CN207454750U

CN207454750U - Shift assembly and gearbox designs

Info

Publication number: CN207454750U
Application number: CN201721435998.3U
Authority: CN
Inventors: 杨建明
Original assignee: Jiangsu Defended Masterson Power Technology Co Ltd
Current assignee: Jiangsu Defended Masterson Power Technology Co Ltd
Priority date: 2017-10-31
Filing date: 2017-10-31
Publication date: 2018-06-05
Anticipated expiration: 2027-10-31

Abstract

The utility model discloses a kind of shift assembly and gearbox designs.Shift assembly includes camshaft and shift fork component, and shift slot is offered on camshaft, and shift fork component offers shift fork hole and mounting hole, and mounting hole is for installing position stop piece, and camshaft wears shift fork hole, and position stop piece is caught in shift slot.In the utility model embodiment, shift fork component is integrated on camshaft, forms integral structure so that the structure of shift assembly is compacter, improves the packaging efficiency of shift assembly.Meanwhile position of the rotation adjustment position stop piece in shift slot for passing through camshaft so that shift transformation is more steady, and position stop piece stress in shift slot also evenly, reduces the abrasion of shift assembly, extends the service life of shift assembly.

Description

Shift assembly and gearbox designs

Technical field

The utility model is related to automobile gearbox field more particularly to a kind of shift assemblies and gearbox designs.

Background technology

The gearbox designs of automobile generally comprise shifting cam axis and shift fork component, are offered on shifting cam axis curved Slot is provided with shift fork hole and small round platform on shift fork component.Shift fork axle passes through shift fork hole, and shift fork component is fixed on gearbox designs On, and roundlet decometer enters in the spoon bar of shifting cam axis, shifting cam axis rotates to drive the small round platform of shift fork in spoon bar Different gear effects is just realized in middle movement when being moved to different position in shaped groove.

But in this structure, shifting fork structure and camshaft separation add the cost of processing and manufacturing and the difficulty of assembling. Meanwhile small round platform unbalance stress in spoon bar, easily wear.And to ensure speed change during the gearbox assembling of this structure The verticality of shift fork axle and the concentricity in hole are installed, technological requirement is higher on case.

Utility model content

A kind of shift assembly that the utility model embodiment provides, including camshaft and shift fork component, the camshaft On offer shift slot, the shift fork component offers shift fork hole and mounting hole, and the mounting hole is described for installing position stop piece Camshaft wears the shift fork hole, and the position stop piece is caught in the shift slot.

In the utility model embodiment, shift fork component is integrated on camshaft, forms integral structure so that shift assembly Structure it is compacter, improve the packaging efficiency of shift assembly.Meanwhile position stop piece is adjusted in gear by the rotation of camshaft Position in slot so that shift transformation is more steady, and position stop piece stress in shift slot also evenly, reduces shift assembly Abrasion extends the service life of shift assembly.

In some embodiments, the camshaft and shift fork interporal lacuna cooperation.

In some embodiments, the shift slot, the position stop piece and the mounting hole have 2 respectively, 2 gears Position slot is oppositely arranged, and 2 mounting holes and 2 position stop pieces are correspondingly arranged on the shift slot, 2 position stop pieces Synchronizing moving.

In some embodiments, the madial wall clearance fit of the position stop piece and the shift slot.

In some embodiments, the shift slot is of a straight line type and along the periphery EDS maps and madial wall of the camshaft Recess forms multiple sub- shift slots.

The utility model embodiment provides a kind of gearbox designs, including the gearshift group described in as above any embodiment Part, output shaft, first gear and second gear, shift fork component include shift fork set, and the shift fork component connects the shift fork set, institute It states first gear and the second gear is arranged on the output shaft, the shift fork component drives the shift fork set to move horizontally So that the shift fork set connects the first gear and the second gear respectively.

In the utility model embodiment, shift fork component is integrated on camshaft, forms integral structure so that gearbox knot Structure is compacter, improves packaging efficiency.Meanwhile position of the position stop piece in shift slot is adjusted by the rotation of camshaft, make Shift transformation is more steady, position stop piece stress in shift slot also evenly, reduces the abrasion of gearbox designs, extends The service life of gearbox designs.

In some embodiments, the first gear and the second gear coordinate with the output shaft clearance.

In some embodiments, the gearbox designs further include shift fork sleeve gear, and the shift fork sleeve gear is arranged on Couple between the first gear and the second gear and with the output shaft spline, the shift fork set and the shift fork cover tooth Wheel is engaged by gear and connected.

