CN203082197U - Novel gear shifting mechanism of transmission - Google Patents

Abstract

The utility model relates to a novel gear shifting mechanism of a transmission. The mechanism comprises a gear shifting arm, a fork shaft, a guide shaft, a five-gear fork and a gear-reversing control fork. The five-gear fork is provided with a C-type clamping ring, the fork shaft and the guide shaft are provided with corresponding clamping ring installation grooves and are located on the gear-reversing control fork, the five-gear fork is located on the fork shaft and the guide shaft, the gear shifting arm is connected with the fork shaft through a first pin shaft, the gear-reversing control fork is provided with a second pin shaft sliding groove, a second pin shaft is located on the fork shaft, a first ball socket and a second ball socket which are composed by opposite hemispheric grooves are arranged between the fork shaft and the guide shaft, the first ball socket is located in the five-gear fork, a first steel ball is installed in the first ball socket, the second ball is located in the gear-reversing control fork, and a second steel ball is installed in the second ball socket. The novel gear shifting mechanism is simple in structure, reasonable in design, and capable of effectively reducing the axial length, improves match flexibility of the transmission, enables assembly and disassembly to be convenient, and is low in cost and convenient to maintain.

Description

A kind of new work transmission gearshift

Technical field

The utility model relates to a kind of new work transmission gearshift, and particularly a kind of new work transmission gearshift that shortens gearshift structure axial length belongs to the speed changer technical field.

Background technique

At present, known speed changer is the important component part of car transmissions, and the structure of speed changer and gearshift flexibility are not only to the vehicle transmission important influence, and simul relation is to the travelling comfort of driving.The axial length of existing shift of transmission structure is generally longer, makes speed changer occupy bigger space, when car load is arranged and install certain narrow limitation is arranged, dismounting inconvenience, and the waste lot of manpower and material resources, less economical.

Summary of the invention

The purpose of this utility model is to overcome the deficiency that exists in the above-mentioned technology, provides a kind of simple in structure, reasonable in design, can effectively reduce the new work transmission gearshift of shift of transmission structure axial length.

In order to achieve the above object, the technical solution adopted in the utility model is: comprise gear arm, declutch shift shaft, the axis of guide, five grades of shift forks and reverse gear control fork, described five grades of shift forks are provided with C type collar, offer corresponding collar mounting groove on the declutch shift shaft and the axis of guide, the described declutch shift shaft and the axis of guide are positioned at reverse gear control and stick, described five grades of shift forks are positioned on the declutch shift shaft and the axis of guide, described gear shift arm 1 links to each other with declutch shift shaft by first bearing pin, described reverse gear control is stuck and is provided with the second pin slide groove, described second bearing pin is positioned on the declutch shift shaft, be provided with the opposed hemispherical groove between the described declutch shift shaft and the axis of guide and constitute first ball-and-socket and second ball-and-socket, described first ball-and-socket is positioned at five grades of shift forks, first steel ball is installed in first ball-and-socket, described second ball-and-socket is positioned at reverse gear control fork, second steel ball is installed in second ball-and-socket, be provided with the 3rd ball-and-socket and the 4th ball-and-socket that links to each other with reverse gear control fork connecting place on the described axis of guide, be provided with the 5th ball-and-socket that links to each other successively with the case of transmission connecting place on the described declutch shift shaft, the 6th ball-and-socket and the 7th ball-and-socket, be provided with spring and the 3rd steel ball in the reverse gear control fork, described the 3rd steel ball is positioned at the 3rd ball-and-socket.

The utility model has the advantages that:

Simple in structure, reasonable in design, cost is lower, can effectively reduce the coupling flexibility that the gearbox selector axial length has improved speed changer, makes dismounting convenient, is convenient to maintenance maintenance.

Description of drawings

Schematic representation when Fig. 1 is the utility model structure neutral;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the right elevation of Fig. 1;

Schematic representation when Fig. 4 is the utility model structure 5 retainings;

Fig. 5 is the schematic representation of the utility model structure when reversing gear.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

By Fig. 1-Fig. 5 as can be known, the utility model comprises gear arm 1, declutch shift shaft 2, the axis of guide 3, five grades of shift forks 4 and reverse gear control fork 5, described five grades of shift forks 4 are provided with C type collar 6, offer corresponding collar mounting groove on the declutch shift shaft 2 and the axis of guide 3, the described declutch shift shaft 2 and the axis of guide 3 are positioned on the reverse gear control fork 5, described five grades of shift forks 4 are positioned on the declutch shift shaft 2 and the axis of guide 3, described gear shift arm 1 links to each other with declutch shift shaft 2 by first bearing pin 7, described reverse gear control fork 5 is provided with the second pin slide groove 8, described second bearing pin 9 is positioned on the declutch shift shaft 2, be provided with the opposed hemispherical groove between the described declutch shift shaft 2 and the axis of guide 3 and constitute first ball-and-socket 10 and second ball-and-socket 11, described first ball-and-socket 10 is positioned at five grades of shift forks 4, first steel ball 12 is installed in first ball-and-socket 10, described second ball-and-socket 11 is positioned at reverse gear control fork 5, second steel ball 13 is installed in second ball-and-socket 11, be provided with the 3rd ball-and-socket 14 and the 4th ball-and-socket 15 that links to each other with reverse gear control fork 5 connecting places on the described axis of guide 3, be provided with the 5th ball-and-socket 16 that links to each other successively with the case of transmission connecting place on the described declutch shift shaft 2, the 6th ball-and-socket 17 and the 7th ball-and-socket 18, be provided with spring 19 and the 3rd steel ball 20 in the reverse gear control fork 5, described the 3rd steel ball 20 is positioned at the 3rd ball-and-socket 14.

