the oil flows to the outer hub 9, and the other part of the oil flows to the first through hole 14 and is discharged to the friction plate through the first through hole 14, so as to cool and lubricate the friction plate.

In some embodiments, the clutch further comprises a first inner hub 6, and the oil in the first inner hub 6 flows to the planetary wheel shaft 31 through the oil baffle plate 2, so that the planetary wheel shaft 31 can be lubricated.

In some embodiments, the clutch further comprises a thrust bearing and a needle bearing 7, wherein the thrust bearing is positioned inside the oil baffle plate 2 and can limit the oil baffle plate 2; the needle roller bearing 7 is positioned between the planetary wheel shaft 31 and the planetary wheel 32, so that the planetary wheel shaft 31 and the planetary wheel 32 can rotate conveniently, and oil can lubricate the planetary wheel shaft and the planetary wheel.

In some embodiments, the clutch further comprises a sealing sleeve 8, the sealing sleeve 8 being located outside the connecting sleeve 5 for sealing the connecting sleeve 5 from oil flowing outside the clutch.

In some embodiments, the outer wall of the connecting sleeve 5 is provided with a groove, and the inner wall of the sealing sleeve 8 is provided with a sealing protrusion, and the sealing protrusion extends into the groove, so that the sealing effect can be realized.

It should be noted that the oil baffle 2, the planetary wheel shaft 31, the planetary carrier 34, the planetary wheel 32, the gear ring 33, the friction plate, the copper sleeve 4, the connecting sleeve 5, the first inner hub 6, the thrust bearing, the needle bearing 7 and the sealing sleeve 8 in the embodiment are all existing structures, and therefore a specific description is not made here, and the structure of the inner hub is emphasized and protected in the present disclosure.

In summary, the oil in the clutch provided by the embodiment of the present disclosure flows to the oil baffle 2 through the first inner hub 6, then flows to the planetary shaft 31, then flows to the side walls of the planetary gear 32 and the ring gear 33 along the gap between the needle bearing 7 and the planetary shaft 31, then flows to the outer wall of the ring gear 33, then a part of the oil flows to the outer hub 9, and another part of the oil flows to the first through hole 14, and is discharged to the friction plate through the first through hole 14, so as to cool and lubricate the friction plate. At the same time, the oil in the ring gear 33, the carrier 34 and the inner hub forming cavity 10 is drained to the friction plates through the second through holes 15, so that the friction plates are cooled and lubricated, and the rotation of the inner hub is not influenced because the oil is prevented from being stored.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An inner hub for mounting in a clutch, comprising: the inner hub comprises an inner hub main body (1), wherein the inner hub main body (1) comprises a main body part (11), a first clamping tooth part (12) and a second clamping tooth part (13), the main body part (11) and the first clamping tooth part (12) are positioned on the inner wall of the inner hub main body (1), and the second clamping tooth part (13) is positioned on the outer wall of the inner hub main body (1);

the inner hub main body (1) further comprises a first through hole (14) and a second through hole (15), the first through hole (14) penetrates through the main body portion (11) and the second clamping tooth portion (13), and the second through hole (15) penetrates through the first clamping tooth portion (12) and the second clamping tooth portion (13).

2. An inner hub according to claim 1, wherein the first through hole (14) is provided in plurality, and the first through holes (14) are each provided as a straight hole.

3. An inner hub according to claim 1, wherein the second through holes (15) are provided in plurality, and the second through holes (15) are each provided as a straight hole.

4. An inner hub according to claim 1, wherein the inner wall of the main body portion (11) defines an oil sump (16), the oil sump (16) communicating with the first through hole (14).

5. A clutch, comprising: -an oil deflector (2), -a planet wheel shaft (31), -a planet carrier (34), -a planet wheel (32), -a gear ring (33), -friction discs, -an outer hub (9) and-an inner hub according to any of claims 1-4, -oil flows through the oil deflector (2), -the planet wheel shaft (31), -the gear ring (33) and the inner hub in turn and to the friction discs;

the first through hole (14) is used for discharging oil on the outer wall of the gear ring (33);

the ring gear (33), the planet carrier (34) and the inner hub form a cavity (10), and the second through hole (15) is used for discharging oil inside the cavity (10).

6. Clutch according to claim 5, further comprising a copper sleeve (4) and a connecting sleeve (5), wherein a portion of the connecting sleeve (5) is located between the copper sleeve (4) and the ring gear (33), and wherein a gap is formed between the connecting sleeve (5) and the ring gear (33) for oil flow, such that a portion of the oil flows towards the outer hub (9) and another portion of the oil flows towards the first through hole (14).

7. Clutch according to claim 5, further comprising a first inner hub (6), wherein the oil in the first inner hub (6) flows through the oil deflector (2) towards the planet wheel shaft (31).

8. Clutch according to claim 5, further comprising a thrust bearing located inside the oil deflector (2) and a needle bearing (7), the needle bearing (7) being located between the planet wheel shaft (31) and the planet wheels (32).

9. Clutch according to claim 6, further comprising a sealing sleeve (8), said sealing sleeve (8) being located outside the connection sleeve (5) for sealing the connection sleeve (5).

10. Clutch according to claim 9, wherein the connecting sleeve (5) is provided with a recess on its outer wall and the sealing sleeve (8) is provided with a sealing protrusion on its inner wall, said sealing protrusion extending into said recess.