Gear automobile gear-box gear-shifting mechanism assembly
Technical field
The utility model relates to a kind of auto parts machinery, specifically refers to a kind of gear automobile gear-box gear-shifting mechanism assembly.
Background technique
Gear automobile gear-box gear-shifting mechanism assembly comprises casing and is arranged at has shift shaft assembly, selector fork assembly and the oscillating arm bracket assembly that reverses gear in casing, and wherein shift shaft assembly is in automobile gearbox, for gear selecting and gear-change operation.Traditional shift shaft assembly includes gearshift control housing, shift shaft and master collet, master collet fixed cover is located on shift shaft, guide sleeve is vertically arranged with in gearshift control housing, described shift shaft circumference is rotated, move axially and be arranged in guide sleeve, master collet is positioned at gearshift control housing, gearshift control housing is provided with two and compresses lock fit to be respectively used to the retainer of gear selecting and gear shift with the outer side surface of master collet, and retainer comprises integrated housing, shell end is rolled and is provided with master collet to the ball of joining, braking roll is imposed on stopping power by ball, but be mostly one-body molded and ball is in long-time state of wear due to retainer, therefore once ball will be changed whole retainer due to the excessive stop stability that affects of wearing and tearing, increase maintenance cost on the one hand, waste resource on the other hand.
Summary of the invention
For the deficiency that prior art exists, without the need to the gear automobile gear-box gear-shifting mechanism assembly of integral replacing after the purpose of this utility model is to provide a kind of ball to wear and tear.
For achieving the above object, the utility model provides following technological scheme: comprising casing and being arranged at has shift shaft assembly in casing, selector fork assembly and the oscillating arm bracket assembly that reverses gear, the action of selector fork assembly is driven to the oscillating arm bracket assembly that reverses gear by described selector fork assembly, described shift shaft assembly comprises gearshift control housing, shift shaft and master collet, described master collet fixed cover is located on shift shaft, guide sleeve is vertically arranged with in described gearshift control housing, described shift shaft circumference is rotated, move axially and be arranged in guide sleeve, described master collet is positioned at gearshift control housing cavity, described gearshift control housing is provided with two and compresses lock fit to be respectively used to the retainer of gear selecting and gear shift with the outer side surface of master collet, it is characterized in that: the position that described gearshift control housing is corresponding with retainer is provided with for installing retainer and by the extraneous mounting hole with gearshift control housing cavity UNICOM, the outer side surface of described mounting hole and gearshift control housing cavity connection position and master collet is in being oppositely arranged, described retainer comprises outer retaining shell, interior retaining shell, retaining spring, location and installation plate and stop ball, described outer retaining shell and interior retaining shell are the tubbiness component that opening is oppositely arranged, the inner peripheral surface of described outer retaining shell and the outer circumferential face shape of interior retaining shell suitable and in screw-thread fit, described location and installation plate is positioned at retaining shell and along retaining shell axial slip, described interior retaining shell is arrange towards master collet away from the end of outer retaining shell, this end and location and installation plate form the installation cavity installing stop ball, described interior retaining shell is away from the end of outer retaining shell and location and installation plate being respectively arranged with the positioning hole stretched out for stop ball local, described retaining spring is installed with and is resetted to stop ball by location and installation plate between outer retaining shell and location and installation plate.
By adopting technique scheme, relative to the defect that retainer ball before cannot be changed, in of today, the location and installation plate of the spacing stop ball of retaining shell is movable setting, the openable stop of taking-up simultaneously ball, the location that interior retaining shell and location and installation plate are arranged then makes stop ball roll in the scope limited, can not axis or radial displacement, enough stability is also ensure that under reducing the prerequisite of maintenance cost, the installation environment that outer retaining shell and interior retaining shell form sealing avoids foreign material to enter, retaining spring then makes location and installation plate after installation is complete can not arbitrarily movement, by the cooperation degree of depth of outer retaining shell and interior retaining shell also adjustable retaining spring to the pressure of location and installation plate, stop ball is made to keep most suitable rolling pressure.
