Gear shifting executing mechanism of four-gear gearbox

Abstract

The utility model relates to the technical field of gearboxes, in particular to a gear shifting executing mechanism of a four-gear gearbox, which is simple in structure, large in gear shifting force, strong in system rigidity, convenient to install, low in cost, safe and reliable. In the gear shifting executing mechanism of the four-gear gearbox, a shell is provided with a first gear shifting system cavity and a second gear shifting system cavity which are independent, and the first gear shifting system cavity and the second gear shifting system cavity are symmetrically distributed and are used for arranging a 1 / 2 gear shifting system and a 3 / 4 gear shifting system correspondingly; the gear shifting system comprises a gear shifting motor, the gear shifting motor is connected with a gear shifting worm, and the gear shifting worm is in transmission connection with a gear shifting sector gear; the gear shifting sector gear is fixed to the gear shifting shaft through a first rolling pin, and the gear shifting block is fixed to the gear shifting shaft through a second rolling pin. The gear shifting shaft is provided with a gear shifting angle sensor.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, and in particular to a shift actuator for a four-speed gearbox. Background Technology

[0002] Currently, most domestic 4-speed AMT shift actuators are the same as those of traditional manual transmissions. They have a selection shaft and a shift shaft, and are arranged with an XY axis. They share a shift paddle for selection and shifting. When shifting between two gears on different shift shafts, selection is required before shifting, which increases the power interruption time during shifting and thus affects driving comfort and fuel economy.

[0003] Therefore, how to provide a four-speed gearbox shifting actuator that is simple in structure, has a large shifting force, strong system rigidity, is easy to install, has low cost, and is safe and reliable has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this utility model is to provide a four-speed gearbox shifting actuator, which has a simple structure, large shifting force, strong system rigidity, convenient installation, low cost, and is safe and reliable.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A four-speed gearbox shift actuator includes: a housing, wherein the housing is provided with an independent first shift system cavity and a second shift system cavity, and the first shift system cavity and the second shift system cavity are symmetrically distributed and are respectively used to arrange a 1 / 2 gear shift system and a 3 / 4 gear shift system;

[0007] The 1 / 2 gear shifting system includes: a 1 / 2 gear shifting motor, the 1 / 2 gear shifting motor being connected to a 1 / 2 gear shifting worm gear, and the 1 / 2 gear shifting worm gear being driven by a 1 / 2 gear shifting sector gear; the 1 / 2 gear shifting sector gear being fixed to a 1 / 2 gear shifting shaft by a first 1 / 2 gearing pin, and a 1 / 2 gear shifting paddle being fixed to the 1 / 2 gear shifting shaft by a second 1 / 2 gearing pin; and a 1 / 2 gear shifting angle sensor being mounted on the 1 / 2 gear shifting shaft.

[0008] The 3 / 4 gear shifting system includes: a 3 / 4 gear shifting motor, the 3 / 4 gear shifting motor being connected to a 3 / 4 gear shifting worm gear, and the 3 / 4 gear shifting worm gear being driven by a 3 / 4 gear shifting sector gear; the 3 / 4 gear shifting sector gear being fixed to a 3 / 4 gear shifting shaft by a first 3 / 4 gearing pin, and a 3 / 4 gear shifting paddle being fixed to the 3 / 4 gear shifting shaft by a second 3 / 4 gearing pin; and a 3 / 4 gear shifting angle sensor being mounted on the 3 / 4 gear shifting shaft.

[0009] The 1 / 2 gear shift worm is installed in the first shift system cavity of the housing through the first shift worm bearing of the 1 / 2 gear and the second shift worm bearing of the 1 / 2 gear, and is axially limited by the shoulder of the housing, the 1 / 2 gear bushing, and the 1 / 2 gear pressure plate, and is sealed with a 1 / 2 gear O-ring.

[0010] Specifically, the 1 / 2 gear shift shaft is arranged in the first shift system cavity in the housing via the 1 / 2 gear first shift bearing and the 1 / 2 gear second shift bearing, and is equipped with a 1 / 2 gear axial retaining ring.

