JP2000278925A - Pump drive motor of vehicle antilock brake device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the pump drive motor of a vehicle antilock brake device whose magnets have improved assembly performance recycling performance and in which the magnets and brushes can be positioned with improved precision. SOLUTION: The pump drive motor of a vehicle antilock brake device has a stator with a yoke 16 and a plurality of magnet 16 attached to the inner wall of the yoke, a rotary shaft, a brush holder and a housing. The yoke is formed so as to protrude with a yoke wall integrally swollen inward and has a protruding stripe 17 extending in an axial direction. The two magnets have respective one side ends 16a attached to both the sides 17a of the protruding stripe 17 so as to face the yoke inner wall, and are pressed against the protruding stripe by a clip 18 elastically fitted between facing other side ends 16b to be attached to the yoke.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a motor for operating a pump of an antilock brake device for a vehicle.

[0002]

2. Description of the Related Art Today, from the viewpoint of safety, traveling vehicles include:
In order to prevent the wheels from locking and slipping on the road surface during braking and from losing the steering wheel operating performance, an anti-lock brake device for a vehicle (hereinafter referred to as a “vehicle anti-lock device” for controlling a braking torque so that the wheels are not locked by braking ABS device ”). This vehicle ABS device controls the braking torque so as to maintain the slip ratio of the wheels during braking in an appropriate range.
It is configured such that the maximum braking force can always be exerted even under conditions such as gravel roads where the vehicle easily slips and the steering performance of the wheels tends to deteriorate.

[0003] An example of a vehicle ABS device will be described. A hydraulic circuit formed between a brake master cylinder provided to be connected to a brake pedal for a vehicle and a wheel cylinder provided to be connected to a wheel brake. The brake fluid can be circulated inside. Further, an actuator is provided for controlling the hydraulic pressure by opening and closing normally open and normally closed solenoid valves provided in a hydraulic circuit from the brake master cylinder to the wheel cylinder. The operation of this actuator is controlled by an electronic control unit using a microcomputer. The running state of the vehicle is input to the electronic control unit from a wheel speed sensor or the like provided on each wheel.

The electronic control unit increases the braking pressure by increasing the hydraulic pressure applied from the brake master cylinder to the wheel cylinder to increase the braking torque to the actuator, so that the hydraulic pressure is not transmitted from the brake master cylinder to the wheel cylinder. Control mode by holding down the brake torque, or depressurizing mode to reduce the braking torque by temporarily storing the brake fluid in the reservoir (tank) from the wheel cylinder so that the wheels do not become locked. are doing. Of these, it is necessary to return the brake fluid stored in the reservoir to the brake master cylinder side when returning to the pressure reduction mode, and to return the reservoir to the initial empty state. Therefore, a pump is provided in the hydraulic circuit connected to the reservoir, and the pump is driven by the motor to return the brake fluid to the brake master cylinder side.

[0005] By the way, the design of a recent vehicle has been downsized,
There is an increasing demand for the reuse of vehicle parts to meet the ecological philosophy along with the weight reduction. Therefore, ABS for vehicles
A similar design concept is required for the device. In particular, there has been a demand for reusing as much as possible the components of the pump operating motor provided in the engine room among the ABS devices for vehicles. Conventionally,
For example, in the case of an inner rotor type motor, a plurality of permanent magnets (magnets) are provided on the inner wall surface of the yoke constituting the stator.
Was assembled. This magnet is usually fixed to the inner wall surface of the yoke using an adhesive, or attached and fixed by caulking with the yoke. Further, the magnet was magnetized to a required number of magnetic poles after being fixed to the yoke. In addition, considering the efficiency of the motor, it is necessary to fix the relationship between the magnet and the brush with high precision.However, in general, the yoke with the magnet and the brush holder that holds the brush are incompatible with the positioning accuracy of the dedicated assembly machine. Therefore it was assembled.

