CN214535629U

CN214535629U - Automatic transmission and suction filter for same

Info

Publication number: CN214535629U
Application number: CN202120261886.0U
Authority: CN
Inventors: 程志磊; 唐广清; 王超; 曲海军; 苏小完; 杜增强
Original assignee: Honeycomb Transmission Technology Hebei Co Ltd
Current assignee: Honeycomb Transmission Technology Hebei Co Ltd
Priority date: 2021-01-30
Filing date: 2021-01-30
Publication date: 2021-10-29
Anticipated expiration: 2031-01-30

Abstract

The utility model discloses a suction filter for automatic transmission, including straining a section of thick bamboo, check valve, sealed lid and suction filter casing, the one end of straining a section of thick bamboo is connected with sealed lid, and the other end is provided with the oil feed passageway, and the one end of suction filter casing is used for being connected and communicating with the lateral wall of derailleur main casing body, and the other end can be dismantled with sealed lid and be connected, and derailleur oil can pass a section of thick bamboo along radial and get into the cavity between straining a section of thick bamboo outer wall and the suction filter casing, and when the check valve was opened, gearbox oil bypass got into above-mentioned cavity; the utility model also discloses an automatic transmission, including the main casing body, inhale filter casing and foretell automatic transmission with inhaling the filter, inhale filter casing and main casing body side wall's bottom fixed connection and through the connecting pipe intercommunication, the one end and the main casing body fixed connection of connecting pipe, the other end stretches into and strains a section of thick bamboo. The utility model discloses an inhale the filter and set up the check valve, make the oil pump difficult to inhale empty, inhale the filter setting in one side of the main casing body, change portably and do benefit to and reduce whole case height.

Description

Automatic transmission and suction filter for same

Technical Field

The utility model belongs to the technical field of the derailleur, especially, relate to automatic transmission is with inhaling filter and automatic transmission.

Background

At present, in the disclosed suction oil filter structure of an automatic transmission, there are a flat type, an integrated type and a cylinder type, among which, the flat type is most widely used, when a transmission oil pump is running, a flat type suction filter works, because a negative pressure is generated at an oil outlet of the suction filter, oil enters into the suction filter from an oil suction port of the suction filter, the oil flows out from the oil outlet after being filtered by filter paper in the suction filter and is driven by an oil pump to enter into a hydraulic system, in order to ensure oil suction, the flat type suction filter structure is required to be arranged at an oil pan of the transmission and immerse the oil suction port into the oil, therefore, a suction filter space is required to be left between the oil bottom and a transmission gear, and the oil bottom of the transmission is required to be designed into a plane to place the suction filter, so that the whole box is high, and the transmission needs to be disassembled when the suction filter is replaced, the operation is complicated, and the space in the height direction of the transmission is saved, most of the filter paper is of a single-layer or double-layer structure, the dirt containing capacity is low, and when the pressure difference between the inside and the outside of the suction filter is too large, the risk of pumping air out of the oil pump exists.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic transmission is with inhaling filter and automatic transmission to solve the problem that above-mentioned prior art exists, reduce the whole case height of derailleur, inhale the filter and change portably, the oil pump is difficult to inhale empty.

In order to achieve the above purpose, the specific technical solution of the present invention is as follows:

the utility model provides a suction filter for an automatic transmission, which comprises a filter cylinder, a one-way valve, a sealing cover and a suction filter shell, one end of the filter cylinder is connected with the sealing cover, the other end of the filter cylinder is provided with an oil inlet channel, one end of the suction filter shell is used for being connected and communicated with the side wall of the main transmission shell, the sealing cover is detachably connected with the free end of the suction filter shell, transmission oil enters the filter cylinder through the oil inlet channel, and is capable of passing radially through the filter cartridge into a cavity between the outer wall of the filter cartridge and the suction filter housing, the one-way valve is arranged in the filter cylinder, when the one-way valve is opened, the gearbox oil flows through the oil inlet channel, the inner cavity of the filter cylinder and the one-way valve in sequence, and enters a cavity between the outer wall of the filter cylinder and the suction filter shell through a flow passage between the filter cylinder and the sealing cover.

