CN110469666B - Gear shifting rocker arm assembly and gear shifting control mechanism - Google Patents
Gear shifting rocker arm assembly and gear shifting control mechanism Download PDFInfo
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- CN110469666B CN110469666B CN201810447646.2A CN201810447646A CN110469666B CN 110469666 B CN110469666 B CN 110469666B CN 201810447646 A CN201810447646 A CN 201810447646A CN 110469666 B CN110469666 B CN 110469666B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
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Abstract
A shifting rocker arm assembly and a gear selecting and shifting operating mechanism comprising the shifting rocker arm assembly are provided. The shifting rocker arm assembly includes a shifting rocker arm subassembly and a counterweight rocker arm subassembly. The shifting rocker arm and the counterweight rocker arm are used for being assembled to a shaft of a gear selecting and shifting operating mechanism of a gearbox, the shifting rocker arm and the counterweight rocker arm have a substantially relatively fixed position relation in a rotating direction around the shaft, and the shifting rocker arm and the counterweight rocker arm are assembled in a clearance mode: when the gear shifting rocker arm rotates for the purpose of gear shifting, the gear shifting rocker arm drives the balance weight rocker arm and the balance weight rocker arm drives the shaft to rotate. Under the condition of the function of shifting of the rocking arm subassembly of shifting, through the clearance fit between rocking arm and the counter weight rocking arm of shifting, the transmission of the vibration of having alleviateed from the engine end to the rocking arm of shifting, especially the transmission of the vibration of enlargiing through the counter weight to the rocking arm of shifting, and then reduced the vibration transmission on the cable of being connected with the rocking arm of shifting, improved driving comfort.
Description
Technical Field
The invention relates to the field of automobile gear shifting devices, in particular to a gear shifting rocker arm assembly and a gear selecting and shifting control mechanism comprising the same.
Background
At present, the gear shifting rocker arm assembly of a gear selecting and shifting control mechanism of a gearbox is various in structural form and manufacturing process, but most of the gear shifting rocker arm assembly is formed by combining a gear shifting rocker arm, a counterweight and a gear shifting cable pin. The gear shifting rocker arm and the balance weight can be manufactured by various processes such as casting, stamping or machining, the balance weight can be installed on the gear shifting rocker arm through riveting, bolts or integral casting and the like, and the gear shifting cable pin is generally riveted on the gear shifting rocker arm.
The assembled gear shifting rocker arm assembly is connected with a shaft in the gear shifting control mechanism through a gear shifting rocker arm and connected with a cable through a gear shifting cable pin.
Because present rocking arm subassembly and the outside of shifting all is fixed connection, the vibration of engine end can directly transmit the cable on through the rocking arm subassembly of shifting, and then transmits the driver's cabin, causes the driving comfort to reduce.
Disclosure of Invention
The present invention has been made in view of the state of the art described above. The invention aims to provide a shifting rocker arm assembly and a shifting operating mechanism comprising the same.
A shifting rocker arm assembly, comprising:
a shift rocker arm subassembly including a shift rocker arm for connection to a gear selection lever of a cab; and
a weighted rocker arm subassembly comprising a weighted rocker arm and a weight mounted together;
wherein the shifting rocker arm and the counterweight rocker arm are for fitting to a shaft of a gear shift operating mechanism of a transmission, the shifting rocker arm and the counterweight rocker arm having a substantially relatively fixed positional relationship in a direction of rotation about the shaft, the shifting rocker arm and the counterweight rocker arm being lash fitted: when the shifting rocker arm rotates for the purpose of shifting gears, the shifting rocker arm drives the counterweight rocker arm, which drives the shaft to rotate.
In at least one embodiment, there is a clearance between the shifting rocker arm and the counterweight rocker arm in both the axial direction of the shaft and the rotational direction about the axial direction.
In at least one embodiment, the shifting rocker arm subassembly further comprises a bushing fitted into a first shaft bore of the shifting rocker arm, the bushing for clearance fitting with the shaft.
In at least one embodiment, the material from which the bushing is made comprises plastic or copper.
In at least one embodiment, the shifting rocker arm includes a connecting slot and the weighted rocker arm includes a finger that extends into and is clearance fit with the connecting slot.
