CN207161685U - A kind of gear-box - Google Patents

Abstract

The utility model provides a kind of gear-box, for anti-lock braking system, including housing and be arranged in housing and with the planetary assemblies of the output shaft drive connection of motor, gear-box is additionally provided with end cap, housing is sheathed on the surface of motor and the direction of the output shaft to motor and stretched out, end cap is fixedly connected with the part for stretching out in motor of housing, the ring gear engaged with planetary assemblies is provided with end cap, the end face of end cap also sets up delivery outlet, planetary assemblies are interior located at end cap and are provided with output section, output section is stretched into delivery outlet, positioning bearing is arranged with output section and is rotatably coupled by positioning bearing with end cap, connecting shaft and output section drive connection.Output section is rotatably fixed on end cap by positioning bearing, planetary assemblies and the motor coaxle heart, planetary assemblies can only be in the plane internal rotation of the axis perpendicular to output shaft, effectively avoid planetary assemblies translation in the plane of vertical output axle axis, central gear and planetary gear side set are avoided, reduces drive noise.

Description

A kind of gear-box

Technical field

The utility model belongs to anti-lock technical field, more particularly to a kind of gear-box.

Background technology

It is more using parallel-axes gears wheel the or the form of belt transmission in anti-lock braking system, this two kinds of equal volumes of structure It is larger.As an improvement, in the prior art often using planetary assemblies as transmission mechanism, planetary assemblies have small volume, gearratio big The advantages of.

But now with technology, during using planetary assemblies as output element, planet carrier and planet in planetary assemblies Gear is in quick condition, gap between planetary gear and central gear be present due to existing, planetary gear and ring gear it Between gap be present, and there is gap in planetary gear and planetary gear shaft oneself, and planetary assemblies are on axial plane During rotation, can also translation in slight distance in the plane, cause to occur between planetary gear and central gear side set, gear passes Move the problems such as noise is big；Even if gear clearance reduces, the problem of transmission is not genial stuck be present.

Utility model content

The purpose of this utility model is to provide a kind of gear-box, it is intended to solves in prior art anti-lock braking system because of planet Component translation and caused by side set, the big technical problem of drive noise.

To achieve the above object, the technical solution adopted in the utility model is：A kind of gear-box, for anti-skid braking system System, including housing and be arranged in the housing and with the planetary assemblies of the output shaft drive connection of motor, the gear-box is also End cap is provided with, the housing is sheathed on the surface of the motor and the direction of the output shaft to the motor and stretched out, the end Lid is fixedly connected with the part for stretching out in motor of the housing, is provided with the end cap in being engaged with the planetary assemblies Gear ring, the end face of the end cap also set up delivery outlet, and the planetary assemblies are in the end cap and are provided with output section, described Output section is stretched into the delivery outlet, positioning bearing is arranged with the output section and by the positioning bearing and the end cap It is rotatably coupled, the connecting shaft and the output section drive connection.

Further, the planetary assemblies include central gear, at least two planetary gears, planet carrier, planetary gear shaft And output shelf, at least two boss are provided with the planet carrier, and the output shelf is abutted and consolidated with the end face of each boss Due on each boss, the output section in the output shelf, each planetary gear shaft be arranged at the boss it Between, the both ends of each planetary gear shaft are connected with the output shelf and the planet carrier respectively, and each planetary gear is arranged Engaged in the planetary gear shaft and with the ring gear, the central gear be engaged between each planetary gear and with The output shaft drive connection of motor.

Further, the planet carrier also includes retainer ring, and each boss is arranged in the retainer ring, the motor Output end face be provided with round platform, the Fixing shrink ring is on the round platform.

Further, annular gasket is additionally provided with the housing, the annular gasket is arranged at the output of the motor The inner ring sleeve of end face and the annular gasket is on the round platform.

Further, the planetary assemblies also include the connecting pole being correspondingly arranged with the boss, each connecting pole One end is provided with limiting section, is additionally provided with corresponding with the connecting pole on the planet carrier and runs through the boss and the fixation The connecting hole of ring, the limiting section abut the retainer ring, the other end of the connecting pole through the connecting hole and with it is described Output shelf is fixedly connected.

