CN100520110C - Mini-car transfer case - Google Patents

Mini-car transfer case Download PDF

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Publication number
CN100520110C
CN100520110C CNB2007100931412A CN200710093141A CN100520110C CN 100520110 C CN100520110 C CN 100520110C CN B2007100931412 A CNB2007100931412 A CN B2007100931412A CN 200710093141 A CN200710093141 A CN 200710093141A CN 100520110 C CN100520110 C CN 100520110C
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CN
China
Prior art keywords
transfer case
synchronizer
gear
output shaft
tooth
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Application number
CNB2007100931412A
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Chinese (zh)
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CN101191534A (en
Inventor
张兴海
彭自力
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Chongqing Sokon Industry Group Co Ltd
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YUAN INNOVATION TECH Co Ltd
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Priority to CNB2007100931412A priority Critical patent/CN100520110C/en
Publication of CN101191534A publication Critical patent/CN101191534A/en
Application granted granted Critical
Publication of CN100520110C publication Critical patent/CN100520110C/en
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Abstract

The invention relates to a minicar transfer case, and a driving gear, a bull gear and a pinion gear are arranged inside a case body which is formed by butt joint of a front cover and a rear cover of the transfer case, wherein, the bull gear is arranged between the driving gear and the pinion gear and meshed with the driving gear and the pinion gear on by one; a synchronizer soldered tooth is sleeved on an annular lug boss on the front part of the pinion gear; a synchronous ring is movably sleeved on a hollow cone on the front end of the synchronizer soldered tooth; a synchronizer fixed tooth is arranged on a transfer case output shaft on the front side of the synchronous ring; a synchronizer soldered toothed sleeve is sleeved on the synchronizer fixed tooth; an annular groove is arranged on the external surface of the synchronizer soldered toothed sleeve; a roller of a shift fork mechanism is clamped into the annular groove. The invention can lead a minicar to select two-wheel drive or four-wheel drive according to actual conditions, and switching between the two-wheel drive and the four-wheel drive is convenient and operation is simple, thereby the invention has the advantages of great improvement of climbing ability of the minicar, effective improvement of trafficability of motor vehicles, and great convenience brought to travel of people.

