CN102762883B

CN102762883B - Electric brake device for vehicle

Info

Publication number: CN102762883B
Application number: CN201180007087.XA
Authority: CN
Inventors: 黑木和丰; 藤井宣辉; 小池明彦
Original assignee: Honda Motor Co Ltd; Nissin Kogyo Co Ltd
Current assignee: Honda Motor Co Ltd; Nissin Kogyo Co Ltd
Priority date: 2010-03-03
Filing date: 2011-02-25
Publication date: 2015-06-24
Anticipated expiration: 2031-02-25
Also published as: CN102762883A; JP2011179652A; JP5292338B2; WO2011108450A9; WO2011108450A1

Abstract

Disclosed is an electric brake device for a vehicle, wherein a motion conversion mechanism and a reducer comprised of first and second planetary gear mechanisms are provided between a disk brake and an electric motor. A speed reduction chamber (59) for containing a reducer (23A) is defined between a motor case (83) to which a caliper body (26) is attached and the caliper body (26). A ring gear (64) common to first and second planetary gear mechanisms (61, 62A) is inserted into the speed reduction chamber (59), and is prevented from moving in the axial direction by the motor case (83) and the caliper body (26). The end portion of the ring gear (64), which is opposite to an electric motor (22A), is engaged in the caliper body (26).; Thus, the number of components for affixing the ring gear common to the first and second planetary gear mechanisms can be reduced to a great extent, and the ring gear can be easily assembled.

Description

Electric brake device for vehicle

Technical field

The present invention relates to a kind of electric brake device for vehicle, it possesses: make the disk type braker that friction pad is opposed with the side of disc rotor; Motor; There is running shaft and make according to the rotation of this running shaft the movement conversion mechanism that described friction pad is retreated relative to described disc rotor; Be made up of first and second planetary gears and be arranged on the retarder between described motor and described running shaft.

Background technique

By patent documentation 1, there will be a known a kind of motor and and the thread mechanism that links of brake piston between be folded with the vehicle disk brake actuator of two-stage planet formula retarder, in this vehicle disk brake actuator, the retarder being housed in the two-stage planet formula in gear-box is made up of first planet gear mechanism and the second planetary gears, this first planet gear mechanism possesses the first sun gear be arranged on motor reel, support as rotatable internal gear by housing, be rotatable by the first planet gear support engaged with this internal gear and the first sun gear and be fixed on the first planet wheel carrier of described gear-box, second planetary gears possesses the secondary sun wheel be arranged on described input shaft, the described internal gear shared with first planet gear mechanism, the second planetary pinion engaged with this internal gear and secondary sun wheel is supported for the second rotatable planetary wheel carrier, second planetary wheel carrier links in mode that is coaxial and that can not relatively rotate with the thread spindle of described thread mechanism.

[at first technical paper]

[patent documentation]

[patent documentation 1] Japanese Unexamined Patent Publication 2006-183723 publication

But, in the retarder of the two-stage planet formula disclosed in above-mentioned patent documentation 1, the internal gear shared in first and second planetary gears supports as rotatable by gear-box, and between internal gear with gear-box, clamp a pair ball bearing in larger footpath, thus not only components number increases, and the maximization of gear-box can be caused.

In order to solve this problem, considering the internal gear shared in first and second planetary gears to be fixed on gear-box, in this case, expecting to do one's utmost to reduce the components number for fixed annulus, and making the assembling of internal gear easy.

Summary of the invention

The present invention proposes in view of the above circumstances, and its object is to provides a kind of components number of doing one's utmost minimizing and fixing for the internal gear jointly possessed by first and second planetary gears, and the assembling of internal gear is easy to electric brake device for vehicle.

To achieve these goals, the present invention relates to a kind of electric brake device for vehicle, it possesses: disk type braker, and it makes friction pad opposed with the side of disc rotor; Motor; Movement conversion mechanism, it has running shaft and according to the rotation of this running shaft, described friction pad is retreated relative to described disc rotor; retarder, it is made up of first and second planetary gears, and be arranged between described motor and described running shaft, the fisrt feature of described electric brake device for vehicle is, first planet gear mechanism possesses the first sun gear arranged on the motor reel of described motor, internal gear, be rotatable first planet wheel carrier by the first planet gear support engaged with this internal gear and the first sun gear, second planetary gears possesses the secondary sun wheel rotated together with first planet wheel carrier, the described internal gear shared with first planet gear mechanism, the second planetary pinion engaged with this internal gear and secondary sun wheel is supported for rotatable and with described rotating shaft coaxle and second planetary wheel carrier that can not link with the relative rotation, the electric case of described motor is installed on this caliper body in the mode forming the reduction chamber of accommodating described retarder between itself and the caliper body of described disk type braker, described internal gear is to stop the mode moved axially to be inserted in described reduction chamber by described electric case and described caliper body, described internal gear carry out concavo-convexly engaging with the mode limiting the rotation around axis of this internal gear and described caliper body with the end of described opposite-motor-side.

In addition, the present invention is on the basis of the structure of fisrt feature, its second feature is, slit is engaged with the multiple position of the circumference of the end of described opposite-motor-side is provided with at described internal gear, be arranged at described caliper body to these engagement pins of inserting respectively of engaging slits, the width circumferentially of described internal gear and the external diameter of described engagement pin are set to and allow described internal gear at confined scope intrinsic displacement in the plane of the axis vertical take-off with described retarder.

In addition, the present invention first or second feature structure basis on, its third feature is, the accommodating recess of being closed by described electric case is arranged at described caliper body in the mode of the part forming described reduction chamber, clamps the sealing component of the ring-type in footpath larger than the inner circumferential of described accommodating recess between described electric case and described caliper body.

It should be noted that, the thread mechanism 24 of mode of execution corresponds to movement conversion mechanism of the present invention, and the thread spindle 45 of mode of execution corresponds to running shaft of the present invention.

[invention effect]

In accordance with a first feature of the invention, substantially caliper body is fixed on by the internal gear shared by first and second planetary gears, and without the need to clamping bearing components between internal gear and caliper body, the minimizing of components number and the miniaturization of caliper body correspondingly can be realized.

And, according to second feature of the present invention, owing to inserting with the engaging slit that the multiple position of the circumference of the end of opposite-motor-side is arranged the engagement pin be arranged on caliper body at internal gear, therefore, it is possible to reduce for internal gear being substantially fixed on the components number on caliper body, and just engagement pin can be inserted in engaging slit by means of only internal gear being inserted in reduction chamber, therefore the assembling of internal gear becomes easy.Further, the gap value that internal gear produces between mobile engaging slit and engagement pin in plane orthogonal to the axis can be made, thus the axle offset of first and second planetary gears can be absorbed, and then the transmission of rotating power smoothly in retarder can be realized.

In addition, according to third feature of the present invention, the sealing component being installed in the ring-type between electric case and caliper body is arranged on the large footpath of the inner circumferential of the accommodating recess on caliper body than the part forming reduction chamber, therefore, it is possible to utilize minimal sealing component to carry out the immersion in reduction chamber and in electric case such as anti-sealing.