Preferably, the filter cartridge comprises a bottom cover, a filter element and a top cover, the outer diameters of the bottom cover and the top cover are not smaller than the outer diameter of the filter element, the bottom cover is provided with the oil inlet channel, the oil inlet channel and the bottom cover are coaxially arranged, one end of the filter element extends into the oil inlet channel, the other end of the filter element is connected with the top cover, one end of the bottom cover, which is far away from the filter element, is fixedly provided with a clamping plate, the end surface of one end of the filter element, which extends into the oil inlet channel, the clamping plate and the inner wall of the oil inlet channel form an installation part, the installation part is used for installing a first sealing ring, and one end of the top cover, which is far away from the filter cartridge, is connected with the sealing cover; the one-way valve comprises a valve core, a valve seat and a compression spring, the valve seat is fixedly arranged on the inner wall of one side, close to the sealing cover, of the filter cylinder, one end of the compression spring is connected with the valve core and tightly presses the valve core on the valve seat, the other end of the compression spring is connected with the end part of one end, used for being connected with the sealing cover, of the filter cylinder, and the valve core and the valve seat are sealed in a linear or surface mode.

Preferably, the top cover is detachably connected with the sealing cover.

Preferably, the top cover is fixedly provided with a clamping jaw, the sealing cover is fixedly provided with a buckle, and the clamping jaw is clamped with the buckle.

Preferably, the filter core includes center tube and filter media, the one end of center tube is followed the axial direction of bottom stretches into the oil feed passageway, the other end of center tube with the top cap is connected, the center tube stretches into the terminal surface of the one end of oil feed passageway the cardboard reaches the inner wall of oil feed passageway constitutes the installation department, a plurality of oil through holes have been seted up on the lateral wall of center tube, the filter media cladding is in on the outer wall of center tube, the filter media is the folding paper filter media of star type.

Preferably, the outer wall of one end of the central tube extending into the oil inlet channel is fixedly provided with a protrusion, the inner wall of the oil inlet channel is provided with a groove, and the protrusion is clamped with the groove.

Preferably, the sealing cover is sleeved with a second sealing ring and a third sealing ring, and the second sealing ring and the third sealing ring are used for sealing a connecting part of the suction filter shell and the sealing cover.

The utility model also provides an automatic transmission, automatic transmission including the main casing body, inhale filter casing and any one of the above-mentioned auto transmission is with inhaling the filter, the main casing body is used for laying change gear mechanism and oil pump, inhale the filter casing with main casing body side wall's bottom fixed connection to through the connecting pipe intercommunication, the one end of connecting pipe with main casing body fixed connection, the other end is followed the axial direction who strains a section of thick bamboo stretches into strain a section of thick bamboo, sealed lid with inhale filter casing bolted connection.

Preferably, when the oil pump works, the oil level in the main shell is higher than the oil inlet channel, and the height difference is not less than 10 mm.

Preferably, the main housing is integrally formed with the suction filter housing.

The utility model discloses for prior art gain following technological effect:

the utility model discloses an automatic transmission is with inhaling filter and automatic transmission inhaleing the filter setting in one side of the main casing body of derailleur, not only changes portably, does benefit to the whole case height of reduction derailleur moreover, sets up the check valve for when leading to straining a section of thick bamboo internal pressure too big because of straining dirty, derailleur oil flow smoothly, derailleur oil can push up the check valve and carry out the bypass, and the oil pump is difficult to inhale the sky.

Drawings

FIG. 1 is a sectional view of a suction filter for an automatic transmission according to a first embodiment;

FIG. 2 is a schematic view of a suction strainer for an automatic transmission according to an embodiment;

FIG. 3 is a schematic view showing a seal cover structure of a suction strainer for an automatic transmission according to an embodiment;

fig. 4 is a partial schematic view of an automatic transmission according to a second embodiment.