Working principle of the present utility model is:

Neutral position: as shown in Figure 1, declutch shift shaft 2 is in parastate after installing with the axis of guide 3, first steel ball 12 is positioned at first ball-and-socket 10, second steel ball 13 is positioned at second ball-and-socket 11, the 3rd steel ball 20 is positioned at the 4th ball-and-socket 15, the 6th ball-and-socket 17 links to each other with case of transmission, and the casing baffle plate is fixed in the axis of guide 3 quilts, axially can not move.

Hang five grades: as shown in Figure 4, gear shift arm 1 drives declutch shift shaft 2 to left movement, drives five grades of shift forks 4 to left movement under the effect of C shape collar 6, finishes and hangs five grades of actions.Because five grades of shift forks 4 and declutch shift shaft 2 are simultaneously to left movement, first steel ball 12 is pressed into the hemisphere nest that first ball-and-socket 10 is positioned at declutch shift shaft 2, declutch shift shaft 2 is to left movement and reverse gear control fork 5 and not motion of the axis of guide 3, second bearing pin 9 slides left in the second pin slide groove 8 and the position of second steel ball 13 remains unchanged, and the 3rd steel ball 20 is positioned at the 4th ball-and-socket 15.

Hanging five grades of gears that make the return trip empty puts: gear shift arm 1 drives the right motion of declutch shift shaft 2, and declutch shift shaft 2 moves right by five grades of shift forks 4 of first steel ball, 12 drives and gets back to neutral position, position when second bearing pin 9 is also got back to neutral gear simultaneously.

Hang reverse gear: gear shift arm 1 drives the right motion of declutch shift shaft 2, because of the axis of guide 3 can not axial motion, so the C shape collar 6 that five grades of shift forks 4 are directed on the axle 3 stop, not along with declutch shift shaft 2 moves right.Declutch shift shaft 2 drives reverse gear control fork 5 by second bearing pin, 9 structures and moves right, when the 3rd steel ball 20 in the reverse gear control fork 5 when the 3rd ball-and-socket 14 on the axis of guide 3 contact, 14 position-limiting actions of the 3rd ball-and-socket at this moment, motion stops, and finishes the extension reverse gear and moves.This moment, first steel ball 12 was positioned at hemisphere nest one side of the axis of guide 3 at first ball-and-socket, and second steel ball 13 is pressed into the hemisphere nest that second ball-and-socket 11 is positioned at declutch shift shaft 2.

Plucking the reverse gear gear that makes the return trip empty puts: gear shift arm 1 drives the left movement of declutch shift shaft 2, declutch shift shaft 2 drives reverse gear control fork 5 by second steel ball 13 and moves right, when the 3rd steel ball 20 in the reverse gear control fork 5 with limited after the 4th ball-and-socket 15 contacts, neutral position is got back in declutch shift shaft 2 stop motions.

Dismounting C shape collar: when dismounting C shape collar 6, can make two collars not on same plane by first gearing in, C shape collar 6 can be disassembled very easily with special tool.

Claims (1)

1. new work transmission gearshift, comprise gear arm (1), declutch shift shaft (2), the axis of guide (3), five grades of shift forks (4) and reverse gear control fork (5), it is characterized in that: described five grades of shift forks (4) are provided with C type collar (6), offer corresponding collar mounting groove on the declutch shift shaft (2) and the axis of guide (3), the described declutch shift shaft (2) and the axis of guide (3) are positioned on the reverse gear control fork (5), described five grades of shift forks (4) are positioned on the declutch shift shaft (2) and the axis of guide (3), described gear shift arm (1) links to each other with declutch shift shaft (2) by first bearing pin (7), described reverse gear control fork (5) is provided with the second pin slide groove (8), described second bearing pin (9) is positioned on the declutch shift shaft (2), be provided with the opposed hemispherical groove between the described declutch shift shaft (2) and the axis of guide (3) and constitute first ball-and-socket (10) and second ball-and-socket (11), described first ball-and-socket (10) is positioned at five grades of shift forks (4), first steel ball (12) is installed in first ball-and-socket (10), described second ball-and-socket (11) is positioned at reverse gear control fork (5), second steel ball (13) is installed in second ball-and-socket (11), the described axis of guide (3) is gone up with reverse gear control fork (5) connecting place and is provided with the 3rd ball-and-socket (14) and the 4th ball-and-socket (15) that links to each other, described declutch shift shaft (2) is gone up and is provided with the 5th ball-and-socket (16) that links to each other successively with the case of transmission connecting place, the 6th ball-and-socket (17) and the 7th ball-and-socket (18), be provided with spring (19) and the 3rd steel ball (20) in the reverse gear control fork (5), described the 3rd steel ball (20) is positioned at the 3rd ball-and-socket (14).

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