Accompanying drawing explanation

Fig. 1 is the longitudinal sectional view of the electric brake device for vehicle of embodiment 1.(the first embodiment)

Fig. 2 is the 2-2 line sectional view of Fig. 1.(the first embodiment)

Fig. 3 is the 3-3 line sectional view of Fig. 1.(the first embodiment)

Fig. 4 is the 4 arrow instruction unit enlarged views of Fig. 1.(the first embodiment)

Fig. 5 is the exploded perspective view of retarder.(the first embodiment)

Fig. 6 is the 6 arrow instruction unit enlarged views of Fig. 2.(the first embodiment)

Fig. 7 represents the sectional view of 12 jiaos of sleeves to the fastening state of output link.(the first embodiment)

Fig. 8 is the plan view observed brush carriage from motor room side and obtain.(the first embodiment)

Fig. 9 is the rear view observed brush carriage from retarder side and obtain.(the first embodiment)

Figure 10 is to represent the plan view that the major component of Fig. 8 is amplified by capacitor holding part.(the first embodiment)

Figure 11 is the stereogram of capacitor holding part.(the first embodiment)

Figure 12 is the major component enlarged view of Fig. 4.(the first embodiment)

Figure 13 is the sectional view corresponding to Figure 12 near Coupler (coupler) portion.(the first embodiment)

Figure 14 is the longitudinal sectional view of the electric brake device for vehicle of embodiment 2.(the second embodiment)

Figure 15 is the major component side view of electric brake device for vehicle.(the second embodiment)

Figure 16 is the 16 arrow instruction unit enlarged views of Figure 14.(the second embodiment)

Figure 17 is the exploded perspective view of retarder.(the second embodiment)

Figure 18 is the 18-18 line sectional view of Figure 15.(the second embodiment)

[symbol description]

21A, 21B ... disk type braker

22A, 22B ... motor

23A, 23B ... retarder

24 ... as the thread mechanism of movement conversion mechanism

25A, 25B ... disc rotor

26 ... caliper body

27,28 ... friction pad

35 ... accommodating recess

45 ... as the thread spindle of running shaft

59,133 ... reduction chamber

61 ... first planet gear mechanism

62A, 62B ... second planetary gears

63 ... first sun gear

64 ... internal gear

65 ... first planet gear

66 ... first planet wheel carrier

67 ... secondary sun wheel

68 ... second planetary pinion

69A, 69B ... second planetary wheel carrier

71 ... engaging slit

72 ... engagement pin

83,137 ... electric case

92 ... sealing component

95 ... motor reel

Embodiment

Below, with reference to accompanying drawing, embodiments of the present invention are described.

[embodiment 1]

With reference to Fig. 1 ~ Figure 13, be described embodiments of the invention 1, first, in FIG, this electric brake device for vehicle possesses: disk type braker 21A; At the positive and negative rotation motor 22A freely that the caliper body 26 of this disk type braker 21A is installed; The retarder 23A linked with this motor 22A; The rotary motion exported from retarder 23A is converted to axially retreat motion and the thread mechanism 24 as movement conversion mechanism that is arranged between the brake piston 38 of described disk type braker 21A and described retarder 23A.

Disk type braker 21A can obtain service brake state based on hydraulic pressure, and carries out work by motor 22A and can obtain the break of parking braking state, and it possesses: the disc rotor 25A rotated together with the wheel of not shown wheel; Caliper body 26; Arranged opposite with the bi-side of disc rotor 25A, and be configured in a pair friction pad 27,28 between disc rotor 25A and caliper body 26.

In the lump with reference to Fig. 2, described caliper body 26 possesses: support the housing section 26a for sliding on the direction of the axis along described disc rotor 25A by the bracket 29 being arranged on body side; The arm 26b that disc rotor 25A extends to opposition side is striden across from housing section 26a.

The friction pad opposed with the face, side of disc rotor 25A in the housing section 26a side of described caliper body 26 27 by by with disc rotor 25A sliding contact and the friction facing 30 that can play frictional force is arranged at clad lining 32 and form, the friction pad opposed with the another side of disc rotor 25A in the arm 26b side of described caliper body 26 28 by by with disc rotor 25A sliding contact and the friction facing 31 that can play frictional force is arranged at clad lining 33 and form, two friction pads 27, 28 can be held in described bracket 29 movably on the direction of the axis along disc rotor 25A.

Be provided with at the housing section 26a of caliper body 26: have with the axis of the axis being parallel of described disc rotor 25A and the work cylinder holes 34 of opening wide to described friction pad 27 side; To the accommodating recess 35 that the opposition side of described friction pad 27 opens wide; Be clipped in the next door 36 between work cylinder holes 34 and accommodating recess 35.Work cylinder holes 34 and accommodating recess 35 are formed in the mode on the same axis with circular cross-section, are provided with the through hole 37 work cylinder holes 34 and accommodating recess 35 linked coaxially at the central part in described next door 36.

Contain in work cylinder holes 34 and can carry out brake piston 38 in axial sliding, this brake piston 38 is formed as the bottomed cylindrical of front end obturation, and hydraulic chamber 39 is formed between itself and described next door 36, the front end of this brake piston 38 abuts with the clad lining 32 of described friction pad 27, and in order to stop the rotation in work cylinder holes 34 to engage with described clad lining 32.

In addition, the piston seal 40 of the ring-type be installed between caliper body 26 and brake piston 38 is installed at the internal surface of work cylinder holes 34, between the open end and brake piston 38 of work cylinder holes 34, be provided with the dust-proof cover 41 of ring-type, be provided with the hydraulic pressure road 42 guiding hydraulic pressure to described hydraulic chamber 39 at housing section 26a.

Thread mechanism 24 possesses with the coaxial thread spindle 45 of work cylinder holes 34, can not engage with brake piston 38 with the relative rotation and the nut 46 screwed togather with described thread spindle 45, and this thread mechanism 24 is housed in the housing section 26a of caliper body 26 in the mode of the behind being configured in brake piston 38.

Described brake piston 38 opposition side and in the rear end of thread spindle 45, coaxially and be provided with the connection shaft portion 45a of the through hole 37 in the through next door 36 of rotatable mode integratedly, and be provided with integratedly to radial direction lip part 45b protruding outside in the mode opposed with described next door 36 in work cylinder holes 34, between described next door 36 and connection shaft portion 45a, clamped O-ring seals 47.

In the lump with reference to Fig. 3, described thread spindle 45 screws togather with the nut 46 around this thread spindle 45 in described brake piston 38.This nut 46 have integratedly coaxially around the cylindrical part 46a (with reference to Fig. 1) of described thread spindle 45, from the front end of this cylindrical part 46a to radial direction engagement portion 46b protruding outside, from the front center portion of this engagement portion 46b forwards outstanding and abutting teat 46c that is that abut with the front inner surface of described brake piston 38, the tapped hole 48 that the described thread spindle 45 of confession screws togather is arranged in the whole length of the axis of nut 46.

The periphery of described engagement portion 46b has and is circumferentially separating the teat 49,49 that such as 8 positions, equally spaced multiple position configure ... and being formed as petal-shaped, the shape of cross section as the anterior inner circumferential of the brake piston 38 of bottomed cylindrical has and every two described teats 49,49 ... four corresponding planar surface portion 50 ..., by above-mentioned planar surface portion 50 ... between link four curved parts 51 ... and be formed as non-circular shape.Thus, described nut 46 is inserted through and engages with clad lining 32 and prevent at the brake piston 38 of the rotation in cylinder holes 34 that works, thus the engagement portion 46b of nut 46 snaps into can not relatively rotate with the front portion of brake piston 38.

Described each teat 49 of the periphery of the engagement portion 46b in described nut 46 ... each other and between the anterior inner circumferential of brake piston 38, be formed with the path 52 of the circulation allowing brake fluid respectively ..., the front-end face of the abutting teat 46c of the front end of described nut 46 is provided with and extends outside radial direction from described tapped hole 48 and be configured to criss-cross 4 path grooves 53 ...

In the lump with reference to Fig. 4, sliding bearing 54 and pad 55 has been clamped between the lip part 45b and the next door 36 of described caliper body 26 of described thread spindle 45, this pad 55 plays function as stoping the pressing member of the disengaging of the O-ring seals 47 be installed between described next door 36 and connection shaft portion 45a and is clipped between described sliding bearing 54 and next door 36, and sliding bearing 54 and pad 55 are formed as dull and stereotyped ring-type.

The face opposed with described next door 36 of described lip part 45b is formed with the chimeric recess 56 utilizing the base portion periphery of described connection shaft portion 45a to carry out the ring-type of regulation inner circumferential, and described sliding bearing 54 is fitted together to chimeric recess 56.And the inner circumferential of described chimeric recess 56 is connected with the base portion periphery of described connection shaft portion 45a via flexure plane 57, and the internal diameter of described sliding bearing 54 is set to the base portion external diameter being greater than described connection shaft portion 45a, in order to avoid come in contact with described flexure plane 57.

In this thread mechanism 24, when the power from motor 22A is slowed down by retarder 23A, and thread spindle 45 is when being passed the power rotated to one direction, under the state that the rotation of brake piston 38 and nut 46 is prevented from, to be slided to axial front the effect and reaction that produce by brake piston 38, and disc rotor 25A is clamped from both sides by friction pad 27,28, obtain braking force thus.And by making described thread spindle 45 rotate to its other direction, and brake piston 38 is slided to axial rearward direction, thus brake off state.