The notation in the figure is: 1. a sealing cover; 2. an oil inlet channel; 3. a valve core; 4. a valve seat; 5. a compression spring; 6. a bottom cover; 7. a top cover; 8. clamping a plate; 9. a first seal ring; 10. a claw; 11. buckling; 12. a central tube; 13. a filter material; 14. a second seal ring; 15. a third seal ring; 16. a main housing; 17. a suction filter housing; 18. a connecting pipe; 19. and an oil outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

Example one

The present embodiment provides a suction filter for an automatic transmission, as shown in fig. 1 to 3, in the present embodiment, the suction filter for an automatic transmission includes a filter cartridge, a one-way valve, a sealing cover 1 and a suction filter housing, one end of the filter cartridge is connected to the sealing cover 1, the other end of the filter cartridge is provided with an oil inlet channel 2, one end of the suction filter housing is used for being connected and communicated with a side wall of a transmission main housing, the sealing cover 1 is detachably connected to a free end of the suction filter housing, transmission oil enters the filter cartridge through the oil inlet channel 2 and can radially pass through the filter cartridge to enter a cavity between an outer wall of the filter cartridge and the suction filter housing, when the one-way valve is opened, transmission oil sequentially flows through the oil inlet channel 2 and an inner cavity of the filter cartridge and enters the cavity between the outer wall of the filter cartridge and the suction filter housing through a flow channel between the filter cartridge and the sealing cover 1, the suction filter is transversely disposed on a side surface of the transmission housing, the height of the whole box is favorably reduced, the internal space of a locomotive cabin is convenient to optimize, when a filter cylinder is not blocked by impurities in transmission oil, the transmission oil penetrates through the side wall of the filter cylinder and enters a cavity formed by the outer wall of the filter cylinder and a suction filter shell, and flows to an oil outlet under the suction force of an oil pump, after the suction filter works for a period of time, the dirt receiving capacity of the filter cylinder is limited, the transmission oil passing performance is poor due to the dirt of the filter cylinder, the pressure in the filter cylinder is increased, when the pressure in the filter cylinder is increased to a certain degree, a one-way valve is opened under the action of oil pressure, the transmission oil directly flows through an inner cavity of the filter cylinder and the one-way valve, and enters the cavity between the outer wall of the filter cylinder and the suction filter shell through a flow passage between the filter cylinder and a sealing cover 1, and the phenomenon that the oil pump is vacuumed due to the dirt of the filter cylinder is prevented.

Further, the filter cartridge comprises a bottom cover 6, a filter element and a top cover 7, the outer diameters of the bottom cover 6 and the top cover 7 are not smaller than the outer diameter of the filter element, an oil inlet channel 2 is formed in the bottom cover 6, the oil inlet channel 2 and the bottom cover 1 are coaxially arranged, one end of the filter element extends into the oil inlet channel 2, the other end of the filter element is connected with the top cover 7, a clamping plate 8 is fixedly arranged at one end, far away from the filter element, of the bottom cover 6, the end face, extending into the oil inlet channel 2, of the filter element, the clamping plate 8 and the inner wall of the oil inlet channel 2 form an installation part, the installation part is used for installing a first sealing ring 9, one end, far away from the filter cartridge, of the top cover 7 is connected with a sealing cover 1, the bottom cover 6 and the top cover 7 clamp the filter cartridge, the first sealing ring 9 seals the oil inlet channel 2 to prevent leakage, the first sealing ring 9 is limited by the combination of the bottom cover 6 and the filter cartridge, is not stretched, and the service life is long; the check valve comprises a valve core 3, a valve seat 4 and a compression spring 5, the valve seat 4 is fixedly arranged on the inner wall of one side, close to the sealing cover 1, of the filter cylinder, one end of the compression spring 5 is connected with the valve core 3 and tightly presses the valve core 3 on the valve seat 4, the other end of the compression spring 5 is connected with the end, used for being connected with the sealing cover 1, of the filter cylinder, the valve core 3 and the valve seat 4 are sealed in a linear or surface mode, when the oil pressure in the filter cylinder is increased to be enough to overcome the elastic force of the compression spring 5, the valve core 3 is jacked open by transmission oil, the check valve is opened, and the phenomenon that the oil pump is emptied due to dirt in the filter cylinder is avoided.

