CN100549697C - The hub unit that is used for driving wheel - Google Patents
The hub unit that is used for driving wheel Download PDFInfo
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- CN100549697C CN100549697C CNB2004800340703A CN200480034070A CN100549697C CN 100549697 C CN100549697 C CN 100549697C CN B2004800340703 A CNB2004800340703 A CN B2004800340703A CN 200480034070 A CN200480034070 A CN 200480034070A CN 100549697 C CN100549697 C CN 100549697C
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- sensor
- hub unit
- driving wheel
- circle
- retaining member
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Abstract
The present invention relates to a kind of hub unit that is used for driving wheel.The sensor that is used to detect rotating speed is a kind of active sensor, and the induction part of this sensor (35) directly towards magnetic encoder (10), does not have middleware between them; The wire harness (34) (or connector) that is used for detecting the sensor (30) of rotating speed takes out from the gap between articulated joint (N) and the constant velocity cardan joint (9).
Description
Technical field
The present invention relates to a kind of hub unit that is used for driving wheel, this hub unit is provided with the rotation detecting sensor that for example is used for ABS and is suitable for and is equipped with thereon towards the wheel support structure of the magnetic encoder of this sensor.
Background technology
Be used for the hub unit of driving wheel, wheel hub and inner ring are rotatably supported in the internal side diameter of the outer ring of bearing by a plurality of rolling elements.
The outer ring is fixed to the articulated joint (knuckle) that constitutes suspension system by the support flange that is arranged on its outer peripheral face.The inner peripheral surface of outer ring is provided with a plurality of outer race tracks, and wheel hub and inner ring are bearing in the internal side diameter of outer ring.
Wheel hub is provided with the mounting flange that is used to install wheel at its peripheral portion.First inner race track is formed at the middle part of the outer peripheral face of wheel hub, and the inner ring secure fit is on the path stage portion of the inner end of wheel hub.This inner ring is formed with second inner race track.At the central part of wheel hub, for example be used for the hub unit of driving wheel, be provided with and be used for the constant velocity cardan joint spline fitted and fixing female spline.
Similarly, for the wheel rotatably support in suspension system and control anti-lock braking system (ABS) or traction control system (TCS), have a kind of hub unit that has the sensor that is used to detect the vehicle rotating speed.
When adopting this hub unit, along with the rotation of wheel, be fixed to inner ring and upwards magnetizing the magnetic encoder rotation that a plurality of alternating N utmost points and the S utmost point are arranged week, be arranged to towards the output variation of the sensor of this magnetic encoder.Because the frequency that this output changes and the rotating speed of wheel are proportional,, control ABS or TCS thus rightly so signal of sensor is input to control module to obtain the rotating speed of wheel by wire harness.
It should be noted that the conventional example relevant with above-mentioned prior art is disclosed in Jap.P. and openly applies for No.2000-221202, among 2000-221203 and the 2000-221204, will describe them in the back.
By the way, the hub unit of the above-mentioned type is to form like this: after on the inner ring that magnetic encoder etc. is installed to bearing, hub unit transportation as a whole is fixed to its outer ring screw thread in the articulated joint of vehicle body by bolt etc. in the assembling process of vehicle subsequently.Like this, hub unit just is installed to vehicle body side.
Yet, under the situation of the hub unit that is used for driving wheel, be provided with like this, that is, the sensor that is used to detect the rotating speed of wheel is installed in the side of the articulated joint of vehicle body usually.
Therefore, need to check and to be used in the articulated joint side of vehicle body whether suitable detect the sensor of rotating speed and the relation of the position between the magnetic encoder of hub unit side or it is not adjusted.The result is that it is complicated that assembling and adjustment process become.
For this reason, as magnetic encoder, the sensor that is used to detect rotating speed also should be installed in the hub unit side in advance.
Yet, because constant velocity cardan joint is arranged on the inboard of hub unit on vehicle-width direction, the space that is used for sensor installation is less, be installed to the hub unit side so be difficult to be used to detect the sensor of rotating speed, in addition, arrange the wire harness that stretches out from sensor or prevent it and constant velocity cardan joint between interference bother very much.
Particularly, the coding (wire harness or connector) that is used to connect sensor stretches out articulated joint by the boring in the articulated joint.Yet, owing to must in articulated joint, hole,, can increase the size of articulated joint or weight to compensate this reduction so the intensity of articulated joint will reduce.Similarly, although the space between articulated joint and the Joint CVJ is enough to guarantee to prevent the interference with wire harness or connector usually, but, may need to increase the size or the weight of articulated joint in order to guarantee to be used to prevent and the space of wire harness or connector interference.
In addition, the internal wiring of sensor is linear is provided with and is exposed to outside the cap sometimes.Because sensor is arranged on the installation diameter outside of outer ring when the internal wiring linearity is provided with, so need hole in articulated joint or form excision portion or do similar preparation, this may cause the intensity reduction of articulated joint.Similarly, owing to when the internal wiring linearity is provided with, need be used to prevent space with the interference of wire harness or connector, so the size of articulated joint or weight may increase.
The present invention has considered above-mentioned situation, the purpose of this invention is to provide a kind of hub unit that is used for driving wheel, and it is provided with and is used to detect the sensor of rotating speed and can be installed to articulated joint by rights easily.