Pay close attention to Fig. 4, the electric case 83 of described motor 22A is arranged in the mode of the opening end of closing described accommodating recess 35 on the housing section 26a of described caliper body 26, reduction chamber 59 is formed in the gear-box 60A be made up of described electric case 83 and described caliper body 26, this reduction chamber 59 at least forms a part by accommodating recess 35, in this reduction chamber 59, contain described retarder 23A.

Described retarder 23A is provided with first planet gear mechanism 61 and the second planetary gears 62A between the motor reel 95 of motor 22A and the connection shaft portion 45a of the thread spindle 45 of described thread mechanism 24.

Again in the lump with reference to Fig. 5, first planet gear mechanism 61 possesses the first sun gear 63 be arranged on described motor reel 95, be fixed on the internal gear 64 on described gear-box 60A, by multiple such as three the first planet gears 65 engaged with this internal gear 64 and the first sun gear 63 ... supporting is rotatable first planet wheel carrier 66, second planetary gears 62A possesses the secondary sun wheel 67 that periphery is engaged with the inner circumferential of first planet wheel carrier 66, the described internal gear 64 shared with first planet gear mechanism 61, by multiple such as three the second planetary pinions 68 engaged with this internal gear 64 and secondary sun wheel 67 ... supporting is the second rotatable planetary wheel carrier 69A, the output link 70 of the chimeric dull and stereotyped ring-type of sawtooth is carried out with the inner circumferential of the second planetary wheel carrier 69A in periphery.

The described internal gear 64 shared in first and second planetary gears 61,62A is formed as having the cylindrical shape of the external diameter slightly less than the internal diameter of described accommodating recess 35 and is inserted in described reduction chamber 59, this internal gear 64 carry out concavo-convexly engaging with the end of described motor 22A opposition side and the described next door 36 of the inner end wall of the described accommodating recess of formation 35 in described caliper body 26, limit the rotation around axis of this internal gear 64.In order to this concavo-convex engaging, in the present embodiment, such as three positions, the multiple position of circumference of the end of the described internal gear 64 with described motor 22A opposition side are respectively equipped with the engaging slit 71 opened wide to side, described next door 36 ..., be arranged at described next door 36 and with multiple such as three engagement pins 72 of extending of the axis being parallel of internal gear 64 ground ... be inserted into described engaging slit 71 respectively ... in.And, described each engagement pin 72 ... by an end being embedded into the pin bearing hole 73 with the end arranged on described next door 36 ... in and be arranged on described next door 36, each engagement pin 72 outstanding from next door 36 ... the other end be inserted into described engaging slit 71 ... in.

And, as can be seen from Figure 6, width d along the described engaging slit 71 of the circumference of internal gear 64 sets slightly larger than the outer diameter D of described engagement pin 72, to make to form gap 74 between internal gear 64 and engagement pin 72, thus, in confined scope till described internal gear 64 abuts with the inner peripheral surface of accommodating recess 35, allow the displacement with the described internal gear 64 in the plane of the axis vertical take-off of retarder 23A.

First planet wheel carrier 66 is formed as dull and stereotyped ring-type, the half portion periphery of the described motor 22A side of the secondary sun wheel 67 that shape of cross section is identical in axial whole length is engaged with the inner circumferential of first planet wheel carrier 66, and secondary sun wheel 67 rotates together with first planet wheel carrier 66.

In this first planet wheel carrier 66, there is the first rest pin 75 of the axis parallel with first planet wheel carrier 66 ... an end be such as fixed on centered by the axis of this first planet wheel carrier 66 imaginary circle by being pressed on circumferentially separate on such as three positions, equally spaced multiple position, each first rest pin 75 ... the other end through being separately positioned on first planet gear 65 ... on the first bearing hole 76 ...

And, form plectane portion 88b and the first planet gear 65 of the lid component 88 in the described electric case 83 of a part of described gear-box 60A ... opposed, and make opposition side from a part of the plectane portion 88b of described lid component 88 to retarder 23A hollowly bending forming annular recessed portion 91 with described each first rest pin 75 ... the opposed mode in the other end be formed at the plectane portion 88b of described lid component 88.

Second planetary pinion 68 ... with engaging with the half portion periphery of described motor 22A opposition side of described secondary sun wheel 67, second rest pin 77 ... an end waited by press-in and be fixed on the second planetary wheel carrier 69A of the ring-type being formed as dull and stereotyped circumferentially separate on such as three positions, equally spaced multiple position, the second rest pin 77 ... the other end be inserted at the second planetary pinion 68 respectively ... central part arrange the second bearing hole 78 ... in.

In described thread mechanism 24 with thread spindle 45 coaxially and the end of the retarder 23A side of the connection shaft portion 45a be connected integratedly protrude into described reduction chamber 59, the end of this connection shaft portion 45a is directly pressed in the press-in hole 79 that arranges at the central part of described output link 70.And the second planetary wheel carrier 69A of the second planetary gears 62A connects to via output link 70 can not relatively rotate with described thread spindle 45, it is chimeric that periphery and the inner circumferential of the second planetary wheel carrier 69A of this output link 70 carry out sawtooth.

But, state reduction chamber 59 opened described motor 22A is taken off from described caliper body 26, form the state that the part of reduction chamber 59 and the accommodating recess 35 be arranged on caliper body 26 become opening, in this condition, described output link 70 can be retained in accommodating recess 35 and retarder 23A is decomposed, wherein be pressed into the connection shaft portion 45a be connected with thread spindle 45 one of thread mechanism 24 in this output link 70, as shown in Figure 7, the described output link 70 stayed is formed as 12 jiaos of sleeves 80 as rotary manipulation instrument to be engaged.Namely, the periphery of output link 70 with can dismounting and the mode that can not relatively rotate and the inner circumferential of the second planetary wheel carrier 69A to carry out sawtooth chimeric, therefore, the multiple teeth portion 81,81 on the periphery of output link 70 are formed in ... be formed as engaging with the inner circumferential of the mode that can not relatively rotate with described 12 jiaos of sleeves 80.

The electric case 83 of motor 22A forms motor room 84 therein and is arranged on the housing section 26a of caliper body 26, comprising: have the metal yoke portion 86 being formed as bottomed cylindrical to radial direction lip part 86a protruding outside integratedly at open end; The resin-made such as plastic brush carriage 87 that peripheral part abuts with described lip part 86a and closed by the opening end in described yoke portion 86; This brush carriage 87 is clipped in the metal lid component 88 between itself and described yoke portion 86.

Such as three positions, multiple positions circumferentially spaced apart of the peripheral part of described brush carriage 87 are embedded with and are formed as the cylindric collar 89 by metal ..., through the described collar 89 of described lip part 86a and described brush carriage 87 ... bolt 90 ... screw togather with the housing section 26a of caliper body 26.That is, the electric case 83 of motor 22A is by bolt 90 ... and the housing section 26a of described caliper body 26 is fastened in removable mode.

Described lid component 88 is formed by the bending forming of sheet metal, there is cylindric cartridge housing body 88a, the plectane portion 88b extended from the outside side of this cartridge housing body 88a integratedly, be at right angles to connected with the periphery of this plectane portion 88b and the cylindrical part 88c that extends to described retarder 23A side, make a part of cylindrical part 88c outstanding and chimeric with described brush carriage 87 from brush carriage 87 to retarder 23A side, the part outstanding from described brush carriage 87 in cylindrical part 88c is chimeric with the housing section 26a of described caliper body 26.

And, under the state being installed on the housing section 26a of caliper body 26 at electric case 83, the opening end of the accommodating recess 35 in caliper body 26 is closed by the described lid component 88 of the part forming described electric case 83, moving axially of internal gear 64 in retarder 23A is limited by the plectane portion 88b of the next door 36 of caliper body 26 and described lid component 88, moved by the circumference of carrying out the incompatible restriction internal gear 64 of embossed card with the next door 36 of caliper body 26, therefore next door 36 and plectane portion 88b restrictive axial is utilized to move, thus internal gear 64 is substantially fixed on gear-box 60A.