In at least one embodiment, the finger and the connecting groove are both clearance fit in the axial direction of the shaft and in the rotational direction about the axial direction.
In at least one embodiment, the weighted rocker arm subassembly further includes a bumper cap that is shrink fit onto the finger, the bumper cap being clearance fit with the attachment slot.
In at least one embodiment, the material forming the bumper cap comprises plastic or copper.
A gear selection and shift operating mechanism comprising:
a shift rocker arm subassembly including a shift rocker arm for connection to a gear selection lever of a cab;
a weighted rocker arm subassembly comprising a weighted rocker arm and a weight mounted together; and
the shaft is provided with a plurality of axial holes,
the shifting rocker arm is assembled with the shaft in a clearance way, the counterweight rocker arm is assembled with the shaft fixedly, the shifting rocker arm and the counterweight rocker arm have a substantially relatively fixed position relation in the rotating direction around the shaft, and the shifting rocker arm and the counterweight rocker arm are assembled with the clearance way: when the shifting rocker arm rotates for the purpose of shifting gears, the shifting rocker arm drives the counterweight rocker arm, which drives the shaft to rotate.
In at least one embodiment, the shifting rocker arm subassembly further comprises a shift cable pin,
the rocker arm of shifting includes: a first end portion with a clearance fit to the shaft; and a second end to which the shift cable pin is fixedly mounted.
In at least one embodiment, the shifting rocker arm subassembly further comprises a bushing that fits into a first shaft bore of the first end of the shifting rocker arm.
In at least one embodiment, the weighted rocker arm subassembly further comprises a sleeve via which the weighted rocker arm subassembly is fixedly mounted to the shaft,
the bushing includes: a cylindrical portion that is interference-fitted into the first shaft hole; and a ring plate portion located at one axial end of the cylindrical portion, the ring plate portion abutting against the sleeve.
In at least one embodiment, the shifting rocker arm is fitted to the shaft via the bushing gap such that the shifting rocker arm is movable within a predetermined range relative to the shaft both in an axial direction of the shaft and in a radial direction of the shaft.
In at least one embodiment, the shifting rocker arm further comprises an intermediate portion between the first and second end portions, the intermediate portion being provided with a connecting slot,
the counterweight rocker arm includes a finger that extends into and is clearance fit with the connecting slot.
In at least one embodiment, the counterweight swing arm has a substantially y-shaped plate shape, and the counterweight swing arm includes a base portion, and the finger portion and a counterweight mounting portion that branch off from the base portion, and the counterweight is mounted to the counterweight mounting portion.
In at least one embodiment, the weighted rocker arm subassembly further comprises a sleeve fixedly connected to the base of the weighted rocker arm, the weighted rocker arm subassembly being fixedly mounted to the shaft via the sleeve.
In at least one embodiment, the sleeve comprises: a cylindrical portion having one axial end fixedly connected to a base portion of the counterweight rocker arm; and a stopper part fixedly connected with the other end of the cylindrical part in the axial direction,
the gear selecting and shifting control mechanism further comprises a gear selecting rocker arm assembly, and a ball head or a roller of the gear selecting rocker arm assembly extends between the baffle portion and the counterweight rocker arm, so that when gear selecting operation is carried out, the ball head or the roller can drive the counterweight rocker arm subassembly, the gear shifting rocker arm subassembly and the shaft to move along the axial direction of the shaft.
In the present invention, the shifting rocker arm assembly is split into a shifting rocker arm subassembly comprising a shifting rocker arm and a counterweight rocker arm subassembly comprising a counterweight rocker arm and a counterweight, the shifting rocker arm and the counterweight rocker arm being gap assembled: when the gear shifting rocker arm rotates for the purpose of gear shifting, the gear shifting rocker arm drives the balance weight rocker arm and the balance weight rocker arm drives the shaft to rotate. This has lightened the transmission of the vibration that comes from the engine end to the rocking arm of shifting through the clearance fit between rocking arm of shifting and the counter weight rocking arm under the condition of the function of shifting of realization rocking arm subassembly of shifting, especially the transmission of the vibration of amplifying through the counter weight to the rocking arm of shifting, and then has reduced the vibration transmission to the cable of being connected with the rocking arm of shifting, has improved driving comfort.
