CN210715895U - Built-in electronic gear shifting hydraulic system of automatic gearbox and gearbox assembly - Google Patents
Built-in electronic gear shifting hydraulic system of automatic gearbox and gearbox assembly Download PDFInfo
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- CN210715895U CN210715895U CN201921235046.6U CN201921235046U CN210715895U CN 210715895 U CN210715895 U CN 210715895U CN 201921235046 U CN201921235046 U CN 201921235046U CN 210715895 U CN210715895 U CN 210715895U
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Abstract
The utility model discloses a built-in electronic gear shifting hydraulic system of an automatic gearbox and a gearbox assembly, wherein the hydraulic system comprises a D/N/R gear shifting mechanism, a gear shifting electronic control valve, an actuating mechanism, an oil supply cavity and an oil circuit; the D/N/R gear shifting mechanism comprises a valve body, a gear shifting valve core, a limiting valve core, a spring and an end plug; the limiting valve core is provided with a left working position and a right working position; the gear shifting valve core is provided with a left working position, a middle working position and a right working position which respectively correspond to R, N, D gears; the gear shifting electronic control valve comprises an electromagnetic switch valve A and an electromagnetic switch valve B; when the gear D is engaged, the electromagnetic switch valve A is closed; when the N gear is engaged, the electromagnetic switch valve A and the electromagnetic switch valve B are both opened; when the gear R is engaged, the electromagnetic switch valve A is opened, and the electromagnetic switch valve B is closed; the automatic D/N/R gear shifting is realized, the driving automation degree is improved, the size is reduced, the cost is reduced, and the gear shifting reliability is enhanced.
Description
Technical Field
The utility model relates to an automobile automatic transmission technical field especially relates to an automatic transmission embeds electron hydraulic system and gearbox assembly of shifting gears.
Background
At present, most automatic-gear automobiles with continuously variable transmissions adopt mechanical gear shifting, and a driver is still required to operate a gear shifting lever to shift P, R, N, D gears. This method also requires a space for arrangement and requires a high level of driving skill for the driver. With the improvement of the automobile automation technology, the mechanical gear shifting structure is difficult to meet the requirements of automobile intellectualization and users, and the vehicle has an electronic gear shifting function on the premise of the application of technologies such as automatic parking and automatic driving. Under the condition of not changing the internal structure of the gearbox, the automatic gear shifting function of the automobile can be realized by adding the external electronic gear shifting mechanism, but the external electronic gear shifting mechanism still needs a certain driving space for arrangement and is not flexible enough; the built-in electronic gear shifting mechanism is beneficial to the assembly of the space in the vehicle, but the space occupation in the gearbox still needs to be reduced. The integrated multi-way valve series-parallel connection type oil circuit adopted by the existing large multi-electronic gear shifting mechanism is not beneficial to the mechanical self-locking function of the oil circuit, gear shifting impact is easy to occur, the reliability is poor, the multi-way valve oil circuit adopts a plurality of electromagnetic valves, the oil circuit connection is complex, and the cost is high.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Based on the problem, the utility model provides an automatic gearbox embeds electron hydraulic system and gearbox assembly that shifts realizes automatic the gear shifting, reduces the volume, and reduce cost improves and drives degree of automation, reinforcing reliability.