In addition, in the outside of the cylindrical part 88c of described lid component 88, between the housing section 26a and brush carriage 87 of caliper body 26, clamp the sealing component 92 of the ring-type in footpath larger than the inner circumferential of described accommodating recess 35, between the lip part 86a and brush carriage 87 in yoke portion 86, clamp the sealing component 93 of the configuration position ring-type be in the inner part positioned at than bolt 90.

The motor reel 95 of described motor 22A supports as rotatable by described electric case 83, one end of this motor reel 95 is supported as rotatable via ball bearing 96 by the bearing housing 86b be arranged on the dead end central part in described yoke portion 86, and, the other end of motor reel 95 protrudes into reduction chamber 59 with the through brush carriage 87 of rotatable mode and lid component 88, carves and be provided with the first sun gear 63 in reduction chamber 59 and in the periphery, the other end of motor reel 95.And, clamp between the cartridge housing body 88a and motor reel 95 of lid component 88 and be with Packed ball bearing 97, to prevent lubricating grease from reduction chamber 59 to the inflow of motor room 84.

Arrange in described motor room 84 and on described motor reel 95 there is the armature 99 of commutator 98, be fixed with multiple magnet 100,100 in the part corresponding with armature 99 in the inner circumferential in described yoke portion 86 ...

In the lump with reference to Fig. 8 and Fig. 9, the central hole 101 inserted for a part for described commutator 98 is with the central part making the through mode of described motor reel 95 be arranged on brush carriage 87, on two positions spaced at intervals on the face of described motor room 84 side and around described central hole 101 of brush carriage 87, with along the radial direction of described commutator 98 longer the mode that extends be provided with chimeric holding cylinder 103 integratedly, 103, this chimeric holding cylinder 103, 103 carry out the brush 102 of sliding contact by with described commutator 98, 102 are fitted together to into and can slide along the radial direction of described commutator 98, each brush 102 ... by in itself and described chimeric holding cylinder 103 ... between compress setting spring (not shown) exert a force to the side of carrying out sliding contact with commutator 98.

Capacitor holding part 105 is provided with being spaced from each other on such as three positions, equally spaced multiple position on the face of described motor room 84 side and around described central hole 101 of described brush carriage 87 ..., from above-mentioned capacitor holding part 105 ... in the capacitor holding part 105 selected ... upper, in the present embodiment close to described brush holding part 103 ... two capacitor holding parts 105 ... on maintain capacitor 104 for reducing radio noise ...

In the lump with reference to Figure 10 and Figure 11, described capacitor holding part 105 has: supporting surface 106, and its plane along the axis vertical take-off with described motor 22A is formed, and is formed at described brush carriage 87 in the mode making the one side of described capacitor 104 abut; A pair hook portion 107,108, they are integrally formed in described brush carriage 87, and between they and described supporting surface 106, clip described capacitor 104, and described capacitor holding part 105 limits the movement in the plane of the axis vertical take-off with described motor 22A of described capacitor 104.

Described supporting surface 106 is formed as the bottom surface of the recess 109 of the rectangular shape arranged on the face of described motor room 84 side at described brush carriage 87, and the roughly half of the described one side side in described capacitor 104 is inserted partially into described recess 109.By the roughly half part of described capacitor 104 to the insertion of this recess 109, limit the movement in the plane of the axis vertical take-off with motor 22A of described capacitor 104.

Described two hook portions 107,108 is in order to stop described capacitor 104 from the disengaging of described recess 109, erecting from the opening end lateral margin of described recess 109 and be integrally formed in described brush carriage 87, being formed at described brush carriage 87 for making the nib 110,111 that rises of the mould separating of the described hook portion of formation 107,108 to the bottom surface of described recess 109 and described supporting surface 106 opening.And, the hook portion 107 of one side is configured to direction of insertion 119 from capacitor 104 to described recess 109 that insert along and opening end lateral margin in the intermediate portion side of described recess 109 from this recess 109 erects, and the hook portion 108 of the opposing party is configured to erect from the opening end lateral margin of this recess 109 at the front end opposite side of the described recess 109 along described direction of insertion 119.

In addition, the pair of terminal 104a, the 104b that extend from described capacitor 104 are configured in a pair groove 112,113, the mode that one end is connected with described recess 109 is formed at described brush carriage 87 with the opposition side of the side in the described hook portion 108 of configuration by this pair groove 112,113, be arranged at being separated by described groove 112,113 the guide surface 114a wall 114 of described brush carriage 87 being formed with inclination, this guide surface 114a guides this capacitor 104 when described capacitor 104 inserts to described recess 109.

The other end of described two grooves 112,113 is connected with window 115,116, this window 115,116 across described brush carriage 87 two sides between and be arranged at this brush carriage 87, towards the mode of described window 115,116, bus 117,118 is embedded in brush carriage 87 with a part, terminal 104a, 104b of described capacitor 104 are electrically connected with described bus 117,118 by soldering etc. in the part towards described window 115,116.

But, as shown in Figure 4, between the reduction chamber 59 of the motor room 84 formed in the electric case 83 of motor 22A and collecting retarder 23A, be configured with insulated space 121.And, brush carriage 87 with the face of motor room 84 opposition side on be provided with insulated space recess 122, this brush carriage 87 forms a part for described electric case 83 and around the opening end of accommodating recess 35, is anchored on caliper body 26 and is clipped between motor room 84 and reduction chamber 59, form described insulated space 121 by this insulated space recess 122 and lid component 88, brush carriage 87 is clipped between itself and yoke portion 86 by this lid component 88.

In the lump with reference to Figure 12 and Figure 13, be formed the access 123 of the labyrinth-like linked between reduction chamber 59 and motor room 84 at the peripheral part of electric case 83.

This access 123 comprises: the multiple position of circumference in the plectane portion 88b in the lid component 88 of a part forming described electric case 83 and the portion that is connected with of cylindrical part 88c is arranged, and multiple first intercommunicating pores 124 be communicated with described reduction chamber 59 To be formed between the described plectane portion 88b of described lid component 88 and brush carriage 87 and with the first intercommunicating pore 124 ... the annulus 125 be communicated with; One end is communicated with this annulus 125 and is arranged on the second intercommunicating pore 126 on brush carriage 87 By the second intercommunicating pore 126 ... and the annular spaces 127 linking between described motor room 84 and be formed between described brush carriage 87 and the open end in yoke portion 86.

Described brush carriage 87 is provided with cylindrical part 87a integratedly, this cylindrical part 87a is configured in the chimeric holding cylinder 103 of the radial direction along yoke portion 86 ... outside and with the open end inner circumferential in yoke portion 86 close to opposed, the described annular spaces 127 of the part forming described access 123 is formed, multiple such as two the second intercommunicating pores 126 between the open end inner circumferential and the periphery of cylindrical part 87a in yoke portion 86 ... described brush carriage 87 is arranged in mode annular spaces 127 and described annulus 125 linearly linked.

In addition, outstanding and be arranged at described brush carriage 87 integratedly to the outside side of 87b, Coupler portion that motor 22A powers, be arranged at brush carriage 87 by described motor room 84 with the ft connection road 128 of ft connection via in this Coupler portion 87b.

This ft connection road 128 comprises: in the part corresponding with described Coupler portion 87b and in the inner side of described cylindrical part 87a, one end is arranged at the third connecting hole 129 of brush carriage 87 to motor room 84 opening; Link in the other end in third connecting hole 129 and Coupler portion 87b and the 4th intercommunicating pore 130 of linearly extension.