In some embodiments, input shaft assembly and transition shaft assembly are further included, the input shaft assembly includes input Gear, the transition shaft assembly include First Transition gear and the second transition gear, the input gear and second transition Gear engages, the First Transition gear and first gear engagement.

In some embodiments, bearing, the bearing and first tooth are provided on input shaft and the output shaft Wheel, the second gear, the transition axis component be arranged at intervals and between be provided with washer.

The additional aspect and advantage of the utility model embodiment will be set forth in part in the description, partly will be under Become apparent in the description in face or recognized by the practice of the utility model.

Description of the drawings

In description of the above-mentioned and/or additional aspect and advantage of the utility model from combination accompanying drawings below to embodiment It will be apparent and be readily appreciated that, wherein：

Fig. 1 is the stereoscopic schematic diagram of the gearbox designs of the utility model embodiment；

Fig. 2 is the dimensional structure diagram of the gearbox designs of the utility model embodiment；

Fig. 3 is another dimensional structure diagram of the gearbox designs of the utility model embodiment；

Fig. 4 is the dimensional decomposition structure diagram of the gearbox designs of the utility model embodiment；

Fig. 5 is the floor map of the gearbox designs of the utility model embodiment；

Fig. 6 is another floor map of the gearbox designs of the utility model embodiment；

Fig. 7 is the dimensional structure diagram of the shift assembly of the utility model embodiment；

Fig. 8 is the dimensional structure diagram of the camshaft of the utility model embodiment.

Specific embodiment

The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein Same or similar label represents same or similar element or has the function of same or like element from beginning to end.Lead to below It crosses the embodiment being described with reference to the drawings to be exemplary, is only used for explaining the utility model, and it is not intended that this practicality New limitation.

In the description of the utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", The orientation or position relationship of the instructions such as " clockwise ", " counterclockwise " be based on orientation shown in the drawings or position relationship, be only for Convenient for description the utility model and simplify description rather than instruction or imply signified device or element must have it is specific Orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.In addition, term " first ", " second " is only used for description purpose, and it is not intended that indicating or implying relative importance or imply the technology indicated by indicating The quantity of feature." first " is defined as a result, the feature of " second " can be expressed or implicitly include one or more The feature.In the description of the utility model, " multiple " are meant that two or more, unless otherwise clearly specific It limits.

, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally Connection；Can be mechanically connected or be electrically connected or can mutually communicate；It can be directly connected, it can also be in Between medium be indirectly connected, can be the interaction relationship of connection inside two elements or two elements.For this field For those of ordinary skill, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.

In the description of the utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it " under " can be contacted directly including the first and second features, it is not directly to connect that can also include the first and second features It touches but passes through the other characterisation contact between them.Moreover, fisrt feature second feature " on ", " top " and " on Face " includes fisrt feature directly over second feature and oblique upper or to be merely representative of fisrt feature level height special higher than second Sign.Fisrt feature second feature " under ", " lower section " and " below " include fisrt feature immediately below second feature and obliquely downward Side is merely representative of fisrt feature level height less than second feature.

Following disclosure provides many different embodiments or example is used for realizing the different structure of the utility model. In order to simplify the disclosure of the utility model, hereinafter the component and setting of specific examples are described.Certainly, they are only Example, and purpose does not lie in limitation the utility model.In addition, the utility model can in different examples repeat reference numerals And/or reference letter, this repetition are for purposes of simplicity and clarity, itself not indicate discussed various embodiments And/or the relation between setting.In addition, various specific techniques and the example of material that the utility model provides, but this Field those of ordinary skill can be appreciated that the application of other techniques and/or the use of other materials.

Please refer to Fig.1-Fig. 8, a kind of shift assembly 100 that the utility model embodiment provides, including 10 He of camshaft Shift fork component 20 offers shift slot 12 on camshaft 10, and shift fork component 20 offers shift fork hole 22 and mounting hole 24, installation Hole 24 is for installing position stop piece 242, and camshaft 10 wears shift fork hole 22, and position stop piece 242 is caught in shift slot 12.

In the utility model embodiment, shift fork is integrated on camshaft 10, forms integral structure so that shift assembly 100 structure is compacter, improves the packaging efficiency of shift assembly 100.Meanwhile gear is adjusted by the rotation of camshaft 10 Position position of the part 242 in shift slot 12 so that shift transformation is more steady, and stress is also more in shift slot 12 for position stop piece 242 Uniformly, reduce the abrasion of shift assembly 100, extend the service life of shift assembly 100.

