Pull plate type control mechanism of transmission

Abstract

The utility model relates to the field of gearboxes, in particular to a transmission pulling plate type control mechanism which comprises a gear shifting block, a gear shifting pulling plate, a pulling plate front support, a pulling plate rear support, an interlocking block and an arc-shaped gear shifting fork. The gear shifting fork is matched with a shifting fork matching groove in the gear shifting pulling plate, the interlocking block is located in a guide groove of the gear shifting pulling plate, the gear shifting shifting block is arranged in the guide groove of the gear shifting pulling plate in a matched mode, and the shifting block end of the gear shifting shifting block is located in the interlocking block. The interlocking block is embedded into the guide groove of the gear shifting pull plate, the gear shifting block is limited through the interlocking block, the gear shifting mechanism has the advantages of being small in occupied space, light in weight, low in cost and convenient to mount and dismount, meanwhile, the gear shifting function can be achieved, and light weight of an automobile is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of gearbox, concretely to a gear box pull plate type operating mechanism. BACKGROUND

[0002] The gearbox shift operating mechanism is the key part of the gearbox, and directly reflects the shift performance of the gearbox. At present, the gearbox operating mechanism usually adopts the shift fork shaft type operating mechanism, which is generally composed of shift guide block, shift fork shaft, shift fork, fixed bolt and other parts. The shift fork shaft is supported at both ends by the shell. When performing the shift operation, the shift knob drives the shift fork shaft and the shift fork through the shift guide block, and then drives the synchronizer to realize the shift. This shift operating mechanism has the advantages of small deformation and large bearing capacity, but the shift is relatively heavy, which does not meet the requirement of light shift of light-duty transmission. In addition, since the shift fork shaft and the shift fork are two separate parts, they are often connected by bolts. This not only increases the installation process and raises the production cost, but also needs to consider the strength of the bolt in addition to ensuring that each part meets the strength requirement.

[0003] At present, the gearbox operating mechanism usually adopts the shift fork shaft type operating mechanism, which is generally composed of shift guide block, shift fork shaft, shift fork, fixed bolt and other parts. The shift fork shaft is supported at both ends by the shell. When performing the shift operation, the shift knob drives the shift fork shaft and the shift fork through the shift guide block, and then drives the synchronizer to realize the shift. For example, CN203926735U discloses a pull plate type operating mechanism, which includes a circular arc-shaped shift fork and a shift pull plate. The shift pull plate is provided with a shift pull plate protrusion having a hinge hole at the bottom. The top end of the shift fork is provided with a shift fork protrusion having a threaded hole, which can be fixed with the shift pull plate protrusion. The hinge hole of the shift pull plate protrusion and the threaded hole of the shift fork protrusion are provided with a shift fork positioning bolt connecting the shift pull plate and the shift fork. The front and rear sides of the shift pull plate are respectively provided with a front pressing plate and a rear pressing plate supporting the shift pull plate.

[0004] This shift operating mechanism has the advantages of small deformation and large bearing capacity, but the shift is relatively heavy, which does not meet the requirement of light shift of light-duty transmission. In addition, since the shift fork shaft and the shift fork are two separate parts, they are often connected by bolts. This not only increases the installation process and raises the production cost, but also needs to consider the strength of the bolt in addition to ensuring that each part meets the strength requirement. SUMMARY

[0005] In view of the problem that the shift fork shaft and the shift fork are connected by bolts in the prior art, which is complicated to install and does not meet the requirement of light shift of light-duty transmission, the utility model provides a gear box pull plate type operating mechanism.

[0006] The utility model is realized through the following technical solutions:

[0007] The application discloses a transmission pull plate type operating mechanism, which comprises a shift knob, a shift pull plate, a pull plate front support, a pull plate rear support, an interlocking block and an arc-shaped shift fork.

[0008] Preferably, the shift pull plate comprises an independent first gear pull plate, a second gear pull plate and a third gear pull plate, and the guide groove comprises a first gear pull plate guide groove, a second gear pull plate guide groove and a third gear pull plate guide groove, and is corresponded to the first gear pull plate, the second gear pull plate and the third gear pull plate respectively.

[0009] Preferably, the first gear pull plate is provided with a first first gear fork matching groove, a first second gear fork matching groove and a first third gear fork matching groove; the second gear pull plate is provided with a second first gear fork matching groove, a second second gear fork matching groove and a second third gear fork matching groove; and the third gear pull plate is provided with a third first gear fork matching groove and a third second gear fork matching groove.