Summary of the invention
To achieve these goals, according to a first aspect of the invention, provide a kind of hub unit that is used for driving wheel, wherein:
A track circle in static circle and the rotation circle is that side face has the outer ring of a plurality of outer race tracks within it;
Another track circle in described static circle and the described rotation circle is an inner ring assembly, and this assembly comprises the axle part that is bonded to each other and inner ring and have a plurality of inner race tracks on its outer peripheral face independently;
Described axle part axially is formed with in the inner race track one and be formed with the path stage portion of diameter less than the inner race track part at its axial end portion in the middle part at it; And
Described independently inner ring its outer peripheral face have in the inner race track another and be engaged on the described path stage portion,
Described hub unit comprises:
Be fixed to the sensor retaining member of the static circle of the described hub unit that is used for driving wheel;
By the supporting of this sensor retaining member and towards being fixed to the sensor of described rotation circle with the scrambler that rotates with described rotation circle; And
Take out the wire harness or the connector of the detection signal of this sensor from this sensor being used to of stretching out,
Wherein:
Sensor unit comprises described sensor and described wire harness or connector;
All parts in the axial outside of outer ring and the scope at the hub unit mounting hole of articulated joint of the described sensor unit that is provided are arranged on the radially inner side of inwall of the hub unit mounting hole of described articulated joint;
At wire harness described in the finished car or connector to be arranged on radial outside with the non-contacting mode of constant velocity cardan joint;
Described sensor is an active sensor;
The induction part of described sensor does not have middleware directly towards described scrambler between them; And
Described wire harness or connector stretch out the gap between described articulated joint and described constant velocity cardan joint.
At the hub unit that is used for driving wheel according to first aspect present invention, preferably, the gap between described sensor or described sensor retaining member and the revolving part that is made of end face, external diameter or the described constant velocity cardan joint of described inner ring is at least set for and is not less than 0.1mm and less than the gap between described constant velocity cardan joint and the described articulated joint.
According to a second aspect of the invention, provide a kind of hub unit that is used for driving wheel, wherein:
A track circle in static circle and the rotation circle is that side face has the outer ring of a plurality of outer race tracks within it;
Another track circle in described static circle and the described rotation circle is an inner ring assembly, and this assembly comprises the axle part that is bonded to each other and inner ring and have a plurality of inner race tracks on its outer peripheral face independently;
Described axle part axially is formed with in the inner race track one and be formed with the path stage portion of diameter less than the inner race track part at its axial end portion in the middle part at it; And
Described independently inner ring its outer peripheral face have in the inner race track another and be engaged on the described path stage portion,
Described hub unit comprises:
Be fixed to the sensor retaining member of the static circle of the described hub unit that is used for driving wheel;
By the supporting of this sensor retaining member and towards being fixed to the sensor of described rotation circle with the scrambler that rotates with described rotation circle;
Take out the wire harness or the connector of the detection signal of this sensor from this sensor being used to of stretching out, and
The sensor unit that comprises described sensor and described wire harness or connector,
Wherein:
Described sensor is an active sensor; And
The internal wiring of described sensor is arranged in the cap in circle-shaped or circular-arc mode.
According to a third aspect of the invention we, be provided for the hub unit of driving wheel, wherein:
A track circle in static circle and the rotation circle is that side face has the outer ring of a plurality of outer race tracks within it;
Another track circle in described static circle and the described rotation circle is an inner ring assembly, and this assembly comprises the axle part that is bonded to each other and inner ring and have a plurality of inner race tracks on its outer peripheral face independently;
Described axle part axially is formed with in the inner race track one and be formed with the path stage portion of diameter less than the inner race track part at its axial end portion in the middle part at it; And
Described independently inner ring its outer peripheral face have in the inner race track another and be engaged on the described path stage portion,
Described hub unit comprises:
Be fixed to the sensor retaining member of the static circle of the described hub unit that is used for driving wheel;
By the supporting of this sensor retaining member and towards being fixed to the sensor of described rotation circle with the scrambler that rotates with described rotation circle;
Take out the wire harness or the connector of the detection signal of this sensor from this sensor being used to of stretching out, and
The sensor unit that comprises described sensor and described wire harness or connector,
Wherein:
Described sensor is an active sensor; And
The wire harness of described sensor or connector take out by the axial groove that is formed in the described articulated joint.
According to a forth aspect of the invention, provide a kind of hub unit that is used for driving wheel, wherein:
A track circle in static circle and the rotation circle is that side face has the outer ring of a plurality of outer race tracks within it;
Another track circle in described static circle and the described rotation circle is an inner ring assembly, and this assembly comprises the axle part that is bonded to each other and inner ring and have a plurality of inner race tracks on its outer peripheral face independently;
Described axle part axially is formed with in the inner race track one and be formed with the path stage portion of diameter less than the inner race track part at its axial end portion in the middle part at it; And
Described independently inner ring its outer peripheral face have in the inner race track another and be engaged on the described path stage portion,
Described hub unit comprises:
Be fixed to the sensor retaining member of the static circle of the described hub unit that is used for driving wheel;
By the supporting of this sensor retaining member and towards being fixed to the sensor of described rotation circle with the scrambler that rotates with described rotation circle;
Take out the wire harness or the connector of the detection signal of this sensor from this sensor being used to of stretching out, and
The sensor unit that comprises described sensor and described wire harness or connector,
Wherein:
Described sensor is an active sensor.
At the hub unit that is used for driving wheel according to a forth aspect of the invention, preferably, described sensor and the described sensor retaining member that will be fixed to the upper are by resin molded formation one.
At the hub unit that is used for driving wheel according to a forth aspect of the invention, preferably, described sensor press fit and be fixed on the described sensor retaining member and form one.
At the hub unit that is used for driving wheel according to a forth aspect of the invention, preferably, be provided with the exhaust opening that is used for draining in the bottom of described sensor retaining member.
At the hub unit that is used for driving wheel according to a forth aspect of the invention, preferably, the IC terminal in the described sensor is crooked.
At the hub unit that is used for driving wheel according to a forth aspect of the invention, preferably, described sensor and described sensor retaining member can be fixed to one another by the ratchet cooperation.
As mentioned above, according to the present invention, sensor is for for example adopting the active sensor of Hall element or MR element, and the induction part of sensor does not have middleware directly towards scrambler between them.Because the wire harness or the connector of sensor stretch out from the gap between articulated joint and the constant velocity cardan joint, so it is different with traditional hub unit, need in articulated joint, not form the hole, thereby the intensity of comparing articulated joint with traditional hub unit is improved, this helps the lightweight of articulated joint and saves the space, and makes the assembling bearing become easy.
According to an aspect of the present invention, circle-shaped or circular-arc being arranged in the cap of the internal wiring of sensor, this helps to reduce the size of articulated joint and the intensity of weight and raising articulated joint.Can also effectively utilize circumferential vacant space, this helps to reduce to comprise the size of the hub unit of sensor.