Drawings
Fig. 1 shows a perspective view of a shifting rocker arm subassembly of a shifting rocker arm assembly according to one embodiment of the present invention.
Fig. 2A illustrates a perspective view of a weighted rocker arm subassembly of the shifting rocker arm assembly according to one embodiment of the present invention.
Fig. 2B illustrates a perspective view of a weighted rocker arm of the weighted rocker arm subassembly of fig. 2A.
Fig. 3A shows a perspective view of a shifting rocker arm assembly mounted to a shaft according to one embodiment of the present invention.
Fig. 3B shows a partial cross-sectional view of fig. 3A.
Fig. 4 is a schematic perspective view illustrating the mating relationship of the shifting rocker arm assembly and the select rocker arm assembly according to one embodiment of the present invention.
Description of the reference numerals
100 a shift rocker arm subassembly; 10 a gear shifting rocker arm; 11 a first end of a shift rocker arm; 12 a second end of the shift rocker arm; 13 middle part of the gear shifting rocker arm; 14 connecting grooves; 20 a bushing; 21 a cylindrical portion of the bush; 22 ring plate portion of the bushing; 30 shift cable pins;
a 200 weighted rocker arm subassembly; 40 a sleeve; 41 a cylindrical portion of the sleeve; 42 a tab portion of the sleeve; 50 weighted rocker arms; 51 weighting the base of the rocker arm; 52 weighting the fingers of the rocker arm; 53 counterweight mounting portions for counterweight rocker arms; 60 a buffer cap; 70, balancing weight;
80, a retainer ring;
90 shafts; 91 a flange; 300 a gear selecting rocker arm assembly; 310 of a gear selecting rocker arm; 320 balls or rollers; 330 a rotating shaft; a axial direction.
Detailed Description
Exemplary embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the detailed description is intended only to teach one skilled in the art how to practice the invention, and is not intended to be exhaustive or to limit the scope of the invention.
The present invention provides a shifting rocker arm assembly with a vibration damping function that includes a shifting rocker arm subassembly 100 and a counterweight rocker arm subassembly 200.
Structure of gear shifting rocker arm assembly
Referring to fig. 1, the shift rocker arm subassembly 100 includes a shift rocker arm 10, a bushing 20, and a shift cable pin 30. The shifting rocker arm 10 can be produced by bending and/or stamping, for example, a metal sheet. The shifting rocker arm 10 includes a first end portion 11, a second end portion 12, and an intermediate portion 13 located between the first end portion 11 and the second end portion 12. The first and second end portions 11, 12 are substantially parallel, and the intermediate portion 13 is substantially perpendicular to the first and second end portions 11, 12, such that the first and second end portions 11, 12 are offset in an axial direction a along a shaft (see shaft 90 in fig. 3A) in a shift selecting operating mechanism of the transmission.
The first end 11 of the shifting rocker arm 10 is provided with a first shaft bore to which a bushing 20 is mounted, for example by interference fit. The bushing 20 may be made of, for example, a plastic material. The shift cable pin 30 may be riveted or the like to the second end 12 of the shift rocker arm 10. In the illustrated example, the shift cable pin 30 extends in a direction parallel to the axial direction a. At the connection between the intermediate portion 13 and the second end portion 12, a connection groove 14 is provided, the connection groove 14 being used to accommodate a finger 52 of a counterweight swing arm 50 described later.
Referring to fig. 1 and 3B, the bushing 20 includes a cylindrical portion 21 provided in the first shaft hole of the shift rocker arm 10 and a ring plate portion 22 provided on the lower side in the axial direction of the shift rocker arm 10.
Referring to fig. 2A and 2B, the weighted rocker arm subassembly 200 includes a sleeve 40, a weighted rocker arm 50, a cushion cap 60, and a weight 70.
The sleeve 40 includes a cylindrical portion 41 and a stopper portion 42 fixedly connected to one axial end (upper end in the drawing) of the cylindrical portion 41. The cylindrical portion 41 has an axial direction that coincides with the axial direction a, and is fixedly attached to a shaft 90 described later. The stopper portion 42 extends perpendicularly to the axial direction of the cylindrical portion 41.