Specifically, the principle of the shift assembly 100 of present embodiment approximately as：Change position stop piece 242 in shift slot 12 In position so that the shift fork set 26 of connection shift fork component 20 and the cooperation of different size of gear, so as to different size of gear Friction speed and different rotary direction are passed to by output shaft 212 by shift fork set 26, reach speed change purpose.

But compared with the shift assembly 100 of the prior art, since the shift slot 12 in present embodiment is substantially rectilinear Type so that during conversion gear, the downthrust situation between the madial wall of position stop piece 242 and shift slot 12 is reduced, position stop piece 242 movement in shift slot 12 more smoothes out, so as to improve gearshift experience and driving experience.

In some embodiments, 22 clearance fit of camshaft 10 and shift fork hole.

In this way, it ensure that camshaft 10 can be freely rotated in shift fork hole 22, to change position stop piece 242 in shift slot 12 Position, realize gear shift operation.

Specifically, camshaft 10 is controlled by motor, is precisely realized and is rotated and stop.When camshaft 10 rotates, shift slot 12 also and then rotate, and, shift slot 12 was rotated due to 12 substantially rectilinear type of shift slot and with horizontal direction shape in an angle Position stop piece 242 is linked into different gears in the evolution of shift slot 12 in journey.

Further, it is whole in the horizontal direction to be also embodied by shift fork component 20 for movement of the position stop piece 242 in shift slot 12 On movement.It is engaged in this way, shift fork component 20 acts on shift fork set 26 with different size of gear, achievees the effect that speed change.

In some embodiments, shift slot 12, position stop piece 242 and mounting hole 24 have 2 respectively, 2 12 phases of shift slot To setting, 2 mounting holes 24 and 2 position stop pieces 242 are correspondingly arranged on shift slot 12,2 242 synchronizing movings of position stop piece.

In this way, double position stop pieces 242 on double shift slots 12 and shift fork component 20 on camshaft 10 coordinate simultaneously, enhance Stability and ride comfort when shift assembly 100 is shifted gears, reduce in shift process, position stop piece 242 and shift fork component 20 are sent out The raw situation rocked or waved, and then ensure that the engagement between shift fork component 20 and different gears is more stable and accurate.

Specifically, in present embodiment, orthographic projection and second of first shift slot 12 on second shift slot 12 Shift slot 12 forms axial symmetry.In this way, ensure that camshaft 10 in rotation process, two position stop pieces 242 are in two shift slots Synchronizing moving can be reached on 12, and then improve smooth-going when converting gear and stabilization.

In some embodiments, the madial wall clearance fit of position stop piece 242 and shift slot 12.

In this way, camshaft 10 rotates so that when position stop piece 242 moves in shift slot 12, reduces position stop piece 242 and gear Collision and friction between the madial wall of position slot 12, and then improve the ride comfort of the movement of position stop piece 242.Meanwhile it decreases The abrasion of position stop piece 242 extends the service life of position stop piece 242, improves the precision of gear shift operation.

Specifically, in the present embodiment, position stop piece 242 uses pin, and pin is rivetted on shift fork component 20, with dialling Fork member 20 forms integral structure.In this way, ensure that the integraty of pin and shift fork component 20, the pin in gear shift operation is avoided It is separated with shift fork component 20, influences the precision of gearshift, influence driving safety.

Further, the side wall of mounting hole 24 extends to form boss to the outside of shift fork component 20.In this way, it is easy to position stop piece 242 installations, improve stability of the position stop piece 242 in mounting hole 24.

In some embodiments, shift slot 12 is of a straight line type and recessed along the periphery EDS maps and madial wall of the camshaft It falls into and forms multiple sub- shift slots 122.

In this way, in 10 rotation process of camshaft, position stop piece 242 moves in shift slot 12, from different sub- shift slots 122 Contact, realizes the driving of different gears.

Specifically, sub- shift slot 122 is arc-shaped.In this way, position stop piece 242 moves between sub- shift slot 122, shifts one's position When, it is more smooth, will not quilt shift slot 122 block, so as to enhance the ride comfort of gearshift.

The utility model embodiment provides a kind of gearbox designs 200, the gearshift group including as above any embodiment Part 100, output shaft 212, first gear 214 and second gear 216, shift fork component 20 include shift fork and cover 26, and shift fork component 20 connects Shift fork set 26 is connect, first gear 214 and second gear 216 are arranged on output shaft 212, and shift fork component 20 drives shift fork set 26 It moves horizontally so that shift fork set 26 connects first gear 214 and second gear 216 respectively.