[0006]

A plurality of magnets to be assembled in the yoke require a special jig for positioning the magnets in the circumferential direction, so that the assembling operation is complicated, and furthermore, the magnet is bonded to the yoke. Since it was fixed by swaging, it was difficult to disassemble and reuse it. In addition, since the mutual positional relationship between the brush and the magnet of the pump operating motor affects the rotation of the rotor and thus the efficiency of the motor, positioning is extremely important, but positioning of the magnet is performed on the yoke side and the brush holder is used. Since the positioning is performed on the housing side before the housing is assembled to the yoke, there is also a problem that the mutual positioning accuracy between the brush and the magnet is reduced.

Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art, to improve the assemblability and recyclability of a magnet assembled in a yoke, and to improve the positioning accuracy between a magnet and a brush. An object of the present invention is to provide a motor for operating a pump of an anti-lock brake device for a vehicle.

[0008]

The present invention has the following configuration to achieve the above object. That is, a yoke, a stator having a plurality of magnets assembled to the inner wall of the yoke, one end of which is inserted into the device body of the anti-lock brake device for a vehicle and is rotatably supported, and the hydraulic pressure of the device body is A rotating shaft having an eccentric shaft portion for operating a pump provided in a circuit, a rotor and a commutator mounted on the rotating shaft, a brush holder for holding a brush capable of supplying power to the commutator from the apparatus main body side, and a yoke A motor for operating a pump of an anti-lock brake device for a vehicle, comprising a housing interposed between the yoke and the apparatus body side so as to cover the opening of the yoke and the yoke wall integrally expands inward. It has one or a plurality of stoppers formed to protrude and extend in the axial direction, and the plurality of magnets are arranged on the inner wall of the yoke with one ends of the magnets abutting against the stoppers from both sides. In, characterized in that it is assembled to the yoke is pressed against the stopper by the adjacent opposed elastically by an elastic member between the other end of the magnet. The yoke has a plurality of stoppers extending in the axial direction by integrally projecting the yoke wall inward and having a plurality of stoppers extending in the axial direction. The magnet is arranged, and the other end of each magnet is pressed against the stopper by an elastic member elastically mounted between the magnet and the opposite stopper, and is assembled to the yoke. Further, the stopper provided on the yoke also serves as a stopper for restricting the circumferential movement of the brush holder, and the stopper of the brush holder fitted to the stopper of the yoke regulates the axial movement of the magnet. It is characterized by the following.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments according to the present invention will be described below in detail with reference to the accompanying drawings. 1 is an explanatory view showing a fixed state of a magnet to a yoke, FIG. 2 is an enlarged explanatory view of a clip mounted between magnets, and FIG.
(A) and (b) are a front view and a right side view of a clip, FIG. 4 is an explanatory view of a ridge formed on a yoke, FIG. 5 is a sectional explanatory view of the ridge, and FIG. 6 is a ridge formed on a yoke. FIG. 7 is a sectional explanatory view of the clipping, FIG. 8 is an explanatory view showing a state where the yoke and the brush holder are assembled, and FIG.
Is an explanatory view of the yoke of FIG. 8 as viewed from the left side, FIG. 10 is a cross-sectional view showing the entire configuration of a pump operating motor of the antilock brake device for a vehicle, and FIG. 11 is a left side of the pump operating motor of FIG. FIG. 12, FIG. 12 is a right side view of the pump operating motor of FIG. 10, FIG. 13 is a partially broken explanatory view of the actuator, FIG. 14 is a partially broken explanatory view of the actuator of FIG. FIG. 15 is a configuration diagram schematically showing an antilock brake device for a vehicle, and FIG. 16 is an explanatory diagram showing a fixed state of a magnet to a yoke according to another example.

First, a schematic structure of an antilock brake device for a vehicle will be described with reference to FIG. Reference numeral 1 denotes an electronic control unit (ECU) that controls the operation of a hydraulic circuit that constitutes the actuator 2. M / C is a brake master cylinder that outputs brake fluid pressure from each cylinder chamber according to the amount of depression of a brake pedal (not shown).
It is connected to a hydraulic circuit in the actuator 2. Fl,
Rr, Rl, Fr are a front left wheel, a rear right wheel, a rear left wheel, and a front right wheel, and each wheel is provided with a wheel brake B _Fl , B _Rr , B _Rl , B _Fr. A hydraulic circuit of the actuator 2 is connected to a wheel cylinder (not shown) for operating each wheel brake.