Description

A kind of mini-car transfer case
Technical field
The present invention relates to a kind of transmission device of minicar, relate in particular to mini-car transfer case.
Background technique
At present, what minicar generally adopted is the rear wheel drive mode, and promptly the power of motor is delivered to gearbox earlier, and the output shaft by gearbox passes to back axle by rear propeller shaft again, rotates to drive trailing wheel, and car load travels forward or backward.The minicar that has only two rear wheel drives by the lower road surface of adhesion coefficient the time, can not provide enough big ground surface driving power; During particularly by muddy or frost boiling section, driving wheel is absorbed in mire easily or skids and can't drive, thereby has influenced the passing ability of automobile, brings great inconvenience for people's trip.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of mini-car transfer case that can make automobile adopt two-wheel drive or four-wheel drive, to improve the passing ability and the grade ability of minicar.
Technological scheme of the present invention is as follows: a kind of mini-car transfer case, comprise the driving gear that is assemblied on the output shaft of gear-box, its key is: described driving gear is positioned at the forward and backward lid of transfer case and docks formed casing, between the forward and backward lid of transfer case, also be supported with gearwheel and transfer case output shaft, wherein the rear portion of transfer case output shaft is by the Bearing Installation small gear, and the front end of transfer case output shaft stretches out from the front portion of transfer case protecgulum; Described gearwheel is positioned at the centre of driving gear and small gear, this gearwheel maximum, and respectively with driving gear and pinion; On the annular boss of small gear front portion, be set with the synchronizer soldered tooth, kink synchronizing ring on the hollow frustum of this synchronizer soldered tooth front end, and on the transfer case output shaft of synchronizing ring front side the synchronizer fixing tooth is installed, described synchronizer fixing tooth, synchronizing ring and synchronizer soldered tooth three's excircle is provided with shape and the identical external splines of size, and on the synchronizer fixing tooth suit synchronizer soldered tooth cover, the outer surface of this synchronizer soldered tooth cover has circular groove, the roller of one shifting fork mechanism snaps in this circular groove, and the declutch shift shaft of shifting fork mechanism upwards passes outside the transfer case protecgulum.
Adopt above technological scheme, the afterbody of traditional minicar gearbox is blocked, has a mating face that adapts with gearbox truncation surface shape size on the transfer case protecgulum, it is fixing that dock with the gearbox truncation surface on this mating face, makes driving gear on the output shaft of gear-box be placed in the forward and backward lid of transfer case and dock in the formed casing.Output shaft of gear-box still connects with back axle by rear propeller shaft, the transfer case output shaft connects with propons by front propeller shaft, and shifting fork mechanism is connected with transfer case Joystick in being arranged on operator cabin by flexible axle, under the control of transfer case Joystick, shifting fork mechanism can drive the synchronizer soldered tooth and be enclosed within the synchronizer fixing tooth, slippage on synchronizing ring and the synchronizer soldered tooth, make and separate between synchronizer fixing tooth and the synchronizer soldered tooth or joint, the minicar that transfer case of the present invention is housed like this can select have only the drive form of trailing wheel participation or the drive form that front and back wheels participates in simultaneously according to road conditions.
Among the present invention, when rotating under the driving of output shaft of gear-box at engine power, driving gear rotates with output shaft of gear-box, output shaft of gear-box is given back axle by rear propeller shaft with the transmission of power of motor, the driving trailing wheel rotates, and driving gear rotates by the large gear turn the small gear, when the synchronizer soldered tooth on the small gear annular boss and synchronizer fixing tooth are in separated state, the idle running of synchronizer soldered tooth, the transfer case output shaft does not rotate, this moment, minicar adopted two rear wheel drives, was suitable in pavement behavior travels down preferably; When the synchronizer soldered tooth on the small gear annular boss and synchronizer fixing tooth are in jointing state, the synchronizer soldered tooth drives the rotation of synchronizer fixing tooth by synchronizer soldered tooth cover, the synchronizer fixing tooth drives the transfer case output shaft again and rotates, make the transfer case output shaft give propons with a part of transmission of power of motor by front propeller shaft, rotate to drive front-wheel, this moment, the front and rear wheel of minicar all had driving force, strengthen the grade ability of minicar so greatly, effectively improved the passing ability of automobile.
For simplified structure, be convenient to install, above-mentioned shifting fork mechanism is made up of roller, shift fork, declutch shift shaft, declutch shift shaft output board and joint, wherein shift fork is positioned at the transfer case protecgulum, two ends in the shift fork fork is symmetrically installed with roller, the shank of shift fork is fixedlyed connected with the lower end of declutch shift shaft, the upper end of this declutch shift shaft upwards passes outside the transfer case protecgulum, and with one of the declutch shift shaft output board fixing, in the erection joint of the other end of declutch shift shaft output board.
