CN103486248A - Gear selecting and shifting executing mechanism - Google Patents

Abstract

The invention provides a gear selecting and shifting executing mechanism which comprises a gear selecting and shifting shaft, a first gear selecting and shifting structure, a second gear selecting and shifting structure and five shifting forks. The first gear selecting and shifting structure and the second gear selecting and shifting structure are fixedly arranged on the gear selecting and shifting shaft and respectively comprise gear withdrawing cams and gear shifting fingers, and the five gear shifting forks are divided into two groups which can be respectively matched with the first gear selecting and shifting structure and the second gear selecting and shifting structure. The gear selecting and shifting executing mechanism has the advantages that the gear selecting and shifting mechanism is applicable to a speed changer with five synchronizers, and the axial stroke of the gear selecting and shifting shaft is shortened to the greatest extent.

Description

A gear selector actuator

technical field

The invention relates to the field of automobile transmissions, and in particular to a gear selection actuator of the automobile transmission.

Background technique

At present, in the field of automobile transmissions, the electric shift 6DCT transmissions that have been on the market or are still under research are designed with four synchronizers and a selector shift actuator with a reverse gear lock cam and a set of shift fingers to realize the shift. blocking and locking functions.

Please refer to Fig. 1, in this gear selection actuator, the odd-numbered shift forks 91, 93 and the even-numbered shift forks 92, 94 are alternately arranged. The reverse gear locking cam and shift finger assembly 95 includes a shift finger 96 disposed in the middle, and reverse gear cams 97 disposed on both sides of the shift finger. The reverse gear locking cam and the shift finger assembly 95 can move axially under the drive of the shift selector shaft 98 to select a gear, or rotate to perform a gear shift. There is a certain distance between the shift finger 96 and the reverse gear cam 97, so that when the shift finger 96 cooperates with one of the odd-numbered gear forks, that is, when the gear is engaged, the other odd-numbered gear fork is limited by the reverse gear cam 97 to the reverse position. Similarly, when the shift finger cooperates with one of the even-numbered gear forks, that is, when the gear is engaged, the other even-numbered gear fork is restricted in the reverse gear position by the reverse gear cam. Thereby making two shift forks of odd-numbered gear and two shift forks of even-numbered gear cannot be put into gear simultaneously.

At present, the industry has begun to study a transmission with five synchronizers, which can effectively shorten the axial length of the transmission shaft system, thereby shortening the axial length of the transmission. Apparently, the existing gear selection actuator applied to a transmission with four synchronizers is not suitable for a transmission with five synchronizers, and cannot be directly applied to a transmission with five synchronizers.

Contents of the invention

In view of the above problems, the object of the present invention is to provide a gear selection actuator suitable for a transmission with five synchronizers.

A gear selection actuator of the present invention includes a gear selection shaft, and the gear selection actuator also includes a first gear selection structure and a second gear selection structure fixedly arranged on the gear selection shaft , and five shift fork forks, the first selected shift structure and the second selected shift structure respectively include a reverse gear cam and a shift finger, and the five shift fork forks are arranged to be respectively compatible with the Two groups of the first selected shifting structure and the second selected shifting structure.

In one embodiment of the present invention, the gap between the reverse gear cam and the shift finger adjacent to the first selected shift structure, and the reverse gear cam and the shift finger adjacent to the second selected shift structure The gap between the fingers is twice the gap between the adjacent forks of each group of forks.

In one embodiment of the present invention, the aforementioned five shift fork forks include an odd-numbered shift fork and an even-numbered shift fork, and when one of the shift fingers is located at one of the odd-numbered shift forks, Other odd-numbered shift fork forks are backed by the reverse gear cam; when one of the shift fingers is located at one of the even-numbered shift fork forks, other even-numbered shift fork forks are moved by the reverse gear Cam backs off.

In one embodiment of the present invention, the aforesaid first selector shift structure includes three reverse gear cams and one shift finger.

In one embodiment of the present invention, two of the three reverse cams of the aforementioned first selector shift structure are located on one side of the shift finger, and the other reverse cam is located on the other side of the shift finger. side.

In one embodiment of the present invention, the aforementioned second selector shift structure includes two reverse gear cams and one shift finger.

In one embodiment of the present invention, the two reverse gear cams of the aforementioned second selector shift structure are located on the same side of the shift finger.