The structure of the actuator 2 will be described.
Normally open type input valve I connected to each of _Fl and B _Rr cylinders
V (Fl), and an input valve IV (Rr), the wheel brake B _Rl, input valves IV (R connected to each cylinder of the B _Fr
l), an input valve IV (Fr) is provided. These four
Normally closed output valve OV for each of the two input valves
(Fl), output valve OV (Rr), output valve OV
(Rl) and the output valve OV (Fr) are connected in parallel. The output valves OV (Fl) and OV (R
r) is connected to a reservoir 3 for temporarily storing brake fluid, and the output valves OV (Rl) and OV (Fr) are connected to a reservoir 4 for temporarily storing brake fluid. The reservoirs 3, 4 are connected to the suction ports of the plunger pumps 5, 6, and the plunger pumps 5, 6 circulate the brake fluid from the reservoirs 3, 4 so as to return to the brake master cylinder M / C. Reference numeral 7 denotes a pump operating motor,
When the motor is rotationally driven, the plungers are reciprocated to operate the plunger pumps 5, 6.

The normally open input valve IV (Fl), input valve IV (Rr), input valve IV (R1), and input valve IV (Fr) are opened and closed by a solenoid valve driven by a solenoid. The opening and closing operation of each input valve is controlled by the electronic control unit 1. Further, a normally closed output valve OV (Fl) and an output valve OV (R
r), output valve OV (Rl), output valve OV (F
r) is opened and closed by a solenoid valve driven by a solenoid, and the opening and closing operation of each output valve is controlled by the electronic control unit 1. Check valves 8 _Fl , 8 _Rr , 8 _Rl , and 8 _Fr are provided for the _normally open input valve IV (Fl), input valve IV (Rr), input valve IV (Rl), and input valve IV (Fr). When the input to the brake master cylinder M / C is released, the brake fluid is _supplied from the corresponding wheel brakes B _Fl , B _Rr , B _Rl , B _Fr to the brake master cylinder M / C. Open to return.

Further, the electronic control unit 1 controls each wheel F
The traveling state of the vehicle is input from a wheel speed sensor (not shown) provided on each of R, Rr, Rl, and Fr. The electronic control unit 1 controls the actuator 2 according to the running state of the vehicle for each of the wheel brakes B _Fl , B _Rr , B _Rl , and B _Fr for each of the normally open input valves I
V (Fl), IV (Rr), IV (Rl), IV (F
r) and each normally closed output valve OV (F
1), OV (Rr), OV (Rl), OV (Fr) are closed to increase the hydraulic pressure applied to the wheel cylinder (not shown) from the brake master cylinder M / C to increase the braking torque. Pressure mode, each normally open input valve I
V (Fl), IV (Rr), IV (Rl), IV (F
r) and each normally closed output valve OV (Fl), OV
(Rr), OV (Rl), and OV (Fr) are closed to hold the braking torque by not transmitting the hydraulic pressure from the brake master cylinder M / C to the wheel cylinder (not shown). Normally open input valve IV (F
1), IV (Rr), IV (Rl) and IV (Fr) are closed, and the normally-closed output valves OV (Fl) and OV
(Rr), OV (Rl) and OV (Fr) are opened to temporarily store brake fluid in the reservoirs 3 and 4 from a wheel cylinder (not shown) so that the wheels are not locked. It is controlled by one of the commands in the pressure reduction mode for reducing the braking torque. When shifting to the pressure reduction mode, the electronic control unit 1 drives the pump operating motor 7 to operate the plunger pumps 5 and 6 to store the brake fluid temporarily stored in the reservoirs 3 and 4 in the brake master cylinder. It returns to the M / C side.