Next, the effect of this embodiment 1 is described, the work cylinder holes 34 be fitted together to sliding freely for brake piston 38 and with the coaxial accommodating recess 35 of this work cylinder holes 34 to accompany next door 36 each other and the mode of opening wide to opposition side is each other arranged on the caliper body 26 of disk type braker 21A, the output link 70 that thread spindle 45 and a part are housed in the retarder 23A in accommodating recess 35 can not relatively rotate and be connected coaxially, and thread spindle 45 is with the through next door 36 of rotatable mode, the thread mechanism 24 with this thread spindle 45 is arranged between retarder 23A and brake piston 38, the rotation of this thread spindle 45 is converted to the axial moving back and forth of brake piston 38, the motor 22A inputting rotating power to retarder 23A is installed on caliper body 26, lip part 45b is arranged at thread spindle 45 and opposed with next door 36 integratedly in work cylinder holes 34, the sliding bearing 54 of the ring-type being formed as dull and stereotyped is clamped between lip part 45b and next door 36, the face opposed with next door 36 of lip part 45b is formed with chimeric recess 56, described sliding bearing 54 is fitted together to chimeric recess 56.Therefore, easily in advance sliding bearing 54 can be installed on lip part 45b to make assembling, and can the distance between the lip part 45b of thread spindle 45 and the next door 36 of caliper body 26 be set shorter, thus the axial length that can contribute to electrical braking device shorten.

In addition, retarder 23A possesses the output link 70 coaxial with described thread spindle 45, thread spindle 45 one and the end of the connection shaft portion 45a had coaxially are to described output link 70 coaxially and be directly pressed into, therefore, it is possible to prevent thread spindle 45 relative to the axle offset of output link 70, non-circular without the need to the periphery of the periphery, end of thread spindle 45 and connection shaft portion 45a is formed as cross section, therefore, it is possible to reduce machining period.

In addition, retarder 23A possesses output link 70 and coaxially around the second planetary wheel carrier 69A of this output link 70, and the periphery of output link 70 and the inner circumferential of the second planetary wheel carrier 69A to carry out sawtooth chimeric, even if therefore the axis of thread spindle 45 slightly tilts relative to output link 70, also the self-aligning of the second planetary wheel carrier 69A can be carried out, thus the spin stabilization of the constituting component of retarder 23A.

Wherein, retarder 23A arranges first and second planetary gears 61 between the motor reel 95 and the thread spindle 45 of described thread mechanism 24 of motor 22A, the two-stage planet formula retarder of 62A, and be housed in gear-box 60A, and first planet gear mechanism 61 possesses the first sun gear 63 be arranged on described motor reel 95, be fixed on the internal gear 64 on described gear-box 60A, by the multiple first planet gears 65 engaged with this internal gear 64 and the first sun gear 63 ... supporting is rotatable first planet wheel carrier 66, second planetary gears 62A possesses the secondary sun wheel 67 that periphery is engaged with the inner circumferential of first planet wheel carrier 66, the internal gear 64 shared with first planet gear mechanism 61, by multiple second planetary pinions 68 engaged with this internal gear 64 and secondary sun wheel 67 ... supporting is the second rotatable planetary wheel carrier 69A, described output link 70.

According to this retarder 23A, because the internal gear 64 shared in first and second planetary gears 61,62A is fixed on gear-box 60A, therefore without the need to clamping bearing components between internal gear 64 and gear-box 60A, the minimizing of components number and the miniaturization of gear-box 60A can correspondingly be realized.And, because the inner circumferential of the first planet wheel carrier 66 of first planet gear mechanism 61 engages with the periphery of the secondary sun wheel 67 of the second planetary gears 62A, press-in length required when therefore not needing to guarantee secondary sun wheel 67 to be pressed into first planet wheel carrier 66, the maximization of the axis of the retarder 23A of two-stage planet formula can not only be avoided, and do not need press-fitting step and assembling operation becomes easy, in addition, engaging the self-aligning effect produced and can make spin stabilization by secondary sun wheel 67 and first planet wheel carrier 66.In addition, the peripheral shape of secondary sun wheel 67 is at the mate to first planet wheel carrier 66 with to the second planetary pinion 68 ... mate on identical, thus easily can carry out the processing of secondary sun wheel 67.

In addition, the reduction chamber 59 being made up of a part accommodating recess 35 is accommodated retarder 23A and is formed between the electric case 83 of motor 22A and caliper body 26, wherein, the electric case 83 of motor 22A is arranged on described caliper body 26 in the mode being closed in the described accommodating recess 35 that the caliper body 26 of disk type braker 21A is arranged, described caliper body 26 forms gear-box 60A together with this electric case 83, internal gear 64 stops the mode moved axially to be inserted in reduction chamber 59 with the plectane portion 88b of the lid component 88 of the part by being formed described electric case 83 and caliper body 26, and internal gear 64 carry out concavo-convexly engaging with the mode limiting the rotation around axis of this internal gear 64 and caliper body 26 with the end of described motor 22A opposition side, therefore, can by first and second planetary gears 61, the internal gear 64 shared in 62A is substantially fixed on the caliper body 26 of the part forming gear-box 60A.

And, slit 71 is engaged with the multiple position of circumference of the end of described motor 22A opposition side is arranged at internal gear 64 ... to these engaging slits 71 ... the middle engagement pin 72 inserted respectively ... be arranged on the next door 36 of caliper body 26, therefore, it is possible to reduce the components number being used for substantially being fixed on by internal gear 64 on caliper body 26, and by means of only internal gear 64 is inserted just by engagement pin 72 to reduction chamber 59 ... insert engaging slit 71 ..., therefore the assembling of internal gear 64 becomes easy.

In addition, the described engaging slit 71 circumferentially of internal gear 64 ... width d and described engagement pin 72 ... outer diameter D be set to and allow described internal gear 64 at confined scope intrinsic displacement in the plane of the axis vertical take-off with retarder 23A, therefore internal gear 64 can move engaging slit 71 in plane orthogonal to the axis ... with engagement pin 72 ... between produce gap 74 ... amount, thus the axle offset of first and second planetary gears 61,62A can be absorbed, the transmission of rotating power smoothly in retarder 23A can be realized.

In addition, between the brush carriage 87 of a part forming described electric case 83 and caliper body 26, clamp the sealing component 92 of the ring-type in footpath larger than the inner circumferential of accommodating recess 35, therefore utilize minimal sealing component 92 can the immersion in reduction chamber 59 and in electric case 83 such as anti-sealing.

In addition, in first planet gear mechanism 61, multiple first rest pin 75 ... an end be fixed on first planet wheel carrier 66, first rest pin 75 ... the other end through being arranged on first planet gear 65 ... on the first bearing hole 76 ... but due to each first rest pin 75 ... the opposed annular recessed portion 91 in the other end be formed in gear-box 60A with first planet gear 65 ... on opposed wall, be formed on a part for the electric case 83 forming gear-box 60A together with caliper body 26 and the plat part 88b of lid component 88 in this embodiment 1, therefore, can prevent because first planet wheel carrier 66 is relative to first planet gear 65 ... axial relative movement and from first planet gear 65 ... the first outstanding rest pin 75 ... the other end and the internal surface of gear-box 60A situation about coming in contact, and simultaneously can by the first rest pin 75 ... length setting must be longer, thus, the first rest pin 75 can be increased ... to first planet gear 65 ... insertion and guarantee first planet gear 65 ... rotational stabilization.

In addition, the accommodating recess 35 be arranged on caliper body 26 is closed when motor 22A installs to caliper body 26 and forms a part for reduction chamber 59, be opened when motor 22A takes off from caliper body 26, and retarder 23A has and can engage for 12 jiaos of sleeves 80 and be fixed on the output link 70 of thread spindle 45, and output link 70 can be retained in when reduction chamber 59 is opened wide and carry out decomposing in this accommodating recess 35 and make output link 70 be contained in reduction chamber 59, therefore motor 22A to be taken off and under the state that the major part of retarder 23A is taken off, 12 jiaos of sleeves 80 are made to engage with output link 70 and carry out rotary manipulation, parking braking state can be removed thus, just manually-operable power can not be passed to the thread spindle 45 of thread mechanism 24 via retarder 23A, thus parking braking state can be removed with smaller manually-operable amount.

The resinous brush carriage 87 that motor 22A possesses is provided with to the capacitor 104 for reducing radio noise ... carry out the capacitor holding part 105 kept ...Therefore, by capacitor holding part 105 ... carry out keeping capacitor 104, suppression capacitor 104 ... there is situation about trembleing because of vibration, thus capacitor 104 can be prevented ... electrical connection removed or capacitor 104 ... terminal 104a ..., 104b ... the situation of bending.And, due to capacitor holding part 105 can be utilized ... carry out keeping capacitor 104 ... therefore at capacitor 104 ... terminal 104a ..., 104b ... electrical connection time do not need press capacitor 104 ... thus can assembling operation be improved, by capacitor 104 ... do not need binder etc. when being held in brush carriage 87, thus cost reduction can be realized.