In one embodiment of the present invention, the aforementioned five shift fork ports include the reverse gear shift fork port, the fifth gear shift fork port, the second/sixth gear shift fork port, the first/third gear shift fork port, And the four gear shift fork mouth.

In one embodiment of the present invention, the aforementioned reverse gear shift fork, the second/sixth gear shift fork and the fifth gear shift fork are a group, and cooperate with the first gear selection structure.

In one embodiment of the present invention, the first/third gear shift fork and the fourth gear shift fork are a group and cooperate with the second gear selection structure.

The beneficial effect of the present invention is that the gear selection and shift actuator adopted in the embodiment of the invention is suitable for a transmission with five synchronizers, and the axial stroke of the gear selection shaft is the shortest.

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the following specific examples, and with the accompanying drawings, are described in detail as follows.

Description of drawings

Fig. 1 is a schematic structural view of a preferred embodiment of an existing gear selection actuator.

Fig. 2 is a schematic structural view of a preferred embodiment of the gear selection actuator of the present invention.

Fig. 3 is a structural schematic diagram of the first gear selection structure of the preferred embodiment of the gear selection actuator of the present invention.

Fig. 4 is a structural schematic diagram of the second gear selection structure of the preferred embodiment of the gear selection actuator of the present invention.

Fig. 5 to Fig. 9 are schematic diagrams of the five shifting states of the preferred embodiment of the shifting actuator of the present invention.

Detailed ways

In order to further explain the technical means and effects that the present invention takes to achieve the intended purpose of the invention, below in conjunction with the accompanying drawings and preferred embodiments, the specific implementation, structure, characteristics and features of the gear selection actuator proposed according to the present invention will be described. Efficacy, detailed as follows:

The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of preferred embodiments with reference to the drawings. Through the description of specific implementation methods, the technical means and effects of the present invention to achieve the intended purpose can be understood more deeply and specifically, but the attached drawings are only for reference and description, and are not used to explain the present invention limit.

Referring to Fig. 2, the gear selection actuator of the embodiment of the present invention includes a gear selection shaft 1, a first gear selection structure 11 and a second gear selection structure 12 arranged on the gear selection shaft 1, and The reverse gear fork opening 4, the fifth gear fork opening 5, and the second/sixth gear shifting fork are arranged on the periphery of the shifting shaft 1 and interact with the first shifting structure 11 or the second shifting structure 12 respectively. The fork opening 6, the first/third gear shift fork opening 7, and the fourth gear shift fork opening 8.

The selection and shift shaft 1 has an axis (not shown in the figure), and the selection and shift shaft 1 can move along its axis under the drive of the motor (not shown in the figure), so as to perform gear selection. Driven to rotate with its axis as the axis, so as to perform gear shifting action.

Please refer to FIG. 3 , the first shifting structure 11 includes a substantially cylindrical sleeve portion 110 , and is arranged on the sleeve portion 110 . The reverse gear cam 112 and a shift finger 114 are arranged along the axial direction of the vertical sleeve portion 110 to extend in one direction. The extension directions of the three reverse gear cams 112 and one shift finger 114 on the sleeve part 110 are the same, and the gaps between adjacent elements among them are also the same. Two of the three reverse cams 112 are located on one side of the shift finger 114 and the other reverse cam 112 is located on the other side of the shift finger 114 .

Please refer to FIG. 4 , the second shifting structure 12 includes a substantially cylindrical sleeve portion 120 , and is arranged on the sleeve portion 120 . The gear shifting cam 122 and a shifting finger 124 extending in one direction along the axial direction of the vertical shaft sleeve portion 120 . The two reverse gear cams 122 and one shift finger 124 extend in the same direction on the sleeve portion 120 , and the distances between them are also the same. The two reverse cams 122 are located on the same side of the shift finger 124 .

The first selectable shift structure 11 and the second selectable shift structure 12 are fixed on the selectable shift shaft 1 at a certain distance, and can rotate together with the selectable shift shaft 1 or move axially, and the first selectable shift structure 11 and The setting angles of the second shifting structure 12 on the shifting shaft 1 are the same. The extension axes of the reverse gear cams 122 and the shift fingers 124 are in the same plane.

