CN102762883A

CN102762883A - Electric brake device for vehicle

Info

Publication number: CN102762883A
Application number: CN201180007087XA
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: 2012-10-31
Anticipated expiration: 2031-02-25
Also published as: WO2011108450A1; CN102762883B; JP5292338B2; WO2011108450A9; JP2011179652A

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

Vehicle is used electrical braking device

Technical field

The present invention relates to a kind of vehicle and use electrical braking device, it possesses: the opposed disk type braker in side that makes friction pad and disc rotor; Motor; Have running shaft and make the movement conversion mechanism of said friction pad with respect to said disc rotor advance and retreat according to the rotation of this running shaft; Constitute and be arranged on the retarder between said motor and the said running shaft by first and second planetary gears.

Background technique

Through patent documentation 1; Known have 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 that is housed in the two-stage planet formula in the gear-box is made up of first planetary gears and second planetary gears; This first planetary gears possess first sun gear that is arranged on the motor reel, by the housing supporting be freely internal gear of rotation, will be with first planetary pinion supporting of this internal gear and the engagement of first sun gear rotation freely and be fixed in first planetary wheel carrier of said gear-box; Second planetary gears possesses the secondary sun wheel that is arranged on the said input shaft, with the shared said internal gear of first planetary gears, will be rotation second planetary wheel carrier freely with second planetary pinion supporting of this internal gear and secondary sun wheel engagement, the thread spindle of second planetary wheel carrier and said thread mechanism is with coaxial and can not counterrotating mode link.

[technical paper formerly]

[patent documentation]

[patent documentation 1] TOHKEMY 2006-183723 communique

Yet; In the retarder of above-mentioned patent documentation 1 disclosed two-stage planet formula; Internal gear shared in first and second planetary gears is to rotate freely by the gear-box supporting; And between internal gear and gear-box, clamp the pair of ball bearing in bigger footpath, thereby not only components number increases, and can cause the maximization of gear-box.

In order to solve this problem, consideration will be fixed in gear-box by shared internal gear in first and second planetary gears, and in this case, expectation does one's utmost to reduce the components number that is used for fixing internal gear, and makes the assembling of internal gear easy.

Summary of the invention

The present invention is in view of above-mentioned situation and proposing, its purpose be to provide a kind of do one's utmost to reduce be used for the fixing components number of internal gear that first and second planetary gears is possessed jointly, and the assembling of internal gear is easy to vehicle and uses electrical braking device.

To achieve these goals, the present invention relates to a kind of vehicle and use electrical braking device, it possesses: disk type braker, and it makes the side of friction pad and disc rotor opposed; Motor; Movement conversion mechanism, it has running shaft and according to the rotation of this running shaft said friction pad is advanced and retreat with respect to said disc rotor; Retarder; It is made up of first and second planetary gears; And be arranged between said motor and the said running shaft; Said vehicle is characterised in that with first of electrical braking device; First planetary gears possesses first sun gear that on the motor reel of said motor, is provided with, internal gear, will be rotation first planetary wheel carrier freely with first planetary pinion supporting of this internal gear and the engagement of first sun gear; Second planetary gears possess the secondary sun wheel that rotates with first planetary wheel carrier, with the shared said internal gear of first planetary gears, will with second planetary pinion supporting of this internal gear and secondary sun wheel engagement for rotation freely and with the said rotating shaft coaxle and second planetary wheel carrier that can not link with the relative rotation; The electric case of said motor is installed on this brake calipers main body with the mode that between the brake calipers main body of itself and said disk type braker, forms the reduction chamber of accommodating said retarder; Said internal gear to be stoping axially movable mode to be inserted in the said reduction chamber by said electric case and said brake calipers main body, said internal gear and end said motor opposition side with limit this internal gear carry out concavo-convexly engaging around the mode of the rotation of axis and said brake calipers main body.

In addition; The present invention is on the basis of the structure of first characteristic; It second is characterised in that; On circumferential a plurality of positions of said internal gear and end said motor opposition side, be provided with and engage slit, the engagement pin that inserts respectively to these engaging slits is arranged at said brake calipers main body, the external diameter along circumferential width and said engagement pin of said internal gear set for the plane of the orthogonal axe of said retarder in allow said internal gear at confined scope intrinsic displacement.

In addition; The present invention is on the basis of the structure of first or second characteristic; It the 3rd is characterised in that; The recess of accommodating of being closed by said electric case is arranged at said brake calipers main body with the mode of the part that constitutes said reduction chamber, between said electric case and said brake calipers main body, clamp than said accommodate recess interior week big footpath the sealing component of ring-type.

Need to prove that the thread mechanism 24 of mode of execution is corresponding to movement conversion mechanism of the present invention, the thread spindle 45 of mode of execution is corresponding to running shaft of the present invention.

[invention effect]

In accordance with a first feature of the invention; Be fixed in the brake calipers main body through the internal gear that first and second planetary gears is shared substantively; And need not between internal gear and brake calipers main body, to clamp bearing components, correspondingly can realize the minimizing of components number and the miniaturization of brake calipers main body.

And; According to second characteristic of the present invention; Because on circumferential a plurality of positions of internal gear and the end motor opposition side, be provided with engage to insert in the slit is arranged on the engagement pin on the brake calipers main body; Therefore can reduce and be used for internal gear is fixed on the components number on the brake calipers main body substantively, and can only engage in the slit, so the assembling of internal gear becomes easy through internal gear being inserted into just engagement pin is inserted in the reduction chamber.And, can make internal gear with the axle plane orthogonal in move and to engage the gap value that produces between slit and the engagement pin, thereby can absorb the axle offset of first and second planetary gears, and then can realize the transmission of rotating power smoothly in the retarder.

In addition; According to the 3rd characteristic of the present invention; The sealing component that is installed in the ring-type between electric case and the brake calipers main body is than a part that constitutes reduction chamber and be arranged on the big footpath of interior week of accommodating recess on the brake calipers main body, therefore can utilize minimal sealing component prevent that sealing etc. reaches the immersion in the electric case in reduction chamber.

Description of drawings

Fig. 1 is the longitudinal sectional view of embodiment 1 vehicle with electrical braking device.(first embodiment)

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

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

Fig. 4 is the 4 arrow indication portion enlarged views of Fig. 1.(first embodiment)

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

Fig. 6 is the 6 arrow indication portion enlarged views of Fig. 2.(first embodiment)

Fig. 7 is the sectional views of 12 jiaos of sleeves of expression to the fastening state of output link.(first embodiment)

Fig. 8 is the plan view that obtains from motor room's side observation brush carriage.(first embodiment)

Fig. 9 is the rear view that obtains from retarder side observation brush carriage.(first embodiment)

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

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

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

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

Figure 14 is the longitudinal sectional view of embodiment 2 vehicle with electrical braking device.(second embodiment)

Figure 15 is the major component side view of vehicle with electrical braking device.(second embodiment)

Figure 16 is the 16 arrow indication portion enlarged views of Figure 14.(second embodiment)

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

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

[symbol description]

21A, 21B ... Disk type braker

22A, 22B ... Motor

23A, 23B ... Retarder

24 ... Thread mechanism as movement conversion mechanism

25A, 25B ... Disc rotor

26 ... The brake calipers main body

27,28 ... Friction pad

35 ... Accommodate recess

45 ... Thread spindle as running shaft

59,133 ... Reduction chamber

61 ... First planetary gears

62A, 62B ... Second planetary gears

63 ... First sun gear

64 ... Internal gear

65 ... First planetary pinion

66 ... First planetary wheel carrier

67 ... Secondary sun wheel

68 ... Second planetary pinion

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

71 ... The engaging slit

72 ... Engagement pin

83,137 ... Electric case

92 ... Sealing component

95 ... Motor reel

Embodiment

Below, with reference to accompanying drawing, mode of execution of the present invention is described.

[embodiment 1]

With reference to Fig. 1～Figure 13, embodiments of the invention 1 are described, at first, in Fig. 1, this vehicle possesses with electrical braking device: disk type braker 21A; The positive and negative rotation motor 22A freely that installs in the brake calipers main body 26 of this disk type braker 21A; Retarder 23A with this motor 22A binding; To convert axial advance and retreat motion to and be arranged on the brake piston 38 of said disk type braker 21A and the thread mechanism 24 between the said retarder 23A from rotatablely moving of retarder 23A output as movement conversion mechanism.

