CN218818069U

CN218818069U - Bearing lubricating structure and transmission

Info

Publication number: CN218818069U
Application number: CN202223226539.8U
Authority: CN
Inventors: 马声文; 黄宁; 李玉保
Original assignee: Magna PT Powertrain Jiangxi Co Ltd
Current assignee: Magna PT Powertrain Jiangxi Co Ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-04-07
Anticipated expiration: 2032-11-29

Abstract

The utility model discloses a bearing lubrication structure and a speed changer, which relates to the technical field of speed changer devices, wherein the lubrication structure is used for lubricating a bearing on the speed changer, the speed changer comprises a speed changer shell and an intermediate shaft arranged in the speed changer shell, a lubrication cavity is arranged between the intermediate shaft and the speed changer shell, and the bearing is arranged in the lubrication cavity; the lubricating structure comprises a transmission channel arranged in the intermediate shaft and an oil guide assembly arranged on the transmission shell, one end of the transmission channel is communicated with the oil guide assembly, and the other end of the transmission channel is communicated with the lubricating cavity; the outer edge of the side wall of the middle shaft, which is far away from the oil guide assembly, is sleeved with an oil blocking piece; when the transmission works, oil stirred in the transmission shell enters the lubricating cavity through the oil guide assembly and the transmission channel so as to lubricate the bearing. Through this setting, realize fully lubricating the bearing, avoid the bearing to lose efficacy because of overheated, realized many-sided good lubricated smooth to the bearing.

Description

Bearing lubricating structure and transmission

Technical Field

The utility model relates to a derailleur technical field specifically is a bearing lubrication structure and derailleur.

Background

A Transmission, also called a Transmission, is a mechanism for changing the rotational speed and torque from an engine, and is capable of changing the Transmission ratio of a countershaft and an input shaft by fixing or stepping. When the middle shaft of the speed changer rotates at a high speed, the heat generated by the bearing is large, and the bearing needs to be lubricated forcibly, and if the bearing is not lubricated sufficiently, the heat generated by rotation cannot be taken away in time, so that the bearing is overheated and fails.

The lubricating mode of moving parts on each shaft of the automobile transmission is that oil is usually supplied from the end face of the intermediate shaft and is used for lubricating all parts through radial holes. The terminal surface of axle usually has bearing and fixing device, adopts the derailleur bearing of passive lubrication to mainly rely on differential mechanism ring gear to stir oil, and the bearing lubrication of low level then mainly relies on oil guide rib or lubricates with the lubricating oil that the top bearing opening flows, but the lubricating oil volume that the top bearing exists can't be guaranteed to this kind of lubricated mode, and fluid through the gear can't be guaranteed to provide abundant lubrication for the bearing of eminence. A unique arrangement of the transmission assembly is required to ensure proper lubrication of the bearings, and the existing solution is usually to increase the amount of transmission lubrication oil.

However, the oil level is ensured to be at a high level and not to cover the bearing, although the problem of oil shortage of the bearing can be solved temporarily by forming an initial lubricating oil film, the high oil level easily causes oil stirring loss, and the problem of failure caused by overheating of the bearing of the transmission is caused.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing a bearing lubrication structure and derailleur to solve the overheated inefficacy problem that leads to of bearing among the background art.

One aspect of the present invention is to provide a bearing lubrication structure, where the lubrication structure is used to lubricate a bearing on a transmission, the transmission includes a transmission housing and an intermediate shaft disposed in the transmission housing, a lubrication cavity is disposed between the intermediate shaft and the transmission housing, and the bearing is disposed in the lubrication cavity;

the lubricating structure comprises a transmission channel arranged in the intermediate shaft and an oil guide assembly arranged on a transmission shell, one end of the transmission channel is communicated with the oil guide assembly, and the other end of the transmission channel is communicated with the lubricating cavity;

the outer edge of the side wall of the middle shaft, which is far away from the oil guide assembly, is sleeved with an oil blocking piece;

when the derailleur is in operation, the fluid of stirring in the derailleur casing is through lead oily subassembly with transmission channel, entering in the lubricated cavity, through keep off oily spare, make the entering fluid orientation in the lubricated cavity the bearing is transmitted, in order to right the bearing is lubricated.

Furthermore, one end of the transmission channel, which is far away from the oil guide assembly, is provided with at least one oil outlet, and the transmission channel is communicated with the lubricating cavity through the oil outlet.

Further, the transmission housing comprises a bearing seat, the bearing seat is located at one end, far away from the oil outlet, of the intermediate shaft, and the bearing is located on the bearing seat.