Further, it is recessed close to the end face of the motor to be provided with corresponding with the limiting section first for the retainer ring Position, each limiting section are correspondingly placed in first recess.

Further, the housing is provided with flange with the position that the end cap is connected, and is set on the excircle of the end cap Locating surface is put, the end cap is embedded in the housing and the locating surface abuts with the flange.

Further, the end cap includes end face portion and annular portion, and the annular portion is connected with the edge of the end face portion, The ring gear is arranged at the inner surface of the annular portion, and the delivery outlet is arranged in the end face portion.

Further, the output shelf also includes connecting portion in the form of annular discs, and the output section is arranged at the connecting portion On end face away from the motor and positioned at the center of the end face of the connecting portion.

Further, the output section and connecting shaft drive connection, the output section is provided with internal spline, the connecting shaft One end be provided with external splines corresponding with the internal spline, the external splines is connected with the internal spline.

The beneficial effects of the utility model：Gear-box of the present utility model is used for decelerating through motor and increases torsion, and gear-box is positioned at electricity Between machine and brake oil pump, specifically planetary assemblies are connected between motor and brake oil pump, and output section can by positioning bearing It is rotationally fixed on end cap, i.e., planetary assemblies are integrally rotatably fixed on end cap；End cap is fixed by housing and motor Connection, makes end cap be fixedly connected with motor, the relative position of end cap and output shaft is fixed, and planetary assemblies are integrally rotatably fixed When on end cap, the relative position between output shaft and planetary assemblies is also fixed；Therefore, when output shaft drives planetary assemblies During rotation, planetary assemblies can only effectively avoid planetary assemblies and hanging down in the plane internal rotation of the axis perpendicular to output shaft Translation in the plane of straight output shaft axis, and then central gear and planetary gear side set in planetary assemblies are avoided, reduce transmission Noise.

Brief description of the drawings

, below will be to embodiment or prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model The required accompanying drawing used is briefly described in description, it should be apparent that, drawings in the following description are only that this practicality is new Some embodiments of type, for those of ordinary skill in the art, without having to pay creative labor, can be with Other accompanying drawings are obtained according to these accompanying drawings.

Fig. 1 is the sectional view of gear-box and motor confined state that the utility model embodiment provides；

Fig. 2 is the exploded view of the gear-box that the utility model embodiment provides and motor；

Fig. 3 is the structural representation for the planetary assemblies that the utility model embodiment provides；

Fig. 4 is the structural representation for the planet carrier that the utility model embodiment provides；

Fig. 5 is the structural representation at another visual angle of planet carrier that the utility model embodiment provides；

Fig. 6 is the structural representation for the output shelf that the utility model embodiment provides；

Fig. 7 is the structural representation for the end cap that the utility model embodiment provides；

Fig. 8 is the structural representation at another visual angle of end cap that the utility model embodiment provides；

Fig. 9 is the structural representation for the housing that the utility model embodiment provides.

Wherein, each reference in figure：

10-- motor 11-- output shaft 12-- round platforms

20-- planetary assemblies 21-- central gear 22-- planetary gears

23-- planet carrier 231-- boss 232-- retainer rings

2321-- the first recess 233-- connecting hole 24-- planetary gear shafts

25-- output shelf 251-- output sections 252-- connecting portions

26-- connecting pole 261-- limiting section 30-- housings

31-- flange 32-- the second recess 40-- end caps

41-- ring gear 42-- delivery outlet 421-- steps

43-- locating surface 40a-- end face portion 40b-- annular portions

50-- positions bearing 60-- annular gaskets.

Embodiment

Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in accompanying drawing 1 into accompanying drawing 9, Wherein same or similar label represents same or similar element or the element with same or like function from beginning to end.Under The embodiment that face is described by reference to accompanying drawing is exemplary, it is intended to for explaining the utility model, and it is not intended that to this The limitation of utility model.

In description of the present utility model, it is to be understood that term " length ", " width ", " on ", " under ", " preceding ", The orientation or position relationship of the instruction such as " rear ", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer " are based on attached Orientation or position relationship shown in figure, it is for only for ease of and describes the utility model and simplify to describe, rather than instruction or hint Signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this The limitation of utility model.