Disk type braker 21A can obtain the service brake state based on hydraulic pressure, and carries out work through motor 22A and can access the break of parking braking state, and it possesses: the disc rotor 25A that rotates with the wheel of not shown wheel; Brake calipers main body 26; With the bi-side arranged opposite of disc rotor 25A, and be configured in a pair of

friction pad

27,28 between disc rotor 25A and the brake calipers main body 26.

With reference to Fig. 2, said brake calipers main body 26 possesses in the lump: by the carriage that is installed in body side 29 supporting at the housing section 26a that on the direction of the axis of said disc rotor 25A, can slide; Stride across the arm 26b that disc rotor 25A extends to opposition side from housing section 26a.

Opposed friction pad 27 is arranged at clad lining 32 through the friction facing 30 that will can bring into play frictional force with disc rotor 25A sliding contact and constitutes in the side of the housing section 26a of said brake calipers main body 26 side and disc rotor 25A; Be arranged at clad lining 33 at the opposed friction pad 28 in another side of the arm 26b side of said brake calipers main body 26 and disc rotor 25A through the friction facing 31 that will can bring into play frictional force with disc rotor 25A sliding contact and constitute, two

friction pads

27,28 can remain in said carriage 29 movably on the direction of the axis of disc rotor 25A.

Housing section 26a in brake calipers main body 26 is provided with: have and the axis of the parallel axes of said disc rotor 25A and the clutch release slave cylinder hole of opening wide to said friction pad 27 sides 34; Accommodate recess 35 to what the opposition side of said friction pad 27 opened wide; Be clipped in clutch release slave cylinder hole 34 and accommodate the next door 36 between the recess 35.Clutch release slave cylinder hole 34 and accommodate recess 35 and form with the mode that on same axis, has circular cross-section, the central part in said next door 36 is provided with clutch release slave cylinder hole 34 and accommodates the through hole 37 that recess 35 links coaxially.

In clutch release slave cylinder hole 34, contain and to carry out brake piston 38 in axial sliding; This brake piston 38 form front end inaccessible the round-ended cylinder shape arranged; And between itself and said next door 36, form hydraulic chamber 39; Clad lining 32 butts of the front end of this brake piston 38 and said friction pad 27, and engage with said clad lining 32 in order to stop the rotation in clutch release slave cylinder hole 34.

In addition; Internal surface in clutch release slave cylinder hole 34 is equipped with the piston seal 40 that is installed in the ring-type between brake calipers main body 26 and the brake piston 38; Between the open end in clutch release slave cylinder hole 34 and brake piston 38, be provided with the dust-proof cover 41 of ring-type, be provided with hydraulic pressure road 42 to said hydraulic chamber 39 guiding hydraulic pressure at housing section 26a.

The nut 46 that thread mechanism 24 possesses the thread spindle 45 coaxial with clutch release slave cylinder hole 34, can not engage with brake piston 38 with the relative rotation and screw togather with said thread spindle 45, and this thread mechanism 24 is housed in the housing section 26a of brake calipers main body 26 with the mode of the behind that is configured in brake piston 38.

At the opposition side of said brake piston 38 and in the rear end of thread spindle 45; Coaxial and be provided with the binding axial region 45a that connects the through hole 37 in next door 36 with freely mode of rotation integratedly; And in clutch release slave cylinder hole 34,, between said next door 36 and binding axial region 45a, clamped O-ring seals 47 to be provided with integratedly to the outstanding lip part 45b in the radial direction outside with said next door 36 opposed modes.

With reference to Fig. 3, said thread spindle 45 screws togather with the nut 46 that centers on this thread spindle 45 in said brake piston 38 in the lump.This nut 46 have integratedly coaxially cylindrical part 46a (with reference to Fig. 1) around said thread spindle 45, from the front end of this cylindrical part 46a to the outstanding engagement portion 46b in the radial direction outside, from this engagement portion the front end central part of 46b forwards outstanding and with the butt teat 46c of the front end internal surface butt of said brake piston 38, the tapped hole 48 that supplies said thread spindle 45 to screw togather is provided with on the axial whole length of nut 46.

The periphery of said engagement portion 46b has the

teat

49,49 that for example disposes on 8 positions at equally spaced a plurality of positions along circumferentially spaced ... And form petal-shaped, have and per two said

teats

49,49 as all shape of cross sections in the front portion of the brake piston that the round-ended cylinder shape is arranged 38 ... Four corresponding planar surface portion 50 ..., with above-mentioned planar surface portion 50 ... Between four curved parts 51 linking ... And form non-circular shape.Thus, said nut 46 is inserted through engages with clad lining 32 and stoped the brake piston 38 of the rotation in clutch release slave cylinder hole 34, thereby the front portion of the engagement portion 46b of nut 46 and brake piston 38 snaps into and can not rotate relatively.

Said each teat 49 of the periphery of engagement portion 46b in said nut 46 ... Each other and be formed with the path 52 of the circulation that allows brake fluid in brake piston 38 anterior between week respectively ..., on the front-end face of the butt teat 46c of the front end of said nut 46, be provided with from said tapped hole 48 and extend and be configured to criss-cross 4 path grooves 53 to the radial direction outside ...

In the lump with reference to Fig. 4; Sliding bearing 54 and pad 55 between the next door 36 of the lip part 45b of said thread spindle 45 and said brake calipers main body 26, have been clamped; This pad 55 be installed in said next door 36 as prevention and link the O-ring seals 47 between the axial region 45a disengaging pressing member and bring into play function and be clipped between said sliding bearing 54 and the next door 36, sliding bearing 54 and pad 55 form the ring-type of flat board.

Said lip part 45b with 36 opposed in said next door on be formed with the base portion periphery of utilizing said binding axial region 45a stipulate in the chimeric recess 56 of ring-type in week, said sliding bearing 54 is chimeric with chimeric recess 56.And the interior week of said chimeric recess 56 links to each other with the base portion periphery of said binding axial region 45a via flexure plane 57, and the internal diameter of said sliding bearing 54 is set the base portion external diameter greater than said binding axial region 45a for, in order to avoid come in contact with said flexure plane 57.

In this thread mechanism 24; When the power from motor 22A is slowed down by retarder 23A; And when thread spindle 45 has been transmitted the power to the rotation of one of which direction, under the state that the rotation of brake piston 38 and nut 46 is prevented from, the effect and the reaction of sliding and producing to axial the place ahead through brake piston 38; And disc rotor 25A by

friction pad

27,28 from both sides cramping, obtain braking force thus.And through making said thread spindle 45 to the rotation of its other direction, and brake piston 38 is slided to axial rearward direction, thus the brake off state.

Pay close attention to Fig. 4; The electric case 83 of said motor 22A is installed on the housing section 26a of said brake calipers main body 26 to close said mode of accommodating the opening end of recess 35; In the gear-box 60A that constitutes by said electric case 83 and said brake calipers main body 26, be formed with reduction chamber 59; This reduction chamber 59 forms a part at least through accommodating recess 35, in this reduction chamber 59, contains said retarder 23A.

Said retarder 23A is provided with first planetary gears 61 and the second planetary gears 62A between the binding axial region 45a of the thread spindle 45 of the motor reel 95 of motor 22A and said thread mechanism 24.

Again in the lump with reference to Fig. 5; First planetary gears 61 possesses first sun gear 63 that is arranged on the said motor reel 95, be fixed on internal gear 64 on the said gear-box 60A, will with a plurality of for example three first planetary pinions 65 of this

internal gear

64 and 63 engagements of first sun gear ... Supporting for freely first planetary wheel carrier, 66, the second planetary gears 62A of rotation possess the interior week engagement of periphery and first planetary wheel carrier 66 secondary sun wheel 67, with the shared said internal gear 64 of first planetary gears 61, a plurality of for example three second planetary pinions 68 that will mesh with this internal gear 64 and secondary sun wheel 67 ... Supporting is the output link 70 of the chimeric dull and stereotyped ring-type of the interior Zhou Jinhang sawtooth of the rotation second planetary wheel carrier 69A, periphery and the second planetary wheel carrier 69A freely.

