CN211082780U - Rocker arm of gearbox - Google Patents
Rocker arm of gearbox Download PDFInfo
- Publication number
- CN211082780U CN211082780U CN201921528529.5U CN201921528529U CN211082780U CN 211082780 U CN211082780 U CN 211082780U CN 201921528529 U CN201921528529 U CN 201921528529U CN 211082780 U CN211082780 U CN 211082780U
- Authority
- CN
- China
- Prior art keywords
- shifting
- gear selecting
- rocker arm
- gearbox
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- General Details Of Gearings (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The utility model provides a gearbox rocking arm. The rocker arm of the gearbox is communicated with the outside through a vent hole, a gear selecting and shifting shaft, a gear shifting shaft head inner hole and a vent groove in the gearbox, so that the ventilation function is realized. The speed is changed at the assembly position of the whole vehicle, the air outlet is arranged below the air passage, so that external impurities and water can be effectively prevented from entering the air passage, the ventilation function of the gearbox is integrated on the gear shifting rocker arm assembly, compared with a ventilation plug with a traditional structure, the number of parts is reduced, the cost is reduced, and the space is saved; can cut off the shake that the inside transmission of derailleur when keeping off on the rocking arm assembly of shifting does not influence the function of shifting of the rocking arm of shifting, simple structure, with low costs, the rocking arm of shifting through double bush structural mounting on the rocking arm seat, reduces the rocking arm of shifting and rocks.
Description
Technical Field
The utility model belongs to the technical field of the tool to lock, concretely relates to gearbox rocking arm.
Background
With the gradual maturity of the market of the manual transmission, the whole vehicle customers pay more attention to the subjective and objective evaluation of vehicle driving, and the requirement on the gear shifting performance of the transmission is higher and higher. And the shaking seriously affects the gear shifting and the driving comfort. The traditional manual transmission gear shifting rocker arm is of an integrated structure and is high in rigidity. If the inside shake that takes place of derailleur, will shake easily through the rocking arm mechanism of shifting and transmit whole car handle of shifting on, influence the driving comfort.
Ventilation of the gearbox is currently achieved domestically using a separate vent plug or breathing tube: the structure of the vent plug is complex, and the processing and manufacturing cost is high; although the breathing pipe mode is simple in structure, in the whole vehicle arrangement process, the installation position needs to be reserved, and the whole vehicle assembly process is increased.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a can reduce the rocking arm of shifting and rock, simple structure is reliable, and the cost is lower and can realize that the function of ventilating does not need to reserve the gearbox rocking arm of mounted position.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a gearbox rocker arm comprises a shaft fixing part, a gearbox top cover fixing part and a connecting part, wherein the connecting part is respectively connected with the shaft fixing part and the gearbox top cover fixing part, and a shaft fixing hole is formed in the shaft fixing part; the connecting part comprises a gear selecting and shifting arm rod head and a gear selecting and shifting arm rod, an inner hole for sleeving the gear selecting and shifting arm rod is formed in the gear selecting and shifting arm rod head, a vent groove is formed in the axial direction of the inner wall of the inner hole, and a pin hole is formed in the radial direction of the inner hole; the gear selecting and shifting arm rod is of a hollow structure, a pin hole is formed in one end of the gear selecting and shifting arm rod, vent holes are formed in the radial direction of the gear selecting and shifting arm rod, and one end, provided with the pin hole, of the gear selecting and shifting arm rod is arranged in the inner cavity of the gear selecting and shifting arm rod head and is fixed in the gear selecting and shifting arm rod head through a coil spring pin.
The gearbox rocker arm further comprises a rocker arm seat, a pin shaft sleeve is arranged at the rear end of the rocker arm seat, a strip-shaped limiting groove is formed in the front end of the rocker arm seat in the length direction of the rocker arm seat, a rotary pin shaft is arranged in the pin shaft sleeve, the rotary pin shaft is sleeved in the middle of the connecting portion, a stop pin is arranged at the front end of the gear shifting rocker arm, the free end of the stop pin is located in the limiting groove, a torsion spring is sleeved on the outer wall of the pin shaft sleeve, the stop pin is located between two legs of the torsion spring, a cylindrical balancing weight is arranged at the rear end of the connecting portion, a gear selecting and shifting block groove is formed in the front end of the rocker arm seat, and the gear.