[0010] Preferably, the length of the first first gear fork matching groove is equal to the length of the second first gear fork matching groove; and the length of the second first gear fork matching groove is greater than the length of the third first gear fork matching groove.

[0011] Preferably, the length of the third second gear fork matching groove is equal to the length of the first second gear fork matching groove; and the length of the first second gear fork matching groove is greater than the length of the second second gear fork matching groove.

[0012] Preferably, the length of the second third gear fork matching groove is greater than the length of the first third gear fork matching groove.

[0013] Preferably, the pull plate front support and the pull plate rear support are respectively provided with a first rectangular groove and a second rectangular groove, the pull plate front support and the pull plate rear support are fixedly installed on a shell, one end of the pull plate is arranged in the first rectangular groove, and the other end of the pull plate is arranged in the second rectangular groove of the pull plate rear support.

[0014] Preferably, the shift knob is provided with a pin hole and a mounting hole, a transverse shift rod passes through the mounting hole, and a fixed pin passes through the pin hole and is fixedly connected with the shift knob.

[0015] Preferably, the shift fork comprises a connected fork leg, an arc-shaped plate and a fork end, the fork leg is provided with a supporting hole, the fork is fixed on a transmission shell through the supporting hole by means of a pin, and the fork end is matched with the fork matching groove on the pull plate.

[0016] Compared with the prior art, the transmission pull plate type operating mechanism has the following beneficial effects:

[0017] The utility model discloses a kind of interlock blocks embedded in the guide groove of gearshift pull plate in transmission pull plate type operating mechanism, and gearshift knob is limited by interlock block. When shifting, gearshift knob drives the axial movement of the pull plate of required gear by pull plate guide groove, since the knob of shift fork is fixed in shift fork cooperation groove, and shift fork is fixed on transmission housing by left and right two pins, using lever principle, by pull plate poking shift fork knob, the prong of the lower part of shift fork is moved, drives synchronizer sliding sleeve, realizes gear shifting function.The pull plate proposed in the utility model is operating mechanism with the advantages of small space occupation, light weight, low cost, convenient installation and disassembly, can meet gear shifting function simultaneously, and it is beneficial to automobile light weight.

[0018] Further, gearshift pull plate is divided into independent first gear, second and third gear and fourth and fifth gear pull plate, respectively equipped with special guide groove and shift fork cooperation groove, and different length grooves are designed to match different gear shifting requirements.

[0019] Further, gearshift knob is connected by transverse gearshift lever and fixed pin, bolt is fixed in housing by penetrating support hole, and the rigidity connection of knob and gearshift lever is ensured by double fixing points formed by pin hole and mounting hole combination, to avoid loosening. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the assembly schematic drawing of pull plate type operating mechanism assembly provided by the utility model;

[0021] Figure 2 It is the structure schematic drawing of fourth and fifth gear pull plate of pull plate type operating mechanism provided by the utility model;

[0022] Figure 3 It is the structure schematic drawing of first gear pull plate of pull plate type operating mechanism provided by the utility model;

[0023] Figure 4 It is the structure schematic drawing of second and third gear pull plate of pull plate type operating mechanism provided by the utility model;

[0024] Figure 5 It is the structure schematic drawing of interlock block of pull plate type operating mechanism provided by the utility model;

[0025] Figure 6 It is the structure schematic drawing of pull plate front support of pull plate type operating mechanism provided by the utility model;

[0026] Figure 7 It is the structure schematic drawing of pull plate rear support of pull plate type operating mechanism provided by the utility model;

[0027] Figure 8 It is the structure schematic drawing of shift fork of pull plate type operating mechanism provided by the utility model;

[0028] Figure 9 Figure is the structure schematic diagram of the pull plate type operating mechanism shift knob provided by the utility model.

[0029] In the figure, 1, shift knob;11, pin hole;12, knob end;13, mounting hole;2, interlocking block;3, first reverse gear pull plate;31, first reverse gear pull plate guide groove;32, first first reverse gear yoke matching groove;33, first second third gear yoke matching groove;34, first second fourth gear yoke matching groove;4, second third gear pull plate;41, second third gear pull plate guide groove 41;42, second first reverse gear yoke matching groove;43, second second third gear yoke matching groove;44, second second fourth gear yoke matching groove;5, fourth gear pull plate;51, fourth gear pull plate guide groove 51;52, third first reverse gear yoke matching groove;53, third second third gear yoke matching groove;6, pull plate front support;61, first rectangular groove;7, pull plate rear support;71, second rectangular groove;8, shift yoke;81, support hole 81;82, yoke end. DETAILED DESCRIPTION

[0030] The utility model will be further explained in detail in combination with specific embodiment, and the explanation is not the limitation of the utility model.