Reverse gear shift fork port 4, fifth gear shift fork port 5, second/sixth shift fork port 6, first/third shift fork port 7, and fourth shift fork port 8 are parallel to each other and perpendicular to the selection The axes of the shift shaft 1 are set in sequence, and each fork is connected to a corresponding shift fork (not shown in the figure). Each corresponding shift fork is respectively used to toggle each synchronizer of the transmission with five synchronizers applying the gear selection actuator of the present invention. Reverse gear shift fork port 4, fifth gear shift fork port 5, second/sixth shift fork port 6, first/third gear shift fork port 7, and fourth gear shift fork port 8 are divided into two groups. Reverse gear shift fork mouth 4, fifth gear shift fork mouth 5 and second/sixth gear shift fork mouth 6 form a group, and cooperate with the first shifting structure 11; first/third gear shift fork mouth 7, And the fourth gear shift fork mouth 8 is a group, cooperates with the second shifting structure 12. In the two shift fork fork groups, the gaps between adjacent forks are equal, and the gap between the two adjacent elements of the reverse gear cam 112 and the shift finger 114 of the first shifting structure 11 Twice the gap between adjacent prongs. Likewise, the gap between two adjacent elements of the reverse gear cam 122 and the shift finger 124 of the second selected shifting structure 12 is twice the gap between each adjacent fork.

Fig. 5 to Fig. 9 show five shifting states of the gear selection and shifting actuator of the embodiment of the present invention.

In Fig. 5, the shift finger 124 of the second gear selection structure 12 acts on the fourth gear fork fork 8, while the two reverse gear cams 112 on the left side of the first gear selection structure 11 act on the reverse gear respectively. On the fork port 4 and the second/sixth gear shift fork port 6.

In Fig. 6, the shift finger 124 of the second gear selection structure 12 acts on the fork opening 7 of the first/third gear, while the reverse gear cam 112 on the left side of the first gear selection structure 11 acts on the fifth gear dial. Fork on 5.

In Fig. 7, the shift finger 114 of the first shifting structure 11 acts on the second/sixth gear shift fork fork 6, and the reverse gear cam 112 on the left side of the shifting finger 114 of the first shifting structure 11 acts on On the fork opening 4 of the reverse gear, the reverse gear cam 122 in the middle of the second shifting structure 12 acts on the fork opening 8 of the fourth gear.

In Fig. 8, the shift finger 114 of the first gear selection structure 11 acts on the fork opening 5 of the fifth gear fork, while the reverse gear cam 122 in the middle of the second gear selection structure 12 acts on the first/third gear fork On fork 7.

In Fig. 9, the shift finger 114 of the first gear selection structure 11 acts on the reverse gear fork fork 4, and the rightmost reverse gear cam 112 of the first gear selection structure 11 acts on the second/sixth gear On the shift fork fork 6 , the reverse gear cam 122 on the rightmost side of the second shifting structure 12 acts on the fourth gear shift fork fork 8 .

That is, the five shift states of the gear selection actuator of the embodiment of the present invention shown in Fig. 5 to Fig. 9 are that the gear selection axis of the gear selection actuator is from the right end of the gear selection actuator to the left end shaft different states of movement.

In this way, the gear selection and shifting actuator of the embodiment of the present invention can meet the functional characteristics that in a DCT with five synchronizers, the gears controlled by different clutches can be engaged at the same time, and the gears controlled by the same clutch cannot be engaged at the same time. In a dual clutch transmission, one clutch controls the odd gears and the other clutch controls the even gears (in this embodiment, reverse is incorporated into the even gears). When the shift fingers 114 or 124 are in odd gears, the shift forks of other odd gears will be locked and reversed by the gear cam 112 or 122; when the shift fingers 114 or 124 are in the shift forks of even gears , other even-numbered shifting fork mouths also all can be locked back gear cam 112 or 122 back gears, reach the locking and the back gear function of other gear positions controlled by the same clutch. And when the shift finger 114 or 124 is in the gear controlled by one of the clutches, the shift fork fork of the other clutch controlled gear does not lock the reverse gear cam, so that the gears controlled by different clutches can be hung in at the same time function. At the same time, when the gear selection actuator of the embodiment of the present invention is used to perform the gear selection operation, the axial stroke of the gear selection shaft 1 is the shortest.