The shank of above-mentioned shift fork is sleeved on the declutch shift shaft, between the two by bolt, is connected reliably between shift fork and the declutch shift shaft like this, and is easy for installation.
Bottom at above-mentioned transfer case protecgulum offers through hole, wears spring and locating stud in this through hole, and the outer end of through hole is sealed by threaded cap; One end of described locating stud stretches in the groove that is provided with on the shift fork fork end face, a butt of the other end of locating stud and spring, and the other end of spring is spacing by threaded cap.Spring is in the normal pressure state that contracts, and under the effect of spring, locating stud withstands shift fork, prevents that it from rocking, thereby has guaranteed that shift fork stirs the stationarity and the reliability of the motion of synchronizer soldered tooth cover.
Install for the ease of output shaft of gear-box, and make the more compact structure of transfer case bonnet, above-mentioned output shaft of gear-box is bearing on the transfer case bonnet by bearing, the front end of this output shaft of gear-box stretches out outside the transfer case protecgulum, stretches out the hollow frustum of the rear end of output shaft of gear-box postoperculum behind transfer case.
Front portion at above-mentioned transfer case protecgulum also is formed with hollow frustum, and described synchronizer fixing tooth, synchronizer soldered tooth cover and shift fork all are positioned at this hollow frustum, and the front end of described transfer case output shaft stretches out from this hollow frustum.The compact structure of transfer case protecgulum, volume are little like this, effectively reduce its cost of production.
For the ease of assembling, be connected by spline between the annular boss of above-mentioned synchronizer soldered tooth and small gear, the synchronizer soldered tooth is divided into forward and backward two sections, the excircle of synchronizer soldered tooth back segment is provided with external splines, the leading portion of synchronizer soldered tooth is hollow frustum, and the tapering of the tapering of this hollow frustum and synchronizing ring center hole adapts.
For the reliability that improves transmission and guarantee driving gear and small gear between the conformity of rotating, above-mentioned driving gear, gearwheel and small gear three's the center of circle point-blank, and driving gear and small gear equal and opposite in direction, rotation direction is identical.
Beneficial effect: the present invention have be skillfully constructed, reasonable in design, implement characteristics such as easy, it can make minicar select two-wheel drive or four-wheel drive for use according to actual conditions, and easy switching, manipulation are simply between two-wheel drive and the four-wheel drive, thereby strengthened the grade ability of minicar greatly, effectively improved the passing ability of automobile, for people's trip brings great convenience.
Description of drawings
Fig. 1 is an assembling schematic representation of the present invention.
Fig. 2 is the structure diagram of the present invention after being assembled together.
Fig. 3 is the structural representation of shifting fork mechanism among the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
As shown in Figure 1 and Figure 2, transfer case protecgulum 3 and transfer case bonnet 4 connect, and form the transfer case casing, pass through bolt between the forward and backward lid 3,4 of transfer case.The front portion of described transfer case protecgulum 3 one sides is formed with hollow frustum, and the shape size of the front-end face of transfer case protecgulum 3 opposite sides and gearbox 22 tail end faces adapts, so that by bolt the transfer case casing is fixed on the gearbox 22.The output shaft 1 of gearbox is bearing on the transfer case bonnet 4 by bearing, and the front end of this output shaft of gear-box 1 stretches out the front-end face of transfer case protecgulum 3, and stretches in the gearbox 22; Stretch out from the integrally formed hollow frustum in transfer case bonnet 4 rear portions the rear end of output shaft of gear-box 1, and can connect with rear propeller shaft 23.Be set with driving gear 2 on output shaft of gear-box 1, this driving gear 2 is positioned at the transfer case casing, and driving gear 2 can rotate with output shaft of gear-box 1.
From Fig. 1, Fig. 2 as can be known, gearwheel 9 and transfer case output shaft 6 are housed in the transfer case casing, wherein the afterbody of transfer case output shaft 6 is bearing on the transfer case bonnet 4 by bearing 25, the middle part of transfer case output shaft 6 is bearing on the transfer case protecgulum 3 by bearing 26, and bearing 26 is positioned at the hollow frustum of transfer case protecgulum 3, the front end of transfer case output shaft 6 stretches out the hollow frustum of transfer case protecgulum 3, and can connect with front propeller shaft 27, by bearing 7 small gear 8 is installed at the rear portion of transfer case output shaft 6.Described gearwheel 9 is made unitary whole formula structure for axle and gear, and the axle of this gearwheel 9 is bearing in respectively in the mounting hole of forward and backward lid 3, the 4 middle part correspondences of transfer case by two bearings 24.Described gearwheel 9 is positioned at the centre of driving gear 2 and small gear 8, gearwheel 9, driving gear 2 and small gear 8 threes' the center of circle point-blank, gearwheel 9 maximums wherein, and mesh one by one with driving gear 2 and small gear 8, and driving gear 2 and small gear 8 equal and opposite in directions, rotation direction is identical.