In addition, according to a further aspect in the invention, the wire harness or the connector that are used to take out the detection signal of sensor stretch out by the axial groove that is formed in the articulated joint, and this helps to reduce the size of articulated joint and weight and improves the intensity of articulated joint.
In addition, according to a further aspect in the invention, because preferably sensor is fixed to the sensor retaining member by resin molded or press fit and forms one, so the shape of sensor and sensor retaining member can be simplified, in addition, can improve the fixed performance of sensor and sensor retaining member.
In addition, according to a further aspect in the invention because the exhaust opening that is used for draining preferably is formed on the bottom of sensor retaining member, thus water do not accumulate between sensor retaining member and the bearing, thereby can keep sealing property satisfactorily.
In addition, according to a further aspect in the invention,,, saved manufacturing cost simultaneously so the length of whole sensor can reduce and make the sensor compactness diametrically because the IC terminal is preferably crooked in sensor.
In addition, according to a further aspect in the invention, preferably, sensor and sensor retaining member are fixed to one another by the ratchet cooperation, thereby the form that the sensor retaining member can more be simplified forms.In addition, owing to be not the main confining force of elastic force conduct,, can improve the fixed performance between sensor and the sensor retaining member so confining force can not worsen.
Description of drawings
Fig. 1 is the longitudinal section according to the hub unit that is used for driving wheel of the embodiment of the invention;
Fig. 2 is the sectional view according to the major part of the hub unit that is used for driving wheel of first embodiment of the invention that is shown in Fig. 1;
Fig. 3 is the side view of sensor that is used to detect rotating speed that is shown in Fig. 2;
Fig. 4 A and Fig. 4 B are the schematic sectional view that illustrates respectively according to the hub unit that is used for driving wheel of the modification of first embodiment of the invention;
Fig. 5 is the synoptic diagram of inner structure of sensor that is used to detect rotating speed according to second embodiment of the invention;
Fig. 6 is the synoptic diagram of inner structure of sensor that is used to detect rotating speed according to the modification of second embodiment of the invention;
Fig. 7 is the sectional view according to the major part of the hub unit that is used for driving wheel of third embodiment of the invention;
Fig. 8 is the skeleton view that is shown in the articulated joint of Fig. 7;
Fig. 9 A is the sectional view according to the major part of the hub unit that is used for driving wheel of fourth embodiment of the invention, and Fig. 9 B and 9C are used to detect the sensor of rotating speed and the side view of sensor retaining member;
Figure 10 A is the sectional view according to the major part of the hub unit that is used for driving wheel of fifth embodiment of the invention, and Figure 10 B and Figure 10 C are used to detect the sensor of rotating speed and the side view of sensor retaining member;
Figure 11 is the sectional view according to the major part of the hub unit that is used for driving wheel of the modification of fifth embodiment of the invention;
Figure 12 is the sectional view according to the major part of the hub unit that is used for driving wheel of sixth embodiment of the invention;
Figure 13 is used to detect the sensor of rotating speed and the side view of sensor retaining member;
Figure 14 A and 14B are respectively according to the sectional view of the major part of the hub unit that is used for driving wheel of first conventional example of seventh embodiment of the invention and are used to detect the side view of the sensor of rotating speed;
Figure 15 A and 15B are respectively according to the sectional view of the major part of the hub unit that is used for driving wheel of second conventional example of seventh embodiment of the invention and are used to detect the side view of the sensor of rotating speed;
Figure 16 A and 16B are respectively according to the sectional view of the major part of the hub unit that is used for driving wheel of seventh embodiment of the invention and are used to detect the side view of the sensor of rotating speed;
Figure 17 A is used to detect the sensor of rotating speed and the skeleton view of sensor retaining member according to the hub unit that is used for driving wheel of eighth embodiment of the invention, Figure 17 B is the skeleton view of modification of sensor that is used to detect rotating speed according to the hub unit that is used for driving wheel of eighth embodiment of the invention, and Figure 17 C is the skeleton view according to the modification of the sensor retaining member of the hub unit that is used for driving wheel of eighth embodiment of the invention;
Figure 18 is used to detect the sensor of rotating speed and the skeleton view of sensor retaining member according to the hub unit that is used for driving wheel of the modification of eighth embodiment of the invention.
Embodiment
The hub unit that is used for driving wheel according to the embodiment of the invention is described below with reference to accompanying drawings.
(general structure that is used for the hub unit of driving wheel)
Fig. 1 is the longitudinal section according to the hub unit that is used for driving wheel of the embodiment of the invention.
At this hub unit that is used for driving wheel, be used for the wheel hub 2 of driving wheel and inner ring 3 is rotatably supported in outer ring 1 by a plurality of rolling elements 4 internal side diameter.
On the inner peripheral surface of outer ring 1, be provided with a plurality of outer race track 5a, 5b, be used for the wheel hub 2 of driving wheel and the internal side diameter that inner ring 3 is bearing in outer ring 1.
The wheel hub 2 that is used for driving wheel is provided with mounting flange M, and this mounting flange is used for wheel W and brake disc D are installed to the periphery of the outer end in the outside (left side of figure) that is positioned at vehicle body after installation.
Middle part at the outer peripheral face of the wheel hub 2 that is used for driving wheel forms the first inner race track 7a, and inner ring 3 is fixedly mounted in and forms in the inner end of same wheel hub 2 on the path stage portion 6 cylindraceous, forms the second inner race track 7b on inner ring 3.
On the inner peripheral surface in the radial direction of the wheel hub 2 that is used for driving wheel, form female spline 8, the male splined shaft 9a of constant velocity cardan joint 9 and female spline 8 spline fitted and be fixed on this place.
Between the outer end of the outer peripheral face of wheel hub 2 and outer ring 1, be plugged with seal S.
(first embodiment)
Fig. 2 illustrates according to first embodiment of the invention and is shown in the amplification sectional view of major part of the hub unit that is used for driving wheel of Fig. 1.Fig. 3 is the side view of sensor that is used to detect rotating speed that is shown in Fig. 2.