Shared said internal gear 64 forms and has the cylindric of the external diameter slightly littler than said internal diameter of accommodating recess 35 and be inserted in the said reduction chamber 59 in first and second

planetary gears

61,62A; This internal gear 64 and the said said next door 36 of accommodating the inner end wall of recess 35 of end said motor 22A opposition side and the formation in the said brake calipers main body 26 carry out concavo-convexly engaging, and limit the rotation around axis of this internal gear 64.For this concavo-convex engaging; In this mode of execution; Engage slit 71 for example being respectively equipped with on three positions to what said next door 36 sides were opened wide with circumferential a plurality of positions of the end of the said internal gear 64 of said motor 22A opposition side ..., be arranged at said next door 36 and a plurality of for example three engagement pins 72 of extending with the parallel axes of internal gear 64 ground ... Be inserted into said engaging slit 71 respectively ... In.And; Said each engagement pin 72 ... Through an end being embedded into the pin support holes 73 that the end is arranged that on said next door 36, is provided with ... In and be arranged on the said next door 36 36 outstanding each engagement pin 72 from the next door ... The other end be inserted into said engaging slit 71 ... In.

And; Can know from Fig. 6; Width d along the circumferential said engaging slit 71 of internal gear 64 sets greatlyyer slightly than the D outer diameter of said engagement pin 72, so that between internal gear 64 and engagement pin 72, form gap 74, and thus; In the confined scope till said internal gear 64 and the inner peripheral surface butt of accommodating recess 35, allow the displacement of the said internal gear 64 in the plane with the orthogonal axe of retarder 23A.

First planetary wheel carrier 66 forms dull and stereotyped ring-type; The interior week engagement of half periphery of shape of cross section said motor 22A side of identical secondary sun wheel 67 on axial whole length and first planetary wheel carrier 66, secondary sun wheel 67 is with 66 rotations of first planetary wheel carrier.

In this first planetary wheel carrier 66; First rest pin 75 with axis parallel with first planetary wheel carrier 66 ... An end for example through be pressed on the imaginary circle that the axis that is fixed on this first planetary wheel carrier 66 is the center along the equally spaced a plurality of positions of circumferentially spaced for example on three positions, each first rest pin 75 ... The other end pass and be separately positioned on first planetary pinion 65 ... On first support holes 76 ...

And; Constitute the 88b of plectane portion and first planetary pinion 65 of the lid member 88 in the said electric case 83 of a part of said gear-box 60A ... Opposed, and make said lid member 88 the 88b of plectane portion a part to the opposition side of retarder 23A hollowly the annular recessed portion 91 that forms of bending forming with said each first rest pin 75 ... The opposed mode in the other end be formed at the 88b of plectane portion of said lid member 88.

Second planetary pinion 68 ... Mesh with half periphery said motor 22A opposition side with said secondary sun wheel 67; Second rest pin 77 ... An end through be pressed into etc. be fixed on the second planetary wheel carrier 69A that forms dull and stereotyped ring-type along the equally spaced a plurality of positions of circumferentially spaced for example on three positions, second rest pin 77 ... The other end be inserted into respectively at second planetary pinion 68 ... Second support holes 78 that is provided with of central part ... In.

The end of the retarder 23A side of coaxial with thread spindle 45 in the said thread mechanism 24 and the binding axial region 45a that links to each other integratedly is to said reduction chamber 59 outstanding entering, and the end of this binding axial region 45a directly is pressed into being pressed in the hole 79 in the central part setting of said output link 70.And the second planetary wheel carrier 69A of the second planetary gears 62A connects to and can not rotate relatively with said thread spindle 45 via output link 70, and the interior Zhou Jinhang sawtooth of the periphery of this output link 70 and the second planetary wheel carrier 69A is chimeric.

Yet; Under the state of reduction chamber 59 being opened in that said motor 22A is taken off from said brake calipers main body 26; Constitute the part of reduction chamber 59 and be arranged on the state that recess 35 becomes opening of accommodating on the brake calipers main body 26; Under this state, can said output link 70 be retained in and accommodate in the recess 35 and retarder 23A is decomposed, wherein be pressed into the binding axial region 45a that links to each other with thread spindle 45 one of thread mechanism 24 in this output link 70; As shown in Figure 7, the said output link 70 that stays forms can be with engaging as 12 jiaos of sleeves 80 of rotary manipulation with instrument.Promptly; The periphery of output link 70 with can dismounting and can not counterrotating mode and the interior Zhou Jinhang sawtooth of the second planetary wheel carrier 69A chimeric; Therefore, be formed on a plurality of tooth portion 81,81 on the periphery of output link 70 ... Form with can not counterrotating mode and the interior Zhou Kahe of said 12 jiaos of sleeves 80.

The electric case 83 of motor 22A portion within it forms motor room 84 and is installed on the housing section 26a of brake calipers main body 26, comprising: have the metal yoke portion 86 that forms the round-ended cylinder shape to the outstanding lip part 86a in the radial direction outside integratedly at open end; Peripheral part and said lip part 86a butt and the for example plastic brush carriage 87 of resin system that the opening end of said yoke portion 86 is closed; This brush carriage 87 is clipped in the metal lid member 88 between itself and the said yoke portion 86.

Form the collar 89 cylindraceous for example being embedded with through metal on three positions of the peripheral part of said brush carriage 87 along circumferentially spaced a plurality of positions at interval ..., pass the said collar 89 of said lip part 86a and said brush carriage 87 ... Bolt 90 ... Screw togather with the housing section 26a of brake calipers main body 26.That is, the electric case 83 of motor 22A is through bolt 90 ... And be fastened on the housing section 26a of said brake calipers main body 26 with removable mode.

Said lid member 88 forms through the bending forming of sheet metal; Have cartridge housing body 88a cylindraceous, the 88b of plectane portion that extends from the outside side of this cartridge housing body 88a integratedly, at right angles link to each other with the periphery of the 88b of this plectane portion and to the cylindrical part 88c of said retarder 23A side extension; A part that makes cylindrical part 88c is side-prominent and chimeric with said brush carriage 87 to retarder 23A from brush carriage 87, chimeric with the housing section 26a of said brake calipers main body 26 from the outstanding part of said brush carriage 87 among the cylindrical part 88c.

And; Be installed at electric case 83 under the state of housing section 26a of brake calipers main body 26; The opening end of accommodating recess 35 in the brake calipers main body 26 is closed by the said lid member 88 of a part that constitutes said electric case 83; Moving axially of internal gear 64 among the retarder 23A by the next door 36 of brake calipers main body 26 and the 88b of the plectane portion restriction of said lid member 88; Through carrying out circumferentially moving of the incompatible limiting rotation 64 of embossed card with the next door 36 of brake calipers main body 26, therefore utilize next door 36 and the 88b of plectane portion limit axial to move, thus internal gear 64 is fixed in gear-box 60A substantively.

In addition; The outside at the cylindrical part 88c of said lid member 88; Between the housing section 26a of brake calipers main body 26 and brush carriage 87, clamp than said accommodate recess 35 interior week big footpath the sealing component 92 of ring-type, between the lip part 86a of yoke portion 86 and brush carriage 87, clamp the sealing component 93 that is positioned at than the configuration position ring-type in the inner part of bolt 90.

The motor reel 95 of said motor 22A is to rotate freely by said electric case 83 supportings; One end of this motor reel 95 via ball bearing 96 by the supporting of the bearing housing 86b on the dead end central part that is arranged on said yoke portion 86 be rotation freely; And; The other end of motor reel 95 connects brush carriage 87 and lid member 88 with freely mode of rotation and outstandingly enters into reduction chamber 59, and periphery is provided with first sun gear 63 quarter reduction chamber 59 in and in the other end of motor reel 95.And, between cartridge housing body 88a that covers member 88 and motor reel 95, clamp the ball bearing 97 that has sealing, to prevent that lubricating grease is from the inflow of reduction chamber 59 to motor room 84.