Also as can be known, be formed with annular boss 8a in the front portion of small gear 8 from Fig. 1, Fig. 2, this annular boss 8a goes up suit synchronizer soldered tooth 10, is connected by spline between synchronizer soldered tooth 10 and the annular boss 8a, and is spacing by back-up ring 5.Described synchronizer soldered tooth 10 is divided into forward and backward two sections, the excircle of synchronizer soldered tooth 10 back segments is provided with external splines, the leading portion of synchronizer soldered tooth 10 is hollow frustum, kink synchronizing ring 11 on this hollow frustum, the endoporus of synchronizing ring 11 is a cone shape hole, the tapering of hollow frustum adapts on the tapering of cone shape hole inwall and the synchronizer soldered tooth 10, and the external frame of synchronizing ring 11 is pre-small post-large stepped shape, also is provided with external splines on the excircle of synchronizing ring 11 rear end maximum diameter sections.On the transfer case output shaft 6 of described synchronizing ring 11 front sides synchronizer fixing tooth 12 is installed, is connected by spline between this synchronizer fixing tooth 12 and the transfer case output shaft 6, and spacing by bearing 26 and back-up ring 5.On the excircle of synchronizer fixing tooth 12, be provided with external splines equally, and synchronizer fixing tooth 12, synchronizing ring 11 and synchronizer soldered tooth 10 threes' external splines shape and big or small identical.Suit synchronizer soldered tooth cover 13 on described synchronizer fixing tooth 12, this synchronizer soldered tooth cover 13 is connected with synchronizer fixing tooth 12 by feather key 28, the hole wall that the synchronizer soldered tooth overlaps 13 center holes is provided with internal spline, and the outer surface at synchronizer soldered tooth cover 13 has the circular groove that connects with shifting fork mechanism, under the stirring of shifting fork mechanism, synchronizer soldered tooth cover 13 can make between synchronizer soldered tooth 10 and the synchronizer fixing tooth 12 to be bonded together by synchronizer soldered tooth cover 13 to 10 slippages of synchronizer soldered tooth.
From Fig. 1, Fig. 2 and Fig. 3 further as can be known, shifting fork mechanism is made up of roller 14, shift fork 15, declutch shift shaft 16, declutch shift shaft output board 17 and joint 18, wherein shift fork 15, synchronizer fixing tooth 12 and synchronizer soldered tooth cover 13 all are positioned at the hollow frustum of transfer case protecgulum 3, two ends in shift fork 15 forks is symmetrically installed with two rollers 14, and roller 14 snaps in the circular groove that the synchronizer soldered tooth overlaps 13 outer surfaces.The shank of shift fork 15 is sleeved on the lower end of declutch shift shaft 16, passes through bolt.The bottom of declutch shift shaft 16 is stretched in the mounting hole corresponding on the transfer case protecgulum 3, the upper end of declutch shift shaft 16 upwards passes outside the transfer case protecgulum 3, and with one of declutch shift shaft output board 17 fixing, declutch shift shaft output board 17 is perpendicular with declutch shift shaft 16, in the other end of declutch shift shaft output board 17 erection joint 18, joint 18 can be connected by the interior transfer case Joystick of flexible axle (not drawing among the figure) and operator cabin.
From Fig. 3, also as can be known, offer through hole, wear spring 19 and locating stud 20 in this through hole, and the outer end of through hole is by threaded cap 21 sealings in the bottom of transfer case protecgulum 3; One end of described locating stud 20 stretches in the groove that is provided with on the shift fork 15 fork end faces, a butt of the other end of locating stud 20 and spring 19, and the other end of spring 19 is spacing by threaded cap 21.Spring 19 is in the normal pressure state that contracts, and under the effect of spring 19, locating stud 20 withstands shift fork 15, prevents that it from rocking, thereby has guaranteed that shift fork 15 stirs the stationarity and the reliabilities of 13 motions of synchronizer soldered tooth cover.
Among the present invention, when rotating under the driving of output shaft of gear-box 1 at engine power, output shaft of gear-box 1 is given back axle by rear propeller shaft 23 with the transmission of power of motor, drives trailing wheel and rotates; Simultaneously, driving gear 2 on the output shaft of gear-box 1 rotates with output shaft of gear-box 1, driving gear 2 drives small gear 8 rotations by gearwheel 9, when synchronizer soldered tooth on the small gear 8 annular boss 8a 10 and synchronizer fixing tooth 12 are in separated state, 10 idle running of synchronizer soldered tooth, transfer case output shaft 6 does not rotate, and this moment, minicar adopted two rear wheel drives, is suitable in pavement behavior travels down preferably.When control transfer case Joystick connects, when making it by flexible axle pulling joint 18, declutch shift shaft 16 rotates around its axis under the effect of flexible axle, declutch shift shaft 16 drives the 13 direction slippages to synchronizer soldered tooth 10 of synchronizer soldered tooth cover by the roller on the shift fork 15 14, synchronizer soldered tooth cover 13 promotes synchronizing ring 11, make and produce friction between synchronizing ring 11 and the synchronizer soldered tooth 10, and synchronizing ring 11 also begins to rotate under the drive of frictional force, when the rotating speed of synchronizing ring 11 reaches consistent with the rotating speed of synchronizer soldered tooth 10, the rear end of synchronizer soldered tooth cover 13 slides on the synchronizer soldered tooth 10, synchronizer soldered tooth cover 13 is connected with synchronizer fixing tooth 12 splines with synchronizer soldered tooth 10 simultaneously like this, synchronizer soldered tooth 10 drives 12 rotations of synchronizer fixing tooth by synchronizer soldered tooth cover 13, synchronizer fixing tooth 12 drives transfer case output shaft 6 by feather key 28 again and rotates, make transfer case output shaft 6 give propons with a part of transmission of power of motor by front propeller shaft 27, rotate to drive front-wheel, this moment minicar before, trailing wheel all has driving force, strengthen the grade ability of minicar so greatly, effectively improved the passing ability of automobile.