[0011] The 3 / 4 gear shift worm is installed in the second shift system cavity of the housing through the first 3 / 4 gear shift worm bearing and the second 3 / 4 gear shift worm bearing, and is axially limited by the shoulder of the housing, the 3 / 4 gear bushing, and the 3 / 4 gear pressure plate, and is sealed with a 3 / 4 gear O-ring.

[0012] Specifically, the 3 / 4 gear shift shaft is arranged in the second shift system cavity in the housing via a 3 / 4 gear first shift bearing and a 3 / 4 gear second shift bearing, and is fitted with a 3 / 4 gear axial retaining ring.

[0013] Compared with the prior art, the four-speed gearbox shifting actuator of this utility model has the following advantages:

[0014] The four-speed gearbox shifting actuator provided by this utility model adopts an independent YY axis arrangement and has an independent shifting system cavity in the housing. It also uses a shifting worm gear and shifting sector gear transmission structure. Therefore, it not only has a simple structure and few parts, and a reliable system, but also has a small size and light weight, and can be arranged with a large speed ratio to meet the requirements of large shifting force. In addition, since the shifting sector gear and shifting paddle are mounted on the same shifting shaft by a pin and supported by shifting bearings on both sides, the system has high rigidity and the pin connection has high strength and no gap, thus effectively ensuring the operational stability of the system. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the four-speed gearbox shifting actuator provided in an embodiment of the present utility model;

[0016] Figure 2 A first-view cross-sectional structural schematic diagram of the four-speed gearbox shifting actuator provided in an embodiment of this utility model;

[0017] Figure 3 This is a second-view cross-sectional structural schematic diagram of the four-speed gearbox shifting actuator provided in an embodiment of the present utility model.

[0018] Figure label:

[0019] 30 - Housing; 31 - First shift system cavity; 32 - Second shift system cavity;

[0020] 11. 1 / 2 gear shift motor; 12. 1 / 2 gear first shift worm bearing; 13. 1 / 2 gear shift worm; 14. 1 / 2 gear second shift worm bearing; 15. 1 / 2 gear shift sector gear; 16. 1 / 2 gear shift angle sensor; 17. 1 / 2 gear axial retaining ring; 18. 1 / 2 gear first shift bearing; 19. 1 / 2 gear shift shaft; 110. 1 / 2 gear first coiled pin; 111. 1 / 2 gear second coiled pin; 112. 1 / 2 gear shift lever; 113. 1 / 2 gear second shift shaft; 114. 1 / 2 gear bushing; 115. 1 / 2 gear O-ring; 116. 1 / 2 gear pressure plate;

[0021] 21. 3 / 4 gear shift motor; 22. 3 / 4 gear first shift worm bearing; 23. 3 / 4 gear shift worm; 24. 3 / 4 gear second shift worm bearing; 25. 3 / 4 gear shift sector gear; 26. 3 / 4 gear shift angle sensor; 27. 3 / 4 gear axial retaining ring; 28. 3 / 4 gear first shift bearing; 29. ​​3 / 4 gear shift shaft; 210. 3 / 4 gear first coiled pin; 211. 3 / 4 gear second coiled pin; 212. 3 / 4 gear shift lever; 213. 3 / 4 gear second shift shaft; 214. 3 / 4 gear bushing; 215. 3 / 4 gear O-ring; 216. 3 / 4 gear pressure plate. Detailed Implementation

[0022] For ease of understanding, the four-speed gearbox shifting actuator provided in the embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] This utility model embodiment provides a four-speed gearbox shifting actuator, such as Figures 1-3 As shown, it includes: a housing 30, which is provided with an independent first shift system cavity 31 and a second shift system cavity 32, and the first shift system cavity 31 and the second shift system cavity 32 are symmetrically distributed and are respectively used to arrange a 1 / 2 gear shift system and a 3 / 4 gear shift system;

[0024] The 1 / 2 gear shifting system includes: a 1 / 2 gear shifting motor 11, which is connected to a 1 / 2 gear shifting worm gear 13, and the 1 / 2 gear shifting worm gear 13 is drivenly connected to a 1 / 2 gear shifting sector gear 15; the 1 / 2 gear shifting sector gear 15 is fixed to a 1 / 2 gear shifting shaft 19 by a first 1 / 2 gearing coil pin 110, and a 1 / 2 gear shifting paddle 112 is fixed to the 1 / 2 gear shifting shaft 19 by a second 1 / 2 gearing coil pin 111; the 1 / 2 gear shifting shaft 19 is equipped with a 1 / 2 gear shifting angle sensor 16;