Next, the structure of the pump operating motor 7 will be described with reference to FIGS. First, the external configuration of the pump operating motor 7 will be described with reference to FIGS. 13 and 14. Reference numeral 9 denotes a block body that forms an apparatus main body to which the pump operating motor 7 is assembled, and is a metal body formed in a lump. Consisting of The block body 9 is provided with plunger pumps 5 and 6 (see FIG. 13) which are operated by a pump operating motor 7. Also, a normally open input valve IV (Fl), an input valve IV (Rr),
The input valve IV (Rl), the input valve IV (Fr), the normally closed output valve OV (Fl), and the output valve OV (R
r), output valve OV (Rl), output valve OV (F
A plurality of solenoids 10 for opening and closing r), an electronic control unit 1 for controlling the operation of the actuator 2, and the like are assembled (see FIG. 14). The block 9 has a connector 1 for taking power of the electronic control unit 1.
1 is provided (see FIG. 13). The pump operating motor 7 has a main body side end 13 which is one end of the rotating shaft 12 inserted into the block body 9 and a terminal 14 for supplying power to the pump operating motor 7 inserted into a connection terminal of the electronic control unit 1. And fixed (see FIG. 14).

Next, the configuration of the pump operating motor 7 will be described in more detail. As the pump operating motor 7, an inner rotor type motor is used. In FIG. 10, the structure of the stator of the motor will be described first. Fifteen
Is a yoke formed in a cup shape and forms an exterior of the motor. As a material of the yoke 15, for example, a metal material such as a deep drawing steel plate (SPCE) is preferably used. A plurality (two in this embodiment) of arc-shaped magnets 16 made of a magnetic material such as ferrite are assembled on the inner wall surface of the yoke 15 and magnetized to a required number of magnetic poles (four in this embodiment). ing. As shown in FIG. 11, a ridge 17 as a stopper is formed on the yoke 15 so as to protrude integrally with the inner wall side in the axial direction. Each magnet 16 has one end 16a in contact with both side surfaces 17a of the ridge 17, and a U-shaped clip 18 serving as an elastic member between the other end 16b.
, Each magnet 16 is mechanically firmly fitted.

Next, the structure of the rotor of the motor will be described. In FIG. 10, reference numeral 19 denotes a core fitted on the rotating shaft 12. The periphery of the core 19 is coated with an insulating material (insulating resin or the like) 20.
An armature winding (magnet wire) 21 is wound around the slot formed in 9.

A commutator 22 is a commutator.
It is fitted integrally with the rotating shaft 12 and energizes the armature winding 21 so as to urge the rotor in the rotational direction. Reference numeral 23 denotes a brush holder, which is a brush capable of supplying power to the commutator 22 on the rotor side from the block body 9 on the apparatus body side.
Hold. The brush 24 is constantly urged to be in sliding contact with the commutator 22. That is, a spring 25 is elastically mounted between the brush 24 and the inner wall of the upright fitting wall 23 a of the brush holder 23. The brush holder 23 fits the fitting upright wall 23 a into the opening 15 b of the yoke 15, and connects the flange 23 b to the step 15 c of the yoke 15.
, And the flange outer wall 23c is brought into contact with the inner wall of the fitting portion 26a of the housing 26 fitted over the opening of the yoke 15 and assembled. Housing 26
The yoke 1 is formed by covering the opening 15b of the yoke 15 and fitting the fitting portion 26a to the step portion rising wall 15d.
5 and the block body 9. Housing 26
As shown in FIG. 12, a shaft hole 26b through which the rotating shaft 12 is inserted and a plurality of holes 26c for reducing the weight are formed. Of these, one hole 26c is used as a hole through which the terminal 14 for electrically connecting to the electronic control unit 1 on the block body 9 side is inserted.