The counterweight swing arm 50 has a substantially y-shaped plate shape and may be made of, for example, metal. The counterweight swing arm 50 includes a base 51, and a finger 52 and a counterweight mounting portion 53 that branch off from the base 51. A second shaft hole to which the other end (lower end in the drawing) in the axial direction of the cylindrical portion 41 of the sleeve 40 is fixedly connected by, for example, welding is provided in the base portion 51 of the counterweight rocker arm 50. One end portion of the base portion 51 is disposed opposite the flap portion 42 of the sleeve 40 in the axial direction a. A cushion cap 60, made of, for example, plastic, is fitted over the finger 52 of the weighted rocker arm 50 in an interference fit. The counterweight 70 is connected to the counterweight mounting portion 53 of the counterweight rocker arm 50 by, for example, caulking. The finger 52 is generally located between the base 51 and the weight mounting portion 53.
It should be understood that the shape of the weighted rocker arm 50 is not limited to a generally y-shape, and that various modifications and changes may be made to the structure and shape of the weighted rocker arm 50 depending on the structure, design requirements, installation space, etc. of the shifting rocker arm assembly.
The assembly process of the shifting rocker arm assembly according to the present invention is explained with reference to fig. 3A and 3B.
After the shifting rocker arm subassembly 100 and the weighted rocker arm subassembly 200 are assembled separately as shown in fig. 1 and 2A, the weighted rocker arm subassembly 200 is first fixedly mounted to the shaft 90 in the gear selection operating mechanism by the bushing 40, for example, with an interference fit, and then the shifting rocker arm subassembly 100 is clearance-fitted to the shaft 90 by the bushing 20 such that the shifting rocker arm subassembly 100 is substantially located on the upper side of the weighted rocker arm subassembly 200. The inner peripheral surface of the cylindrical portion 21 of the bush 20 is fitted to the shaft 90 with a clearance, and the lower surface of the annular plate portion 22 of the bush 20 is in contact with the upper end surface of the stopper portion 42 of the sleeve 40. When the shifting rocker arm subassembly 100 is mounted to the shaft 90 through the bushing 20, the finger 52 and the bumper cap 60 thereon are caused to extend into the attachment slot 14 of the shifting rocker arm 10. Finally, the E-or C-shaped retainer ring 80 is snap-fit to the shaft 90. The retainer ring 80 and the sleeve 40 define the axial position of the shifting rocker arm subassembly 100 because the retainer ring 80 is snap fit under the flange 91 of the shaft 90. The mounting position of the retaining ring 80 is such that the shifting rocker arm subassembly 100 can move in the axial direction a within a predetermined range relative to the weighted rocker arm subassembly 200.
There may be a small gap between the buffer cap 60 and both sidewalls of the coupling groove 14 in opposite directions around the shaft 90. In other words, the shifting rocker arm subassembly 100 and the counterweight rocker arm subassembly 200 are clearance fit in the direction of rotation of the shifting rocker arm assembly about the axial direction a.
It should be understood that the shaft 90 is only used to illustrate the manner of mounting and operation of the shifting rocker arm assembly of the present invention in a shift operating mechanism and that the shaft 90 is not an integral part of the shifting rocker arm assembly of the present invention.
After the gear shifting rocker arm assembly is assembled to a gear selecting and shifting control mechanism of a gearbox, the gear selecting and shifting control mechanism is assembled on the gearbox shell, wherein a gear shifting cable pin 30 is connected with a gear selecting and shifting control handle of a cab through a cable.
Implementation process of gear shifting function of gear shifting rocker arm assembly
With reference to fig. 3A and 3B, the implementation of the shifting function of the shifting rocker arm assembly of the present invention is described below.