In first embodiment, be provided with magnetic encoder 10 in the inboard (right side among Fig. 2) of the vehicle-width direction of inner ring 3.This magnetic encoder 10 forms plate-like, and is magnetized to alternatively and upwards has the N utmost point and the S utmost point its week.
It should be noted that this magnetic encoder can be made by rubber, resin etc.
These core metal spares are by making as the low carbon steel plate of SPCC and anticorrosive coating has been passed through on the surface of these core metal spares.Alternatively, described core metal spare is by making as the SUS430 stainless steel, and its thickness is about 0.1mm to 1.5mm.
On the surface of the inboard of the outward extending in the radial direction annular plate 13a that magnetic encoder 10 is fixed at core metal spare 13, be arranged to towards this magnetic encoder 10 as the sensor 30 that is used to detect rotating speed of the active sensor that is used to detect the driving wheel rotating speed.
It is general that this sensor 30 that is used to detect rotating speed is connected to outer ring 1 by sensor retaining member 20 in fact, and in the inboard of the hub unit mounting hole NH that is positioned at articulated joint N in the radial direction, so that do not interfere mutually with constant speed direction joint 9.
The sensor 30 that is used to detect rotating speed is fixed to outer ring 1, and in the inboard of the hub unit mounting hole NH that is positioned at articulated joint N in the radial direction.Yet this sensor 30 does not contact with articulated joint N and not in order to install or to stand special processing in order preventing to interfere.
The integrally formed resin portion 22 of annular board that sensor retaining member 20 is included in the core metal spare 21 on the outer peripheral face of the inner end 1a that is force-fitted in outer ring 1 on the vehicle-width direction and upwards extends internally with footpath at this core metal spare 21.
As shown in Figure 3, be used to detect the sensor main body 31 that the sensor 30 of rotating speed has the annular of forming.This sensor main body 31 has the bigger volume of each ingredient that is used to hold sensor, thereby also can not have problems even the quantity of these ingredients is more.
As shown in Figure 3, make it to engage to remain on this resin portion by adopting a plurality of bolts 23 (being three bolts in an illustrated embodiment) main body 31 to be fixed on the resin portion 22 of sensor retaining member 20 with this resin portion 22.This sensor main body 31 is not limited to bolt with respect to the joining tool (measure) of sensor retaining member 20, but can be any form, for example is included in anchor clamps type or press fit type among the embodiment that will describe subsequently.This joining tool can be by integrally moulded and fixing with resin portion.
Sensor main body 31 is formed with the counterbore 32 of the head that is used to hold bolt 23, so that avoid the head of bolt 23 and constant velocity cardan joint 9 to interfere.
As shown in Figure 3, sensor main body 31 is formed with excision portion 33, and the connecting portion 34a that is used for taking out from sensor the wire harness 34 (coding or connector) of detection signal draws and extends from this excision portion 33.
Wire harness 34 (coding that stretches out) can stretch out from sensor main body 31.Yet, replace this situation, can be arranged to unshowned connector and stretch out.
The connecting portion 34a of wire harness 34 (coding or connector) by as having of resin or vinyl class allow the deformability of its alteration of form when the outside load that applies above predetermined value and be not higher than predetermined value when loading maybe not to be used to when other is loaded to keep and to keep it and be used to have the material of the shape hold facility of shape to be made when except that quiescent load, not applying.
When load is not higher than predetermined value, the connecting portion 34a of wire harness 34 (coding or connector) keeps its shape, so that at least before its hub unit mounting hole NH from articulated joint N comes out, with respect to its more close outside diameter of external diameter (under the situation of same axial location) of constant velocity cardan joint 9.
By this layout, the connecting portion 34a of wire harness 34 (coding or connector) is positioned at the inboard in the radial direction the hub unit mounting hole NH's of articulated joint N, thereby does not interfere mutually with constant velocity cardan joint 9.
As shown in Figure 2, form through hole 24 and 25 respectively on the core metal spare 21 of sensor retaining member 20 and resin portion 22, the induction part 35 that stretches out from sensor main body 31 inserts these through holes 24 and 25.
This induction part 35 is arranged on vehicle-width direction to expose with towards magnetic encoder 10 from core metal spare 21 outside (left side Fig. 2).By this layout, when using hub unit, the magnetic encoder 10 that is fixed on the inner ring 3 rotates when driving wheel rotates, and is arranged to thus change towards the output of the sensor 30 of magnetic encoder 10.Because the frequency that this output changes and the rotating speed of driving wheel are proportional,, can control rightly ABS or TCS thus so can be sent to a control device (not shown) to obtain the rotating speed of driving wheel from the output signal of sensor 30.
A plurality of induction parts 35 can be set, perhaps a plurality of Hall IC be connected on the single induction part.Reference marker 26 expression is fixed to sealing lip or the seal on the cartridge 11, thereby hermetic seal is formed on the space between the core metal spare 21 of cartridge 11 and sensor retaining member 20, to protect induction part 35 etc.This position can be a labyrinth.If be labyrinth, just exist rainwater etc. may enter near the induction part 35 worry, thereby preferably be formed for draining the exhaust opening of rainwater etc., in other embodiment that will describe hereinafter in the bottom of the core metal spare 21 of sensor retaining member 20.Reference marker 36 expressions are used for preventing that by the space between sealing resin section 22 and the sensor main body 31 sealing enters the O shape circle of induction part 35.
As mentioned above, according to first embodiment, the sensor 30 that is used to detect rotating speed is connected to outer ring 1 by sensor retaining member 20, and is positioned at the radially inner side of the hub unit mounting hole NH of articulated joint N, thereby does not interfere mutually with constant velocity cardan joint 9.When load was not more than predetermined value, the connecting portion 34a of wire harness 34 (coding or connector) kept its shape, so that at least before its hub unit mounting hole NH from articulated joint N comes out, with respect to its more close outside diameter of external diameter of constant velocity cardan joint 9.Should note, though be used to detect the inboard that the footpath of the hub unit mounting hole NH that the sensor 30 of rotating speed is arranged at articulated joint N makes progress, but the relation of the position between hub unit mounting hole NH and the sensor 30 is not limited to form shown in Figure 2, but they can depart from the axial direction in whole or in part.
