JP2016049905A - Fitting structure of rotation detected object for wheel rotational speed sensor, and three-wheeled vehicle equipped with fitting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To utilize a wheel rotational speed sensor of such a type that a detected object is rotated in linkage with a wheel in a three-wheeled vehicle.SOLUTION: An automatic three-wheeled vehicle, which has single wheel as a front wheel and two wheels as a rear wheel, is equipped with: a wheel rotational speed sensor 10 which has a rotary detected object 12 which is rotated in linkage of any one of the wheels and a non-rotation sensor 11 which detects a rotation amount of the rotary detected object 12, and detects a rotational speed of the wheel from the detected rotation amount; a drive shaft for driving the rear wheels; a rotor 5 which is rotated in linkage with the drive shaft; a rotation transmission connector 16 which transmits rotation of the rotor 5 to the rotary detected object 12 of the wheel rotational speed sensor 10; and a sensor support member 17 which supports a non-rotation sensor 11 of the wheel rotational speed sensor 10 in a non-rotational state.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a mounting structure for a rotating body to be detected for a wheel rotation speed sensor and a three-wheeled vehicle including the mounting structure.

  Motorcycles are being remodeled (customized) into tricycles (trikes). In addition, a motorcycle equipped with an ABS (anti-lock brake system) is remodeled into a motor tricycle.

  The ABS is a device that reduces the occurrence of sliding due to a wheel locking during sudden braking or braking operation on a low friction road, and includes a wheel rotation speed sensor for detecting the rotation speed of the wheel. A wheel rotation speed sensor is a device that detects the rotation speed of a wheel. For example, the wheel rotation speed sensor includes a wheel rotation speed sensor having a bearing (rotating object) with a built-in magnet and encoder, and is attached to a drive shaft (output shaft) of a motorcycle. And rotate (for example, see Patent Document 1).

  An example of the wheel rotational speed sensor for the conventional motorcycle is shown. A sensor portion is provided on the axle shaft held by the front fork so as not to rotate, and a sensing rotor is provided at a position facing the sensor portion of the wheel side member rotatably supported on the axle shaft. The rotational speed of the wheel is detected by a pair of a sensing rotor and a sensor unit that rotate together, and the vehicle speed is displayed on a speedometer based on the rotational speed.

JP 2001-337097 A

  However, when a motorcycle is remodeled into a motor tricycle, there are cases where the ABS mounted on the motorcycle cannot be used in the motor tricycle. That is, a type in which the sensing side is a stator, the detected object rotates as a rotor (for example, a sensing rotor), and the rotational speed of the wheel and thus the vehicle speed is detected from the amount of rotation of the rotated detected object, such as the motorcycle described above. The wheel rotation speed sensor can attach and rotate the rotating object to the motorcycle, such as an axle shaft or a cantilever (swing arm) rear wheel. It is a difficult structure to attach as it is to a motorized tricycle with wheels connected.

  Accordingly, an object of the present invention is to provide a mounting structure for a rotationally-detected object for a wheel rotational speed sensor, in which a wheel rotational speed sensor of a type that rotates the detected object in conjunction with a wheel can be used in a three-wheeled vehicle. And

In order to solve such a problem, the present invention is an automatic tricycle with one front wheel and two rear wheels,
A wheel rotation speed that has a rotation detection object that rotates in conjunction with any of the wheels and a non-rotation sensor that detects the rotation amount of the rotation detection object, and detects the rotation speed of the wheel from the detected rotation amount A sensor,
A drive shaft for driving the rear wheel;
A rotating body that rotates in conjunction with the drive shaft;
A rotation transmission connector for transmitting the rotation of the rotating body to a rotation detected body of the wheel rotation speed sensor;
A sensor support member that supports the non-rotation sensor of the wheel rotation speed sensor in a non-rotating state;
It is characterized by providing.

  For motor tricycles that drive the left and right rear wheels with drive shafts, the drive shafts may be equipped with a differential gear. Cannot be placed coaxially. In this regard, in the above-described three-wheeled motor vehicle according to the present invention, the rotation amount is transmitted to the rotation detected object by using the rotating body interlocking with the drive shaft and the rotation transmission connector that transmits the rotation of the rotating body. It is possible. Therefore, it is possible to detect the rotational speed of the rear wheel of the tricycle using a wheel rotational speed sensor having a non-rotation sensor and a rotational detection object. According to this, for example, a wheel rotation speed sensor of a type having a rotation detection object applicable to an axle shaft of a motorcycle or a cantilever (swing arm) type rear wheel can be used as it is in a three-wheeled vehicle. It becomes.

  The rotating body may include a sprocket that transmits power to the drive shaft.

  Further, the motor tricycle in this case may include a sealed casing that covers at least the sprocket and a belt or chain provided between the sprocket and the drive shaft.

  Furthermore, it is preferable that the tricycle includes a fixing member that fixes the sensor support member to the casing.

  In the tricycle, an off-the-shelf product may be used as the wheel rotation speed sensor.

In addition, the mounting structure of the rotationally-detected body for the wheel rotational speed sensor according to the present invention includes a rotationally-detected body that rotates in conjunction with any of the wheels with respect to an automatic tricycle having one front wheel and two rear wheels. A wheel rotation speed sensor having a structure that can be attached,
A non-rotation sensor for detecting the amount of rotation of the rotating object, which constitutes the wheel rotation speed sensor;
A rotating body interlocking with the drive shaft of the rear wheel;
A rotation transmission connector for transmitting the rotation of the rotating body to the rotation detected body of the wheel rotation speed sensor;
A sensor support member that supports the non-rotation sensor of the wheel rotation speed sensor;
It is characterized by providing.