Armature 99 with commutator 98 is set, in the part corresponding and at a plurality of magnets 100,100 that are fixed with in interior week of said yoke portion 86 with armature 99 in said motor room 84 and on said motor reel 95 ...

In the lump with reference to Fig. 8 and Fig. 9; Supply central hole 101 that the part of said commutator 98 inserts so that the mode that said motor reel 95 connects is arranged on the central part of brush carriage 87; At on the face of said motor room 84 sides and on two positions being spaced from each other the interval on every side at said central hole 101 of brush carriage 87; The mode of extending more longways with the radial direction along said commutator 98 is provided with chimeric maintenance tube 103,103 integratedly; This is chimeric to keep tube 103,103 will carry out that the brush 102,102 of sliding contact is chimeric to be become can slide each brush 102 along the radial direction of said commutator 98 with said commutator 98 ... By at itself and said chimeric maintenance tube 103 ... Between the spring (not shown) that is provided with of compression to a side application of force of carrying out sliding contact with commutator 98.

Said brush carriage 87 on the face of said motor room 84 sides and said central hole 101 around the equally spaced a plurality of position that is spaced from each other for example be provided with capacitor holding part 105 on three positions ..., from above-mentioned capacitor holding part 105 ... In the capacitor holding part 105 selected ... Upward, the approaching said brush holding part 103 in this mode of execution ... Two capacitor holding parts 105 ... On maintain the capacitor 104 that is used to reduce radio noise ...

With reference to Figure 10 and Figure 11, said capacitor holding part 105 has in the lump: supporting surface 106, and it forms along the plane with the orthogonal axe of said motor 22A, so that the mode of a butt of said capacitor 104 is formed at said brush carriage 87; A pair of hook portion 107,108; They are integrally formed in said brush carriage 87; And between they and said supporting surface 106, clip said capacitor 104, and the said capacitor 104 of said capacitor holding part 105 restrictions with the plane of the orthogonal axe of said motor 22A in move.

Said supporting surface 106 forms in the bottom surface of the recess 109 of the rectangular shape that is provided with on the face of said motor room 84 sides of said brush carriage 87, and roughly half part of the said one side side in the said capacitor 104 is inserted into said recess 109.Roughly half part through said capacitor 104 is to the insertion of this recess 109, limit said capacitor 104 with the plane of the orthogonal axe of motor 22A in move.

Said two hook portions 107,108 are in order to stop the disengaging of said capacitor 104 from said recess 109; Erect and be integrally formed in said brush carriage 87 from the opening end lateral margin of said recess 109, being used to make the nib 110,111 that rises of the mould separating that forms said hook portion 107,108 is said supporting surface 106 openings and be formed at said brush carriage 87 to the bottom surface of said recess 109.And; The direction of insertion 119 that one side's hook portion 107 is configured to insert to said recess 109 along capacitor 104 and erecting at intermediate portion one side of the said recess 109 opening end lateral margin from this recess 109, the opposing party's hook portion 108 are configured to erect at the opening end lateral margin along the front end opposite side of the said recess 109 of said direction of insertion 119 from this recess 109.

In addition; The pair of terminal 104a, the 104b that extend from said capacitor 104 are configured in a pair of groove 112,113; This a pair of groove 112,113 is formed at said brush carriage 87 with the opposition side in a side that disposes said hook portion 108 with the mode that an end links to each other with said recess 109; Be arranged at the guide surface 114a that is formed with inclination on the wall 114 of said brush carriage 87 in that said groove 112,113 is separated, this guide surface 114a said capacitor 104 when said recess 109 inserts to these capacitor 104 channeling conducts.

The other end of said two grooves 112,113 links to each other with window 115,116; This window 115,116 is striden between the two sides of said brush carriage 87 and is arranged at this brush carriage 87; Towards the mode of said window 115,116 bus 117,118 is embedded in brush carriage 87 with a part, the terminal 104a of said capacitor 104,104b towards the part of said window 115,116 through soldering etc. and be electrically connected with said bus 117,118.

Yet, as shown in Figure 4, the motor room 84 that in the electric case 83 of motor 22A, forms and accommodate between the reduction chamber 59 of retarder 23A and dispose insulated space 121.And; On brush carriage 87 and faces motor room's 84 opposition sides, be provided with insulated space with recess 122; This brush carriage 87 constitutes the part of said electric case 83 and is clipped between motor room 84 and the reduction chamber 59 being anchored on brake calipers main body 26 on every side of the opening end of accommodating recess 35; Form said insulated space 121 through this insulated space with recess 122 and lid member 88, this lid member 88 is clipped in brush carriage 87 between itself and the yoke portion 86.

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

This access 123 comprises: is provided with on circumferential a plurality of positions of 88b of plectane portion in the lid member 88 of a part that constitutes said electric case 83 and the portion that is connected with of cylindrical part 88c, and a plurality of first intercommunicating pores 124 that are communicated with said reduction chamber 59 Be formed between the said plectane 88b of portion and the brush carriage 87 of said lid member 88 and with first intercommunicating pore 124 ... The annulus 125 that is communicated with; One end is communicated with this annulus 125 and is arranged on second intercommunicating pore 126 on the brush carriage 87 With second intercommunicating pore 126 ... And link between the said motor room 84 and be formed on the annular spaces 127 between the open end of said brush carriage 87 and yoke portion 86.

On said brush carriage 87, be provided with cylindrical part 87a integratedly; This cylindrical part 87a is configured in the chimeric maintenance tube 103 along the radial direction of yoke portion 86 ... The outside and with the open end of yoke portion 86 in week near opposed; In the open end of yoke portion 86, be formed with the said annular spaces 127 of a part that constitutes said access 123 between the periphery of week and cylindrical part 87a, a plurality of for example two second intercommunicating pores 126 ... With with annular spaces 127 and said annulus 125 linearly the mode of shape ground binding be arranged at said brush carriage 87.

In addition, outstanding and be arranged at said brush carriage 87 integratedly to the Coupler portion outside side of 87b of motor 22A power supply usefulness, via in the 87b of this Coupler portion and with being arranged at brush carriage 87 with the external communications roads 128 of external communications in the said motor room 84.

This external communications road 128 comprises: in the part corresponding with the said Coupler 87b of portion and in the inboard of said cylindrical part 87a, an end is arranged at the third connecting hole 129 of brush carriage 87 to motor room's 84 openings; The 4th intercommunicating pore 130 that extends of shape with linking in the other end in third connecting hole 129 and the 87b of Coupler portion and linearly.

Next; This embodiment's 1 effect is described; Supply the chimeric sliding freely clutch release slave cylinder hole 34 of brake piston 38 and be arranged on the brake calipers main body 26 of disk type braker 21A with the mode that accompanies next door 36 each other and open wide to opposition side each other with these clutch release slave cylinder hole 34 coaxial recesses 35 of accommodating; Thread spindle 45 is housed in the output link 70 of accommodating the retarder 23A in the recess 35 with a part and can not rotates relatively and link to each other coaxially; And thread spindle 45 connects next door 36 with rotation mode freely; Thread mechanism 24 with this thread spindle 45 is arranged between retarder 23A and the brake piston 38, converts the rotation of this thread spindle 45 the axial advance and retreat action of brake piston 38 to, is installed on brake calipers main body 26 to the motor 22A of retarder 23A input rotating power; Lip part 45b is arranged at thread spindle 45 integratedly and is opposed with next door 36 in clutch release slave cylinder hole 34; Between lip part 45b and next door 36, clamp the sliding bearing 54 that forms dull and stereotyped ring-type, lip part 45b with 36 opposed in next door on be formed with chimeric recess 56, said sliding bearing 54 is chimeric with chimeric recess 56.Therefore; In order to make assembling can in advance sliding bearing 54 be installed on lip part 45b easily; And can must be shorter, thereby can help the axial length of electrical braking device to shorten with the distance setting between the next door 36 of the lip part 45b of thread spindle 45 and brake calipers main body 26.