Similarly, according to present embodiment, the sensor 30 that is used to detect rotating speed is the active sensors that are made of Hall element or MR element, its induction part 35 is arranged to directly in the face of magnetic encoder 10, between this induction part 35 and magnetic encoder 10, there is not middleware, and the wire harness 34 (coding or connector) that is used to detect the sensor 30 of rotating speed stretches out from the space between articulated joint N and the constant velocity cardan joint 9, thereby compare with situation of the prior art, the intensity that need not form hole and articulated joint N on articulated joint N is improved, and this can help the lightweight of articulated joint N and save the space.In addition, bearing is installed and is become easier.
(modification of first embodiment)
Fig. 4 A and Fig. 4 B are the schematic sectional view that illustrates respectively according to the hub unit that is used for driving wheel of the modification of first embodiment of the invention.
Preferably, being used to detect the sensor main body 31 (cap) of sensor 30 of rotating speed and the gap between the revolving part that is made of end face, external diameter and the constant velocity cardan joint (CVJ) 9 of inner ring 3 at least sets for and is not less than 0.1mm and less than the gap between constant velocity cardan joint 9 and the articulated joint N.
That is, shown in Fig. 4 A and 4B, be used to detect the sensor 30 of rotating speed and the gap (1) between the revolving part or (2) and set for and be not less than 0.1mm and less than the gap between constant velocity cardan joint 9 and the articulated joint N.By this set, be used to detect being spaced between the sensor 30 of rotating speed and the revolving part and have maze-type structure.
The basis of setting described " 0.1mm " is, when considering constant velocity cardan joint 9 that the displacement that causes owing to the elastic deformation by plane vibration and bearing causes and the interference between the revolving part, this is a minimum clearance.
(second embodiment)
Fig. 5 is the synoptic diagram of inner structure of sensor that is used to detect rotating speed that illustrates according to second embodiment of the invention.
In a second embodiment, be contained in the electronic component a of the sensor in the sensor main body 31 (cap) of circle-shaped layout, b, c... is along the circle-shaped layout of this cap.In addition, these electronic components a, b, c... are connected to wire harness 34 (coding or connector).
As mentioned above, according to present embodiment, the internal wiring of sensor 30 that is used for detecting rotating speed is in the circle-shaped layout of sensor main body 31 (cap), and this helps to reduce the size of articulated joint N and weight and improves its intensity.Can also effectively utilize circumferential vacant space, this helps to reduce to comprise the size of the hub unit of sensor.
(modification of second embodiment)
Fig. 6 is the synoptic diagram of inner structure of sensor that is used to detect rotating speed that illustrates according to the modification of second embodiment of the invention.
In this modification, it is circular-arc that sensor main body 31 (cap) adopts, and be contained in the electronic component a with the sensor in this circular-arc sensor main body 31 (cap), b, and c... is along the circular shape setting of this cap.In addition, these electronic components a, b, c... are connected to wire harness 34 (coding or connector).
As mentioned above, according to this modification, with circular-arc layout, this helps to reduce the size of articulated joint N and weight and also can improve its intensity the internal wiring of sensor 30 that is used for detecting rotating speed at sensor main body 31 (cap).Can also effectively utilize circumferential vacant space, this helps to reduce to comprise the size of the hub unit of sensor.
(the 3rd embodiment)
Fig. 7 is the sectional view according to the major part of the hub unit that is used for driving wheel of third embodiment of the invention, and Fig. 8 is the skeleton view that is shown in the articulated joint of Fig. 7.
The structure of the basic structure of the 3rd embodiment and aforementioned first embodiment is basic identical, so difference will only be described.
The hub unit mounting hole NH of articulated joint N is formed with the axial groove 40 that extends in the axial direction.
Except sensor main body 31 and induction part 35, the sensor 30 that is used to detect rotating speed also has accessory body 31a, and this accessory body 31a is contained in the axial groove 40 of articulated joint N and by 21 supportings of core metal spare.
Wire harness 34 (coding or connector) inwardly stretches out on vehicle-width direction from accessory body 31a, and extends internally on vehicle-width direction in axial groove 40.
As mentioned above, according to the present invention, because by being formed on the wire harness 34 (coding or connector) that axial groove 40 on the articulated joint N stretches out the sensor 30 that is used to detect rotating speed, so can reduce the size of articulated joint N and weight and improve its intensity.
(the 4th embodiment)
Fig. 9 A is the sectional view according to the major part of the hub unit that is used for driving wheel of fourth embodiment of the invention, and Fig. 9 B and 9C are used to detect the sensor of rotating speed and the side view of sensor retaining member.
The basic structure of the 4th embodiment and the above-mentioned first or the 3rd embodiment's is basic identical, so difference will only be described.
That is, sensor main body 31 and having of core metal spare 21 (lid) are that the part 21a in U-shaped cross section is by the resin molded one that forms securely substantially.
In this case, sensor main body 31 forms the annular (circle pie) shown in Fig. 9 B, perhaps is replaced by the arc (fan-shaped) shown in Fig. 9 C.
Should note, as openly applying for No.2000-221202 at above-mentioned Jap.P., prior art among 2000-221203 and the 2000-221204 discloses the sensor that is used to detect rotating speed, and this sensor is by waiting that the sensor retaining member that is fixed to non-rotating side locks or is threadedly engaged with it.Yet in this case, the sensor and the sensor retaining member that are used to detect rotating speed may have complicated structure, and the sensor and the fixed performance between the sensor retaining member that are used to detect rotating speed in addition may be always not sufficient.
According to foregoing description, in the present embodiment, sensor main body 31 with have substantially for the part 21a in U-shaped cross section forms by resin molded, be used to detect the sensor 30 of rotating speed and the structure of sensor retaining member 20 thereby can simplify.In addition, can improve and be used to detect the sensor 30 of rotating speed and the fixed performance between the sensor retaining member 20.