The utility model is set to further: described mounting hole inner peripheral surface is provided with the elasitic layer fitted with outer retaining shell outer circumferential face, and described elasitic layer increases gradually along the extraneous direction thickness to gearshift control housing cavity.
By adopting technique scheme, elasitic layer fully fills the gap between mounting hole and retainer, make retainer installation rear stability better, elasitic layer increases along the extraneous direction thickness to gearshift control housing cavity the Simultaneous Stabilization being convenient to its installation gradually and strengthens further.
The utility model is set to further: described interior retaining shell is provided with the inwall suitable with stop ball shape away from the end of outer retaining shell around positioning hole.
By adopting technique scheme, interior retaining shell is provided with the inwall suitable with stop ball shape, be convenient to initial position when installing on the one hand, another aspect cooperation location and installation plate resistance stop ball mutually internal retaining shell carries out radial displacement, improves installation stability further.
The utility model is set to further: described gearshift control housing is positioned at mounting hole and extraneous connection position is provided with retainer limit assembly, this retainer limit assembly comprises the limiting board and restraining groove that block mutually and join, this limiting board rotates and is arranged at the top that gearshift control housing is positioned at mounting hole, described limiting board is in the semi-circular shape arranged towards retainer, corresponding with limiting board position on the outer circumferential face that described restraining groove is positioned at outer retaining shell.
By adopting technique scheme, retainer limit assembly carries out axial limiting to retainer after retainer installation, be subject to gravity effect, the limiting board of semi-circular shape can rotate the interior card that formed of the restraining groove snapping in outer retaining shell and join, the top that limiting board is positioned at mounting hole avoids it surprisingly to deviate from work, affects spacing stability.
The utility model is set to further: the width of described restraining groove increases to the direction of restraining groove both sides gradually with in the middle part of restraining groove, with limiting board interference fit in the middle part of described restraining groove.
By adopting technique scheme, the wider width of restraining groove both sides makes limiting board be easier to enter restraining groove, and a wherein inwall of restraining groove of fitting in the process that limiting board presses down, carrying out pressing to it guides it to move axially to normal place, and be not easily be separated with limiting board after retainer accurate contraposition with limiting board interference fit in the middle part of restraining groove, keep installment state.
The utility model is set to further: described shift shaft is provided with can along shifting shaft move axially and with the gear shift reversal means of shifting shaft synchronous axial system, described selector fork assembly comprises gearshift slide plate and gear shift fork, described gearshift slide plate one end is oppositely arranged with gear shift reversal means as interlock end, described gearshift slide plate comprises a second gear gearshift slide plate, three or four gear slide plates, five grades of slide plates and the slide plate that reverses gear, a described second gear gearshift slide plate, three or four gear slide plates and five grades of slide plates respectively corresponding linkage are provided with one or two gear shift forks, three or four gear shift forks and five grades of gear shift forks, the described slide plate that reverses gear links relatively, and the other end is corresponding with the oscillating arm bracket assembly that reverses gear arranges for end, the described oscillating arm bracket assembly that reverses gear comprises oscillating arm bracket, back fork, Compress Spring and ball stud, described back fork rotates and is arranged at oscillating arm bracket, described ball stud one end and back fork UNICOM are arranged, the other end is provided with spheroid to being assigned in casing inner wall, described Compress Spring is installed with between spheroid and back fork, described back fork comprises the pin at main body and two ends, one of them pin is provided with the interlock that the U-groove bevel of joining with gear shift reversal means card forms back fork and gear shift reversal means.
By adopting technique scheme, the axis of gear shift reversal means and circumference move, as linked manner, action are passed to gearshift slide plate, the gear shift fork linked by gearshift slide plate carries out transmitting separately with automobile miscellaneous part signal again, and action is first passed to the oscillating arm bracket assembly that reverses gear by the slide plate that wherein reverses gear, the Compress Spring reversed gear on oscillating arm bracket assembly coordinates ball stud to make back fork when opening and closing switches along casing slippage, radian due to casing inner wall provides back fork to provide an auxiliary force, rapidly opened and closed, make to reverse gear more convenient to operate.