In addition; Retarder 23A possesses the output link 70 coaxial with said thread spindle 45; The end of thread spindle 45 one and the binding axial region 45a that has coaxially is coaxial and directly be pressed into to said output link 70; Therefore can prevent the axle offset of thread spindle 45 with respect to output link 70, need not peripheral shape that end periphery with thread spindle 45 promptly links axial region 45a, to become cross section non-circular, therefore can reduce machining period.

In addition; Retarder 23A possesses output link 70 and centers on the second planetary wheel carrier 69A of this output link 70 coaxially; And the interior Zhou Jinhang sawtooth of the periphery of output link 70 and the second planetary wheel carrier 69A is chimeric; Even therefore the axis of thread spindle 45 has inclination slightly with respect to output link 70, also can carry out the self-aligning of the second planetary wheel carrier 69A, thus the spin stabilization of the constituting component of retarder 23A.

Wherein, Retarder 23A is provided with the two-stage planet formula retarder that first and second

planetary gears

61,62A form between the thread spindle 45 of the motor reel 95 of motor 22A and said thread mechanism 24; And be housed in the gear-box 60A; And first planetary gears 61 possesses first sun gear 63 that is arranged on the said motor reel 95, is fixed on internal gear 64 on the said gear-box 60A, will with a plurality of first planetary pinions 65 of this

internal gear

64 and 63 engagements of first sun gear ... Supporting for freely first planetary wheel carrier, 66, the second planetary gears 62A of rotation possess the interior week engagement of periphery and first planetary wheel carrier 66 secondary sun wheel 67, with the shared internal gear 64 of first planetary gears 61, a plurality of second planetary pinions 68 that will mesh with this internal gear 64 and secondary sun wheel 67 ... Supporting is the rotation second planetary wheel carrier 69A, said output link 70 freely.

According to this retarder 23A; Because shared internal gear 64 is fixed in gear-box 60A in first and second

planetary gears

61,62A; Therefore need not between internal gear 64 and gear-box 60A, to clamp bearing components, correspondingly can realize the minimizing of components number and the miniaturization of gear-box 60A.And; Because the periphery of the interior week of first planetary wheel carrier 66 of first planetary gears 61 and the secondary sun wheel 67 of second planetary gears 62A engagement; Therefore the required length that is pressed in the time of need not guaranteeing that secondary sun wheel 67 is pressed into first planetary wheel carrier 66; Not only can avoid the axial maximization of the retarder 23A of two-stage planet formula; And need not be pressed into operation and assembling operation becomes easily, in addition, the self-aligning effect that the engagement through the secondary sun wheel 67 and first planetary wheel carrier 66 produces can make spin stabilization.In addition, the peripheral shape of secondary sun wheel 67 is to the mate of first planetary wheel carrier 66 with to second planetary pinion 68 ... Mate on identical, thereby can easily carry out the processing of secondary sun wheel 67.

In addition; Accommodate retarder 23A and be formed between the electric case 83 and brake calipers main body 26 of motor 22A by accommodating the reduction chamber 59 that recess 35 constitutes a part; Wherein, The electric case 83 of motor 22A is installed on the said brake calipers main body 26 with the said mode of accommodating recess 35 that is provided with on the brake calipers main body 26 that is closed in disk type braker 21A; Said brake calipers main body 26 constitutes gear-box 60A with this electric case 83; Internal gear 64 stops axially movable mode to be inserted in the reduction chamber 59 with the 88b of plectane portion and the brake calipers main body 26 of the lid member 88 of the part through constituting said electric case 83; And internal gear 64 and end said motor 22A opposition side with limit this internal gear 64 carry out concavo-convexly engaging around the mode of the rotation of axis and brake calipers main body 26, therefore, can internal gear 64 shared in first and second

planetary gears

61,62A be fixed on substantively on the brake calipers main body 26 of a part that constitutes gear-box 60A.

And; On circumferential a plurality of positions of internal gear 64 and end said motor 22A opposition side, be provided with and engage slit 71 ... To these engaging slits 71 ... In the engagement pin 72 that inserts respectively ... Be arranged on the next door 36 of brake calipers main body 26; Therefore can reduce and be used for internal gear 64 is fixed on the components number on the brake calipers main body 26 substantively; And only through internal gear 64 is inserted just with engagement pin 72 to reduction chamber 59 ... Insert engaging slit 71 ..., so the assembling of internal gear 64 becomes easy.

In addition; Internal gear 64 along circumferential said engaging slit 71 ... Width d and said engagement pin 72 ... D outer diameter set for the plane of the orthogonal axe of retarder 23A in allow said internal gear 64 at confined scope intrinsic displacement; Therefore internal gear 64 with the axle plane orthogonal in can move and engage slit 71 ... With engagement pin 72 ... Between the gap 74 that produces ... Amount; Thereby can absorb the axle offset of first and second

planetary gears

61,62A, can realize the transmission of rotating power smoothly among the retarder 23A.

In addition; Between the brush carriage 87 of a part that constitutes said electric case 83 and brake calipers main body 26, clamp than accommodate recess 35 interior week big footpath the sealing component 92 of ring-type, therefore utilize minimal sealing component 92 can prevent that sealing etc. reaches the immersion in the electric case 83 to reduction chamber 59 in.

In addition; In first planetary gears 61; A plurality of first rest pins 75 ... An end be fixed in first planetary wheel carrier 66; First rest pin 75 ... The other end pass and be arranged on first planetary pinion 65 ... On first support holes 76 ... But since with each first rest pin 75 ... The opposed annular recessed portion 91 in the other end be formed on gear-box 60A with first planetary pinion 65 ... On the opposed wall; In this embodiment 1, being formed on a part that constitutes the electric case 83 of gear-box 60A with brake calipers main body 26 promptly covers on the plat part 88b of member 88; Therefore, can prevent because of first planetary wheel carrier 66 with respect to first planetary pinion 65 ... Axially relatively move and from first planetary pinion 65 ... The first outstanding rest pin 75 ... The internal surface of the other end and gear-box 60A situation about coming in contact, and simultaneously can be with first rest pin 75 ... Length setting must be longer; Thus, can increase first rest pin 75 ... To first planetary pinion 65 ... The insertion amount and guarantee first planetary pinion 65 ... Rotational stabilization.

In addition; The recess 35 of accommodating that is arranged on the brake calipers main body 26 is closed when brake calipers main body 26 is installed and constitutes the part of reduction chamber 59 at motor 22A; Be opened when brake calipers main body 26 is taken off at motor 22A; And retarder 23A has the output link 70 that can supply 80 engagings of 12 jiaos of sleeves and be fixed in thread spindle 45; And when reduction chamber 59 is opened wide, can output link 70 be retained in this accommodates and decomposes in the recess 35 and make output link 70 be contained in reduction chamber 59; Therefore under the state that motor 22A is taken off and the major part of retarder 23A is taken off, 12 jiaos of sleeves 80 are engaged with output link 70 and carry out rotary manipulation, can remove the parking braking state thus; Can just manually-operable power not passed to the thread spindle 45 of thread mechanism 24, thereby can remove the parking braking state with smaller manually-operable amount via retarder 23A.

On the resinous brush carriage 87 that motor 22A possesses, be provided with being used to reduce the capacitor 104 of radio noise ... The capacitor holding part 105 that keeps ...Therefore; Through capacitor holding part 105 ... Keep capacitor 104; Suppression capacitor 104 ... Situation about trembleing because of vibration, thus capacitor 104 can be prevented ... Electrical connection be disengaged or capacitor 104 ... Terminal 104a ..., 104b ... The situation of bending.And; Owing to can utilize capacitor holding part 105 ... Keep capacitor 104 ... Therefore at capacitor 104 ... Terminal 104a ..., 104b ... Electrical connection the time need not push capacitor 104 ... Thereby can improve assembling operation property, with capacitor 104 ... Do not need binder etc. when remaining in brush carriage 87, thereby can realize that cost reduces.

And capacitor holding part 105 has: supporting surface 106, and it forms along the plane with the orthogonal axe of said motor 22A, so that the mode of a butt of said capacitor 104 is formed at brush carriage 87; A pair of hook portion 107,108; They are integrally formed in brush carriage 87; And between they and said supporting surface 106, clip said capacitor 104; And said capacitor holding part 105 for the said capacitor 104 of restriction with the plane of the orthogonal axe of said motor 22A in the simple structure that moves, thereby can be through simple structure with capacitor 104 ... Remain in brush carriage 87.