Similarly, in the present embodiment, being used to detect the sensor main body 31 (cap) of sensor 30 of rotating speed and the gap between the revolving part that is made of end face, its external diameter and the constant velocity cardan joint 9 of inner ring 3 at least sets for and is not less than 0.1mm and less than the gap between constant velocity cardan joint 9 and the articulated joint N.That is, shown in Fig. 4 A and 4B, be used to detect the sensor 30 of rotating speed and the gap (1) between the revolving part and (2) and set for respectively and be not less than 0.1mm and less than the gap between constant velocity cardan joint 9 and the articulated joint N.By this set, be used to detect being spaced between the sensor 30 of rotating speed and the revolving part and have maze-type structure.It should be noted that the basis of setting described " 0.1mm " is, when considering constant velocity cardan joint 9 that the displacement that causes owing to the elastic deformation by plane vibration and bearing causes and the interference between the revolving part, this is a minimum clearance.
(the 5th embodiment)
Figure 10 A is the sectional view according to the major part of the hub unit that is used for driving wheel of fifth embodiment of the invention, and Figure 10 B and Figure 10 C are used to detect the sensor of rotating speed and the side view of sensor retaining member.
The basic structure of the 5th embodiment and above-mentioned the first, the 3rd or the 4th embodiment's is basic identical, so difference will only be described.
That is sensor main body 31 one press fits and to be fixed to having of core metal spare 21 (lid) basic on the part 21b in L shaped cross section.
In this case, sensor main body 31 forms the annular (circle pie) shown in Figure 10 B, perhaps is replaced by the arc (fan-shaped) shown in Figure 10 C.
Should note, as openly applying for No.2000-221202 at above-mentioned Jap.P., prior art among 2000-221203 and the 2000-221204 discloses the sensor that is used to detect rotating speed, and this sensor is by waiting that the sensor retaining member that is fixed to non-rotating side locks or is threadedly engaged with it.Yet in this case, the sensor and the sensor retaining member that are used to detect rotating speed may have complicated structure, and the sensor and the fixed performance between the sensor retaining member that are used to detect rotating speed in addition may be always not sufficient.
According to foregoing description, in the present embodiment, it is on the part 21b in L shaped cross section substantially that sensor main body 31 one are press fit into the having of core metal spare 21 (lid) that will be fixed in the above, and is used to detect the sensor 30 of rotating speed and the structure of sensor retaining member 20 thereby can simplify.In addition, because the contact area between sensor main body 31 and the core metal spare 21 (lid) enlarges markedly, be used to detect the sensor 30 of rotating speed and the fixed performance between the sensor retaining member 20 so can improve.
Figure 11 is the sectional view according to the major part of the hub unit that is used for driving wheel of the modification of fifth embodiment of the invention.
That is, be crooked in the part of the internal side diameter of core metal spare 21 (lid), it is basic on this sweep 21a in U-shaped cross section that sensor main body 31 one press fits and being fixed on have.
(the 6th embodiment)
Figure 12 is the sectional view according to the major part of the hub unit that is used for driving wheel of sixth embodiment of the invention.
Figure 13 is used to detect the sensor of rotating speed and the side view of sensor retaining member.
The basic structure of the 6th embodiment and above-mentioned first to three embodiment's is basic identical, so difference will only be described.
As shown in figure 12, sensor retaining member 20 only is made of core metal spare 21 (lid), this core metal spare 21 is fixed to the inner end 1a of outer ring 1 along vehicle-width direction at its cardinal extremity, and be formed with to have substantially and be the part 21a in U-shaped cross section, this part 21a extends internally vertically and extends internally diametrically from cardinal extremity.Be provided with like this, the sensor main body 31 of sensor 30 that promptly is used to detect rotating speed is had the encirclement of basic part 21a for the U-shaped cross section from the inboard on vehicle-width direction.In addition, as (Fig. 4) in the aforementioned embodiment, the internal side diameter of core metal spare 21 (lid) and inner ring 3 space between the inner end 3a on the vehicle-width direction is a maze-type structure, and reference marker 34a represents connector.
By the way, according to prior art owing to not be not provided for the exhaust opening of draining in the bottom of core metal spare 21 (lid), thus water do not discharge but be trapped between core metal spare 21 (lid) and the bearing, thereby the deterioration sealing property.
Under the situation of present embodiment, as shown in figure 13, be provided for the exhaust opening 50 of draining in the bottom of core metal spare 21 (lid), so water can not be trapped between core metal spare 21 (lid) and the bearing, thereby can keep sealing property satisfactorily.
(the 7th embodiment)
Figure 14 comprises according to the sectional view of the major part of the hub unit that is used for driving wheel of first conventional example of seventh embodiment of the invention and is used to detect the side view of the sensor of rotating speed.
Figure 15 A is the sectional view according to the major part of the hub unit that is used for driving wheel of second conventional example of seventh embodiment of the invention, and Figure 15 B is the side view that is used to detect the sensor of rotating speed.
Figure 16 A is the sectional view according to the major part of the hub unit that is used for driving wheel of seventh embodiment of the invention, and Figure 16 B is the side view that is used to detect the sensor of rotating speed.
The basic structure of the 7th embodiment and the above-mentioned first or the 3rd embodiment's is basic identical, so difference will only be described.
In first conventional example shown in Figure 14, the sensor main body 31 that is used to detect the sensor 30 of rotating speed is provided with IC 60.IC terminal 61 stretches out and is connected with wire harness 34 in accessory body 31a from this IC 60.
As mentioned above, in first conventional example shown in Figure 14, because IC terminal 61 linearities (with form of straight lines) are stretched out, can use the common IC that sells on the market, its ratio of performance to price is very high.Yet IC terminal 61 linearities (with form of straight lines) are stretched out the whole sensor 30 length increase diametrically that causes being used to detect rotating speed.