And capacitor holding part 105 has: supporting surface 106, its plane along the axis vertical take-off with described motor 22A is formed, and is formed at brush carriage 87 in the mode making the one side of described capacitor 104 abut; A pair hook portion 107,108, they are integrally formed in brush carriage 87, and between they and described supporting surface 106, clip described capacitor 104, and described capacitor holding part 105 is the simple structure of the movement in the plane of the axis vertical take-off with described motor 22A of the described capacitor 104 of restriction, thus can by simple structure by capacitor 104 ... be held in brush carriage 87.

In addition, between the motor room 84 formed in the electric case 83 of motor 22A and the reduction chamber 59 being formed at caliper body 26 at least partially and accommodating retarder 23A, be configured with insulated space 121, therefore, it is possible to suppress from motor 22A to the heat trnasfer of retarder 23A side, even if the parts forming retarder 23A are synthetic resin system, its thermal distortion and intensity also can be suppressed to decline.

In addition, brush carriage 87 forms a part for electric case 83 and around the opening end of accommodating recess 35, is anchored on caliper body 26 and is clipped between described motor room 84 and described reduction chamber 59, this brush carriage 87 is provided with the insulated space recess 122 for the formation of described insulated space 121, therefore, it is possible to form the lightweight that insulated space 121 also realizes brush carriage 87 and electric case 83 simultaneously, and the decline of further cost can be realized by material reduction.

In addition, the ball bearing 97 be with and sealed is clamped between the lid component 88 of a part for formation electric case 83 in motor 22A and motor reel 95, this ball bearing 97 is for preventing lubricating grease from reduction chamber 59 to the inflow of motor room 84, but owing to being formed with the access 123 will linked between reduction chamber 59 and motor room 84 at the peripheral part of electric case 83, therefore pressure difference can not be produced between reduction chamber 59 and motor room 84, thus do not need the processing of carrying out improving sealed precision near the ball bearing 97 of the band sealed department clamped between motor reel 95 and lid component 88, or add other sealed member, the simple structure avoiding cost increase of access 123 is formed by means of only the peripheral part at electric case 83, lubricating grease just can be prevented to the inflow of motor room 84.And due to access 123 be labyrinth-like, therefore, it is possible to prevent lubricating grease via access 123 to motor room 84 flow into situation.

In addition, chimeric holding cylinder 103 ... brush carriage 87 is arranged at towards motor room 84, this chimeric holding cylinder 103 ... the brush 102 of sliding contact is carried out by with the commutator 98 be arranged on motor reel 95 ... be held in and slide freely, brush carriage 87 is provided with cylindrical part 87a integratedly, this cylindrical part 87a is configured in the chimeric holding cylinder 103 of the radial direction along yoke portion 86 in electric case 83 ... outside and with the open end inner circumferential in yoke portion 86 close to opposed, the annular spaces 127 of the part forming access 123 is formed between the open end inner circumferential and the periphery of cylindrical part 87a in yoke portion 86, therefore, even if lubricating grease is just in case flow into access 123, lubricating grease also can not arrive brush 102 ... the sliding contacting part to commutator 98 sliding contact, thus brush 102 ... the sliding contacting part to commutator 98 sliding contact can not be subject to lubricating grease produce impact.

And, outstanding and be arranged at brush carriage 87 integratedly to the outside side of 87b, Coupler portion that motor 22A powers, brush carriage 87 is arranged in described motor room 84 with the ft connection road 128 of ft connection, therefore, it is possible to make motor room 84 and reduction chamber 59 and outer air pressure be the movement that identical pressure prevents lubricating grease via in this Coupler portion 87b.And, Coupler portion 87b is connected with aerial lug, therefore the situation that water or dust etc. invade from ft connection road 128 in motor room 84 can not occur.

[embodiment 2]

With reference to Figure 14 ~ Figure 18, embodiments of the invention 2 are described, same reference marks are marked to the part corresponding with embodiment 1 and only illustrates, detailed.

First, in Figure 14 and Figure 15, this electric brake device for vehicle possesses: disk type braker 21B; Be arranged on the positive and negative rotation motor 22B freely on the caliper body 26 of this disk type braker 21B; The retarder 23B linked with this motor 22B; The rotary motion exported from retarder 23B is converted to axially retreat motion and the thread mechanism 24 that is arranged between the brake piston 38 of disk type braker 21B and described retarder 23B.

Disk type braker 21B possesses: disc rotor 25B; Arranged opposite with the bi-side of this disc rotor 25B, and be configured in a pair friction pad 27,28 between disc rotor 25B and caliper body 26.

The opening end of accommodating recess 35 is closed and is arranged on the housing section 26a of caliper body 26 by the electric case 137 of described motor 22B, reduction chamber 133 is formed in the gear-box 60B be made up of described electric case 137 and described caliper body 26, this reduction chamber 133 at least forms a part by accommodating recess 35, in this reduction chamber 133, contain described retarder 23B.

The thread spindle 45 of described thread mechanism 24 similarly to Example 1, possess the lip part 45b opposed with the next door 36 of caliper body 26 integratedly, the sliding bearing 54 of dull and stereotyped ring-type is fitted together to the chimeric recess 56 be arranged on this lip part 45b, between this sliding bearing 54 and next door 36, clamped pad 55.

Between the connection shaft portion 45a of described retarder 23B by thread spindle 45 in the motor reel 95 and described thread mechanism 24 of motor 22B, first planet gear mechanism 61 is set and the second planetary gears 62B forms.

In the lump with reference to Figure 16 and Figure 17, first planet gear mechanism 61 possesses the first sun gear 63 be arranged on described motor reel 95, be fixed on the internal gear 64 on described gear-box 60B, by multiple such as three the first planet gears 65 engaged with this internal gear 64 and the first sun gear 63 ... supporting is rotatable first planet wheel carrier 66, second planetary gears 62B possesses the secondary sun wheel 67 that periphery is engaged with the inner circumferential of first planet wheel carrier 66, the described internal gear 64 shared with first planet gear mechanism 61, by multiple such as three the second planetary pinions 68 engaged with this internal gear 64 and secondary sun wheel 67 ... supporting is the second rotatable planetary wheel carrier 69B.

The described internal gear 64 shared in first and second planetary gears 61,62B is structure similarly to Example 1 and be fixed on gear-box 60B.Namely, multiplely engage slit 71 having with the end of described motor 22B opposition side ... internal gear 64 by forming the lid component 141 of a part for the electric case 137 of described motor 22B, the next door 36 of caliper body 26 carrys out restrictive axial and moves and be inserted into described reduction chamber 133, internal gear 64 with the end of motor 22B opposition side by being arranged on the engagement pin 72 on next door 36 ... be inserted into described engaging slit 71 ... in, and carry out concavo-convexly engaging with the next door 36 of caliper body 26.

And, under the state being arranged on the housing section 26a of caliper body 26 at electric case 137, the opening end of the accommodating recess 35 in caliper body 26 is closed by the described lid component 141 of the part forming described electric case 137, the internal gear 64 of retarder 23B is limited the movement of circumference by carrying out concavo-convex engaging with the next door 36 of caliper body 26, therefore move by utilizing next door 36 and lid component 141 to carry out restrictive axial and be substantially fixed on gear-box 60B.

In first planet gear mechanism 61, an end is fixed on the first rest pin 75 on first planet wheel carrier 66 ... the other end through being separately positioned on first planet gear 65 ... on the first bearing hole 76 ...And, form the lid component 141 in the described electric case 137 of a part of described gear-box 60B and first planet gear 65 ... opposed, and annular recessed portion 134 with described each first rest pin 75 ... the opposed mode in the other end be formed at this lid component 141.

Second planetary pinion 68 ... with engaging with the half portion periphery of described motor 22B opposition side of described secondary sun wheel 67, second rest pin 77 ... an end waited by press-in and be fixed on the second planetary wheel carrier 69B of the ring-type being formed as dull and stereotyped circumferentially separate on such as three positions, equally spaced multiple position, the second rest pin 77 ... the other end be inserted at the second planetary pinion 68 respectively ... central part arrange the second bearing hole 78 ... in.