When the driver operates the select shift lever to shift, the cable drives the shift cable pin 30 to rotate the shift rocker arm subassembly 100 about the axle 90. Since the shifting rocker arm 10 (bushing 20) of the shifting rocker arm subassembly 100 is a clearance fit with the shaft 90, the shaft 90 does not rotate with the shifting rocker arm subassembly 100. Since the bumper cap 60 of the weighted rocker arm sub-assembly 200 (the finger 52 of the weighted rocker arm 50) is inserted into the attachment slot 14 of the shifting rocker arm 10, the shifting rocker arm sub-assembly 100 will rotate about the axis a with the bumper cap 60 after a slight rotation. Since the weighted rocker arm subassembly 200 is fixedly connected to the shaft 90 via the sleeve 40, the weighted rocker arm subassembly 200 will drive the shaft 90 to rotate together, ultimately achieving the shifting function.
Vibration damping function of gear shifting rocker arm assembly
When the automobile works, the vibration at the end of the engine is transmitted to the gearbox and then transmitted to the shaft 90 through the shell of the gear selecting and shifting control mechanism. Because the shifting rocker arm subassembly 100 is clearance fit with the shaft 90 via the bushing 20, vibrations of the shaft 90 are not directly (or after being filtered) transferred to the shifting rocker arm subassembly 100.
Since the weighted rocker arm sub-assembly 200 is fixedly attached to the shaft 90, vibrations are transmitted to the weighted rocker arm sub-assembly 200. The bumper cap 60 on the finger 52 of the weighted rocker arm 50 is in a clearance fit with the shifting rocker arm 10 to filter out vibrations, and smaller amplitude vibrations are rejected, and larger amplitude vibrations are attenuated to smaller amplitude vibrations, and correspondingly, vibrations transmitted from the shifting rocker arm subassembly 100 to the cab's shift lever handle are attenuated.
In short, the clearances between the bushing 20 and the shaft 90 and between the cushion cap 60 and the shift rocker arm 10 attenuate the transmission of vibrations, thereby achieving the purpose of vibration damping.
Implementation of the selection function of a selection and shift control mechanism comprising a shifting rocker arm assembly according to the invention
The implementation of the gear selection function of the gear selection operating mechanism comprising the gear selection rocker arm assembly of the present invention is briefly described below with reference to fig. 4.
When the driver operates the gear selecting and shifting control handle to select gears, the cable drives the gear selecting rocker arm 310 in the gear selecting rocker arm assembly 300, so that the ball head or the roller 320 swings around the rotating shaft 330. The ball or roller 320 is placed between the flap portion 42 of the sleeve 40 and the base portion 51 of the weighted rocker arm 50. Since the sleeve 40 is fixedly connected to the weighted rocker arm 50, the relative distance between the flap portion 42 of the sleeve 40 and the base portion 51 of the weighted rocker arm 50 remains constant. Further, the lower side of the shift rocker arm 10 is restricted by the sleeve 40, the upper side is restricted by the retainer 80, and the relative position of the shift rocker arm 10 and the shaft 90 in the axial direction a is also kept substantially constant. The sleeve 40 is fixedly connected to the shaft 90. Thus, manipulation of the select rocker arm 310 ultimately moves the weighted rocker arm subassembly 200, the shifting rocker arm subassembly 100, and the shaft 90 up and down in the axial direction a, thereby ensuring the select function. All parts have no interference in the axial direction A, and the gear selecting function is not influenced.
It should be understood that the gear selection rocker arm assembly 300 and the shaft 90 of fig. 4 are only used for illustrating the implementation of the gear selection function of the gear selection operating mechanism including the gear selection rocker arm assembly of the present invention, and the gear selection rocker arm assembly 300 and the shaft 90 can be used as components of the gear selection operating mechanism, but not components of the gear selection rocker arm assembly of the present invention.
The following briefly describes some of the benefits that may be obtained by the shifting rocker arm assembly and the shift operating mechanism comprising the shifting rocker arm assembly according to the present invention.
The gear shifting rocker arm assembly can be applied to gear selecting and shifting control mechanisms of most gearboxes, can effectively reduce vibration transmission, and is convenient to assemble, strong in adaptability, compact and simple in structure and low in cost.