In FIG. 10, the rotating shaft 12 has a concave portion 12 which is open on the end face of the rotor side end 27 which is the other end.
a is formed. A projection 15a is formed integrally with the bottom 15e of the yoke 15 at the center of the shaft by pressing. The projection 15a protrudes into the recess 12a, and the end 15a of the rotating shaft 12 on the rotor side is formed by the projection 15a.
7 can be supported. The projections 15a and the ridges 17 of the yoke 15 are integrally formed by press working (drawing). A ball bearing 28 for a shaft end is press-fitted as a rolling bearing between the convex portion 15a of the yoke 15 and the concave portion 12a of the rotary shaft 12.

In FIG. 10, a supporting ball bearing 29 is press-fitted into the rotating shaft 12. The supporting ball bearing 29 is press-fitted to the rotating shaft 12 so as to be accommodated between the brush holder 23 and the housing 26. The supporting ball bearing 29 receives a radial load applied to the rotating shaft 12 by press-fitting and supporting the housing 26 covering the outer periphery of the block body 9. An eccentric shaft portion 12c is formed near the body-side end portion 13 of the rotating shaft 12. An operating ball bearing 30 is press-fitted into the eccentric shaft portion 12c. The operating ball bearing 30 reciprocates the pistons 5a, 6a of the plunger pumps 5, 6 in connection with the springs 5b, 6b (see FIG. 13). Further, a support shaft portion 12d is formed at the main body side end portion 13 of the rotating shaft 12. This support shaft 12
d is press-fitted into and supported by the main body-side ball bearing 31 provided on the block body 9 side.

To assemble the pump operating motor 7 configured as described above to the block body 9, the main body side end 13 of the rotating shaft 12 extending from the housing 26 of the pump operating motor 7 is attached to the block body 9. The outer periphery of the housing 26 is press-fitted into the main body-side bearing 31 and is assembled.

Next, the structure for fixing the magnet 16 to the yoke 15 will be described in detail with reference to FIGS.
In FIG. 1, two arc-shaped magnets 16 are fixed to the inner wall of the yoke 15 so as to face each other. One end 16a (right end side in FIG. 1) of these adjacent magnets 16 is in contact with both side surfaces 17a of the ridge 17 formed on the yoke 15. As shown in FIGS. 4 and 5, the ridges 17 are formed by pressing the yoke 15 toward the inner wall side by pressing to extend from the vicinity of the convex portion 15a to the vicinity of the opening 15b in the axial direction. One end 16a of each magnet 16 is in contact with both side surfaces 17a of the ridge 17, so that movement in the circumferential direction is restricted.

A clip 18 made of a U-shaped steel material is elastically mounted as an elastic member in a gap between the opposite ends 16b of the adjacent magnets 16 facing each other. The other end 16 b of each magnet 16 is pressed by the elastic force of the clip 18, and one end 16 a is
a. The configuration of the clip 18 will be described in detail with reference to FIGS. 2 and 3A and 3B. Note that the solid line in FIG. 3A indicates the state before the clip 18 is mounted, and the broken line indicates the state when the clip 18 is mounted. Clip 18
Is a pressing portion 18a standing on both sides so as to be elastically tiltable between a solid line position and a broken line position shown in FIG.
a and a connecting portion 18b attached along the bottom 15e of the yoke 15. This both-side pressing portion 1
8a, an upright end portion 18c that stands vertically from the upper end to the vicinity of the upper end, and a tapered portion 1 that is inclined so as to become narrower from the upright end portion 18c to the connecting portion 18b.
8d are respectively formed. Further, as shown in FIG. 3B, the length of the tapered portion 18d of the both-side pressing portion 18a is formed to be longer than the length of the upright end portion 18c. This is because the clip 18 is connected to the other end 1 of the magnet 16.
6b, the tapered portion 18d
This is because the contact surface is the pressing surface of the other end 16b of 6 so that the surface pressure is as large as possible. Note that the elastic member is not limited to the clip 18 made of a steel material, and various materials and forms can be applied as long as the member is elastic and can be positioned.