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Accompanying drawing explanation
Fig. 1 is the stereogram of shift shaft assembly in the utility model embodiment;
Fig. 2 is the stereogram of selector fork assembly in the utility model embodiment;
Fig. 3 is the stereogram of oscillating arm bracket assembly of reversing gear in the utility model embodiment;
Fig. 4 is the plan view of shift shaft assembly in the utility model embodiment;
Fig. 5 is the enlarged view of A in Fig. 2;
Fig. 6 be in Fig. 2 B to sectional view;
Fig. 7 is the enlarged view of C in Fig. 4.
Embodiment
As shown in Fig. 1-Fig. 7, the utility model discloses a kind of gear automobile gear-box gear-shifting mechanism assembly, comprise casing and be arranged at and have shift shaft assembly in casing, selector fork assembly and the oscillating arm bracket assembly that reverses gear, casing is conventional components, therefore do not draw in the accompanying drawings, the action of selector fork assembly is driven to the oscillating arm bracket assembly that reverses gear by selector fork assembly, shift shaft assembly includes gearshift control housing 1, shift shaft 2 and master collet 3, master collet 3 fixed cover is located on shift shaft 2, guide sleeve 4 is vertically arranged with in gearshift control housing 1, shift shaft 2 circumference is rotated, move axially and be arranged in guide sleeve 4, master collet 3 is positioned at gearshift control housing cavity 13, gearshift control housing 1 is provided with two and compresses lock fit to be respectively used to the retainer 5 of gear selecting and gear shift with the outer side surface of master collet 3, the position that gearshift control housing 1 is corresponding with retainer 5 is provided with for installing retainer 5 and by the extraneous mounting hole 11 with gearshift control housing cavity 13 UNICOM, the outer side surface of mounting hole 11 and gearshift control housing cavity 13 connection position and master collet 3 is in being oppositely arranged, retainer 5 comprises outer retaining shell 51, interior retaining shell 52, retaining spring 53, location and installation plate 54 and stop ball 55, the tubbiness component that outer retaining shell 51 and interior retaining shell 52 are oppositely arranged for opening, the inner peripheral surface of outer retaining shell 51 and the outer circumferential face shape of interior retaining shell 52 suitable and in screw-thread fit, location and installation plate 54 is positioned at retaining shell 52 and along retaining shell 52 axial slip, interior retaining shell 52 is arrange towards master collet 3 away from the end of outer retaining shell 51, this end and location and installation plate 54 form the installation cavity 56 installing stop ball 55, interior retaining shell 52 is away from the end of outer retaining shell 51 and location and installation plate 54 being respectively arranged with the positioning hole 57 stretched out for stop ball 55 local, retaining spring 53 is installed with and is resetted to stop ball 55 by location and installation plate 54 between outer retaining shell 51 and location and installation plate 54, relative to the defect that retainer ball before cannot be changed, in of today, the location and installation plate 54 of the spacing stop ball 55 of retaining shell 52 is movable setting, the openable stop of taking-up simultaneously ball 55, the location that interior retaining shell 52 and location and installation plate 54 are arranged then makes stop ball 55 roll in the scope limited, can not axis or radial displacement, enough stability is also ensure that under reducing the prerequisite of maintenance cost, the installation environment that outer retaining shell 51 and interior retaining shell 52 form sealing avoids foreign material to enter, retaining spring 53 then makes location and installation plate 54 after installation is complete can not arbitrarily movement, by the pressure of the cooperation degree of depth of outer retaining shell 51 and interior retaining shell 52 also adjustable retaining spring 53 pairs of location and installation plates 54, stop ball 55 is made to keep most suitable rolling pressure.
Mounting hole 11 inner peripheral surface is provided with the elasitic layer 12 fitted with outer retaining shell 51 outer circumferential face, the direction thickness of elasitic layer 12 along the external world to gearshift control housing cavity 13 increases gradually, elasitic layer 12 fully fills the gap between mounting hole 11 and retainer 5, make retainer 5 installation rear stability better, elasitic layer 12 increases to the direction thickness of gearshift control housing cavity 13 Simultaneous Stabilization being convenient to its installation along the external world gradually and strengthens further.