In addition; The motor room 84 that in the electric case 83 of motor 22A, forms and at least a portion are formed at brake calipers main body 26 and accommodate between the reduction chamber 59 of retarder 23A; Dispose insulated space 121; Therefore can suppress the heat transmission to retarder 23A side from motor 22A, be synthetic resin system even constitute the parts of retarder 23A, also can suppress its thermal distortion and reduction in strength.

In addition; Brush carriage 87 constitutes the part of electric case 83 and is clipped between said motor room 84 and the said reduction chamber 59 being anchored on brake calipers main body 26 on every side of the opening end of accommodating recess 35; On this brush carriage 87, be provided be used to form said insulated space 121 insulated space with recess 122; Therefore can form insulated space 121 and also realize the lightweight of brush carriage 87 and electric case 83 simultaneously, and can cut down through material and realize that further cost descends.

In addition; Clamp the ball bearing 97 of band sealing between the lid member 88 of the part of the formation electric case 83 in motor 22A and the motor reel 95; This ball bearing 97 is used to prevent that lubricating grease is from the inflow of reduction chamber 59 to motor room 84; But because the access 123 that between the peripheral part of electric case 83 is formed with reduction chamber 59 and motor room 84, links; Therefore between reduction chamber 59 and motor room 84, can not produce pressure difference; Thereby need near the ball bearing 97 of the band sealed department that motor reel 95 and lid clamp between the member 88, not improve the processing of sealed precision or append other sealed member, only form the simple structure of having avoided cost to rise of access 123, just can prevent the inflow of lubricating grease to motor room 84 through peripheral part at electric case 83.And, therefore can prevent the situation that lubricating grease flows into to motor room 84 via access 123 because access 123 is a labyrinth-like.

In addition; Chimeric maintenance tube 103 ... Be arranged at brush carriage 87 towards motor room 84; This chimeric maintenance tube 103 ... The brush 102 that will carry out sliding contact with the commutator 98 that is arranged on the motor reel 95 ... Be held in slip freely; On brush carriage 87, be provided with cylindrical part 87a integratedly; This cylindrical part 87a is configured in the chimeric maintenance tube 103 along the radial direction of yoke portion 86 in the electric case 83 ... The outside and with the open end of yoke portion 86 in week near opposed; In the open end of yoke portion 86, be formed with the annular spaces 127 of a part that constitutes access 123 between the periphery of week and cylindrical part 87a, therefore, even lubricating grease is just in case flow into access 123; Lubricating grease can not arrive brush 102 yet ... The sliding contacting part to commutator 98 sliding contacts, thereby brush 102 ... The sliding contacting part to commutator 98 sliding contacts can not receive the influence that lubricating grease produces.

And; Outstanding and be arranged at brush carriage 87 integratedly to the Coupler portion outside side of 87b of motor 22A power supply usefulness; Via in the 87b of this Coupler portion and with being arranged at brush carriage 87 with the external communications roads 128 of external communications in the said motor room 84, therefore can make motor room 84 and reduction chamber 59 and outer air pressure is that identical pressure prevents the mobile of lubricating grease.And, on the 87b of Coupler portion, be connected with aerial lug, the situation that water or dust etc. are invaded in motor room 84 from external communications road 128 can not take place therefore.

[embodiment 2]

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

At first, in Figure 14 and Figure 15, this vehicle possesses with electrical braking device: disk type braker 21B; Be installed in the positive and negative rotation motor 22B freely on the brake calipers main body 26 of this disk type braker 21B; Retarder 23B with this motor 22B binding; To convert axial advance and retreat motion to and be arranged on the brake piston 38 of disk type braker 21B and the thread mechanism 24 between the said retarder 23B from rotatablely moving of retarder 23B output.

Disk type braker 21B possesses: disc rotor 25B; With the bi-side arranged opposite of this disc rotor 25B, and be configured in a pair of

friction pad

27,28 between disc rotor 25B and the brake calipers main body 26.

The electric case 137 of said motor 22B will be accommodated the opening end of recess 35 and closed and be installed on the housing section 26a of brake calipers main body 26; In the gear-box 60B that constitutes by said electric case 137 and said brake calipers main body 26, be formed with reduction chamber 133; This reduction chamber 133 forms a part at least by accommodating recess 35, in this reduction chamber 133, contains said retarder 23B.

The thread spindle 45 of said thread mechanism 24 is same with embodiment 1; Possess next door 36 opposed lip part 45b integratedly with brake calipers main body 26; The sliding bearing 54 of dull and stereotyped ring-type is chimeric with the chimeric recess 56 that is arranged on this lip part 45b, between this sliding bearing 54 and next door 36, has clamped pad 55.

Said retarder 23B is through being provided with first planetary gears 61 and the second planetary gears 62B forms between the binding axial region 45a of the motor reel 95 of motor 22B and the thread spindle 45 in the said thread mechanism 24.

In the lump with reference to Figure 16 and Figure 17; First planetary gears 61 possesses first sun gear 63 that is arranged on the said motor reel 95, be fixed on internal gear 64 on the said gear-box 60B, will with a plurality of for example three first planetary pinions 65 of this

internal gear

64 and 63 engagements of first sun gear ... Supporting for freely first planetary wheel carrier, 66, the second planetary gears 62B of rotation possess the interior week engagement of periphery and first planetary wheel carrier 66 secondary sun wheel 67, with the shared said internal gear 64 of first planetary gears 61, a plurality of for example three second planetary pinions 68 that will mesh with this internal gear 64 and secondary sun wheel 67 ... Supporting is the rotation second planetary wheel carrier 69B freely.

Said internal gear 64 shared in first and second

planetary gears

61,62B is for being fixed in gear-box 60B with embodiment's 1 same structure.Promptly; Have a plurality of slits 71 that engage in end with said motor 22B opposition side ... The next door 36 of lid member 141, brake calipers main body 26 of a part of the electric case 137 of internal gear 64 through constituting said motor 22B come limit axial to move to be inserted into said reduction chamber 133; Internal gear 64 and end motor 22B opposition side are through being arranged on the engagement pin 72 on the next door 36 ... Be inserted into said engaging slit 71 ... In, and carry out concavo-convexly engaging with the next door 36 of brake calipers main body 26.

And; Be installed at electric case 137 under the state of housing section 26a of brake calipers main body 26; The opening end of accommodating recess 35 in the brake calipers main body 26 is closed by the said lid member 141 of a part that constitutes said electric case 137; The internal gear 64 of retarder 23B through with the next door 36 of brake calipers main body 26 carry out concavo-convex engage be limited circumferential moving, therefore through utilize next door 36 and lid member 141 to come limit axial to move and be fixed in gear-box 60B substantively.

In first planetary gears 61, an end is fixed on first rest pin 75 on first planetary wheel carrier 66 ... The other end pass and be separately positioned on first planetary pinion 65 ... On first support holes 76 ...And, constitute the lid member 141 and first planetary pinion 65 in the said electric case 137 of a part of said gear-box 60B ... Opposed, and annular recessed portion 134 with said each first rest pin 75 ... The opposed mode in the other end be formed at this lid member 141.

Second planetary pinion 68 ... Mesh with half periphery said motor 22B opposition side with said secondary sun wheel 67; Second rest pin 77 ... An end through be pressed into etc. be fixed on the second planetary wheel carrier 69B that forms dull and stereotyped ring-type along the equally spaced a plurality of positions of circumferentially spaced for example on three positions, second rest pin 77 ... The other end be inserted into respectively at second planetary pinion 68 ... Second support holes 78 that is provided with of central part ... In.

The end of the retarder 23B side of coaxial with thread spindle 45 in the said thread mechanism 24 and the binding axial region 45a that links to each other integratedly is to said reduction chamber 133 outstanding entering, and the end quilt of this bindings axial region 45a directly and coaxially is pressed into being pressed in the hole 135 in the central part setting of the second planetary wheel carrier 69B.