In second conventional example shown in Figure 15, IC terminal 61 with circular turned, is arranged to reduce to be used to detect the radical length of the whole sensor 30 of rotating speed thus in annular sensor main body 31, yet, in second conventional example shown in Figure 16, this may increase manufacturing cost.
For this reason, in present embodiment shown in Figure 16, IC terminal 61 is crooked, and is for example crooked with about 90 degree, can reduce thus to be used to detect rotating speed whole sensor 30 radical length and make its compactness.Simultaneously, can reduce manufacturing cost.
(the 8th embodiment)
Figure 17 A is used to detect the sensor of rotating speed and the skeleton view of sensor retaining member according to the hub unit that is used for driving wheel of eighth embodiment of the invention.
The basic structure of the 8th embodiment and the above-mentioned first or the 3rd embodiment's is basic identical, so difference will only be described.
Should note, as openly applying for No.2000-221202 at above-mentioned Jap.P., prior art among 2000-221203 and the 2000-221204 discloses the sensor that is used to detect rotating speed, and this sensor is by waiting that the sensor retaining member that is fixed to non-rotating side locks or is threadedly engaged with it.Yet, in this case, be used to detect the sensor of rotating speed and the structure that the sensor retaining member may have complexity, in addition, because the elastic force that only uses the sensor retaining member as confining force, is used to detect the sensor and the fixed performance between the sensor retaining member of rotating speed may be always not sufficient.
In the present embodiment shown in Figure 17 A, the sensor 30 that is used to detect rotating speed is formed with to have substantially and is the protuberance 71 of arc, and sensor retaining member 20 is formed with to have and is the recess 72 of arc substantially.Close this recess 72 is formed with and is used for the fixing sharp concave part 72a of ratchet.
Thus, when the protuberance 71 of the sensor 30 that is used for detecting rotating speed is engaged in the recess 72 of sensor retaining member 20 and is used to detect the sensor 30 of rotating speed and sensor retaining member 20 when relatively rotating with respect to each other, protuberance 71 is engaged among the sharp concave part 72a as ratchet, cooperates and fixes thereby make protuberance 71 with basic arc and sharp concave part 72a can enter ratchet each other.
As mentioned above, in the present embodiment, cooperate and fix owing to the protuberance 71 with basic arc and sharp concave part 72a can enter ratchet each other, so sensor retaining member 21 can have the shape of simplification.In addition, owing to be not the main confining force of elastic force conduct,, be used to detect the sensor 30 of rotating speed and the fixed performance between the sensor retaining member 20 thereby can improve so confining force can not worsen.
Figure 17 B is the skeleton view of modification of sensor that is used to detect rotating speed according to the hub unit that is used for driving wheel of eighth embodiment of the invention.
In this modification, the sensor 30 that is used to detect rotating speed is formed with two protuberances 71, and each protuberance all has basic arc.By this set, can further improve and be used to detect the sensor 30 of rotating speed and the fixed performance between the sensor retaining member 20.
Figure 17 C is the skeleton view according to the modification of the sensor retaining member of the hub unit that is used for driving wheel of eighth embodiment of the invention.
In this modification, sensor retaining member 20 is formed with the hole 73 of the induction part 35 that is used to pass the sensor 30 that is used to detect rotating speed.It should be noted that and to be arranged to detect rotating speed, and this hole 73 is not provided by nonmagnetic substance.
Figure 18 is used to detect the sensor of rotating speed and the skeleton view of sensor retaining member according to the hub unit that is used for driving wheel of the modification of eighth embodiment of the invention.
In this modification, the sensor 30 that is used to detect rotating speed is provided with flange 30a on its periphery, and this flange 30a is engaged in the inboard of tubular sensor retaining member 20.
Similarly, flange 30a is formed with protuberance 71, and each protuberance 71 all has basic arc, and sensor retaining member 20 is formed with recess 72, and each recess 72 all has basic arc.Near recess 72, be formed with and be used to carry out the fixing sharp concave part 72a of ratchet.
The result is, when the protuberance 71 of flange 30a is engaged in the recess 72 of sensor retaining member 20 and flange 30a and sensor retaining member 20 when relatively rotating with respect to each other, protuberance 71 is engaged among the sharp concave part 72a as ratchet, cooperates and fixes thereby make protuberance 71 with basic arc and sharp concave part 72a enter ratchet.
As mentioned above, in the present embodiment, cooperate and fix owing to the protuberance 71 with basic arc and sharp concave part 72a can enter ratchet each other, so sensor retaining member 20 can have the shape of simplification.In addition, owing to be not the main confining force of elastic force conduct,, be used to detect the sensor 30 of rotating speed and the fixed performance between the sensor retaining member 20 thereby can improve so confining force can not worsen.
Similarly, as Figure 17 A to 17C and shown in Figure 180, except the ratchet auxiliary section, be used to detect the sensor 30 of rotating speed or sensor retaining member 20 can adopt fan-shaped, shown in Figure 17 A to 17C; Can adopt tubular, as shown in figure 18; Also can adopt other shape.
It should be noted that the present invention is not limited to the foregoing description, but can change in every way.
Claims (11)
1. hub unit that is used for driving wheel, wherein:
A track circle in static circle and the rotation circle is that side face has the outer ring of a plurality of outer race tracks within it;
Another track circle in described static circle and the described rotation circle is an inner ring assembly, and this assembly comprises the axle part that is bonded to each other and inner ring and have a plurality of inner race tracks on its outer peripheral face independently;
Described axle part axially is formed with in the inner race track one and be formed with the path stage portion of diameter less than the inner race track part at its axial end portion in the middle part at it; And
Described independently inner ring its outer peripheral face have in the inner race track another and be engaged on the described path stage portion,
Described hub unit comprises:
Be fixed to the sensor retaining member of the static circle of the described hub unit that is used for driving wheel;
By the supporting of this sensor retaining member and towards being fixed to the sensor of described rotation circle with the scrambler that rotates with described rotation circle;
Take out the wire harness or the connector of the detection signal of this sensor from this sensor being used to of stretching out, and
The sensor unit that comprises described sensor and described wire harness or connector,
Wherein:
Described sensor is an active sensor;
The sensor main body of described sensor upwards is elongated in week; And
The electronic component that constitutes the internal wiring of described sensor is arranged in the described sensor main body in circle-shaped or circular-arc mode.