(II) technical scheme
Based on the technical problem, the utility model provides a built-in electronic gear shifting hydraulic system of automatic transmission, including D/N/R gearshift, electronic control valve of shifting, actuating mechanism, oil feed chamber and oil circuit; the D/N/R gear shifting mechanism comprises a valve body, a gear shifting valve core and a limiting valve core which are matched with the valve body to form at least one sealing section, a spring and an end plug; the inner cavity of the valve body is provided with three stages of stepped holes with different diameters, the stepped holes are gradually reduced from left to right and used for being matched with valve cores with different diameters to play a limiting role, and the valve body is provided with three oil inlets, two oil outlets, two oil return ports and two oil drainage ports; the limiting valve core is in a structure that two cylinders are connected, the effective area of the end surface of the left side is larger than that of the end surface of the right side, and the limiting valve core is provided with a left working position and a right working position; the gear shifting valve core is provided with a left working position, a middle working position and a right working position; the gear shifting electronic control valve comprises an electromagnetic switch valve A and an electromagnetic switch valve B; the actuating mechanism comprises a first actuating mechanism and a second actuating mechanism; the oil supply cavity comprises a switch valve oil supply cavity, a parking control oil cavity and a clutch control oil cavity;
the parking control oil cavity and the clutch control oil cavity are connected with a third oil inlet on the valve body after passing through a filter, the first oil outlet is connected with a first oil return port and an execution mechanism, the second oil outlet is connected with a second oil return port and the second execution mechanism, and damping holes are formed in feedback oil paths at the first oil return port and the second oil return port; the two oil drainage ports are connected with an oil tank.
Preferably, the first actuating mechanism is a D-gear clutch, and the second actuating mechanism is an R-gear clutch.
Preferably, the gear shifting electronic control valves are all connected with a human-computer interaction platform, and the human-computer interaction platform is a button, a knob or a panel.
Further, the three states of the hydraulic shifting system are as follows:
when the D/N/R gear shifting mechanism is in a D gear, the electromagnetic switch valve A is closed, the gear shifting valve core is located at the right position, the third oil inlet is communicated with the first oil outlet, the third oil inlet is not communicated with the second oil outlet, and the second oil outlet is communicated with the second oil drainage port;
when the D/N/R gear shifting mechanism is hung in the N gear, the electromagnetic switch valve A and the electromagnetic switch valve B are both opened, the limiting valve core is positioned at the right position, the gear shifting valve core is positioned at the middle position, the oil inlet III is not communicated with the oil outlet I and the oil outlet II, and the oil outlet I is communicated with the oil drainage port I and the oil drainage port II;
when the D/N/R gear shifting mechanism is in the R gear, the electromagnetic switch valve A is opened, the electromagnetic switch valve B is closed, the limiting valve core is located at the left position, the gear shifting valve core is located at the left position, the oil inlet III is communicated with the oil outlet II, the oil inlet III is not communicated with the oil outlet I, and the oil outlet I is communicated with the oil drainage port I.
Furthermore, the built-in electronic gear shifting hydraulic system of the automatic gearbox is integrated inside the hydraulic valve body assembly.
An automatic automobile continuously variable transmission assembly comprises an electronic gear shifting hydraulic system arranged in the automatic transmission.
(III) advantageous effects
The above technical scheme of the utility model has following advantage:
(1) the utility model adopts a built-in electronic gear-shifting hydraulic system, adopts electronic signal control, realizes automatic D/N/R gear-shifting switching, cancels a mechanical gear-shifting rod, thereby reducing the carriage occupation space, and the space arrangement in the vehicle is more convenient, the driving automation degree is improved, and the driving requirement to the driver is lower;
(2) the utility model adopts a self-locking mechanism, when the vehicle is engaged with the gear D and the gear R, even if the switch electromagnetic valve A or the switch electromagnetic valve B fails, the vehicle can keep the original gear, the gear shifting reliability is enhanced, and the safety is improved;
(3) the damping hole is adopted at the oil return port, the oil drainage speed of the hydraulic oil is controlled through the damping hole, so that the clutch cannot be immediately disengaged, and the backstop impact is effectively buffered, so that the driving is more comfortable;
(4) the utility model can change the buffer effect by changing the diameter of the damping hole, thereby meeting the demand of mechanical, electrical and hydraulic combined control in different working condition occasions;
(5) the built-in electronic gear shifting hydraulic system can be integrated inside the hydraulic valve body assembly, and the integrated structural design is favorable for integrated processing and forming, so that the integrated structure is compact, the oil circuit design is simple, the arrangement in the gearbox is convenient, and the cost is lower;
(6) d, N, R keeps off, and the time of hanging D fender is generally the longest, the utility model discloses when hanging D fender, two solenoid valves are all unworkable, need not to supply power to the solenoid valve, and the cost is practiced thrift in the oil consumption reduction.