Yet; Under the state of reduction chamber 133 being opened in that said motor 22B is taken off from said brake calipers main body 26; Constitute at least a portion of reduction chamber 133 and be arranged on the state that recess 35 becomes opening of accommodating on the brake calipers main body 26; Under this state; Can the second planetary wheel carrier 69B be retained in and accommodate in the recess 35 and retarder 23B is decomposed, wherein be pressed into the binding axial region 45a that links to each other with thread spindle 45 one of thread mechanism 24 in this second planetary wheel carrier 69B, on the second planetary wheel carrier 69B that stays, be provided with and to engage rotary manipulation and form the non-circular a plurality of card complex holes 136 of cross section with instrument ...

The electric case 137 of motor 22B portion within it forms motor room 138 and is installed on the housing section 26a of brake calipers main body 26, and it comprises: have the metal yoke portion 139 that forms the round-ended cylinder shape to the outstanding lip part 139a in the radial direction outside integratedly at open end; Metal bearing bracket 140 in the configuration of the opening end of this yoke portion 139; The plastic lid member 141 that makes peripheral part and said lip part 139a butt and the opening end of said yoke portion 139 is closed.

Said bearing bracket 140 forms through the bending forming of sheet metal; The 140b of plectane portion that has cartridge housing body 140a cylindraceous and extend from the outside side of this cartridge housing body 140a, the fastening combination carried out with the interior perimembranous of opening end of said yoke portion 139 in a plurality of positions of the peripheral part of the 140b of plectane portion.

In the lump with reference to Figure 18; Said lid member 141 is formed by synthetic resin; Have integratedly can the mode that recess 35 closes of accommodating that be arranged on the brake calipers main body 26 being formed discoideus and is formed with recess 142 upwards having separated a plurality of positions at interval the week along its periphery ... Lid member principal part 141a and as to motor 22B power supply with and from the outside side of said lid member principal part 141a the outstanding 141b of Coupler portion; Between said lid member 141 and brake calipers main body 26, form reduction chamber 133 and said lid member 141 is clipped between said brake calipers main body 26 and the said lip part 139a, and pass through by a plurality of bolts 143 ... Carry out common fastening and said lip part 139a and said lid member 141 are anchored on said brake calipers main body 26.

And; On the outer circumferential face of said lid member principal part 141a, be formed with a plurality of lug boss 141c ... Be configured in said lug boss 141c respectively ... Between said recess 142 ... Said lug boss 141c ... In be embedded with and supply said bolt 143 ... The collar cylindraceous 144 that passes ..., at said lug boss 141c along the radial direction of said lid member principal part 141a ... Inner end be formed with and make said lug boss 141c ... The said recess 142 of both sides ... The weight reduction intercommunicating pore 145 that is interconnected ...

In addition; Be provided with insulated space with recess 147 on the face of the motor 22B side of the lid member principal part 141a on any face in the face of the face of the said motor 22B side of lid member principal part 141a and said retarder 23B side, in present embodiment 2; Insulated space through said lid member principal part 141a is with recess 147 with to cover this insulated space is configured in the opening end of yoke portion 139 with the mode of recess 147 metal bearing bracket 140; Form insulated space 146, this insulated space 146 is clipped between the motor room 138 and said reduction chamber 133 that forms in the said electric case 137.

In addition, the periphery at said lid member principal part 141a is provided with rib 148 integratedly ..., this rib 148 ... At said recess 142 ... Each disposes a plurality of.

The motor reel 95 of said motor 22B is to rotate freely by said electric case 137 supportings; One end of this motor reel 95 via ball bearing 96 by the supporting of the bearing housing 139b on the dead end central part that is arranged on said yoke portion 139 be rotation freely; And the other end of motor reel 95 connects bearing bracket 140 and covers member 141 and the outstanding reduction chamber 133 that enters into rotation mode freely; Periphery is carved and is provided with first sun gear 63 in reduction chamber 133 and in the other end of motor reel 95, between the cartridge housing body 140a of bearing bracket 140 and motor reel 95, clamps the ball bearing 97 that band seals.

Armature 99 with commutator 98 is set, in the part corresponding and at a plurality of magnets 100,100 that are fixed with in interior week of said yoke portion 139 with armature 99 in said motor room 138 and on said motor reel 95 ...

In addition, be supported with brush carriage 152 regularly, carry out sliding contact for the brush (not shown) that can slide with said commutator 98 by these brush carriage 152 supportings in the inner surface side of said bearing bracket 140.

In addition; Between the housing section 26a of brake calipers main body 26 and said lid member 141, clamp than said accommodate recess 35 interior week big footpath the sealing component 92 of ring-type, between the lip part 139a of yoke portion 139 and lid member 141, clamped 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; Same with embodiment 1; The lip part 45b of thread spindle 45 with 36 opposed in next door on be formed with chimeric recess 56, and the sliding bearing 54 of dull and stereotyped ring-type is chimeric with chimeric recess 56, therefore in order to make assembling can in advance sliding bearing 54 be installed on lip part 45b easily; And can must be shorter, thereby can help the axial length of electrical braking device to shorten with the distance setting between the next door 36 of the lip part 45b of thread spindle 45 and brake calipers main body 26.

In addition; Retarder 23B possesses the second planetary wheel carrier 69B coaxial with said thread spindle 45; The end of thread spindle 45 one and the binding axial region 45a that has coaxially is coaxial and directly be pressed into to the second planetary wheel carrier 69B; Therefore can prevent the axle offset of thread spindle 45, and need not peripheral shape that end periphery with thread spindle 45 promptly links axial region 45a, to become cross section non-circular, therefore can reduce machining period with respect to the second planetary wheel carrier 69B.

Retarder 23B is through the two-stage planet formula retarder that first and second

planetary gears

61,62B form is set between the thread spindle 45 of the motor reel 95 of motor 22B and said thread mechanism 24; And be housed in the gear-box 60B; First planetary gears 61 possesses first sun gear 63 that is arranged on the said motor reel 95, be fixed on internal gear 64 on the said gear-box 60B, will with a plurality of first planetary pinions 65 of this

internal gear

64 and 63 engagements of first sun gear ... Supporting for freely first planetary wheel carrier, 66, the second planetary gears 62B of rotation possess the interior week engagement of periphery and first planetary wheel carrier 66 secondary sun wheel 67, with the shared internal gear 64 of first planetary gears 61, a plurality of second planetary pinions 68 that will mesh with this internal gear 64 and secondary sun wheel 67 ... Supporting is the rotation second planetary wheel carrier 69B freely.

According to this retarder 23B; Because shared internal gear 64 is fixed in gear-box 60B in first and second

planetary gears

61,62A; Therefore need not between internal gear 64 and gear-box 60B, to clamp bearing components, correspondingly can realize the minimizing of components number and the miniaturization of gear-box 60B.And; Because the interior week of first planetary wheel carrier 66 of first planetary gears 61 and the engagement of the periphery of the secondary sun wheel 67 among the second planetary gears 62B; Therefore the required length that is pressed in the time of need not guaranteeing that secondary sun wheel 67 is pressed into first planetary wheel carrier 66; Not only can avoid the axial maximization of the retarder 23B of two-stage planet formula; And need not be pressed into operation and assembling operation becomes easily, in addition, the self-aligning effect that the engagement through the secondary sun wheel 67 and first planetary wheel carrier 66 produces can make spin stabilization.In addition, the peripheral shape of secondary sun wheel 67 is to the mate of first planetary wheel carrier 66 with to second planetary pinion 68 ... Mate on identical, thereby can carry out the processing of secondary sun wheel 67 easily.

The recess 35 of accommodating being arranged on the brake calipers main body 26 is closed and is installed between the electric case 137 and said brake calipers main body 26 of the motor 22B on the said brake calipers main body 26; Be formed with the reduction chamber 133 of accommodating retarder 23B; Internal gear 64 stops axially movable mode to be inserted in the reduction chamber 133 with the lid member 141 and the brake calipers main body 26 of the part through constituting said electric case 137; And internal gear 64 and end said motor 22B opposition side with limit this internal gear 64 carry out concavo-convexly engaging around the mode of the rotation of axis and brake calipers main body 26; Therefore, can internal gear 64 shared in first and second

planetary gears

61,62B be fixed on the brake calipers main body 26 substantively.