In the utility model embodiment, shift fork component 20 is integrated on camshaft 10, forms integral structure so that speed change Box structure 200 is compacter, improves packaging efficiency.Meanwhile position stop piece 242 is adjusted in shift slot by the rotation of camshaft 10 Position in 12 so that shift transformation is more steady, and the stress in shift slot 12 of position stop piece 242 also evenly, reduces speed change The abrasion of box structure 200 extends the service life of gearbox designs 200.

Specifically, the gearbox designs 200 in present embodiment, the radius of first gear 214 are more than second gear 216 Radius.Formed fluted on the side wall of shift fork set 26, the top of shift fork component 20 is stretched into groove, so as to which shift fork set 26 be driven to exist It is moved left and right in horizontal direction, is moved between first gear 214 and second gear 216 or is moved to first gear 214 On or be moved in second gear 216, realize shift speed change operation.

In some embodiments, first gear 214 and second gear 216 and 212 clearance fit of output shaft.

In this way, shift fork component 20 without and first gear 214 or second gear 216 contact when, first gear 214 It is located at idling conditions with second gear 216, output shaft 212 will not be driven to rotate.Only when user's control camshaft 10 rotates, gear Position part 242 is located at the corresponding position of shift slot 12, and when shift fork set 26 is moved on corresponding gear, gear, which rotates, can will just move Power passes to shift fork set 26, and shift fork set 26 drives output shaft 212 to rotate again, that is to say, that shift fork 28 acts on 26 movement of shift fork set Onto corresponding driven gear；Driven gear imparts power to shift fork set 26 and shift fork sleeve gear 218, while shift fork set again 26 and shift fork sleeve gear 218 drive output shaft 212 rotate, wherein, shift fork set 26, shift fork sleeve gear 218 it is synchronous with output shaft 212 It rotates.

In some embodiments, gearbox designs 200 further include shift fork sleeve gear 218, and shift fork sleeve gear 218 is arranged on Couple between first gear 214 and second gear 216 and with 212 spline of output shaft, shift fork set 26 and shift fork sleeve gear 218 pass through Gear engagement connection.

In this way, when shift fork set 26 and 218 gear of shift fork sleeve gear engage, first gear 214 and second gear 216 Idle running, output shaft 212 can not rotate, be equivalent to gearbox and be in neutral gear；When shift fork set 26 is moved to first gear 214 and shift fork When on sleeve gear 218, shift fork set 26 while and the first pinion gear 2142 and shift fork sleeve gear in first gear 214 218 engagements at this point, first gear 214 rotates, drive shift fork set 26 to rotate, and shift fork set 26 imparts power to shift fork sleeve gear 218, shift fork sleeve gear 218 and output shaft 212 rotate, this process synchronously occurs；Similarly, when shift fork set 26 is moved to the second tooth Wheel 216 and shift fork sleeve gear 218 on when, shift fork set 26 simultaneously and the second pinion gear 2162 in second gear 216 and Shift fork sleeve gear 218 engages, at this point, second gear 216 rotates, shift fork set 26 is driven to rotate, shift fork set 26 again transfers power To shift fork sleeve gear 218, so as to which shift fork sleeve gear 218 and output shaft 212 rotate, this process is also synchronous generation, to ensure to change The rapid and smooth-going of gear.

Specifically, in the present embodiment, output shaft 212 is connected with shift fork sleeve gear 218 by rectangular spline.In this way, It connects between shift fork sleeve gear 218 and output shaft 212 and more consolidates, rectangular spline improves shift fork sleeve gear 218 and drives output The stability that axis 212 rotates, avoids situation about skidding between shift fork sleeve gear 218 and output shaft 212, improves transmission effect Rate.

Specifically, the first protruding portion is provided in first gear 214, the first pinion gear is provided on the first protruding portion 2142, the second protruding portion is provided in second gear 216, and the second pinion gear 2162 is provided on the second protruding portion.Shift fork covers tooth Wheel 218 is arranged between the first protruding portion and the second protruding portion.Camshaft 10 rotates, and shift fork set 26 is driven to move up in the horizontal direction It is dynamic.Meanwhile the internal gear of shift fork set 26 engages simultaneously with the external gear of the first pinion gear 2142 and shift fork sleeve gear 218 so that First gear 214 imparts power to shift fork set 26, and passes to output shaft, so as to which output shaft be driven to rotate；Or it dials The internal gear of fork set 26 engages simultaneously with the external gear of the second pinion gear 2162 and shift fork sleeve gear 218 so that second gear 216 Shift fork set 26 is imparted power to, and passes to output shaft, so as to which output shaft be driven to rotate, completes gear shift operation.