In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or Implicitly include one or more this feature.In description of the present utility model, " multiple " are meant that two or two More than, unless otherwise specifically defined.

In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be Mechanically connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be two The connection of element internal or the interaction relationship of two elements.For the ordinary skill in the art, can basis Concrete condition understands concrete meaning of the above-mentioned term in the utility model.

As shown in figure 1, the utility model embodiment provides a kind of gear-box, for anti-lock braking system and and motor 10 drive connections.Specifically, gear-box includes planetary assemblies 20, housing 30 and end cap 40, and housing 30 is sheathed on the table of motor 10 Face is simultaneously stretched out to the direction of output shaft 11 of motor 10, and planetary assemblies 20 are arranged in housing 30 and driven with the output shaft of motor 10 Dynamic connection, end cap 40 are fixedly connected with the part for stretching out in motor of housing 30, are provided with end cap 40 and are nibbled with planetary assemblies 20 The ring gear 41 of conjunction, the end face of end cap 40 also set up delivery outlet 42, and planetary assemblies 20 are provided with output section 251 and planetary assemblies 20 in end cap 40, and output section 251 is stretched into delivery outlet 42, and positioning bearing 50 is arranged with output section 251 and passes through positioning Bearing 50 is rotatably coupled with end cap 40.Gearbox applications are when anti-lock braking system, the output driving of output shaft 11 of motor 10 Power, output section 251 being delivered to after the deceleration of planetary assemblies 20, output section 251 (does not indicate) drive connection with connecting shaft in figure, Capacity eccentric bearing (not indicated in figure) is sheathed in connecting shaft, and connecting shaft drives capacity eccentric bearing to rotate, capacity eccentric bearing driving brake oil Pump (not indicated in figure) works.Gear-box is located between motor 10 and brake oil pump, and planetary assemblies 20 are connected to motor 10 and stopped Between car oil pump, output section 251 is rotatably fixed on end cap 40 by positioning bearing 50, i.e., planetary assemblies 20 are overall to turn It is fixed on dynamicly on end cap 40；End cap 40 is fixedly connected by housing 30 with motor 10, end cap 40 is fixedly connected with motor 10, Thus the relative position of end cap 40 and output shaft 11 is fixed, defeated when the entirety of planetary assemblies 20 is rotatably fixed on end cap 40 Relative position between shaft 11 and planetary assemblies 20 is also fixed；Therefore, when output shaft 11 drives planetary assemblies 20 to rotate When, planetary assemblies 20 can only effectively avoid planetary assemblies 20 and exist in the plane internal rotation of the axis perpendicular to output shaft 11 Translation in the plane of the axis of vertical output axle 11, and then avoid central gear 21 and the mistake of planetary gear 22 in planetary assemblies 20 Tooth, reduce drive noise.

Further, output shaft 11 is coaxially disposed with delivery outlet 42, i.e. the pivot of planetary assemblies 20 and output shaft 11 Axis coaxle, can so reduce the relative translational movement between the planetary assemblies 20 of output shaft 11.

Further, in the present embodiment, positioning bearing 50 can be rolling bearing or sliding bearing.

Further, as shown in Figure 2, Figure 3, Figure 4, planetary assemblies 20 include central gear 21, at least two planetary gears 22nd, planet carrier 23, planetary gear shaft 24 and output shelf 25, are provided with least two boss 231 on planet carrier 23, output shelf 25 with The end face of each boss 231 is abutted and is fixed on each boss 231, and output section 251 is arranged in output shelf 25, each planetary gear shaft 24 are arranged between boss 231, and the both ends of each planetary gear shaft 24 are connected with output shelf 25 and planet carrier 23 respectively, each planet tooth Wheel 22 is sheathed in planetary gear shaft 24 and engaged with ring gear 41, central gear 21 be engaged between each planetary gear 22 and with The drive connection of 10 output shaft of motor 11.Planetary assemblies 20 include planet carrier 23 and output shelf 25 simultaneously, and planet carrier 23 is used to fix Each planetary gear 22, planet carrier 23 are fixedly connected by multiple boss 231 with output shelf 25, and planet carrier 23 is connected with output shelf 25 Firmly, power transmission is stable, and planetary assemblies 20 are not easy torsional deformation, and the both ends of each planetary gear shaft 24 pass through planet carrier 23 respectively Fixed with output shelf 25, the whole stability of planetary assemblies 20 is good, avoids each planetary gear 22 because planet carrier 23 deforms and exports Planetary gear 22 is relative with the translation of central gear 21 caused by frame 25 deforms.Specifically, each planetary gear shaft 24 is arranged at convex Centre position between platform 231, in order to be uniformly arranged planetary gear 22.