According to the gearbox rocker arm, the cross section of the mounting hole is rectangular, an opening is formed in the bolt fixing hole in the radial direction, and the opening is communicated with the mounting hole.
In the gearbox rocker arm, two symmetrically distributed vent grooves are formed in the inner hole of the rod head of the gear selecting and shifting arm.
The utility model has the advantages that: the rocker arm of the gearbox is communicated with the outside through a vent hole, a gear selecting and shifting shaft, a gear shifting shaft head inner hole and a vent groove in the gearbox, so that the ventilation function is realized. The speed is changed at the assembly position of the whole vehicle, the air outlet is arranged below the air passage, so that external impurities and water can be effectively prevented from entering the air passage, the ventilation function of the gearbox is integrated on the gear shifting rocker arm assembly, compared with a ventilation plug with a traditional structure, the number of parts is reduced, the cost is reduced, and the space is saved; can cut off the shake that the inside transmission of derailleur when keeping off on the rocking arm assembly of shifting does not influence the function of shifting of the rocking arm of shifting, simple structure, with low costs, the rocking arm of shifting through double bush structural mounting on the rocking arm seat, reduces the rocking arm of shifting and rocks.
Drawings
Fig. 1 is a schematic structural view of a transmission rocker arm of the present invention.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
Referring to fig. 1, the utility model provides a transmission rocker arm, which comprises a shaft fixing part, a transmission top cover fixing part and a connecting part, wherein the connecting part is respectively connected with the shaft fixing part and the transmission top cover fixing part, and a shaft fixing hole is arranged on the shaft fixing part; the connecting part comprises a gear selecting and shifting arm rod head 2 and a gear selecting and shifting arm rod 3, an inner hole for sleeving the gear selecting and shifting arm rod 3 is formed in the gear selecting and shifting arm rod head 2, a vent groove is formed in the axial direction of the inner wall of the inner hole, and a pin hole is formed in the radial direction of the inner hole; the gear selecting and shifting arm rod 3 is of a hollow structure, a pin hole is formed in one end of the gear selecting and shifting arm rod 3, vent holes are formed in the radial direction of the gear selecting and shifting arm rod 3, and one end, with the pin hole, of the gear selecting and shifting arm rod 3 is arranged in an inner cavity of the gear selecting and shifting arm rod head 2 and fixed in the gear selecting and shifting arm rod head 2 through a spring coiling pin.
Further, the utility model relates to an in the embodiment of the preferred of gearbox rocking arm, still include rocker arm seat 4, 4 rear ends of rocker arm seat are equipped with round pin axle sleeve 5, 4 front ends of rocker arm seat are equipped with the bar spacing groove 41 that sets up along 4 length direction of rocker arm seat, be equipped with the rotatory round pin axle in the round pin axle sleeve 5, the rotatory round pin axle is located to connecting portion middle part cover, the connecting portion front end is equipped with the backing pin, the backing pin free end is located spacing groove 41, 5 outer wall covers of round pin axle sleeve have the torsional spring, the backing pin is located between the torsional spring both feet, the connecting portion rear end is equipped with the cylindricality balancing weight, 4 front ends of rocker arm seat are equipped with the selection and keep off group piece groove, and the selection keeps off group piece groove edge 4 width direction of rocker arm seat set up and with spacing groove. The rear end of the connecting part is provided with a guy cable connecting ball pin. And bushings are respectively arranged in two ends of the pin shaft sleeve. And one side of the front end of the rocker arm seat 4 is provided with an elastic pin hole.
A gear selecting and shifting block groove arranged along the width direction of the rocker arm seat 4 is arranged below the limiting groove 41, and an elastic pin hole is arranged at one side of the front end of the rocker arm seat 4.
The elastic pin hole is connected with a gear selecting and shifting shaft of the transmission, and the gear selecting and shifting block slot is clamped into a gear selecting and shifting block on the gear selecting rocker arm assembly.
When the connecting part rotates a certain angle to complete gear shifting, the connecting part rotates an angle α under the action of the torsion spring, the stop pin is positioned in the middle of the limit groove 41, the gear returning process is similar to the gear entering process in principle, and the rotation angle α of the stop pin is determined by the width L of the limit groove 411 and the swing arm distance of the stop pin.