Furthermore, the top cover 7 is detachably connected with the sealing cover 1, so that the filter cartridge is convenient to replace.

Furthermore, a clamping jaw 10 is fixedly arranged on the top cover 7, a buckle 11 is fixedly arranged on the sealing cover 1, and the clamping jaw 10 is clamped with the buckle 11.

Further, the filter core includes center tube 12 and filter media 13, the axial direction of bottom 6 is followed to the one end of center tube 12 stretches into oil feed passageway 2, the other end and the top cap 7 of center tube 12 are connected, the center tube 12 stretches into the terminal surface of the one end of oil feed passageway 2, cardboard 8 and oil feed passageway 2's inner wall constitute the installation department, a plurality of oil through holes have been seted up on the lateral wall of center tube 12, filter media 13 cladding is on the outer wall of center tube 12, filter media 13 is the folding paper filter media of star type, center tube 12 supports filter media 13, the folding filter area who has increased the filter core of paper filter media star type, the dirty ability of receiving of filtration efficiency and filter media 13 has been improved.

Furthermore, the outer wall of one end, extending into the oil inlet channel 2, of the central pipe 12 is fixedly provided with a protrusion, the inner wall of the oil inlet channel 2 is provided with a groove, the protrusion is clamped with the groove, the position of the protrusion on the central pipe and the position of the groove on the bottom cover are set according to the specification of the first sealing ring 9, and the relative position of the central pipe 12 and the bottom cover 6 is limited after the protrusion and the groove are clamped.

Further, the sealing cover 1 is sleeved with a second sealing ring 14 and a third sealing ring 15, the second sealing ring 14 and the third sealing ring 15 are used for sealing a connecting portion between the suction filter shell and the sealing cover 1, and two continuous sealing rings are arranged, so that sealing of the sealing cover 1 on the suction filter shell is guaranteed.

Example two

The present embodiment provides an automatic transmission, as shown in fig. 4, in the present embodiment, the automatic transmission includes a main housing 16, a suction filter housing 17 and a suction filter for the automatic transmission of the first embodiment, the main housing 16 is used for placing a transmission gear mechanism and an oil pump, the suction filter housing 17 is fixedly connected with the bottom of the side wall of the main housing 16 and is communicated with the main housing 16 through a connecting pipe 18, one end of the connecting pipe 18 is fixedly connected with the main housing 16, the other end of the connecting pipe 18 extends into a filter cartridge along the axial direction of the filter cartridge, a sealing cover 1 is bolted with the suction filter housing 17, the connecting pipe 18 is fixedly connected with the main housing 16 by welding or integrally forming, the free end of the connecting pipe 18 extends into the filter cartridge, the gearbox oil filtered or bypassed by the filter cartridge enters the oil pump through an oil outlet 19, the sealing cover 1 is bolted with the suction filter housing 17, the dismounting is simple and convenient, the suction filter is transversely disposed on the side surface of the main housing 16, do benefit to and reduce whole case height, moreover, inhale the filter and do not exert an influence to the shape of derailleur casing bottom, the shape can be set for according to actual demand in the bottom of derailleur casing.

Further, when the oil pump works, the oil level in the main shell 16 is higher than the oil inlet channel 2, and the height difference is not less than 10 mm.