The clip 18 is connected to the other end 1 of the magnet 16.
When it is mounted between 6b, it is inserted while tilting so that the tapered portions 18d are parallel to each other as shown by the broken line in FIG. At this time, since the width between the upright ends 18c is smaller than that between the tapered portions 18d, the clip 18 can be easily grasped and inserted easily. Also, as shown in FIG.
8 is inserted into a gap position formed between an inner wall of the yoke 15 and a magnet tapered portion 16c formed on the outer peripheral side adjacent to the other end 16b of the magnet 16. 16b and magnet taper part 1
It is mounted with the edge portion 16d formed at the boundary with 6c as a guide.

As shown in FIGS. 6 and 7, the connecting portion 18b of the clip 18 mounted between the other ends 16b of the magnets 16 does not incline toward the inside of the bottom of the yoke 15 to cause a displacement. On the bottom 15e of the yoke 15, a clip positioning protrusion 15f is formed by pressing. Also, in FIG.
e, magnet positioning projections 15 that serve as positioning guides when each magnet 16 is mounted in the yoke 15.
g is protruded at a plurality of locations by press working.

In order to fix the magnets 16 to the yoke 15, each magnet 16 is inserted along the inner wall of the yoke 15, one end 16a is brought into contact with both end faces 17a of the ridge 17, and the magnet 16 is formed on the bottom 15e. Positioning protrusion 1
Align to 5 g. Then, the user grips the upright end portion 18c of the clip 18 and tilts and compresses the both-side pressing portions 18a as shown by the broken line in FIG.
The connecting portion 18b is inserted into the yoke 15 using the edge portion 16d as a guide between the connecting portions 18b and the clip positioning protrusions 15a.
It is positioned and mounted between f and the inner wall. When the upright end 18c of the clip 18 is released, the pressing portions 18a on both sides are expanded, and the magnet 16 is pressed by the tapered portion 18d.
Is pressed at each other end 16b. As a result, each magnet 16 is urged in the circumferential direction, and one end 16 a is
7 is pressed against both side surfaces 17a to restrict the movement in the circumferential direction, and is firmly mechanically fitted without causing any positional displacement in the radial direction.

Therefore, the plurality of magnets 16 can be moved by the elastic force of the clip 18 without using a dedicated jig.
Since it can be fixed to, the assemblability is improved. Further, the yoke 1 is formed by using the clip 18 which expands the magnet 16 by elastic force without using an adhesive and without caulking.
5, the magnets 16 can be easily attached and detached by releasing the bias by the clip 18, thereby improving the recyclability.

Next, the structure for positioning the yoke 15 and the brush 24 will be described with reference to FIGS. 8 and 9, a ridge 17 provided so as to swell toward the inner wall side of the yoke 15 is formed in the axial direction up to the vicinity of the opening 15b, and the ridge 17 moves the brush holder 23 in the circumferential direction. The stopper is also used to regulate the pressure. That is, a pair of locking projections 23e are provided in the axial direction on the upright wall end 23d where the fitting upright wall 23a of the brush holder 23 is formed. The spacing between the locking projections 23e has a clearance slightly larger than the width of the ridge 17, but is formed so as to be substantially the same. The brush holder 23 is
By engaging the pair of locking projections 23e with the ridge 17, movement in the circumferential direction is restricted. The locking projection 23e as a stopper of the brush holder 23 regulates the movement of the magnet 16 in the axial direction.

Brush 24 held by brush holder 23
Since the brush holder 23 and the yoke 15 are positioned with high precision, the brush 24 and the magnet 16 can be positioned with high precision by positioning the brush holder 23 and the yoke 15 with high precision. In this way, by using the ridge 17 for positioning the magnet 16 provided on the yoke 15 also for positioning the magnet 16 and the brush holder 23, the positioning accuracy between the brush 24 and the magnet 16 is also improved,
It can contribute to improvement of motor efficiency.