[0025] The 3 / 4 gear shifting system includes: a 3 / 4 gear shifting motor 21, which is connected to a 3 / 4 gear shifting worm gear 23, and the 3 / 4 gear shifting worm gear 23 is drivenly connected to a 3 / 4 gear shifting sector gear 25; the 3 / 4 gear shifting sector gear 25 is fixed to a 3 / 4 gear shifting shaft 29 by a first 3 / 4 gearing coil pin 210, and a 3 / 4 gear shifting paddle 212 is fixed to the 3 / 4 gear shifting shaft 29 by a second 3 / 4 gearing coil pin 211; the 3 / 4 gear shifting shaft 29 is equipped with a 3 / 4 gear shifting angle sensor 26.

[0026] Compared with the prior art, the four-speed gearbox shifting actuator described in this embodiment of the invention has the following advantages:

[0027] The four-speed gearbox shifting actuator provided in this embodiment of the utility model adopts an independent YY axis arrangement and has an independent shifting system cavity in the housing. It also uses a shifting worm gear and shifting sector gear transmission structure. Therefore, it not only has a simple structure and few parts, and a reliable system, but also has a small size and light weight, and can be arranged with a large speed ratio to meet the requirements of large shifting force. In addition, since the shifting sector gear and shifting paddle are mounted on the same shifting shaft by a pin and supported by shifting bearings on both sides, the system has high rigidity and the pin connection has high strength and no gap, thus effectively ensuring the operational stability of the system.

[0028] Among them, such as Figures 1-3 As shown, the aforementioned 1 / 2 gear shift worm 13 can be installed in the first shift system cavity 31 of the housing 30 through the 1 / 2 gear first shift worm bearing 12 and the 1 / 2 gear second shift worm bearing 14, and the axial direction can be limited by the shaft shoulder of the housing 30, the 1 / 2 gear bushing 114, and the 1 / 2 gear pressure plate 116, and can be sealed with a 1 / 2 gear O-ring 115.

[0029] Specifically, such as Figures 1-3 As shown, the aforementioned 1 / 2 gear shift shaft 19 can be mounted in the first shift system cavity 31 in the housing 30 via the 1 / 2 gear first shift bearing 18 and the 1 / 2 gear second shift shaft 113, and can be fitted with a 1 / 2 gear axial retaining ring 17.

[0030] Among them, such as Figures 1-3 As shown, the aforementioned 3 / 4 gear shift worm 23 can be installed in the second shift system cavity 32 of the housing 30 through the 3 / 4 gear first shift worm bearing 22 and the 3 / 4 gear second shift worm bearing 24, and the axial direction can be limited by the shaft shoulder of the housing 30, the 3 / 4 gear bushing 214, and the 3 / 4 gear pressure plate 216, and can be sealed with a 3 / 4 gear O-ring 215.

[0031] Specifically, such as Figures 1-3As shown, the aforementioned 3 / 4 gear shift shaft 29 can be arranged in the second shift system cavity 32 in the housing 30 via the 3 / 4 gear first shift bearing 28 and the 3 / 4 gear second shift bearing 213, and can be fitted with a 3 / 4 gear axial retaining ring 27.

[0032] The shifting principle of the four-speed gearbox shifting actuator provided in this embodiment of the present invention will be described in detail below with reference to the accompanying drawings:

[0033] like Figures 1-3 As shown, the working principle of the 1 / 2 gear shifting system is as follows: The 1 / 2 gear shifting motor 11 rotates, driving the 1 / 2 gear shifting worm gear 13. The 1 / 2 gear shifting worm gear 13 drives the 1 / 2 gear shifting sector gear 15 to rotate through the gear pair. The 1 / 2 gear shifting sector gear 15 drives the 1 / 2 gear shifting shaft 19 to rotate through the first 1 / 2 gearing coil pin 110. The 1 / 2 gear shifting shaft 19 drives the 1 / 2 gear shifting paddle 112 to rotate through the second 1 / 2 gearing coil pin 111. The rotation of the 1 / 2 gear shifting paddle 112 drives the movement of the shifting system inside the gearbox to complete the shifting. At the same time, the 1 / 2 gear shifting angle sensor 16 transmits the information to the TCU to determine the shifting position.