More specifically, in the above embodiment, the shifting rocker arm assembly is divided into a loose-fitting shifting rocker arm subassembly 100 and a weighted rocker arm subassembly 200, the weighted rocker arm subassembly 200 being for fixed assembly with the shaft 90 and the shifting rocker arm subassembly 100 being for loose assembly with the shaft 90. Thus, vibrations from the engine end are not rigidly transmitted directly to the shift rocker arm 10 via the shaft 90, and vibrations of the shift lever handle transmitted by the shift rocker arm 10 to the cab can be reduced.
The shifting rocker arm 10 is clearance fitted to the shaft 90 via the bushing 20, both the clearance and the bushing 20 may act to filter vibrations, thereby reducing the transmission of vibrations from the shaft 90 to the shifting rocker arm 10.
The weighted rocker arm 50 is clearance fitted with the attachment slot 14 of the shifting rocker arm 10 via a bumper cap 60 that is fitted over the finger 52, both the bumper cap 60 and the clearance acting to filter vibrations, thereby reducing the transmission of vibrations from the weighted rocker arm 50 to the shifting rocker arm 10.
As shown in fig. 3A and 3B, the finger 52 (cushion cap 60) of the weighted rocker arm 50 is not only clearance fitted with the shift rocker arm 10 in the rotational direction of the shift rocker arm assembly about the axial direction a, but the finger 52 (cushion cap 60) can also move in the connecting groove 14 in the axial direction a. In this way, damping in both the axial and rotational directions can be achieved.
When the gear shifting rocker arm assembly is assembled on the shaft 90, the counterweight rocker arm subassembly 200 is fixedly assembled on the shaft 90, then the gear shifting rocker arm subassembly 100 is installed along the axial direction A, and finally the retainer ring 80 is clamped, so that the whole assembly process is simple.
It should be understood that the above embodiments are only exemplary and are not intended to limit the present invention. Various modifications and alterations of the above-described embodiments may be made by those skilled in the art in light of the teachings of the present invention without departing from the scope thereof.
(1) In the present invention, the shifting rocker arm 10 does not have to be clearance fitted with the shaft 90 via the bushing 20, and the first shaft hole of the shifting rocker arm 10 may be directly clearance fitted with the shaft 90.
Even further, the shifting rocker arm 10 may be fixedly mounted to the shaft 90. This is because, to some extent, the transmission of vibrations from the shaft 90 to the shifting rocker arm 10 is acceptable. An important aspect of the present invention is to mitigate the transmission of vibrations amplified by the counterweight 70 in the weighted rocker arm subassembly 200 to the shifting rocker arm 10.
The axial position of the shifting rocker arm 10 need not be defined by the retaining ring 80, and the axial position of the shifting rocker arm 10 can be defined, for example, by punching the shaft 90 or inserting a pin or the like into a radial bore of the shaft 90.
(2) The manner of attachment of the counterweight rocker arm 50 to the shifting rocker arm 10 is not limited to a clearance fit between the finger 52 and the attachment slot 14. For example, a protrusion fixed to the shift rocker arm 10 may protrude into the attachment slot of the counterweight rocker arm 50. The location and orientation of the fingers 52 and the attachment slots 14 are also not limited to the examples shown in the figures.
For example, in an example not shown, the shift rocker arm 10 may be formed in a flat plate shape, and the finger 52 of the balance weight rocker arm 50 is bent upward to be inserted into a connecting groove of an intermediate portion of the shift rocker arm 10. At this time, for example, the shift cable pin 30 may extend downward from the second end 12 of the shift rocker arm 10.
(3) The cooperative mating of the shifting rocker arm subassembly 100 and the weighted rocker arm subassembly 200 is not limited to the shifting rocker arm subassembly 100 being located on the upper side of the weighted rocker arm subassembly 200. For example, the weighted rocker arm subassembly 200 may be assembled to the upper side of the shifting rocker arm subassembly 100 so long as the components do not interfere with one another to enable gear selection and shifting operations.
(4) The bumper cap 60 may be omitted and the fingers 52 may be clearance fit with the coupler slots 14. At this time, the finger 52 is preferably heat treated to improve its wear resistance.
(5) The material of bushing 20 and bumper cap 60 is not limited to plastic, for example, the material forming bushing 20 and bumper cap 60 may include copper or PTFE or other composite materials, and the like.