In the above embodiment, the ridge 1 is attached to the yoke 15.
7 has been formed in one place, and the description has been made using the quadrupole magnetized magnet 16 provided with two magnets 16. However, the present invention is not limited to this embodiment.
A plurality of places are provided, and the number of magnets 16 is also four or six.
And a larger number (even number) may be provided. Also,
Protrusions 17 may be formed in the yoke 15 at a plurality of locations, and the plurality of magnets 16 may be fixed using an elastic member such as a clip 18 without being limited to a divided form. Specifically, as shown in FIG. 16, the yoke 15 is
Protrusions 17 are formed at positions that are each swung by 0 °, and the three magnets 16 are arranged on the inner wall of the yoke with one ends 16a abutting on the protuberances 17. The other end 16b of each magnet 16 is opposed to the ridge 17
And the other end 16a
Are pressed against the ridges 17, and the magnets 16 are assembled to the yoke 15. In addition, each clip 1
Numerals 8 are tilted inward by the positioning projections 15f projecting from the bottom 15e of the yoke 15 so as not to be displaced. In FIG. 16, three magnets 16 are used.
However, the present invention is not limited to this, and in the case of this embodiment, regardless of whether the number of magnets 16 is an even number or an odd number, And the yoke 15 can be positioned and assembled, so that the degree of freedom of design is widened. As described above, it goes without saying that various modifications can be made without departing from the spirit of the invention.

[0030]

According to the first aspect of the present invention, the yoke has a single or a plurality of stoppers extending in the axial direction by integrally projecting the yoke wall inward and protruding. Each of the plurality of magnets is disposed on the inner wall of the yoke with one end thereof abutting against the stopper from both sides, and is pressed against the stopper by an elastic member elastically mounted between the opposite ends of the adjacent magnets. Since it is assembled to the yoke, multiple magnets can be fixed to the yoke by the elastic force of the elastic member without using a dedicated jig,
The assemblability is improved. Also, since a plurality of magnets are fixed to the yoke using an elastic member without using an adhesive and without caulking, each magnet can be easily attached and detached by releasing the bias of the elastic member. Therefore, recyclability is improved. Further, according to the configuration of the present invention described in claim 2, the yoke has a plurality of stoppers, and the plurality of magnets are arranged on the inner wall of the yoke with one ends of the magnets being in contact with the stoppers. When the other end of the magnet is pressed against the stopper by the elastic member elastically mounted between the opposing stopper and assembled to the yoke, the plurality of magnets are assembled using the elastic member without being restricted to the divided form. And increase the degree of freedom in design. According to the third aspect of the present invention, the stopper provided so as to protrude toward the inner wall of the yoke also serves as a stopper for restricting the circumferential movement of the brush holder. The stopper of the brush holder to be fitted restricts the movement of the magnet in the axial direction, so the stopper for positioning the magnet can also be used for positioning the magnet and the brush holder, and the positioning accuracy between the brush and the magnet Can also be improved, which can contribute to an improvement in motor efficiency.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a fixed state of a magnet to a yoke.

FIG. 2 is an enlarged explanatory view of a clip elastically mounted between magnets.

FIG. 3 is a front view and a right side view of the clip.

FIG. 4 is an explanatory view of a ridge formed on a yoke.

FIG. 5 is an explanatory sectional view of a ridge in FIG. 4;

FIG. 6 is an explanatory view of a ridge and a clip positioning projection formed on a yoke.

FIG. 7 is an explanatory sectional view of the clip positioning projection of FIG. 6;

FIG. 8 is an explanatory view showing a state where the yoke and the brush holder are assembled.

9 is an explanatory diagram of the yoke of FIG. 8 as viewed from the left side.

FIG. 10 is a cross-sectional view showing an overall configuration of a pump operating motor of the antilock brake device for a vehicle.

FIG. 11 is a left side view of the pump operating motor of FIG. 10;

FIG. 12 is a right side view of the pump operating motor of FIG. 10;

FIG. 13 is a partially cutaway explanatory view of the actuator.

14 is a partially cutaway explanatory view of the actuator of FIG. 13 as viewed from the direction of arrows AA.

FIG. 15 is a configuration diagram schematically showing an anti-lock brake device for a vehicle.