2. the hub unit that is used for driving wheel according to claim 1 is characterized in that described sensor main body is annular.
3. the hub unit that is used for driving wheel according to claim 1 is characterized in that described sensor is an arch.
4. according to each described hub unit that is used for driving wheel in the claim 1 to 3, it is characterized in that, described sensor retaining member have the cylindrical portion on the end that is engaged in described static circle and extend internally from the end of described cylindrical portion diametrically extend radially inwardly part, described sensor main body is arranged on described extending radially inwardly on the part regularly.
5. hub unit that is used for driving wheel, wherein:
A track circle in static circle and the rotation circle is that side face has the outer ring of a plurality of outer race tracks within it;
Another track circle in described static circle and the described rotation circle is an inner ring assembly, and this assembly comprises the axle part that is bonded to each other and inner ring and have a plurality of inner race tracks on its outer peripheral face independently;
Described axle part axially is formed with in the inner race track one and be formed with the path stage portion of diameter less than the inner race track part at its axial end portion in the middle part at it; And
Described independently inner ring its outer peripheral face have in the inner race track another and be engaged on the described path stage portion,
Described hub unit comprises:
Be fixed to the sensor retaining member of the static circle of the described hub unit that is used for driving wheel;
By the supporting of this sensor retaining member and towards being fixed to the sensor of described rotation circle with the scrambler that rotates with described rotation circle;
Take out the wire harness or the connector of the detection signal of this sensor from this sensor being used to of stretching out, and
The sensor unit that comprises described sensor and described wire harness or connector,
Wherein:
Described sensor is an active sensor;
Described outer ring is that static circle and described inner ring are the rotation circles;
Described sensor retaining member have the cylindrical portion on the end that is engaged in described outer ring and extend internally from the end of described cylindrical portion diametrically extend radially inwardly part, the sensor main body of described sensor is arranged on described extending radially inwardly on the part regularly; And
The wire harness of described sensor or connector take out by the axial groove that is formed in the articulated joint.
6. the hub unit that is used for driving wheel according to claim 5 is characterized in that, described sensor and the described sensor retaining member that will be fixed to the upper are by resin molded formation one.
7. the hub unit that is used for driving wheel according to claim 5 is characterized in that, described sensor press fit and be fixed on the described sensor retaining member and form one.
8. the hub unit that is used for driving wheel according to claim 5 is characterized in that, is provided with the exhaust opening that is used for draining in the bottom of described sensor retaining member.
9. the hub unit that is used for driving wheel according to claim 5 is characterized in that, the IC terminal in the described sensor is crooked.
10. the hub unit that is used for driving wheel according to claim 5 is characterized in that, described sensor and described sensor retaining member can be fixed to one another by the ratchet cooperation.
11. the hub unit that is used for driving wheel according to claim 5 is characterized in that described sensor also has accessory body, described accessory body is supported on the described sensor retaining member and is contained in the axial groove in the described articulated joint; And
Described wire harness or connector stretch out from described sensor by described accessory body.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003354022 | 2003-10-14 | ||
| JP354022/2003 | 2003-10-14 | ||
| JP110578/2004 | 2004-04-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1882841A CN1882841A (en) | 2006-12-20 |
| CN100549697C true CN100549697C (en) | 2009-10-14 |
Family
ID=37520215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800340703A Expired - Fee Related CN100549697C (en) | 2003-10-14 | 2004-10-01 | The hub unit that is used for driving wheel |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5251922B2 (en) |
| CN (1) | CN100549697C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5845731B2 (en) * | 2011-08-31 | 2016-01-20 | 株式会社ジェイテクト | Axle bearing device |
| KR102228936B1 (en) * | 2014-08-20 | 2021-03-17 | 현대모비스 주식회사 | Axle assembly making wheel speed measuring precisely |
| US10866257B2 (en) * | 2017-11-21 | 2020-12-15 | Aktiebolaget Skf | Wheel hub bearing provided with a device for measuring the rotational speed |
| CN108535510A (en) * | 2018-05-29 | 2018-09-14 | 安徽大明汽车零部件有限公司 | A kind of wheel hub monitoring rotating speed |
| CN109774373A (en) * | 2019-01-31 | 2019-05-21 | 上海蔚来汽车有限公司 | Protection end cap, vehicle wheel component and the automobile of automobile wheel speed sensor |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3811581B2 (en) * | 1999-02-02 | 2006-08-23 | 株式会社ジェイテクト | Rotation speed detector |
| JP3857453B2 (en) * | 1999-02-02 | 2006-12-13 | 株式会社ジェイテクト | Rotation speed detector |
| JP2000221202A (en) * | 1999-02-02 | 2000-08-11 | Koyo Seiko Co Ltd | Apparatus for detecting rotational speed |
| JP2001315501A (en) * | 2000-05-08 | 2001-11-13 | Ntn Corp | Wheel bearing device |
| JP2001349899A (en) * | 2000-06-06 | 2001-12-21 | Nsk Ltd | Roller bearing unit with rotational speed detector |
| JP2002214245A (en) * | 2001-01-16 | 2002-07-31 | Nsk Ltd | Anti-friction bearing unit with rotational speed detecting device |
| JP2002362106A (en) * | 2001-06-08 | 2002-12-18 | Nissan Motor Co Ltd | Wheel supporting structure |
| JP3988576B2 (en) * | 2002-08-09 | 2007-10-10 | 株式会社ジェイテクト | Rolling bearing device |
-
2004
- 2004-10-01 CN CNB2004800340703A patent/CN100549697C/en not_active Expired - Fee Related
-
2010
- 2010-05-21 JP JP2010117444A patent/JP5251922B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010235115A (en) | 2010-10-21 |
| CN1882841A (en) | 2006-12-20 |
| JP5251922B2 (en) | 2013-07-31 |
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