Further, the main housing 16 and the suction filter housing 17 are integrally formed, and the manufacturing is simple.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. A suction filter for an automatic transmission is characterized by comprising a filter cylinder, a one-way valve, a sealing cover and a suction filter shell, one end of the filter cylinder is connected with the sealing cover, the other end of the filter cylinder is provided with an oil inlet channel, one end of the suction filter shell is used for being connected and communicated with the side wall of the main transmission shell, the sealing cover is detachably connected with the free end of the suction filter shell, transmission oil enters the filter cylinder through the oil inlet channel, and is capable of passing radially through the filter cartridge into a cavity between the outer wall of the filter cartridge and the suction filter housing, the one-way valve is arranged in the filter cylinder, when the one-way valve is opened, the gearbox oil flows through the oil inlet channel, the inner cavity of the filter cylinder and the one-way valve in sequence, and enters a cavity between the outer wall of the filter cylinder and the suction filter shell through a flow passage between the filter cylinder and the sealing cover.

2. The suction filter for the automatic transmission according to claim 1, wherein the filter cartridge comprises a bottom cover, a filter element and a top cover, the outer diameters of the bottom cover and the top cover are not smaller than the outer diameter of the filter element, the bottom cover is provided with the oil inlet channel, the oil inlet channel is coaxially arranged with the bottom cover, one end of the filter element extends into the oil inlet channel, the other end of the filter element is connected with the top cover, one end of the bottom cover, which is far away from the filter element, is fixedly provided with a clamping plate, the end surface of one end of the filter element, which extends into the oil inlet channel, the clamping plate and the inner wall of the oil inlet channel form an installation part, the installation part is used for installing a first sealing ring, and one end of the top cover, which is far away from the filter cartridge, is connected with the sealing cover; the one-way valve comprises a valve core, a valve seat and a compression spring, the valve seat is fixedly arranged on the inner wall of one side, close to the sealing cover, of the filter cylinder, one end of the compression spring is connected with the valve core and tightly presses the valve core on the valve seat, the other end of the compression spring is connected with the end part of one end, used for being connected with the sealing cover, of the filter cylinder, and the valve core and the valve seat are sealed in a linear or surface mode.

3. The suction strainer for an automatic transmission according to claim 2, wherein the top cover is detachably attached to the seal cover.

4. The automatic transmission suction strainer of claim 3 wherein the top cover is fixedly provided with a jaw, the sealing cover is fixedly provided with a buckle, and the jaw is clamped with the buckle.

5. The automatic transmission of claim 2 is with inhaling filter, characterized in that, the filter core includes center tube and filter media, the one end of center tube is followed the axial direction of bottom stretches into the oil feed passageway, the center tube stretches into the terminal surface of the one end of oil feed passageway the cardboard reaches the inner wall of oil feed passageway constitutes the installation department, the other end of center tube with the top cap is connected, a plurality of logical oilholes have been seted up on the lateral wall of center tube, the filter media cladding is in on the outer wall of center tube, the filter media is the folding paper filter media of star type.

6. The suction filter for the automatic transmission according to claim 5, wherein a protrusion is fixedly arranged on the outer wall of one end of the central pipe, which extends into the oil inlet channel, a groove is formed on the inner wall of the oil inlet channel, and the protrusion is clamped with the groove.

7. The suction strainer for an automatic transmission according to claim 1, wherein a second seal ring and a third seal ring for sealing a connection portion of the suction strainer housing and the seal cover are fitted over the seal cover.

8. An automatic transmission, characterized by, including main casing, inhale filter casing and automatic transmission of any one of claims 1 ~ 7 with inhale the filter, the main casing is used for laying change gear mechanism and oil pump, inhale filter casing with the bottom fixed connection of main casing lateral wall, and communicate through the connecting pipe, the one end of connecting pipe with main casing fixed connection, the other end is followed strain an axial direction of section of thick bamboo and is stretched into strain a section of thick bamboo, sealed lid with inhale filter casing bolted connection.

9. The automatic transmission of claim 8, wherein when the oil pump is operated, the oil level in the main casing is higher than the oil inlet passage by a height difference of not less than 10 mm.

10. The automatic transmission of claim 8, wherein the main housing is integrally formed with the suction filter housing.