Drawings
The features and advantages of the invention will be more clearly understood by reference to the accompanying drawings, which are schematic and should not be understood as imposing any limitation on the invention, in which:
fig. 1 is a schematic diagram of a D-gear structure of a shift hydraulic system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an N-gear structure of the shift hydraulic system according to the embodiment of the present invention;
fig. 3 is a schematic diagram of an R-gear structure of the shift hydraulic system according to the embodiment of the present invention;
in the figure: 1: an on-off valve oil supply chamber; 2: a parking control oil chamber; 3: an oil outlet II; 4: a clutch control oil cavity; 5: a first oil outlet; 6: an electromagnetic switching valve A; 7: a shift valve core; 8: an oil return port II; 9: a D-gear clutch; 10: an R-gear clutch; 11: a second oil drainage port; 12: an oil return opening I; 13: a limiting valve core; 14: an electromagnetic on-off valve B; 15: a valve body; 16: an end plug; 17: an oil inlet I; 18: an oil inlet II; 19: an oil inlet III; 20: and an oil drainage port I.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
A built-in electronic gear shifting hydraulic system of an automatic gearbox comprises a D/N/R gear shifting mechanism, a gear shifting electronic control valve, an actuating mechanism, an oil supply cavity and an oil way; the D/N/R gear shifting mechanism comprises a valve body 15, a gear shifting valve core 7 and a limiting valve core 13 which are matched with the valve body 15 to form at least one sealing section, a spring and an end plug; the inner cavity of the valve body 15 is provided with 3 stages of stepped holes with different diameters, the stepped holes are gradually reduced from left to right and used for being matched with valve cores with different diameters to play a limiting role, and the stepped holes are provided with a first oil inlet 17, a second oil inlet 18, a third oil inlet 19, a first oil outlet 5, a second oil outlet 3, a first oil return opening 12, a second oil return opening 8, a first oil drain opening 20 and a second oil drain opening 11; the limiting valve core 13 is in a structure that two cylinders are connected, the effective area of the end surface of the left side is larger than that of the end surface of the right side, and the limiting valve core has a left working position and a right working position; the gear shifting valve core 7 has a left working position, a middle working position and a right working position which respectively correspond to R, N, D gears; the gear shifting electronic control valve comprises an electromagnetic switch valve A6 and an electromagnetic switch valve B14; the actuating mechanism comprises a D-gear clutch and an R-gear clutch; the oil supply cavity comprises a switch valve oil supply cavity 1, a parking control oil cavity 2 and a clutch control oil cavity 4;
the switch valve supplies oil chamber 1 and connects the oil feed end of electromagnetic switch valve A6 and electromagnetic switch valve B14, and oil inlet 17 and oil inlet two 18 are connected respectively to the oil outlet end of electromagnetic switch valve A6 and electromagnetic switch valve B14, and parking control oil chamber 2 and clutch control oil chamber 4 are connected oil inlet three 19 behind the filter, and oil-out one 5 is connected oil return opening one 12 and D and is kept off clutch 9, and oil-out two 3 are connected oil return opening two 8 and R and are kept off clutch 10, all be provided with the damping hole on the feedback oil way of oil return opening one 12 and oil return opening two 8 department, two draining port 11 connecting oil tanks.