[0031] The utility model discloses a kind of pull plate type operating mechanism of transmission, refer to Figure 1 , including shift knob 1, shift pull plate, pull plate front support 6, pull plate rear support 7, interlocking block 2 and arc-shaped shift yoke 8, pull plate front support 6 and pull plate rear support 7 are respectively set in the both ends of shift pull plate, shift yoke 8 is matched with the yoke matching groove on shift pull plate, interlocking block 2 is located in the guide groove of shift pull plate, shift knob 1 is set in the guide groove cooperation of shift pull plate, and knob end 12 of shift knob 1 is located in interlocking block 2. Among them, interlocking block 2 is matched with shift knob 1 to realize gear interlock, and pull plate front support 6 and pull plate rear support 7 are used to realize the support of shift pull plate.

[0032] Refer to Figure 2 、 3 , 4, shift pull plate includes independent first reverse gear pull plate 3, second third gear pull plate 4 and fourth gear pull plate 5, guide groove includes first reverse gear pull plate guide groove 31, second third gear pull plate guide groove 41 and fourth gear pull plate guide groove 51, and correspondingly with first reverse gear pull plate 3, second third gear pull plate 4 and fourth gear pull plate 5 respectively.

[0033] The first reverse gear pull plate 3 is provided with a first reverse gear shift fork mating groove 32, a first second and third gear shift fork mating groove 33, and a first fourth and fifth gear shift fork mating groove 34; the second and third gear pull plate 4 is provided with a second reverse gear shift fork mating groove 42, a second second and third gear shift fork mating groove 43, and a second fourth and fifth gear shift fork mating groove 44; the fourth and fifth gear pull plate 5 is provided with a third reverse gear shift fork mating groove 52 and a third second and third gear shift fork mating groove 53.

[0034] Different lengths of grooves are designed to match different shifting needs. Specifically, the length of the first reverse gear shift fork in groove 32 is equal to the length of the second reverse gear shift fork in groove 42; the length of the second reverse gear shift fork in groove 42 is greater than the length of the third reverse gear shift fork in groove 52.

[0035] The length of the groove 53 of the third, second, and third gear shift fork is equal to the length of the groove 33 of the first, second, and third gear shift fork; the length of the groove 33 of the first, second, and third gear shift fork is greater than the length of the groove 43 of the second, second, and third gear shift fork.

[0036] The length of the groove 44 of the second, fourth, and fifth gear shift fork is greater than the length of the groove 34 of the first, fourth, and fifth gear shift fork.

[0037] Reference Figure 6 , 7 The front and rear pull plate brackets 6 and 7 are respectively machined with a first rectangular groove 61 and a second rectangular groove 71. The front and rear pull plate brackets 6 and 7 are respectively mounted on the housing. One end of the pull plate is positioned in the first rectangular groove 61, and the other end is positioned in the second rectangular groove 71 of the rear pull plate bracket 7. The front pull plate bracket 6 is rotatably mounted in the pull plate bracket hole on the rear end face of the clutch housing to facilitate position adjustment of the pull plate within the transmission during installation.

[0038] Reference Figure 8 The shift fork 8 includes a connecting fork foot, an arc-shaped plate, and a shift fork end 82. The fork foot has a support hole 81, and the shift fork is fixed to the transmission housing by a pin passing through the support hole 81. This pin not only acts as a fulcrum for the shift fork 8's movement but also serves for positioning and fixation. The shift fork end 82 mates with a shift fork mating groove on the pull plate.

[0039] Reference Figure 9 The shift lever 1 is provided with a pin hole 11 and a mounting hole 13. The horizontal shift lever passes through the mounting hole 13 and is fixedly connected to the shift lever by a fixing pin passing through the pin hole 11.