The material forming the bushing 20 and the cushion cap 60 preferably has a hardness and/or coefficient of friction that is less than the hardness and/or coefficient of friction of the material (e.g., steel) forming the shift rocker arm 10 and the weighted rocker arm 50.
(6) The cylindrical portion 21 and the annular plate portion 22 of the bush 20 do not necessarily have to be integrally formed or formed in one piece, and the cylindrical portion 21 and the annular plate portion 22 may be separate cylindrical and annular plate members (spacers).
Claims (16)
1. A shifting rocker arm assembly, comprising:
a shift rocker arm subassembly including a shift rocker arm for connection to a gear selection lever of a cab; and
a weighted rocker arm subassembly comprising a weighted rocker arm and a weight mounted together;
wherein the shifting rocker arm and the counterweight rocker arm are used for being assembled to a shaft of a gear selecting and shifting operating mechanism of a gearbox, the shifting rocker arm and the counterweight rocker arm have a substantially relatively fixed position relation in a rotating direction around the shaft, and the shifting rocker arm and the counterweight rocker arm are clearance assembled: when the shifting rocker arm rotates for the purpose of gear shifting, the shifting rocker arm drives the counterweight rocker arm, and the counterweight rocker arm drives the shaft to rotate;
wherein the shifting rocker arm includes a connecting groove, and the counterweight rocker arm includes a finger portion that protrudes into the connecting groove and is clearance-fitted to both side walls of the connecting groove in a rotational direction about an axis.
2. The shifting rocker arm assembly of claim 1 wherein there is clearance between the shifting rocker arm and the weighted rocker arm in both the axial direction of the shaft and the rotational direction about the axial direction.
3. The shifting rocker arm assembly of claim 1 or 2, further comprising a bushing fitted into a first shaft bore of the shifting rocker arm, the bushing for clearance fitting with the shaft.
4. The shifting rocker arm assembly of claim 3 wherein the material from which the bushing is made comprises plastic or copper.
5. The shifting rocker arm assembly of claim 1, wherein the finger portion is in clearance fit with the attachment slot both axially of the shaft and rotationally about the axial direction.
6. The shifting rocker arm assembly of claim 1, wherein the weighted rocker arm subassembly further comprises a bumper cap that is nested to the finger in an interference fit, the bumper cap being a clearance fit with the attachment slot.
7. The shifting rocker arm assembly of claim 6 wherein the material forming the bumper cap comprises plastic or copper.
8. A gear selection and shift operating mechanism comprising:
a shift rocker arm subassembly including a shift rocker arm for connection to a gear selection lever of a cab;
a weighted rocker arm subassembly comprising a weighted rocker arm and a weight mounted together; and
the shaft is provided with a plurality of axial holes,
the shifting rocker arm is clearance fitted with the shaft, the counterweight rocker arm is fixedly fitted with the shaft, the shifting rocker arm and the counterweight rocker arm have a substantially relatively fixed positional relationship in a direction of rotation about the shaft, the shifting rocker arm and the counterweight rocker arm are clearance fitted: when the shifting rocker arm rotates for the purpose of shifting gears, the shifting rocker arm drives the counterweight rocker arm, which drives the shaft to rotate.
9. The gear selection shift operating mechanism of claim 8 wherein said shift rocker arm subassembly further includes a shift cable pin,
the rocker arm of shifting includes: a first end portion with a clearance fit to the shaft; and a second end to which the shift cable pin is fixedly mounted.
10. The select shift operating mechanism of claim 9 wherein the shift rocker arm subassembly further includes a bushing that fits into a first shaft bore of the first end of the shift rocker arm.
11. The gear selection and shift operating mechanism of claim 10 wherein said weighted rocker arm subassembly further includes a sleeve, said weighted rocker arm subassembly being fixedly mounted to said shaft via said sleeve,
the bushing includes: a cylindrical portion that is interference-fitted into the first shaft hole; and a ring plate portion located at one axial end of the cylindrical portion, the ring plate portion abutting against the sleeve.
12. The select shift operating mechanism according to claim 11, wherein the shift rocker arm is fitted to the shaft via the bushing gap such that the shift rocker arm is movable within a predetermined range with respect to the shaft both in an axial direction of the shaft and in a radial direction of the shaft.