Specifically, in the present embodiment, at least provided with two boss 231, two boss, 231, three boss such as can be set 231st, four boss 231 and the boss 231 of more than four,.The present embodiment is preferably provided with three boss 231, accordingly, if It is equipped with three planetary gears 22 and three planetary gear shafts 24.

Further, as shown in figure 4, planet carrier 23 also includes retainer ring 232, each boss 231 is arranged at retainer ring 232 On, the output end face of motor 10 is provided with round platform 12, and retainer ring 232 is sheathed on round platform 12.Retainer ring 232 is annular shape, Gu Determine ring 232 to be sheathed on round platform 12, and there is gap between the inner ring of retainer ring 232 and round platform 12, can so make full use of electricity For the output end of machine 10 to the space between the end face of round platform 12, space availability ratio is high, can reduce the axial dimension of gear-box.

Further, each boss 231 is uniformly distributed and in retainer ring 232, central gear 21 engages with each planetary gear 22 When power transmission it is uniform, power transmission is uniform when each planetary gear 22 engages with ring gear 41.

Further, as depicted in figs. 1 and 2, annular gasket 60 is additionally provided with housing 30, annular gasket 60 is arranged at The output end face of motor 10 and the inner ring sleeve of annular gasket 60 are on round platform 12.The effect of annular gasket 60 is to prevent from going Star component 20 directly touches motor 10, reduces the friction between planetary assemblies 20 and motor 10, prevents the shell of motor 10 from grinding Damage and prevent planetary assemblies 20 from wearing.

In the present embodiment, annular gasket 60 is preferably that anti-wear performance is good and the material of low-friction coefficient.

Further, as shown in Figures 2 and 3, planetary assemblies 20 also include the connecting pole 26 being correspondingly arranged with boss 231, One end of each connecting pole 26 is provided with limiting section 261, is additionally provided with corresponding with connecting pole 26 on planet carrier 23 and runs through boss 231 With the connecting hole 233 of retainer ring 232, positioned at connecting pole 26 one end limiting section 261 abut retainer ring 232, connecting pole 26 it is another One end is fixedly connected through connecting hole 233 and with output shelf 25.The output shelf 25 of connecting portion 252 and boss are made by connecting pole 26 231 are fixedly connected.

Further, connecting pole 26 can be specifically that end is provided with externally threaded bolt, and limiting section 261 is on bolt Nut.In the other embodiment of connecting pole 26, the other end and the output shelf 25 of connecting pole 26 rivet, planet carrier 23 and defeated Go out frame 25 to connect as one, avoid planetary assemblies 20 long-term use of or connect caused by shaking to loosen.

Further, as shown in figure 5, retainer ring 232 be provided with close to the end face of motor 10 it is corresponding with limiting section 261 First recess 2321, each limiting section 261 is corresponding to be placed in one first recess 2321.First recess 2321 is spacing for placing It portion 261, can so prevent limiting section 261 from protruding from the surface of retainer ring 232, reduce the axial dimension of planetary assemblies 20, prevent Limiting section 261 touches motor 10 or touches annular gasket 60.

Further, as shown in Fig. 1 and Fig. 9, housing 30 is provided with flange 31, end cap 40 with the position that end cap 40 is connected Excircle on set locating surface 43, end cap 40 is embedded at housing 30 and locating surface 43 abuts with flange 31.Housing 30 is sheathed on On the excircle of end cap 40, between the two with one section of longer connecting portion, end cap 40 can be firmly fixed, it is effective anti- Not-go-end lid 40 is rocked or loosened.