[0040] The utility model discloses a kind of gear box pull plate type operating mechanism, through split-off pull plate, differentiation groove and interlock design, realize accurate, fast gear switching, while improving performance, compactness and maintenance convenience are considered. When shifting, shift knob 1 drives the pull plate of required gear to move axially by the guiding groove on shift pull plate, since shift fork end 82 of shift fork 8 is fixed in the fork cooperation groove of shift pull plate, and fork end 82 is fixed on the gear box housing by left and right two bolts, shift fork end 82 is stirred by shift pull plate based on lever principle, make the movement of the prong foot of the lower part of shift fork 8, and drive synchronizer slide sleeve, to realize shift function.

[0041] The above only is the preferred embodiment of the utility model, does not use to carry out any limit to the technical scheme of the utility model, and those skilled in the art should understand that, under the premise of not departing from the spirit and principle of the utility model, the technical scheme can be modified and replaced by several simple, and these modifications and replacements also all belong to the protection scope covered in claim book.

Claims

1. A gearbox lever-type operating mechanism, characterized in that, It includes a shift lever (1), a shift plate, a front bracket (6) of the shift plate, a rear bracket (7) of the shift plate, an interlock block (2) and an arc-shaped shift fork (8). The front bracket (6) and the rear bracket (7) of the shift plate are respectively set at both ends of the shift plate. The shift fork (8) is engaged with the shift fork engagement groove on the shift plate. The interlock block (2) is located in the guide groove of the shift plate. The shift lever (1) is set in the guide groove of the shift plate and engaged with the shift end (12) of the shift lever (1) is located in the interlock block (2).

2. The gearbox pull-plate type operating mechanism according to claim 1, characterized in that, The shift lever includes an independent first reverse gear lever (3), second and third gear lever (4), and fourth and fifth gear lever (5). The guide groove includes a first reverse gear lever guide groove (31), a second and third gear lever guide groove (41), and a fourth and fifth gear lever guide groove (51), which correspond to the first reverse gear lever (3), the second and third gear lever (4), and the fourth and fifth gear lever (5), respectively.

3. The gearbox pull-plate type operating mechanism according to claim 2, characterized in that, The first reverse gear pull plate (3) is provided with a first reverse gear shift fork mating groove (32), a first second and third gear shift fork mating groove (33), and a first fourth and fifth gear shift fork mating groove (34); the second and third gear pull plate (4) is provided with a second reverse gear shift fork mating groove (42), a second second and third gear shift fork mating groove (43), and a second fourth and fifth gear shift fork mating groove (44); the fourth and fifth gear pull plate (5) is provided with a third reverse gear shift fork mating groove (52) and a third second and third gear shift fork mating groove (53).

4. The gearbox pull-plate type operating mechanism according to claim 3, characterized in that, The length of the first reverse gear shift fork mating groove (32) is equal to the length of the second reverse gear shift fork mating groove (42); the length of the second reverse gear shift fork mating groove (42) is greater than the length of the third reverse gear shift fork mating groove (52).

5. The gearbox pull-plate type operating mechanism according to claim 3, characterized in that, The length of the groove (53) of the third second and third gear shift fork is equal to the length of the groove (33) of the first second and third gear shift fork; the length of the groove (33) of the first second and third gear shift fork is greater than the length of the groove (43) of the second second and third gear shift fork.

6. The gearbox pull-plate type operating mechanism according to claim 3, characterized in that, The length of the groove (44) of the second, fourth and fifth gear shift fork is greater than the length of the groove (34) of the first, fourth and fifth gear shift fork.

7. The gearbox pull-plate type operating mechanism according to claim 1, characterized in that, The front bracket (6) and the rear bracket (7) of the pull plate are respectively machined with a first rectangular groove (61) and a second rectangular groove (71). The front bracket (6) and the rear bracket (7) of the pull plate are respectively fixedly installed on the housing. One end of the pull plate is set in the first rectangular groove (61) and the other end is set in the second rectangular groove (71) of the rear bracket (7).

8. The gearbox pull-plate type operating mechanism according to claim 1, characterized in that, The shift lever (1) is provided with a pin hole (11) and a mounting hole (13). The horizontal shift lever passes through the mounting hole (13) and is fixedly connected to the shift lever by a fixing pin passing through the pin hole (11).

9. The gearbox pull-plate type operating mechanism according to claim 1, characterized in that, The shift fork (8) includes a connecting fork foot, an arc plate and a shift fork end (82). The fork foot is provided with a support hole (81). The shift fork is fixed to the transmission housing by means of a pin passing through the support hole (81). The shift fork end (82) is engaged with the shift fork engagement groove on the pull plate.

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