13. The gear selection shift operating mechanism according to claim 9, wherein the shift rocker arm further includes an intermediate portion between the first end portion and the second end portion, the intermediate portion being provided with a connecting groove,
the counterweight rocker arm includes a finger that extends into and is clearance fit with the connecting slot.
14. The gear selection and shift operating mechanism according to claim 13, wherein the weight rocker arm is generally y-shaped plate-like, the weight rocker arm including a base portion and the finger portion and a weight mounting portion that diverge from the base portion, the weight being mounted to the weight mounting portion.
15. The gear selection and shift operating mechanism of claim 14 wherein said weighted rocker arm subassembly further comprises a sleeve fixedly connected to said base of said weighted rocker arm, said weighted rocker arm subassembly being fixedly mounted to said shaft via said sleeve.
16. The gear selection and shift operating mechanism of claim 15 wherein said sleeve comprises: a cylindrical portion having one axial end fixedly connected to a base portion of the counterweight rocker arm; and a stopper part fixedly connected with the other end of the cylindrical part in the axial direction,
the gear selecting and shifting control mechanism further comprises a gear selecting rocker arm assembly, and a ball head or a roller of the gear selecting rocker arm assembly extends between the baffle portion and the counterweight rocker arm, so that when gear selecting operation is carried out, the ball head or the roller can drive the counterweight rocker arm subassembly, the gear shifting rocker arm subassembly and the shaft to move along the axial direction of the shaft.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810447646.2A CN110469666B (en) | 2018-05-11 | 2018-05-11 | Gear shifting rocker arm assembly and gear shifting control mechanism |
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| CN201810447646.2A CN110469666B (en) | 2018-05-11 | 2018-05-11 | Gear shifting rocker arm assembly and gear shifting control mechanism |
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| CN110469666B true CN110469666B (en) | 2022-08-02 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1091149A2 (en) * | 1999-10-07 | 2001-04-11 | Bayerische Motoren Werke Aktiengesellschaft | Damper for shift linkage |
| DE10322037A1 (en) * | 2003-05-16 | 2004-12-02 | Adam Opel Ag | Switch actuation system has first lever part rotatable about shift shaft rotation axis, spring device opposing second lever part rotation away from equilibrium position relative to first lever part |
| CN102927264A (en) * | 2011-08-11 | 2013-02-13 | 现代自动车株式会社 | Operating shift apparatus for transmission |
| CN103104693A (en) * | 2011-11-14 | 2013-05-15 | 通用汽车环球科技运作有限责任公司 | Shift tower with decoupled mass |
| WO2015058763A1 (en) * | 2013-10-22 | 2015-04-30 | Schaeffler Technologies AG & Co. KG | Shift device |
| DE102013223055A1 (en) * | 2013-11-13 | 2015-05-13 | Jopp Holding GmbH | Lever device with mass element for a motor vehicle transmission |
-
2018
- 2018-05-11 CN CN201810447646.2A patent/CN110469666B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1091149A2 (en) * | 1999-10-07 | 2001-04-11 | Bayerische Motoren Werke Aktiengesellschaft | Damper for shift linkage |
| DE10322037A1 (en) * | 2003-05-16 | 2004-12-02 | Adam Opel Ag | Switch actuation system has first lever part rotatable about shift shaft rotation axis, spring device opposing second lever part rotation away from equilibrium position relative to first lever part |
| CN102927264A (en) * | 2011-08-11 | 2013-02-13 | 现代自动车株式会社 | Operating shift apparatus for transmission |
| CN103104693A (en) * | 2011-11-14 | 2013-05-15 | 通用汽车环球科技运作有限责任公司 | Shift tower with decoupled mass |
| WO2015058763A1 (en) * | 2013-10-22 | 2015-04-30 | Schaeffler Technologies AG & Co. KG | Shift device |
| DE102013223055A1 (en) * | 2013-11-13 | 2015-05-13 | Jopp Holding GmbH | Lever device with mass element for a motor vehicle transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110469666A (en) | 2019-11-19 |
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