FIG. 16 is an explanatory view showing a fixed state of a magnet to a yoke according to another example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Electronic control unit 2 Actuator 3, 4 Reservoir 5, 6 Plunger pump 7 Pump drive motor 8 _Fl , 8 _Rr , 8 _Rl , 8 _Fr Check valve 9 Block body 10 Solenoid 11 Connector 12 Rotary shaft 12a Recess 12b Recess inner wall 12c Eccentricity Shaft 13 Body end 14 Terminal 15 Yoke 15a Convex portion 15b Opening 15c Step 15d Step upright wall 15e Bottom 15f Clip positioning protrusion 15g Magnet positioning protrusion 16 Magnet 16a One end 16b Other end 16c Magnet taper portion 16d Edge Part 17 ridge 17a side surface 18 clip 18a pressing part 18b connecting part 18c rising end part 18d taper part 19 core 20 insulating material 21 armature winding 22 commutator 23 brush holder 23a fitting upright wall 23 Flange 23c flange portion outer wall 23d upstanding end wall 23e engaging protrusions 24 brush 25 spring 26 housing 27 rotor side end portion 28 the shaft end ball bearing 29 supporting ball bearing 30 actuating the ball bearing 31 body side ball bearing

 ──────────────────────────────────────────────────続 き Continued on front page F term (reference) 3D049 BB33 CC02 HH12 5H607 BB01 BB14 CC01 CC05 DD03 DD08 DD09 DD10 DD16 FF06 GG08 JJ08 JJ10 KK02 KK08 5H622 CA02 CA10 CB01 PP04 PP10 PP15 5H623 AA10 BB07 GG13 LL13

Claims (3)

[Claims] 1. A yoke, a stator having a plurality of magnets assembled on an inner wall of the yoke, and one end inserted into an apparatus main body of an anti-lock brake device for a vehicle and rotatably supported, and the apparatus main body. A rotary shaft having an eccentric shaft portion for operating a pump provided in the hydraulic circuit, a rotor and a commutator mounted on the rotary shaft, and a brush capable of supplying power to the commutator from the apparatus body side. A brush holder, and a pump operating motor of an anti-lock brake device for a vehicle, comprising: a housing that covers an opening of the yoke and is interposed between the yoke and the device body side. The yoke wall is integrally formed so as to protrude inward, and has one or more stoppers extending in the axial direction, and each of the plurality of magnets has one end connected to the stopper. Attached from the side and disposed on the inner wall of the yoke, and is attached to the yoke by being pressed against the stopper by an elastic member elastically mounted between opposing other ends of adjacent magnets. For operating the pump of the anti-lock brake device for vehicles. 2. A yoke, a stator having a plurality of magnets assembled to an inner wall of the yoke, and one end inserted into an apparatus main body of an antilock brake device for a vehicle and rotatably supported, and the apparatus main body. A rotary shaft having an eccentric shaft portion for operating a pump provided in the hydraulic circuit, a rotor and a commutator mounted on the rotary shaft, and a brush capable of supplying power to the commutator from the apparatus body side. A brush holder, and a pump operating motor of an anti-lock brake device for a vehicle, comprising: a housing that covers an opening of the yoke and is interposed between the yoke and the device body side. The yoke wall is integrally formed so as to protrude inward and has a plurality of stoppers extending in the axial direction. Each of the plurality of magnets has one end contacting the stopper. The vehicle is characterized in that the other end of each magnet is disposed on the inner wall of the yoke, and the other end of each magnet is pressed against the stopper by an elastic member elastically mounted between the stopper and the opposite stopper, and is assembled to the yoke. Pump operating motor for anti-lock brake device. 3. The stopper provided on the yoke also serves as a stopper for restricting the circumferential movement of the brush holder, and the stopper of the brush holder fitted to the stopper of the yoke is provided in the axial direction of the magnet. The motor for operating a pump of an antilock brake device for a vehicle according to claim 1 or 2, wherein the movement of the pump is controlled.