And; On circumferential a plurality of positions of internal gear 64 and end said motor 22B opposition side, be provided with and engage slit 71 ... To these engaging slits 71 ... The engagement pin 72 that inserts respectively ... Be arranged on the next door 36 of brake calipers main body 26; Therefore can reduce and be used for internal gear 64 is fixed on the components number on the brake calipers main body 26 substantively; And can be only through internal gear 64 is inserted just with engagement pin 72 to reduction chamber 59 ... Insert engaging slit 71 ..., so the assembling of internal gear 64 becomes easy.

In addition; Between the lid member 141 of a part that constitutes said electric case 137 and brake calipers main body 26, clamp than accommodate recess 35 interior week big footpath the sealing component 92 of ring-type, therefore can utilize minimal sealing component 92 anti-sealings etc. to reduction chamber 133 in, to reach the immersion in the electric case 137.

In addition; In first planetary gears 61; A plurality of first rest pins 75 ... An end be fixed in first planetary wheel carrier 66; First rest pin 75 ... The other end pass and be arranged on first planetary pinion 65 ... On first support holes 76 ... But since with each first rest pin 75 ... The opposed annular recessed portion 134 in the other end be formed on gear-box 60B with first planetary pinion 65 ... On the opposed wall; In this embodiment 2, be formed on the lid member 141 of a part that constitutes electric case 137, this electric case 137 constitutes gear-box 60B with brake calipers main body 26, therefore; Can prevent because of first planetary wheel carrier 66 with respect to first planetary pinion 65 ... Axially relatively move and from first planetary pinion 65 ... The first outstanding rest pin 75 ... The internal surface of the other end and gear-box 60B situation about coming in contact; And simultaneously can be with first rest pin 75 ... Length setting must be longer, thus, can increase first rest pin 75 ... To first planetary pinion 65 ... The insertion amount and guarantee first planetary pinion 65 ... Rotational stabilization.

In addition; The recess 35 of accommodating that is arranged on the brake calipers main body 26 is closed when brake calipers main body 26 is installed and constitutes the part of reduction chamber 133 at motor 22B; Be opened when brake calipers main body 26 is taken off at motor 22B; And retarder 23B has the second planetary wheel carrier 69B; This second planetary wheel carrier 69B is provided with and can supplies a plurality of card complex holes 136 of rotary manipulation with the instrument engaging ... And be fixed in thread spindle 45, and when reduction chamber 133 is opened wide, can the second planetary wheel carrier 69B be retained in this and accommodate and decompose in the recess 35 and make the second planetary wheel carrier 69B be contained in reduction chamber 133, therefore under the state that motor 22B is taken off and the major part of retarder 23B is taken off; Rotary manipulation is engaged with the second planetary wheel carrier 69B with instrument and be rotated operation; Can remove the parking braking state thus, and can be not manually-operable power be delivered to the thread spindle 45 of thread mechanism 24, therefore can remove the parking braking state with smaller manually-operable amount via retarder 23B.

In addition; The motor room 138 that in the electric case 137 of motor 22B, forms and at least a portion are formed at brake calipers main body 26 and accommodate between the reduction chamber 133 of retarder 23B; Dispose insulated space 146; Therefore can suppress the heat transmission to retarder 23B side from motor 22B, be synthetic resin system even constitute the parts of retarder 23B, also can suppress its thermal distortion and reduction in strength.

In addition; Lid member 141 constitutes the part of electric case 137 and is clipped between said motor room 138 and the said reduction chamber 133 being anchored on brake calipers main body 26 on every side of the opening end of accommodating recess 35; On this lid member 141, be provided be used to form said insulated space 146 insulated space with recess 147; Therefore can form the lightweight that member 141 and electric case 137 are covered in insulated space 146 and realization simultaneously, and can cut down through material and realize that further cost descends.

In addition; Lid member 141 is formed by synthetic resin; Have integratedly with can be arranged on the brake calipers main body 26 accommodate mode that recess 35 closes form discoideus lid member principal part 141a, as to motor 22B power supply with and from the outside side of said lid member principal part 141a the outstanding 141b of Coupler portion; Outer circumferential face at lid member principal part 141a is formed with a plurality of lug boss 141c ... Be configured in said lug boss 141c respectively ... Between recess 142 ... Said lug boss 141c ... In be embedded with and supply bolt 143 ... The collar cylindraceous 144 that passes ... At said lug boss 141c along the radial direction of said lid member principal part 141a ... Inner end be formed with and make said lug boss 141c ... The said recess 142 of both sides ... The weight reduction intercommunicating pore 145 that is interconnected ..., therefore can realize covering the lightweight of member 141 and the cost decline that material is cut down generation.And; Even enter into the recess 142 that becomes the top position when vehicle boarded from the water of outside ... Also can make water recess 142 side flow downwards via weight reduction intercommunicating pore 145; Thereby anti-sealing lodges in recess 142, the reason that the rust of the parts around can avoiding becoming produces, and can prevent that the durability of covering member 141 from descending.

And, be provided with rib 148 integratedly in the periphery of covering member principal part 141a ..., this rib 148 ... At said recess 142 ... Each disposes a plurality of, therefore, can prevent to form recess 142 ... The reduction in strength of the lid member 141 that causes.

More than, mode of execution of the present invention is illustrated, but the present invention is not defined as above-mentioned mode of execution, under the situation that does not break away from its purport, can carry out various design alterations.

Claims

1. a vehicle is used electrical braking device, and 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) said friction pad (27,28) is advanced and retreat with respect to said disc rotor (25A, 25B); Retarder (23A, 23B), its by first and second planetary gears (61,62A; 61,62B) constitute, and be arranged between said motor (22A, 22B) and the said running shaft (45),

Said vehicle is characterised in that with electrical braking device,

First planetary gears (61) possesses: the motor reel (95) at said motor (22A, 22B) is gone up first sun gear (63) that is provided with; Internal gear (64); To be rotation first planetary wheel carrier (66) freely with first planetary pinion (65) supporting of this internal gear (64) and first sun gear (63) engagement,

Second planetary gears (62A, 62B) possesses: with the secondary sun wheel (67) of first planetary wheel carrier (66) rotation; The said internal gear (64) shared with first planetary gears (61); To be to rotate freely with second planetary pinion (68) supporting of this internal gear (64) and secondary sun wheel (67) engagement, and second planetary wheel carrier (69A, 69B) coaxial with said running shaft (45) and that can not link with the relative rotation,

The electric case (83,137) of said motor (22A, 22B) is installed on this brake calipers main body (26) with the mode that between the brake calipers main body (26) of itself and said disk type braker (21A, 21B), forms the reduction chamber (59,133) of accommodating said retarder (23A, 23B); Said internal gear (64) to be stoping axially movable mode to be inserted in the said reduction chamber (59,133) by said electric case (83,137) and said brake calipers main body (26), said internal gear (64) and end said motor (22A, 22B) opposition side with limit this internal gear (64) carry out concavo-convexly engaging around the mode of the rotation of axis and said brake calipers main body (26).

2. vehicle according to claim 1 is used electrical braking device, it is characterized in that,

On circumferential a plurality of positions of said internal gear (64) and end said motor (22A, 22B) opposition side, be provided with and engage slit (71); Be arranged at said brake calipers main body (26) to these engagement pins (72) of inserting respectively of engaging slits (71), the external diameter along circumferential width and said engagement pin (72) of said internal gear (64) set for the plane of the orthogonal axe of said retarder (23A, 23B) in the said internal gear of permission (64) at confined scope intrinsic displacement.

3. vehicle according to claim 1 and 2 is used electrical braking device, it is characterized in that,

The recess (35) of accommodating of being closed by said electric case (83,137) is arranged at said brake calipers main body (26) with the mode of the part that constitutes said reduction chamber (59,133), between said electric case (83,137) and said brake calipers main body (26), clamp than said accommodate recess (35) interior week big footpath the sealing component (92) of ring-type.