The three states of the gear shifting hydraulic system are as follows:
when the D/N/R gear shifting mechanism is in a D gear, as shown in fig. 1, an electromagnetic switch valve A6 is closed, an electromagnetic switch valve B14 is opened or closed, a gear shifting valve core 7 is located at the right position, a limiting valve core 13 is located at the left position or the right position, a third oil inlet 19 is communicated with a first oil outlet 5, the third oil inlet 19 is not communicated with a second oil outlet 3, and the second oil outlet 3 is communicated with a second oil drainage port 11;
when the D/N/R gear shifting mechanism is connected with the N gear, as shown in fig. 2, the electromagnetic switch valve A6 and the electromagnetic switch valve B14 are both opened, the limiting valve core 13 is located at the right position, the gear shifting valve core 7 is located at the middle position, the oil inlet third 19 is not communicated with the oil outlet first 5 and the oil outlet second 3, and the oil outlet first 5 is communicated with the oil drainage port first 20, and the oil outlet second 3 is communicated with the oil drainage port second 11;
when the D/N/R gear shifting mechanism is in the R gear, as shown in fig. 3, the electromagnetic switch valve A6 is opened, the electromagnetic switch valve B14 is closed, the limiting valve core 13 is located at the left position, the gear shifting valve core 7 is located at the left position, the oil inlet III 19 is communicated with the oil outlet II 3, the oil inlet III 19 is not communicated with the oil outlet I5, and the oil outlet I5 is communicated with the oil drain port I20.
Built-in electron hydraulic system that shifts gears keep off the position according to the fender position that the D/N/R gearshift hung into, realize the gear shifting as follows respectively:
when the D/N/R gear shifting mechanism is in a D gear, as shown in fig. 1, an electromagnetic switch valve A6 is closed, a spring enables a gear shifting valve core 7 to be located at the right position, an oil inlet III 19 is communicated with an oil outlet I5, an oil inlet III 19 is not communicated with an oil outlet II 3, the oil outlet II 3 is communicated with an oil drainage port II 11, when oil pressure exists in a clutch control oil cavity 4, hydraulic oil enables a D gear clutch 9 to be connected, a vehicle enters the D gear, and the hydraulic oil flows back through a damping hole and an oil return port I12 to provide right acting force for the gear shifting valve core 7, so that a self-locking mechanism is formed;
at this time, no matter the electromagnetic switch valve B14 is opened or closed, the position limiting valve core 13 is located at the left position or the right position, and the position limiting function on the shift valve core 7 is not performed;
when the D/N/R gear shifting mechanism is connected with an N gear, as shown in fig. 2, an electromagnetic switch valve A6 and an electromagnetic switch valve B14 are both opened, an oil supply cavity 1 of the switch valve supplies oil to an oil inlet II 18 to enable a limit valve core 13 to move to the right, an oil supply cavity 1 of the switch valve supplies oil to an oil inlet I17 to enable a gear shifting valve core 7 to move to the left, the limit valve core 13 plays a limiting role to enable the gear shifting valve core 7 to only move to the middle position from the left, an oil inlet III 19 is not communicated with an oil outlet I5 and an oil outlet II 3, the oil outlet I5 is communicated with an oil drainage port I20, the oil outlet II 3 is communicated with an oil drainage port II 11;
because the effective area of the left end face of the limit valve core 13 is larger than that of the right end face, when oil is supplied to both end faces, the rightward acting force applied to the left end face is larger than the leftward acting force applied to the right end face, and therefore, the limit valve core 13 can move to the right.
When the D/N/R gear shifting mechanism is connected into the R gear, as shown in fig. 3, the electromagnetic switch valve B14 is closed, the electromagnetic switch valve A6 is opened, the limit valve core 13 is located at the left position, the oil supply cavity 1 of the switch valve supplies oil to the oil inlet I17 to enable the gear shifting valve core 7 to move to the left position, the oil inlet III 19 is communicated with the oil outlet II 3, the oil inlet III 19 is not communicated with the oil outlet I5, the oil outlet I5 is communicated with the oil drain opening I20, when the oil pressure exists in the clutch control oil cavity 4, hydraulic oil enables the R gear clutch 10 to be connected, a vehicle enters the R gear, and the hydraulic oil flows back through the damping hole and the oil return opening II 8 to provide a left acting force for the gear shifting.