Claims (8)

1, a kind of mini-car transfer case, comprise the driving gear (2) that is assemblied on the output shaft of gear-box (1), it is characterized in that: described driving gear (2) is positioned at the formed casing of the forward and backward lid of transfer case (3,4) butt joint, between the forward and backward lid of transfer case (3,4), also be supported with gearwheel (9) and transfer case output shaft (6), wherein small gear (8) is installed by bearing (7) in the rear portion of transfer case output shaft (6), and the front end of transfer case output shaft (6) stretches out from the front portion of transfer case protecgulum (3); Described gearwheel (9) is positioned at the centre of driving gear (2) and small gear (8), this gearwheel (9) maximum, and mesh with driving gear (2) and small gear (8) respectively; On the annular boss (8a) of small gear (8) front portion, be set with synchronizer soldered tooth (10), kink synchronizing ring (11) on the hollow frustum of this synchronizer soldered tooth (10) front end, and on the transfer case output shaft (6) of synchronizing ring (11) front side synchronizer fixing tooth (12) is installed, described synchronizer fixing tooth (12), synchronizing ring (11) and synchronizer soldered tooth (10) three's excircle is provided with shape and the identical external splines of size, and at the last suit synchronizer soldered tooth cover (13) of synchronizer fixing tooth (12), the outer surface of this synchronizer soldered tooth cover (13) has circular groove, the roller of one shifting fork mechanism (14) snaps in this circular groove, and the declutch shift shaft of shifting fork mechanism (16) upwards passes outside the transfer case protecgulum (3).
2, a kind of mini-car transfer case according to claim 1, it is characterized in that: described shifting fork mechanism is by roller (14), shift fork (15), declutch shift shaft (16), declutch shift shaft output board (17) and joint (18) are formed, wherein shift fork (15) is positioned at transfer case protecgulum (3), two ends in shift fork (15) fork is symmetrically installed with roller (14), the shank of shift fork (15) is fixedlyed connected with the lower end of declutch shift shaft (16), the upper end of this declutch shift shaft (16) upwards passes outside the transfer case protecgulum (3), and with one of declutch shift shaft output board (17) fixing, in the other end erection joint (18) of declutch shift shaft output board (17).
3, a kind of mini-car transfer case according to claim 2 is characterized in that: the shank of described shift fork (15) is sleeved on the declutch shift shaft (16), passes through bolt between the two.
4, a kind of mini-car transfer case according to claim 2 is characterized in that: the bottom at described transfer case protecgulum (3) offers through hole, wears spring (19) and locating stud (20) in this through hole, and the outer end of through hole is sealed by threaded cap (21); One end of described locating stud (20) stretches in the groove that is provided with on shift fork (15) the fork end face, a butt of the other end of locating stud (20) and spring (19), and the other end of spring (19) is spacing by threaded cap (21).
5, a kind of mini-car transfer case according to claim 1, it is characterized in that: described output shaft of gear-box (1) is bearing on the transfer case bonnet (4) by bearing, the front end of this output shaft of gear-box (1) stretches out outside the transfer case protecgulum (3), and stretch out from the hollow frustum at transfer case bonnet (4) rear portion the rear end of output shaft of gear-box (1).
6, a kind of mini-car transfer case according to claim 2, it is characterized in that: the front portion at described transfer case protecgulum (3) is formed with hollow frustum, described synchronizer fixing tooth (12), synchronizer soldered tooth cover (13) and shift fork (15) all are positioned at the hollow frustum of transfer case protecgulum (3), and the front end of described transfer case output shaft (6) stretches out from the hollow frustum of transfer case protecgulum (3).
7, a kind of mini-car transfer case according to claim 1, it is characterized in that: be connected by spline between the annular boss (8a) of described synchronizer soldered tooth (10) and small gear (8), synchronizer soldered tooth (10) is divided into forward and backward two sections, the excircle of synchronizer soldered tooth (10) back segment is provided with external splines, the leading portion of synchronizer soldered tooth (10) is hollow frustum, and the tapering of the tapering of this hollow frustum and synchronizing ring (11) center hole adapts.
8, a kind of mini-car transfer case according to claim 1, it is characterized in that: described driving gear (2), gearwheel (9) and small gear (8) three's the center of circle point-blank, and driving gear (2) and small gear (8) equal and opposite in direction, rotation direction is identical.
CNB2007100931412A 2007-12-14 2007-12-14 Mini-car transfer case Active CN100520110C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2007100931412A CN100520110C (en) 2007-12-14 2007-12-14 Mini-car transfer case