[0034] like Figures 1-3 As shown, the working principle of the 3 / 4 gear shifting system is as follows: The 3 / 4 gear shifting motor 21 rotates, driving the 3 / 4 gear shifting worm 23. The 3 / 4 gear shifting worm 23 drives the 3 / 4 gear shifting sector gear 25 to rotate through the gear pair. The 3 / 4 gear shifting sector gear 25 drives the 3 / 4 gear shifting shaft 29 to rotate through the first 3 / 4 gearing coil pin 210. The 3 / 4 gear shifting shaft 29 drives the 3 / 4 gear shifting paddle 212 to rotate through the second 3 / 4 gearing coil pin 211. The rotation of the 3 / 4 gear shifting paddle 212 drives the movement of the shifting system inside the gearbox to complete the shift. At the same time, the 3 / 4 gear shifting angle sensor 26 transmits the information to the TCU to determine the shifting position.

[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A shift actuator for a four-speed gearbox, characterized in that, include: The housing has an independent first shift system cavity and a second shift system cavity, which are symmetrically distributed and used to house a 1 / 2 gear shift system and a 3 / 4 gear shift system, respectively. The 1 / 2 gear shifting system includes: a 1 / 2 gear shifting motor, the 1 / 2 gear shifting motor being connected to a 1 / 2 gear shifting worm gear, and the 1 / 2 gear shifting worm gear being driven by a 1 / 2 gear shifting sector gear; the 1 / 2 gear shifting sector gear being fixed to a 1 / 2 gear shifting shaft by a first 1 / 2 gearing pin, and a 1 / 2 gear shifting paddle being fixed to the 1 / 2 gear shifting shaft by a second 1 / 2 gearing pin; and a 1 / 2 gear shifting angle sensor being mounted on the 1 / 2 gear shifting shaft. The 3 / 4 gear shifting system includes: a 3 / 4 gear shifting motor, the 3 / 4 gear shifting motor being connected to a 3 / 4 gear shifting worm gear, and the 3 / 4 gear shifting worm gear being driven by a 3 / 4 gear shifting sector gear; the 3 / 4 gear shifting sector gear being fixed to a 3 / 4 gear shifting shaft by a first 3 / 4 gearing pin, and a 3 / 4 gear shifting paddle being fixed to the 3 / 4 gear shifting shaft by a second 3 / 4 gearing pin; and a 3 / 4 gear shifting angle sensor being mounted on the 3 / 4 gear shifting shaft.

2. The four-speed gearbox shifting actuator according to claim 1, characterized in that, The 1 / 2 gear shift worm is installed in the first shift system cavity of the housing through the 1 / 2 gear first shift worm bearing and the 1 / 2 gear second shift worm bearing, and is axially limited by the housing shoulder, the 1 / 2 gear bushing, and the 1 / 2 gear pressure plate, and is sealed with a 1 / 2 gear O-ring.

3. The four-speed gearbox shifting actuator according to claim 1 or 2, characterized in that, The 1 / 2 gear shift shaft is arranged in the first shift system cavity in the housing through the 1 / 2 gear first shift bearing and the 1 / 2 gear second shift bearing, and is equipped with a 1 / 2 gear axial retaining ring.

4. The four-speed gearbox shifting actuator according to claim 1, characterized in that, The 3 / 4 gear shift worm is installed in the second shift system cavity of the housing through the first 3 / 4 gear shift worm bearing and the second 3 / 4 gear shift worm bearing, and is axially limited by the shoulder of the housing, the 3 / 4 gear bushing, and the 3 / 4 gear pressure plate, and is sealed with a 3 / 4 gear O-ring.

5. The four-speed gearbox shifting actuator according to claim 1 or 4, characterized in that, The 3 / 4 gear shift shaft is arranged in the second shift system cavity in the housing via the 3 / 4 gear first shift bearing and the 3 / 4 gear second shift bearing, and is equipped with a 3 / 4 gear axial retaining ring.

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