Further, lead oily subassembly including locating first oil groove in the bearing frame, and locate the outer second oil groove of bearing frame, the second oil groove with first oil groove UNICOM, first oil groove with transmission channel UNICOM.

Further, the cross section of the bearing seat is circular, and the first oil groove spirally extends from outside to inside along the outer edge of the bearing seat.

Further, the second oil groove is located at the bottom of the bearing seat.

Further, keep off oil spare and include the sealing washer, the one end of jackshaft, and be close to the one side of oil-out are located to the sealing washer cover.

An aspect of the utility model is to provide a derailleur, include as above the bearing lubrication structure who provides, bearing lubrication structure locates on the derailleur.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a bearing lubrication structure, transmission channel in locating the jackshaft, and locate the oil guide assembly on the gearbox housing, transmission channel's one end and oil guide assembly UNICOM, the other end and lubricated cavity UNICOM, the jackshaft is kept away from the lateral wall outer fringe cover of oil guide assembly and is equipped with and keeps off oil spare, when the derailleur is carrying out the during operation, the fluid of stirring in the gearbox housing is through leading oil assembly and transmission channel, get into in the lubricated cavity, through keeping off oil spare, make the fluid in getting into the lubricated cavity transmit towards the bearing, in order to lubricate the bearing, compared with the prior art, through this setting, make lubricating oil flow out from the oil-out and get into lubricated cavity internal back, produce the backward flow, and in order to fully lubricate the bearing, avoid the bearing to lose efficacy because of overheated, the many-sided good lubricated smooth to the bearing has been realized.

Drawings

FIG. 1 is a schematic illustration of a transmission housing in an embodiment of the present invention;

FIG. 2 is a side cross-sectional view of a transmission housing in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a lubricating structure according to an embodiment of the present invention;

fig. 4 is an enlarged view of a portion a in fig. 1.

In the figure: 100. a transmission housing; 110. a bearing seat; 200. a bearing; 300. an intermediate shaft; 400. a lubricating structure; 410. lubricating the cavity; 420. a transmission channel; 421. an oil outlet; 430. an oil guide assembly; 431. a first oil groove; 432. a second oil groove; 500. keep off oil spare.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

First embodiment

Referring to fig. 1 to 4, a bearing lubrication structure according to an embodiment of the present invention is shown, in which a lubrication structure 400 is used to lubricate a bearing 200 on a transmission, the transmission includes a transmission housing 100 and an intermediate shaft 300 disposed in the transmission housing 100, a lubrication cavity 410 is disposed between the intermediate shaft 300 and the transmission housing 100, and the bearing 200 is disposed in the lubrication cavity 410;

the lubricating structure 400 comprises a transmission channel 420 arranged in the intermediate shaft 300, and an oil guide assembly 430 arranged on the transmission housing 100, wherein one end of the transmission channel 420 is communicated with the oil guide assembly 430, and the other end is communicated with the lubricating cavity 410;

wherein, the outer edge of the sidewall of the middle shaft 300 far away from the oil guiding assembly 430 is sleeved with an oil blocking member 500;

when the transmission is in operation, oil agitated in the transmission housing 100 enters the lubricating cavity 410 through the oil guide assembly 430 and the transfer passage 420, passes through the oil baffle 500, and is transferred toward the bearing 200 to lubricate the bearing 200.

Specifically, at least one oil outlet 421 is provided at one end of the transmission channel 420 far from the oil guide assembly 430, the transmission channel 420 is communicated with the lubricating cavity 410 through the oil outlet 421, in some preferred embodiments, the oil outlet 421 may be provided in two, that is, when the transmission is in operation, oil entering the transmission channel 420 can rapidly enter the lubricating cavity 410 so as to lubricate the bearing 200 of the transmission.

In practical applications, the transmission housing 100 includes a bearing seat 110, the bearing seat 110 is disposed at an end of the intermediate shaft 300 far from the oil outlet 421, in practical applications, the intermediate shaft 300 is rotatably connected in the transmission housing 100, the bearing 200 is located on the bearing seat 110, the oil guide assembly 430 includes a first oil groove 431 disposed in the bearing seat 110, and a second oil groove 432 disposed outside the bearing seat 110, the second oil groove 432 is communicated with the first oil groove 431, and the first oil groove 431 is communicated with the transmission channel 420.

Specifically, the cross section of the bearing seat 110 is circular, the first oil groove 431 extends spirally from outside to inside along the outer edge of the bearing seat 110, the second oil groove 432 is located at the bottom of the bearing seat 110, the first oil groove 431 is an oil guide groove, the second oil groove 432 is an oil storage groove, oil in the transmission housing 100 is guided from the first oil groove 431, and the oil passes through the second oil groove 432 and enters the transmission channel 420.