In described thread mechanism 24 with thread spindle 45 coaxially and the end of the retarder 23B side of the connection shaft portion 45a be connected integratedly protrude into described reduction chamber 133, the end of this connection shaft portion 45a is by directly and be pressed into coaxially in the press-in hole 135 arranged at the central part of the second planetary wheel carrier 69B.

But, state reduction chamber 133 opened described motor 22B is taken off from described caliper body 26, form reduction chamber 133 at least partially and the accommodating recess 35 be arranged on caliper body 26 becomes the state of opening, in this condition, second planetary wheel carrier 69B can be retained in accommodating recess 35 and retarder 23B is decomposed, wherein be pressed into the connection shaft portion 45a be connected with thread spindle 45 one of thread mechanism 24 in this second planetary wheel carrier 69B, the the second planetary wheel carrier 69B stayed is provided with and can engages rotary manipulation instrument and be formed as the non-circular multiple card complex hole 136 of cross section ...

The electric case 137 of motor 22B forms motor room 138 therein and is arranged on the housing section 26a of caliper body 26, and it comprises: have the metal yoke portion 139 being formed as bottomed cylindrical to radial direction lip part 139a protruding outside integratedly at open end; The metal bearing bracket 140 of the opening end configuration in this yoke portion 139; Peripheral part is abutted and the plastic lid component 141 of being closed by the opening end in described yoke portion 139 with described lip part 139a.

Described bearing bracket 140 is formed by the bending forming of sheet metal, the plectane portion 140b having cylindric cartridge housing body 140a and extend from the outside side of this cartridge housing body 140a, multiple position of the peripheral part of plectane portion 140b and the opening end inner peripheral portion in described yoke portion 139 carry out fastening combination.

In the lump with reference to Figure 18, described lid component 141 is formed by synthetic resin, have the mode that the accommodating recess 35 be arranged on caliper body 26 is closed can be formed as discoideus and be formed with recess 142 at the multiple positions having separated interval in the circumference of its periphery integratedly ... lid component principal part 141a, and use and the Coupler portion 141b outstanding from the outside side of described lid component principal part 141a as powering to motor 22B, between described lid component 141 and caliper body 26, form reduction chamber 133 and described lid component 141 is clipped between described caliper body 26 and described lip part 139a, and pass through by multiple bolt 143 ... carry out jointly fastening and described lip part 139a and described lid component 141 are anchored on described caliper body 26.

And, the outer circumferential face of described lid component principal part 141a is formed with multiple lug boss 141c ... be configured in described lug boss 141c respectively ... between described recess 142 ... described lug boss 141c ... in be embedded with for described bolt 143 ... the collar 144 of the cylindrical shape of passing ..., at the described lug boss 141c of the radial direction along described lid component principal part 141a ... inner end be formed and make described lug boss 141c ... the described recess 142 of both sides ... the weight reduction intercommunicating pore 145 be interconnected ...

In addition, on any one face in the face of the described motor 22B side of lid component principal part 141a and the face of described retarder 23B side, the face of the motor 22B side of the lid component principal part 141a in the present embodiment 2 is provided with insulated space recess 147, by the insulated space recess 147 of described lid component principal part 141a and the metal bearing bracket 140 of opening end being configured in yoke portion 139 in the mode covering this insulated space recess 147, form insulated space 146, between the motor room 138 that this insulated space 146 is clipped in formation in described electric case 137 and described reduction chamber 133.

In addition, rib 148 is provided with integratedly in the periphery of described lid component principal part 141a ..., this rib 148 ... at described recess 142 ... each configuration is multiple.

The motor reel 95 of described motor 22B supports as rotatable by described electric case 137, one end of this motor reel 95 is supported as rotatable via ball bearing 96 by the bearing housing 139b be arranged on the dead end central part in described yoke portion 139, and the other end of motor reel 95 protrudes into reduction chamber 133 with the through bearing bracket 140 of rotatable mode and lid component 141, carve in reduction chamber 133 and in the periphery, the other end of motor reel 95 and be provided with the first sun gear 63, the ball bearing 97 be with and sealed is clamped between the cartridge housing body 140a and motor reel 95 of bearing bracket 140.

Arrange in described motor room 138 and on described motor reel 95 there is the armature 99 of commutator 98, be fixed with multiple magnet 100,100 in the part corresponding with armature 99 in the inner circumferential in described yoke portion 139 ...

In addition, be supported with brush carriage 152 regularly in the inner surface side of described bearing bracket 140, the brush (not shown) supported as sliding by this brush carriage 152 carries out sliding contact with described commutator 98.

In addition, between the housing section 26a and described lid component 141 of caliper body 26, clamp the sealing component 92 of the ring-type in footpath larger than the inner circumferential of described accommodating recess 35, clamped between the lip part 139a and lid component 141 in yoke portion 139 and be positioned at than bolt 143 ... the sealing component 93 of configuration position ring-type in the inner part.

According to this embodiment 2, similarly to Example 1, the face opposed with next door 36 of the lip part 45b of thread spindle 45 is formed with chimeric recess 56, and the sliding bearing 54 of dull and stereotyped ring-type is fitted together to chimeric recess 56, therefore in order to make assembling easily in advance sliding bearing 54 can be installed on lip part 45b, and can set shorter by the distance between the lip part 45b of thread spindle 45 and the next door 36 of caliper body 26, thus the axial length that can contribute to electrical braking device shortens.

In addition, retarder 23B possesses the second planetary wheel carrier 69B coaxial with described thread spindle 45, thread spindle 45 one and the end of the connection shaft portion 45a had coaxially are to the second planetary wheel carrier 69B coaxially and be directly pressed into, therefore, it is possible to prevent thread spindle 45 relative to the axle offset of the second planetary wheel carrier 69B, and non-circular without the need to the periphery of the periphery, end of thread spindle 45 and connection shaft portion 45a is formed as cross section, therefore, it is possible to reduce machining period.

Retarder 23B is by arranging first and second planetary gears 61 between the motor reel 95 and the thread spindle 45 of described thread mechanism 24 of motor 22B, the two-stage planet formula retarder of 62B, and be housed in gear-box 60B, first planet gear mechanism 61 possesses the first sun gear 63 be arranged on described motor reel 95, be fixed on the internal gear 64 on described gear-box 60B, by the multiple first planet gears 65 engaged with this internal gear 64 and the first sun gear 63 ... supporting is rotatable first planet wheel carrier 66, second planetary gears 62B possesses the secondary sun wheel 67 that periphery is engaged with the inner circumferential of first planet wheel carrier 66, the internal gear 64 shared with first planet gear mechanism 61, by multiple second planetary pinions 68 engaged with this internal gear 64 and secondary sun wheel 67 ... supporting is the second rotatable planetary wheel carrier 69B.

According to this retarder 23B, because the internal gear 64 shared in first and second planetary gears 61,62A is fixed on gear-box 60B, therefore without the need to clamping bearing components between internal gear 64 and gear-box 60B, the minimizing of components number and the miniaturization of gear-box 60B can correspondingly be realized.And, because the inner circumferential of the first planet wheel carrier 66 of first planet gear mechanism 61 engages with the periphery of the secondary sun wheel 67 in the second planetary gears 62B, press-in length required when therefore not needing to guarantee secondary sun wheel 67 to be pressed into first planet wheel carrier 66, the maximization of the axis of the retarder 23B of two-stage planet formula can not only be avoided, and do not need press-fitting step and assembling operation becomes easy, in addition, engaging the self-aligning effect produced and can make spin stabilization by secondary sun wheel 67 and first planet wheel carrier 66.In addition, the peripheral shape of secondary sun wheel 67 is at the mate to first planet wheel carrier 66 with to the second planetary pinion 68 ... mate on identical, thus easily can carry out the processing of secondary sun wheel 67.