Interior retaining shell 52 is provided with the inwall 521 suitable with stop ball 55 shape away from the end of outer retaining shell 51 around positioning hole 57, interior retaining shell 52 is provided with the inwall 521 suitable with stop ball 55 shape, be convenient to initial position when installing on the one hand, location and installation plate 54 is coordinated to stop the mutually internal retaining shell 52 of stop ball 55 to carry out radial displacement on the other hand, stability is installed in further raising, and in the utility model embodiment mode, inwall 521 and positioning hole 57 are integrally connected setting.
Gearshift control housing 1 is positioned at mounting hole 11 and extraneous connection position is provided with retainer limit assembly, this retainer limit assembly comprises the limiting board 6 and restraining groove 61 that block mutually and join, this limiting board 6 rotates and is arranged at the top that gearshift control housing 1 is positioned at mounting hole 11, limiting board 6 is in the semi-circular shape arranged towards retainer 5, corresponding with limiting board 6 position on the outer circumferential face that restraining groove 61 is positioned at outer retaining shell 51, retainer limit assembly carries out axial limiting to retainer 5 after retainer 5 installation, be subject to gravity effect, the limiting board 6 of semi-circular shape can rotate the interior card that formed of the restraining groove 61 snapping in outer retaining shell 51 and join, the top that limiting board 6 is positioned at mounting hole 11 avoids it surprisingly to deviate from work, affect spacing stability.
The width of restraining groove 61 increases to the direction of restraining groove 61 both sides gradually with in the middle part of restraining groove 61, with limiting board 6 interference fit in the middle part of restraining groove 61, the wider width of restraining groove 61 both sides makes limiting board 6 be easier to enter restraining groove 61, and a wherein inwall of restraining groove 61 of fitting in the process that limiting board 6 presses down, carrying out pressing to it guides it to move axially to normal place, and be not easily be separated with limiting board 6 after retainer 5 accurate contraposition with limiting board 6 interference fit in the middle part of restraining groove 61, keep installment state.
Shift shaft 2 is provided with can along shifting shaft 2 move axially and with the gear shift reversal means 21 of shifting shaft 2 synchronous axial system, selector fork assembly comprises gearshift slide plate and gear shift fork, gearshift slide plate one end is oppositely arranged with gear shift reversal means 21 as interlock end, gearshift slide plate comprises a second gear gearshift slide plate 71, three or four gear slide plates 72, five grades of slide plates 73 and the slide plate 74 that reverses gear, one second gear gearshift slide plate 71, three or four gear slide plates 72 and five grades of slide plates 73 respectively corresponding linkage are provided with one or two gear shift forks 75, three or four gear shift forks 76 and five grades of gear shift forks 77, reverse gear slide plate 74 relatively interlock end the other end is corresponding with the oscillating arm bracket assembly that reverses gear arranges, the oscillating arm bracket assembly that reverses gear comprises oscillating arm bracket 8, back fork 81, Compress Spring 82 and ball stud 83, back fork 81 rotates and is arranged at oscillating arm bracket 8, ball stud 83 one end and back fork 81 UNICOM are arranged, the other end is provided with spheroid 831 to being assigned in casing inner wall, Compress Spring 82 is installed with between spheroid and back fork 81, back fork 81 comprises the pin 812 at main body 811 and two ends, one of them pin 812 is provided with and blocks with gear shift reversal means 21 interlock that the U-groove bevel 8121 of joining forms back fork 81 and gear shift reversal means 21, the axis of gear shift reversal means 21 and circumference move, as linked manner, action are passed to gearshift slide plate, the gear shift fork linked by gearshift slide plate carries out transmitting separately with automobile miscellaneous part signal again, and action is first passed to the oscillating arm bracket assembly that reverses gear by the slide plate that wherein reverses gear, the Compress Spring 82 reversed gear on oscillating arm bracket assembly coordinates ball stud 83 to make back fork 81 can along casing slippage when opening and closing switches, radian due to casing inner wall provides back fork 81 1 auxiliary forces, rapidly opened and closed, make to reverse gear more convenient to operate.