Of course, the order of arrangement of the components of the gear selection and shifting actuator in the present invention is not limited thereto, and it can also be arranged in other orders, and the reverse gear can also be incorporated into odd gears, as long as the shift finger 114 or 124 is in the odd gear position At this time, the shift fork openings of other odd gears will be locked and reversed by the gear cam 112 or 122; The backstop cam 112 or 122 can be backed off.

To sum up, the gear selection and shift actuator adopted in the embodiment of the present invention is suitable for a transmission with five synchronizers, and the axial stroke of the gear selection shaft 1 is the shortest.

The above description is only an embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with the embodiment, it is not intended to limit the present invention. Without departing from the scope of the technical solution of the present invention, when the technical content disclosed above can be used to make some changes or be modified into equivalent embodiments with equivalent changes, but if it does not deviate from the technical solution of the present invention, the technical essence of the present invention can be used for the above Any simple modifications, equivalent changes and modifications made in the embodiments still fall within the scope of the technical solution of the present invention.

Claims (10)

1. a shift-selecting and changing actuating mechanism, comprise shifting axle (1), it is characterized in that, described shift-selecting and changing actuating mechanism also comprises the first shifting structure (11) and the second shifting structure (12) be fixedly installed on described shifting axle (1), and five shift fork prongs (4, 5, 6, 7, 8), described the first shifting structure (11) and described the second shifting structure (12) comprise respectively moves back gear cam (112, 122) and gearshift refer to (114, 124), described five shift fork prongs (4, 5, 6, 7, 8) be arranged to described the first shifting structure (11) and described the second shifting structure (12), to coordinate respectively two groups.

2. shift-selecting and changing actuating mechanism as claimed in claim 1, it is characterized in that, described the first shifting structure (11) is adjacent moves back gear cam (112) and gearshift refers to the gap between (114), and adjacent the moving back of described the second shifting structure (12) keeps off cam (122) and gearshift refers to the gap between (124), is the twice of respectively organizing gap between each shift fork prong adjacent in shift fork prong (4,5,6,7,8).

3. shift-selecting and changing actuating mechanism as claimed in claim 2, it is characterized in that, described five shift fork prongs (4,5,6,7,8) comprise odd number gear shift fork prong (5,7) and even number gear shift fork prong (4,6,8), while referring to that in described gearshift one of (114,124) are positioned at one of odd number gear shift fork prong, other each odd number gear shift fork prong is moved back gear by the described gear cam that moves back; While referring to that in described gearshift one of (114,124) are positioned at one of even number gear shift fork prong, other each even number gear shift fork prong is moved back gear by the described gear cam that moves back.

4. shift-selecting and changing actuating mechanism as claimed in claim 3, is characterized in that, described the first shifting structure (11) comprises that three are moved back gear cam (112) and a gearshift and refer to (114).

5. shift-selecting and changing actuating mechanism as claimed in claim 4, it is characterized in that, three two of moving back in gear cam (112) of described the first shifting structure (11) are positioned at the side that described gearshift refers to (114), and another moves back gear cam (112) and is positioned at the opposite side that described gearshift refers to (114).

6. shift-selecting and changing actuating mechanism as claimed in claim 3, is characterized in that, described the second shifting structure (12) comprises that two are moved back gear cam (122) and a gearshift and refer to (124).

7. shift-selecting and changing actuating mechanism as claimed in claim 6, is characterized in that, two of described the second shifting structure (12) are moved back gear cam (122) and are positioned at the same side that described gearshift refers to (124).

8. shift-selecting and changing actuating mechanism as claimed in claim 3, it is characterized in that, described five shift fork prongs comprise back fork prong (4), five gear shift fork prongs (5), two/six gear shift fork prongs (6), one/tri-gear shift fork prong (7), and four gear shift fork prongs (8).

9. shift-selecting and changing actuating mechanism as claimed in claim 8, is characterized in that, described back fork prong (4), two/six gear shift fork prongs (5) are one group with five gear shift fork prongs (6), and coordinate with described the first shifting structure (11).

10. shift-selecting and changing actuating mechanism as claimed in claim 8, is characterized in that, described one/tri-gear shift fork prong (7), and four gear shift fork prongs (8) are one group, and coordinate with described the second shifting structure (12).

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