Between the electric case 137 being installed on the motor 22B on described caliper body 26 being closed by the accommodating recess be arranged on caliper body 26 35 and described caliper body 26, be formed with the reduction chamber 133 of collecting retarder 23B, internal gear 64 stops the mode moved axially to be inserted in reduction chamber 133 with the lid component 141 of the part by being formed described electric case 137 and caliper body 26, and internal gear 64 carry out concavo-convexly engaging with the mode limiting the rotation around axis of this internal gear 64 and caliper body 26 with the end of described motor 22B opposition side, therefore, can by first and second planetary gears 61, the internal gear 64 shared in 62B is substantially fixed on caliper body 26.

And, slit 71 is engaged with the multiple position of circumference of the end of described motor 22B opposition side is arranged at internal gear 64 ... to these engaging slits 71 ... the engagement pin 72 inserted respectively ... be arranged on the next door 36 of caliper body 26, therefore, it is possible to reduce the components number being used for substantially being fixed on by internal gear 64 on caliper body 26, and can by means of only internal gear 64 is inserted just by engagement pin 72 to reduction chamber 59 ... insert engaging slit 71 ..., therefore the assembling of internal gear 64 becomes easy.

In addition, the sealing component 92 of the ring-type in footpath larger than the inner circumferential of accommodating recess 35 is clamped, therefore, it is possible to utilize the immersion in reduction chamber 133 and in electric case 137 such as the anti-sealing of minimal sealing component 92 between the lid component 141 of a part forming described electric case 137 and caliper body 26.

In addition, in first planet gear mechanism 61, multiple first rest pin 75 ... an end be fixed on first planet wheel carrier 66, first rest pin 75 ... the other end through being arranged on first planet gear 65 ... on the first bearing hole 76 but due to each first rest pin 75 ... the opposed annular recessed portion 134 in the other end be formed in gear-box 60B with first planet gear 65 ... on opposed wall, be formed on the lid component 141 of the part forming electric case 137 in this embodiment 2, this electric case 137 forms gear-box 60B together with caliper body 26, therefore, can prevent because first planet wheel carrier 66 is relative to first planet gear 65 ... axial relative movement and from first planet gear 65 ... the first outstanding rest pin 75 ... the other end and the internal surface of gear-box 60B situation about coming in contact, and simultaneously can by the first rest pin 75 ... length setting must be longer, thus, the first rest pin 75 can be increased ... to first planet gear 65 ... insertion and guarantee first planet gear 65 ... rotational stabilization.

In addition, the accommodating recess 35 be arranged on caliper body 26 is closed when motor 22B installs to caliper body 26 and forms a part for reduction chamber 133, be opened when motor 22B takes off from caliper body 26, and retarder 23B has the second planetary wheel carrier 69B, this second planetary wheel carrier 69B is provided with can for multiple card complex holes 136 of rotary manipulation tool engagement ... and be fixed on thread spindle 45, and the second planetary wheel carrier 69B can be retained in when reduction chamber 133 is opened wide and carry out decomposing in this accommodating recess 35 and make the second planetary wheel carrier 69B be contained in reduction chamber 133, therefore motor 22B to be taken off and under the state that the major part of retarder 23B is taken off, rotary manipulation instrument is made to engage with the second planetary wheel carrier 69B and carry out rotary manipulation, parking braking state can be removed thus, and via retarder 23B, manually-operable power can not be delivered to the thread spindle 45 of thread mechanism 24, therefore, it is possible to remove parking braking state with smaller manually-operable amount.

In addition, between the motor room 138 formed in the electric case 137 of motor 22B and the reduction chamber 133 being formed at caliper body 26 at least partially and accommodating retarder 23B, be configured with insulated space 146, therefore, it is possible to suppress from motor 22B to the heat trnasfer of retarder 23B side, even if the parts forming retarder 23B are synthetic resin system, its thermal distortion and intensity also can be suppressed to decline.

In addition, lid component 141 forms a part for electric case 137 and around the opening end of accommodating recess 35, is anchored on caliper body 26 and is clipped between described motor room 138 and described reduction chamber 133, this lid component 141 is provided with the insulated space recess 147 for the formation of described insulated space 146, therefore, it is possible to form the lightweight that insulated space 146 also realizes lid component 141 and electric case 137 simultaneously, and the decline of further cost can be realized by material reduction.

In addition, lid component 141 is formed by synthetic resin, have the mode that the accommodating recess 35 be arranged on caliper body 26 is closed to be formed as discoideus lid component principal part 141a integratedly, use and the Coupler portion 141b outstanding from the outside side of described lid component principal part 141a as powering to motor 22B, multiple lug boss 141c is formed at the outer circumferential face of lid component principal part 141a ... be configured in described lug boss 141c respectively ... between recess 142 described lug boss 141c ... in be embedded with for bolt 143 ... the collar 144 of the cylindrical shape of passing at the described lug boss 141c of the radial direction along described lid component principal part 141a ... inner end be formed and make described lug boss 141c ... the described recess 142 of both sides ... the weight reduction intercommunicating pore 145 be interconnected therefore, it is possible to the cost of the lightweight and material reduction generation that realize lid component 141 declines.And, even if the water from outside becomes the recess 142 of top position when entering into vehicle boarded ... also water recess 142 effluent downwards can be moved via weight reduction intercommunicating pore 145, thus anti-sealing lodges in recess 142, the rust Producing reason of the parts becoming surrounding can be avoided, and can prevent the durability of lid component 141 from declining.

And, be provided with rib 148 integratedly in the periphery of lid component principal part 141a ..., this rib 148 ... at described recess 142 ... each configuration is multiple, therefore, it is possible to prevent from forming recess 142 ... the intensity of the lid component 141 caused declines.

Above, embodiments of the present invention are illustrated, but the present invention not being defined as above-mentioned mode of execution, can various design alteration being carried out when not departing from its purport.

Claims

1. an electric brake device for vehicle, it possesses: disk type braker (21A, 21B), and it makes friction pad (27,28) opposed with the side of disc rotor (25A, 25B); Motor (22A, 22B); Movement conversion mechanism (24), it has running shaft (45) and according to the rotation of this running shaft (45), described friction pad (27,28) is retreated relative to described disc rotor (25A, 25B); Retarder (23A, 23B), its by first and second planetary gears (61,62A; 61,62B) form, and be arranged between described motor (22A, 22B) and described running shaft (45),

The feature of described electric brake device for vehicle is,

First planet gear mechanism (61) possesses: at upper the first sun gear (63) arranged of the motor reel (95) of described motor (22A, 22B); Internal gear (64); The first planet gear (65) that will engage with this internal gear (64) and the first sun gear (63) supports as rotatable first planet wheel carrier (66),

Second planetary gears (62A, 62B) possesses: the secondary sun wheel (67) rotated together with first planet wheel carrier (66); The described internal gear (64) shared with first planet gear mechanism (61); Second planetary pinion (68) that will engage with this internal gear (64) and secondary sun wheel (67) supports as rotatable, and and second planetary wheel carrier (69A, 69B) that can not with the relative rotation link coaxial with described running shaft (45)

Described motor (22A, electric case (83 22B), 137) with at itself and described disk type braker (21A, described retarder (the 23A of collecting is formed between caliper body (26) 21B), reduction chamber (59 23B), 133) mode is installed on this caliper body (26), described internal gear (64) is with by described electric case (83, 137) and described caliper body (26) stop the mode moved axially to be inserted into described reduction chamber (59, 133) in, described internal gear (64) with described motor (22A, 22B) end of opposition side carries out concavo-convexly engaging with the mode limiting the rotation around axis of this internal gear (64) and described caliper body (26),

Described internal gear (64) with described motor (22A, 22B) the multiple position of the circumference of the end of opposition side is provided with engaging slit (71), the engagement pin (72) inserted respectively to these engagings slit (71) is arranged at described caliper body (26), along the width of described engaging slit (71) of the circumference of described internal gear (64) and the external diameter of described engagement pin (72) be set to described retarder (23A, allow described internal gear (64) at confined scope intrinsic displacement in the plane of axis vertical take-off 23B).

2. electric brake device for vehicle according to claim 1, is characterized in that,

The accommodating recess (35) of being closed by described electric case (83,137) is arranged at described caliper body (26) in the mode of the part forming described reduction chamber (59,133), clamps the sealing component (92) of the diameter ring-type larger than the diameter of the inner circumferential of described accommodating recess (35) between described electric case (83,137) and described caliper body (26).