Further, keep off oily piece 500 and include the sealing washer, the one end of jackshaft 300 is located to the sealing washer cover, and is close to one side of oil-out 421, through the sealing performance of sealing washer for fluid can be more smooth and easy flow to bearing 200 directions, also can avoid the condition of fluid weeping simultaneously.

The following is a specific operation flow:

when the transmission works, gears and shafts inside the transmission rotate, so that lubricating oil inside the transmission, namely oil splashes, the splashed lubricating oil flows to the second oil groove 432 along the first oil groove 431, the lubricating oil overflows from the second oil groove 432 and enters the transmission channel 420, because the transmission works, the intermediate shaft 300 is in a rotating state, and the oil enters the transmission channel 420, under the action of centrifugal force, the lubricating oil flows out from the oil outlet 421 and enters the lubricating cavity 410, the oil entering the lubricating cavity 410 flows back through the arrangement of the sealing ring, the sealing ring is provided with the auxiliary lubricating cavity 410 to form an oil path which circles back, so that the lubricating oil is lubricated in a backflow manner, the bearing 200 is fully lubricated, the bearing 200 is prevented from being failed due to overheating, and various aspects of good lubrication on the bearing 200 are realized.

In summary, a bearing lubrication structure in this novel embodiment one, for the lubrication mode to bearing 200 among the prior art, has following beneficial effect at least:

1. the utility model provides a bearing lubrication structure, including locating transmission channel 420 in jackshaft 300, and locate the oily subassembly 430 of leading on the gearbox housing 100, transmission channel 420's one end and the oily subassembly 430 UNICOM of leading, the other end and lubricated cavity 410 UNICOM, jackshaft 300 keeps away from the lateral wall outer fringe cover of leading oily subassembly 430 and is equipped with fender oil 500, when the derailleur is carrying out during operation, the fluid of stirring in the gearbox housing 100 is through leading oily subassembly 430 and transmission channel 420, get into in the lubricated cavity 410, through fender oil 500, make the fluid that gets into in the lubricated cavity 410 transmit towards bearing 200, in order to lubricate bearing 200, through this setting, make lubricating oil flow out from oil-out 421 and get into lubricated cavity 410 back, produce the backward flow, and in order to carry out the abundant lubrication to bearing 200, avoid bearing 200 to lose efficacy because of overheating, many-sided good lubrication to bearing 200 is smooth has been realized.

Second embodiment

The utility model discloses the second embodiment provides a derailleur, adopts the bearing lubrication structure in the above-mentioned first embodiment, and this bearing lubrication structure locates on the derailleur.

In summary, the transmission in the second embodiment of the present invention has at least the following advantages compared to the bearing lubrication structure in the first embodiment:

a bearing lubricating structure is arranged in the transmission, so that the bearing 200 is fully lubricated, and the bearing 200 is prevented from being failed due to overheating.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above embodiments only represent several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A bearing lubricating structure is characterized in that the lubricating structure is used for lubricating a bearing on a transmission, the transmission comprises a transmission shell and an intermediate shaft arranged in the transmission shell, a lubricating cavity is arranged between the intermediate shaft and the transmission shell, and the bearing is arranged in the lubricating cavity;

2. The bearing lubrication structure according to claim 1, wherein: and one end of the transmission channel, which is far away from the oil guide assembly, is provided with at least one oil outlet, and the transmission channel is communicated with the lubricating cavity through the oil outlet.

3. The bearing lubrication structure according to claim 2, wherein: the transmission shell comprises a bearing seat, the bearing seat is arranged at one end, far away from the oil outlet, of the intermediate shaft, and the bearing is located on the bearing seat.

4. A bearing lubrication structure as claimed in claim 3, wherein: lead oily subassembly including locating first oil groove in the bearing frame, and locate the outer second oil groove of bearing frame, the second oil groove with first oil groove UNICOM, first oil groove with transmission channel UNICOM.

5. The bearing lubrication structure according to claim 4, wherein: the cross section of the bearing seat is circular, and the first oil groove spirally extends from outside to inside along the outer side edge of the bearing seat.

6. The bearing lubrication structure according to claim 5, wherein: the second oil groove is positioned at the bottom of the bearing seat.

7. The bearing lubrication structure according to claim 2, wherein: the oil blocking piece comprises a sealing ring, and one end of the middle shaft and one side close to the oil outlet are sleeved with the sealing ring.

8. A transmission comprising a bearing lubrication structure as claimed in any one of claims 1 to 7 provided on the transmission.