When keeping off the state, if the inside shift fork system of derailleur takes place the shake, can transmit the shake that leads to the fact cable connection ball pin department for connecting portion through rocking arm seat 4, transmit the whole car selector handle through the cable then. And under the effect of torsional spring, the shake is all cut off by the torsional spring, can not transmit for connecting portion, realizes the anti-shake function.
Further, in an embodiment of the preferred embodiment of the transmission rocker arm of the present invention, the cross section of the mounting hole is a rectangle, and the bolt fastening hole is radially provided with an opening, and the opening communicates with the mounting hole.
Further, in the preferred embodiment of the present invention, the gear selecting and shifting arm rod head 2 has two symmetrically distributed ventilation slots 21 on its inner hole.
The utility model discloses this kind of gearbox rocking arm is inside the gearbox gaseous through air vent-select the selector shaft-shift spindle nose hole-air duct and outside intercommunication, realizes the function of ventilating. The speed is changed at the assembly position of the whole vehicle, the air outlet is arranged below the air passage, so that external impurities and water can be effectively prevented from entering the air passage, the ventilation function of the gearbox is integrated on the gear shifting rocker arm assembly, compared with a ventilation plug with a traditional structure, the number of parts is reduced, the cost is reduced, and the space is saved; can cut off the shake that the inside transmission of derailleur when keeping off on the rocking arm assembly of shifting does not influence the function of shifting of the rocking arm of shifting, simple structure, with low costs, the rocking arm of shifting through double bush structural mounting on the rocking arm seat, reduces the rocking arm of shifting and rocks.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A gearbox rocker arm comprises a shaft fixing part, a gearbox top cover fixing part and a connecting part, wherein the connecting part is respectively connected with the shaft fixing part and the gearbox top cover fixing part, and a shaft fixing hole is formed in the shaft fixing part; the gearbox top cover fixing part is provided with a mounting hole and a bolt fixing hole which are perpendicular to each other, and is characterized in that the connecting part comprises a gear selecting and shifting arm rod head (2) and a gear selecting and shifting arm rod (3), an inner hole for sleeving the gear selecting and shifting arm rod (3) is formed in the gear selecting and shifting arm rod head (2), a vent groove is formed in the axial direction of the inner wall of the inner hole, and a pin hole is formed in the radial direction of the inner hole; the gear selecting and shifting arm lever (3) is of a hollow structure, a pin hole is formed in one end of the gear selecting and shifting arm lever (3), vent holes are formed in the radial direction of the gear selecting and shifting arm lever (3), and one end, with the pin hole, of the gear selecting and shifting arm lever (3) is arranged in an inner cavity of the gear selecting and shifting arm lever head (2) and fixed in the gear selecting and shifting arm lever head (2) through a coil spring pin.
2. The gearbox rocker arm according to claim 1, further comprising a rocker arm base (4), wherein a pin shaft sleeve (5) is arranged at the rear end of the rocker arm base (4), a strip-shaped limiting groove (41) arranged along the length direction of the rocker arm base (4) is arranged at the front end of the rocker arm base (4), a rotating pin shaft is arranged in the pin shaft sleeve (5), the rotating pin shaft is sleeved in the middle of the connecting portion, a stop pin is arranged at the front end of the connecting portion, the free end of the stop pin is located in the limiting groove (41), a torsion spring is sleeved on the outer wall of the pin shaft sleeve (5), the stop pin is located between two legs of the torsion spring, a cylindrical counterweight block is arranged at the rear end of the connecting portion, and a gear selecting and shifting block groove is arranged at the front end of the rocker arm base (4) and communicated with the limiting groove (41).
3. The transmission rocker arm of claim 2 wherein the mounting hole is rectangular in cross section, and the bolt-securing hole has an opening formed radially therein, the opening communicating with the mounting hole.
4. A gear lever arm according to claim 3, characterised in that the inner bore of the gear lever head (2) has two symmetrically arranged ventilation slots (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921528529.5U CN211082780U (en) | 2019-09-12 | 2019-09-12 | Rocker arm of gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921528529.5U CN211082780U (en) | 2019-09-12 | 2019-09-12 | Rocker arm of gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211082780U true CN211082780U (en) | 2020-07-24 |
Family
ID=71636758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921528529.5U Expired - Fee Related CN211082780U (en) | 2019-09-12 | 2019-09-12 | Rocker arm of gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211082780U (en) |
-
2019
- 2019-09-12 CN CN201921528529.5U patent/CN211082780U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200724 |