In some embodiments, input shaft assembly 219 and transition shaft assembly 211 are further included, input shaft assembly 219 includes Input gear 2192, transition shaft assembly 211 include 2112 and second transition gear 2114 of First Transition gear, input gear 2192 It is engaged with the second transition gear 2114, First Transition gear 2112 and first gear 214 engage.

In this way, transition shaft assembly 211 realizes the speed change of output shaft 212 and deflecting operation.

Specifically, input gear 2192 drives the second transition gear 2114 and second gear 216 to rotate, the second transition tooth 2114 drive First Transition gear 2112 of wheel rotates, and First Transition gear 2112 drives first gear 214 to rotate again.

In some embodiments, bearing 213, bearing 213 and first gear are provided on input shaft and output shaft 212 214th, second gear 216,2112 and second transition gear 2114 of First Transition gear are arranged at intervals and bearing 213 and said gear Between be provided with washer 215.

In the present embodiment, washer 215 is equivalent to baffle ring, mainly plays position-limiting action, and the position of fixed gear prevents zero Part moves on the axial direction of output shaft or output shaft 212, influences the accuracy of shift transformation.

Further, oil sealing is additionally provided on input shaft and output shaft 212, oil sealing is arranged on outside bearing 213, and and axis Hold 213 close connections.

In the description of this specification, reference term " embodiment ", " certain embodiments ", " schematically implementation The description of mode ", " example ", " specific example " or " some examples " etc. means with reference to the embodiment or example description Particular features, structures, materials, or characteristics are contained at least one embodiment or example of the utility model.In this explanation In book, schematic expression of the above terms is not necessarily referring to identical embodiment or example.Moreover, the specific spy of description Sign, structure, material or feature can in an appropriate manner combine in any one or more embodiments or example.

While there has been shown and described that the embodiment of the utility model, those of ordinary skill in the art can manage Solution：A variety of to the progress of these embodiments can change in the case where not departing from the principle and objective of the utility model, change, It replaces and modification, the scope of the utility model is limited by claim and its equivalent.

Claims

1. a kind of shift assembly, which is characterized in that including camshaft and shift fork component, shift slot is offered on the camshaft, The shift fork component offers shift fork hole and mounting hole, and for installing position stop piece, the camshaft wears described the mounting hole Shift fork hole, the position stop piece are caught in the shift slot.

2. shift assembly according to claim 1, which is characterized in that the camshaft and shift fork interporal lacuna cooperation.

3. shift assembly according to claim 1, which is characterized in that the shift slot, the position stop piece and the installation Hole has 2 respectively, and 2 shift slots are oppositely arranged, and 2 mounting holes and 2 position stop pieces are correspondingly arranged at described On shift slot, 2 position stop piece synchronizing movings.

4. shift assembly according to claim 1, which is characterized in that between the madial wall of the position stop piece and the shift slot Gap coordinates.

5. shift assembly according to claim 1, which is characterized in that the shift slot is of a straight line type and along the camshaft Periphery EDS maps and madial wall be recessed to form multiple sub- shift slots.

6. a kind of gearbox designs, which is characterized in that including such as claim 1-5 any one of them shift assembly, output shaft, First gear and second gear, shift fork component include shift fork set, and the shift fork component connects the shift fork set, the first gear It is arranged on the second gear on the output shaft, the shift fork component drives the shift fork set to move horizontally so that described group Fork set connects the first gear and the second gear respectively.

7. gearbox designs according to claim 6, which is characterized in that the first gear and the second gear and institute State output shaft clearance cooperation.

8. gearbox designs according to claim 6, which is characterized in that the gearbox designs further include shift fork set tooth Wheel, the shift fork sleeve gear are arranged between the first gear and the second gear and couple with the output shaft spline, The shift fork set and the shift fork sleeve gear are engaged by gear to be connected.

9. gearbox designs according to claim 6, which is characterized in that input shaft assembly and transition shaft assembly are further included, The input shaft assembly includes input gear, and the transition shaft assembly includes First Transition gear and the second transition gear, described Input gear and second transition gear engagement, the First Transition gear and first gear engagement.

10. gearbox designs according to claim 9, which is characterized in that be provided with axis on input shaft and the output shaft Hold, the bearing and the first gear, the second gear, the transition axis component be arranged at intervals and between be provided with pad Circle.