Further, end cap 40 is interference fitted with housing 30, by interference fit avoid completely housing 30 and end cap 40 it Between joint gap, further prevent end cap 40 from rocking or loosening.

Specifically, housing 30 is sheathed on outside motor 10, the end sleeve of housing 30 is on end cap 40 into cylindrical shape.

Further, as shown in figure 9, being provided with least one second recess 32 on housing 30, the second recess is from flange 31 Extend to the other end of housing 30.Specifically, the length of the second recess 32 is more than the connecting length of end cap 40 and housing 30.The Two recess 32 are the partial segmentation being connected with end cap 40 on housing 30, the extruding housing 30 when installing end cap 40, on housing 30 The part being connected with end cap 40 can produce elastic deformation, thus end cap 40 is more easily installed, and will not be because of interference fit And housing 30 and end cap 40 are caused to damage.

Specifically, the quantity of the second recess 32 can be one, two, three, four, five, six, seven, eight Or the quantity of more than eight.When setting more than two second recess 32, the second recess 32 is on housing 30 and end cap The partial segmentation of 40 connections is into some, and when installing end cap 40, each several part produces elastic shape because of the extruding of end cap 40 Become, end cap 40 is more easily installed, and will not be damaged caused by interference fit and to housing 30 and end cap 40.

Further, as shown in Figure 7, Figure 8, end cap 40 includes end face portion 40a and annular portion 40b, annular portion 40b and end face Portion 40a edge connection, ring gear 41 are arranged at annular portion 40b inner surface, and delivery outlet 42 is arranged on end face portion 40a.End Lid 40 only includes both of the aforesaid structure, simple in construction, energy rapid processing shaping, while can efficiently utilize the sky in end cap 40 Between, to greatest extent reduce gear-box size.

Specifically, annular portion 40b close end face portion 40a end set has the annular of circular annular portion 40b excircles Step (does not indicate) in figure, and a side end face of ring-shaped step is locating surface 43, when end cap 40 is connected with housing 30, annular portion 40b In embedded housing 30, ring-shaped step abuts flange 31, and specifically locating surface 43 abuts flange 31.Remove one where ring-shaped step Section, annular portion 40b other parts are embedded in housing 30, and end cap 40 has one section of longer connection between the two with housing 30 Position, can be firmly fixed end cap 40, effectively prevent end cap 40 from rocking or loosening.

Further, as shown in fig. 6, output shelf 25 also includes connecting portion 252, connecting portion 252 is in the form of annular discs, output section 251 are arranged on the end face of the remote motor 10 of connecting portion 252 and positioned at the center of the end face of connecting portion 252.Connecting portion 252 with The structure of retainer ring 232 is corresponding, is easy to assembly and connection, is to be unlikely to deform in power transmission.

In the present embodiment, planet carrier 23 has a retainer ring 232, and output shelf 25 has a connecting portion 252 in the form of annular discs, Retainer ring 232 and connecting portion 252 are round and flat structure so that the axial dimension of planetary assemblies 20 is very small, can be maximum The size of the reduction gear-box of limit.

Further, output section 251 is in the form of a column, and can be specifically cylindric, to increase the company of output section 251 and connecting shaft Spreading degree, improve bonding strength.

Further, output section 251 is provided with internal spline, and the one end of connecting shaft is provided with outer flower corresponding with internal spline Key, external splines are connected with internal spline.Originally it is in embodiment, D-shaped hole, corresponding connecting shaft can also be set in output section 251 One end be correspondingly arranged with D-shaped hole.

Further, the structure for installing positioning bearing 50 is provided with delivery outlet 42, specifically, installation positioning bearing 50 structure can be mounting groove (not indicated in figure), or the step 421 being disposed in delivery outlet 42, position bearing 50 It is fixed on step 421.The end face of positioning bearing 50 abuts with the end face of step 421, prevents from positioning bearing 50 axially inward It is mobile.

Further, the present embodiment, can be also driven by extending vertically using two level or multistage planet.