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2007100931412A CN100520110C (en) 2007-12-14 2007-12-14 Mini-car transfer case

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CN101191534A CN101191534A (en) 2008-06-04
CN100520110C true CN100520110C (en) 2009-07-29

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102211521B (en) * 2010-04-07 2013-06-19 江苏林海动力机械集团公司 Two-driving and four-driving switching device for all terrain vehicle
CN102001283B (en) * 2010-11-03 2013-03-27 王政中 Power drive device for multi- axle vehicle
CN104214285A (en) * 2014-08-12 2014-12-17 韶能集团韶关宏大齿轮有限公司 Reinforced six-gear speed-changing box directly connected with transfer case
CN108799420A (en) * 2017-04-29 2018-11-13 益阳天华两栖车艇有限公司 A kind of transfer gear box

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856121A (en) * 1972-06-13 1974-12-24 Nissan Motor Synchronizing device for manually operated power transmission mechanism
US5711186A (en) * 1996-07-26 1998-01-27 Kia Motors Corporation Reverse synchronizer mechanism of manual transmission for a vehicle
CN2582927Y (en) * 2002-09-21 2003-10-29 刘武山 Transfer box of front and rear driving vehicle driving system
CN2603752Y (en) * 2003-01-26 2004-02-18 杭州前进齿轮箱集团有限公司 Automobile transfer gear
CN2887650Y (en) * 2006-03-16 2007-04-11 朱柏山 Integral transfer case and driving axle of wild vehicle
CN201129409Y (en) * 2007-12-17 2008-10-08 重庆渝安创新科技(集团)有限公司 Minicar transfer case

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856121A (en) * 1972-06-13 1974-12-24 Nissan Motor Synchronizing device for manually operated power transmission mechanism
US5711186A (en) * 1996-07-26 1998-01-27 Kia Motors Corporation Reverse synchronizer mechanism of manual transmission for a vehicle
CN2582927Y (en) * 2002-09-21 2003-10-29 刘武山 Transfer box of front and rear driving vehicle driving system
CN2603752Y (en) * 2003-01-26 2004-02-18 杭州前进齿轮箱集团有限公司 Automobile transfer gear
CN2887650Y (en) * 2006-03-16 2007-04-11 朱柏山 Integral transfer case and driving axle of wild vehicle
CN201129409Y (en) * 2007-12-17 2008-10-08 重庆渝安创新科技(集团)有限公司 Minicar transfer case

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