When the gear D is switched to other gears, the returned hydraulic oil is drained through the corresponding oil return opening I12, the damping hole, the oil outlet I5 and the oil drain opening I20, and the hydraulic oil at the position of the gear D clutch 9 is drained through the corresponding oil outlet I5 and the oil drain opening I20; when the gear R is switched to other gears, the returned hydraulic oil is drained through the corresponding oil return port II 8, the damping hole, the oil outlet II 3 and the oil drain port II 11, and the hydraulic oil at the gear R clutch 10 is drained through the corresponding oil outlet II 3 and the oil drain port II 11; the damping hole controls hydraulic oil draining speed, and the disengaging speed of the clutch is reduced, namely the clutch cannot be disengaged immediately, so that reliable control of draining speed is realized when the clutch is disengaged, backstop impact is effectively buffered, and the gear shifting reliability is improved. In addition, the damping effect can be changed by changing the diameter of the damping hole.
The built-in electronic gear shifting hydraulic system of the automatic gearbox is integrated inside the hydraulic valve body assembly.
An automatic automobile continuously variable transmission assembly comprises an electronic gear shifting hydraulic system arranged in the automatic transmission.
In summary, the built-in electronic gear shifting hydraulic system and the gearbox assembly of the automatic gearbox have the following advantages:
(1) the utility model adopts a built-in electronic gear-shifting hydraulic system, adopts electronic signal control, realizes automatic D/N/R gear-shifting switching, cancels a mechanical gear-shifting rod, thereby reducing the carriage occupation space, and the space arrangement in the vehicle is more convenient, the driving automation degree is improved, and the driving requirement to the driver is lower;
(2) the utility model adopts a self-locking mechanism, when the vehicle is engaged with the gear D and the gear R, even if the switch electromagnetic valve A or the switch electromagnetic valve B fails, the vehicle can keep the original gear, the gear shifting reliability is enhanced, and the safety is improved;
(3) the damping hole is adopted at the oil return port, the oil drainage speed of the hydraulic oil is controlled through the damping hole, so that the clutch cannot be immediately disengaged, and the backstop impact is effectively buffered, so that the driving is more comfortable;
(4) the utility model can change the buffer effect by changing the diameter of the damping hole, thereby meeting the demand of mechanical, electrical and hydraulic combined control in different working condition occasions;
(5) the built-in electronic gear shifting hydraulic system can be integrated inside the hydraulic valve body assembly, and the integrated structural design is favorable for integrated processing and forming, so that the integrated structure is compact, the oil circuit design is simple, the arrangement in the gearbox is convenient, and the cost is lower;
(6) d, N, R keeps off, and the time of hanging D fender is generally the longest, the utility model discloses when hanging D fender, two solenoid valves are all unworkable, need not to supply power to the solenoid valve, and the cost is practiced thrift in the oil consumption reduction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (6)
1. A built-in electronic gear shifting hydraulic system of an automatic gearbox is characterized by comprising a D/N/R gear shifting mechanism, a gear shifting electronic control valve, an actuating mechanism, an oil supply cavity and an oil way; the D/N/R gear shifting mechanism comprises a valve body, a gear shifting valve core and a limiting valve core which are matched with the valve body to form at least one sealing section, a spring and an end plug; the inner cavity of the valve body is provided with three stages of stepped holes with different diameters, the stepped holes are gradually reduced from left to right and used for being matched with valve cores with different diameters to play a limiting role, and the valve body is provided with three oil inlets, two oil outlets, two oil return ports and two oil drainage ports; the limiting valve core is in a structure that two cylinders are connected, the effective area of the end surface of the left side is larger than that of the end surface of the right side, and the limiting valve core is provided with a left working position and a right working position; the gear shifting valve core is provided with a left working position, a middle working position and a right working position; the gear shifting electronic control valve comprises an electromagnetic switch valve A and an electromagnetic switch valve B; the actuating mechanism comprises a first actuating mechanism and a second actuating mechanism; the oil supply cavity comprises a switch valve oil supply cavity, a parking control oil cavity and a clutch control oil cavity;
the parking control oil cavity and the clutch control oil cavity are connected with a third oil inlet on the valve body after passing through a filter, the first oil outlet is connected with a first oil return port and an execution mechanism, the second oil outlet is connected with a second oil return port and the second execution mechanism, and damping holes are formed in feedback oil paths at the first oil return port and the second oil return port; the two oil drainage ports are connected with an oil tank.