In the present embodiment, by setting output section 251 in output shelf 25, positioning bearing 50 is arranged with output section 251 And be rotatably coupled by positioning bearing 50 with end cap 40, end cap 40 is fixedly connected with housing 30, realize planetary assemblies 20 with The height of motor 10 is concentric, and limitation planetary assemblies 20 can only be in the plane internal rotation perpendicular to axis, and is unable to translation, avoids The bias of planetary assemblies 20 and side set phenomenon, so as to realize high reliability, steady transmission and low noise transmission.

Preferred embodiment of the present utility model is these are only, it is all in this practicality not to limit the utility model All any modification, equivalent and improvement made within new spirit and principle etc., should be included in guarantor of the present utility model Within the scope of shield.

Claims (10)

1. a kind of gear-box, for anti-lock braking system, including housing and be arranged in the housing and with the output of motor The planetary assemblies of axle drive connection, it is characterised in that：The gear-box is additionally provided with end cap, and the housing is sheathed on the motor Surface and the direction of output shaft to the motor stretch out, the part for stretching out in the motor of the end cap and the housing It is fixedly connected, the ring gear engaged with the planetary assemblies is provided with the end cap, the end face of the end cap also sets up output Hole, the planetary assemblies are in the end cap and are provided with output section, and the output section is stretched into the delivery outlet, described defeated Go out in portion to be arranged with positioning bearing and by it is described positioning bearing be rotatably coupled with the end cap, the connecting shaft with it is described Output section drive connection.

2. gear-box according to claim 1, it is characterised in that：The planetary assemblies include central gear, at least two Planetary gear, planet carrier, planetary gear shaft and output shelf, at least two boss, the output shelf are provided with the planet carrier Abut and be fixed on each boss with the end face of each boss, the output section is each described in the output shelf Planetary gear shaft is arranged between the boss, the both ends of each planetary gear shaft respectively with the output shelf and the planet Frame is connected, and each planetary gear is sheathed in the planetary gear shaft and engaged with the ring gear, and the central gear is nibbled Together between each planetary gear and with the output shaft drive connection of motor.

3. gear-box according to claim 2, it is characterised in that：The planet carrier also includes retainer ring, each boss It is arranged in the retainer ring, the output end face of the motor is provided with round platform, and the Fixing shrink ring is on the round platform.

4. gear-box according to claim 3, it is characterised in that：Annular gasket, the ring are additionally provided with the housing Shape pad is arranged at the output end face of the motor and the inner ring sleeve of the annular gasket is located on the round platform.

5. gear-box according to claim 3, it is characterised in that：The planetary assemblies also include set corresponding with the boss The connecting pole put, one end of each connecting pole are provided with limiting section, are additionally provided with the planet carrier and the connecting pole pair Should and through the connecting hole of the boss and the retainer ring, the limiting section abuts the retainer ring, the connecting pole it is another One end is fixedly connected through the connecting hole and with the output shelf.

6. gear-box according to claim 5, it is characterised in that：The retainer ring is provided with close to the end face of the motor The first recess corresponding with the limiting section, each limiting section are correspondingly placed in first recess.

7. according to the gear-box described in any one of claim 1 to 6, it is characterised in that：The housing is connected with the end cap Position is provided with flange, and locating surface is set on the excircle of the end cap, and the end cap is embedded in the housing and described fixed Plane abuts with the flange.

8. according to the gear-box described in any one of claim 1 to 6, it is characterised in that：The end cap includes end face portion and annulus Portion, the annular portion are connected with the edge of the end face portion, and the ring gear is arranged at the inner surface of the annular portion, described defeated Portal and be arranged in the end face portion.

9. according to the gear-box described in any one of claim 2 to 6, it is characterised in that：The output shelf also includes in the form of annular discs Connecting portion, the output section is arranged on end face of the connecting portion away from the motor and positioned at the end face of the connecting portion Center.

10. according to the gear-box described in any one of claim 1 to 6, it is characterised in that：The output section connects with connecting shaft driving Connect, the output section is provided with internal spline, and the one end of the connecting shaft is provided with external splines corresponding with the internal spline, institute External splines is stated to be connected with the internal spline.