2. The built-in electronic gear shifting hydraulic system of an automatic gearbox according to claim 1, characterized in that the first actuator is a D-gear clutch and the second actuator is an R-gear clutch.
3. The built-in electronic gear shifting hydraulic system of an automatic gearbox according to claim 1, wherein the gear shifting electronic control valves are all connected with a human-computer interaction platform, and the human-computer interaction platform is a button, a knob or a panel.
4. The built-in electronic shift hydraulic system of an automatic transmission according to claim 1 or 3, characterized in that the three states of the shift hydraulic system are:
when the D/N/R gear shifting mechanism is in a D gear, the electromagnetic switch valve A is closed, the gear shifting valve core is located at the right position, the third oil inlet is communicated with the first oil outlet, the third oil inlet is not communicated with the second oil outlet, and the second oil outlet is communicated with the second oil drainage port;
when the D/N/R gear shifting mechanism is hung in the N gear, the electromagnetic switch valve A and the electromagnetic switch valve B are both opened, the limiting valve core is positioned at the right position, the gear shifting valve core is positioned at the middle position, the oil inlet III is not communicated with the oil outlet I and the oil outlet II, and the oil outlet I is communicated with the oil drainage port I and the oil drainage port II;
when the D/N/R gear shifting mechanism is in the R gear, the electromagnetic switch valve A is opened, the electromagnetic switch valve B is closed, the limiting valve core is located at the left position, the gear shifting valve core is located at the left position, the oil inlet III is communicated with the oil outlet II, the oil inlet III is not communicated with the oil outlet I, and the oil outlet I is communicated with the oil drainage port I.
5. The built-in electronic shift hydraulic system of an automatic transmission according to claim 1, wherein the built-in electronic shift hydraulic system of the automatic transmission is integrated inside a hydraulic valve body assembly.
6. An automatic vehicle continuously variable transmission assembly, characterized by comprising an internally installed electronic shift hydraulic system of an automatic transmission according to any one of claims 1 to 5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921235046.6U CN210715895U (en) | 2019-08-01 | 2019-08-01 | Built-in electronic gear shifting hydraulic system of automatic gearbox and gearbox assembly |
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| CN201921235046.6U CN210715895U (en) | 2019-08-01 | 2019-08-01 | Built-in electronic gear shifting hydraulic system of automatic gearbox and gearbox assembly |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425274A (en) * | 2019-08-01 | 2019-11-08 | 泸州容大智能变速器有限公司 | A kind of automatic gear-box built-in electronic shift hydraulic system and its control method |
| CN112483560A (en) * | 2020-10-21 | 2021-03-12 | 北方汤臣传动科技有限公司 | Emergency gear shifting system of hydraulic automatic gearbox |
| CN113586713A (en) * | 2021-09-27 | 2021-11-02 | 盛瑞传动股份有限公司 | Maintenance prompting method and device for gear shifting parking mechanism |
-
2019
- 2019-08-01 CN CN201921235046.6U patent/CN210715895U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425274A (en) * | 2019-08-01 | 2019-11-08 | 泸州容大智能变速器有限公司 | A kind of automatic gear-box built-in electronic shift hydraulic system and its control method |
| CN110425274B (en) * | 2019-08-01 | 2024-04-26 | 泸州容大智能变速器有限公司 | Control method for built-in electronic gear shifting hydraulic system of automatic gearbox |
| CN112483560A (en) * | 2020-10-21 | 2021-03-12 | 北方汤臣传动科技有限公司 | Emergency gear shifting system of hydraulic automatic gearbox |
| CN113586713A (en) * | 2021-09-27 | 2021-11-02 | 盛瑞传动股份有限公司 | Maintenance prompting method and device for gear shifting parking mechanism |
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