  ADVANTAGE OF THE INVENTION According to this invention, a wheel rotational speed sensor of the type which rotates a to-be-detected body in response to a wheel can be utilized now in a three-wheeled motor vehicle.

It is the schematic from back which shows the example of composition of the frame of a motor tricycle of the state where the cowl etc. were removed, a rear wheel, etc. It is a figure which shows the internal structure of the drive unit seen from the left side of the tricycle. It is a figure which shows the structural example of a rotation transmission connector, a sensor support member, and the member for fixing. It is a perspective view which shows the mode in the middle of attaching the wheel rotational speed sensor etc. to the casing shaft. It is a figure which shows a mode that the rotation transmission connector, the sensor support member, and the wheel rotational speed sensor were attached to the sprocket shaft.

  Hereinafter, the configuration of the present invention will be described in detail based on an example of an embodiment shown in the drawings.

  FIG. 1 shows a configuration example of a frame, wheels and the like of the tricycle 1. This motor tricycle (indicated by reference numeral 1 in FIG. 1) has a front wheel (not shown) as one wheel and a rear wheel (in FIG. 1, the left rear wheel is indicated by reference numeral 3L and the right rear wheel is indicated by reference numeral 3R). It is a car. In addition to these front wheels and rear wheels 3L and 3R, the motor tricycle 1 includes a frame 4, suspension members 5L and 5R, a shock absorber 7, and the like. However, these members are only illustrated in FIG. 1, and in the present specification, detailed descriptions are omitted except for a brief description of the following rear wheels 3L and 3R and the frame 4.

  The rear wheels 3L and 3R are attached to the left and right sides of the frame 4 constituting the motor tricycle 1 via suspension members 5L and 5R (see FIG. 1). Although not particularly illustrated, the rear wheels 3L and 3R are drive wheels in the tricycle 1 of the present embodiment.

  The frame 4 is a rear-side subframe connected to a main frame (not shown) of the tricycle 1 (hereinafter also simply referred to as a frame). Left and right suspension members 5L and 5R, shock absorbers 7 and the like are attached to the frame 4 (see FIG. 1).

  Next, an outline of the drive unit 140 in the three-wheeled motor vehicle 1 will be shown, and then a structure for mounting a rotation detection body for a wheel rotation speed sensor will be described (see FIG. 2 and the like).

<Drive unit 140>
The drive unit 140 includes a sprocket 15, a power transmission chain, a driven sprocket 146, a casing 148, a transmission wheel 50, and the like including a swing arm (specific illustration is omitted), a differential gear 142, and a drive shaft 14.

  The differential gear 142 is a power transmission device that is disposed between the left and right drive shafts 14 and distributes power according to the difference in motion between the left rear wheel 3L and the right rear wheel 3R (see FIG. 2). According to the differential gear 142, the same torque can be distributed to the left and right from the power source while transmitting the same torque from the power source while absorbing the difference between the inner wheels generated when the motorcycle 3 turns a curve. The rear wheel 3R can be distributed and transmitted to different rotational speeds. A driven sprocket 146 is provided around the differential gear 142 (see FIG. 2).

  The sprocket 15 is disposed in front of the drive shaft 14 so as to rotate around a sprocket shaft 59 disposed in parallel with the drive shaft 14 (see FIG. 2). A power transmission chain 144 is wound around the sprocket 15 and the driven sprocket 146 so that when one of them rotates, it is transmitted to the other. Instead of the power transmission chain, a belt drive or a belt & chain drive can be used. The sprocket 15 transmits power to the differential gear 142 or the drive shaft 14 via the power transmission chain 144 and the driven sprocket 146 described above.

  The sprocket 15 functions as a rotating body that transmits the power generated by the engine to the drive shaft 14. However, when the engine brake is operated, the sprocket 15 receives a force rotating from the side of the drive shaft 14. Functions to transmit to the engine side. In either case, the sprocket 15 rotates in conjunction with the drive shaft 14.

  Further, when the sprocket 15 is interposed in the power transmission mechanism of the power source (engine) in this way, a reduction ratio (final reduction ratio) corresponding to the ratio of the number of teeth of the sprocket 15 and the driven sprocket 146. Can be set. Therefore, it is possible to make a setting to improve the power performance at the time of starting.

  The casing (housing) 48 constitutes a sealed housing of the drive unit 140 (see FIGS. 1 and 2). The casing 148 of the present embodiment is made of a cast material in which an aluminum material having a high degree of freedom that is lightweight and excellent in durability and is flexible is poured into a mold. The sprocket 15, the power transmission chain 144, the driven sprocket 146, and the differential gear 142 are provided in the casing 148. Therefore, in these sealed drive systems, a wet oil specification that is possible in an integral structure can be used instead of a grease specification in an open structure.

  The transmission wheel 50 is attached to the sprocket shaft 59 outside the casing 148 and is provided coaxially with the sprocket 15 (see FIGS. 1 and 2). Although not shown, a belt or the like for transmitting engine power is wound around the transmission wheel 50.

<Mounting structure of rotating object for wheel rotation speed sensor>
The tricycle 1 of the present embodiment has an attachment structure that enables attachment of a wheel rotation speed sensor 10 of a type having a rotation detection object (see FIG. 4 and the like).

  The wheel rotation speed sensor 10 is a device with a rotor for detecting the number of rotations of the wheel. In the present embodiment, as such a wheel rotation speed sensor 10, a sensor used in an existing motorcycle is used. The outline of such a wheel rotation speed sensor 10 is exemplified as follows.

  That is, although not shown, the wheel rotation speed sensor 10 includes a non-rotation sensor 11 having a ball bearing, an encoder, a clip connector, a screw, a nut, and the like, and a rotation detected body 12. An output cord 13 is connected to the non-rotation sensor 11 in a state that does not prevent the rotation of the rotation detection object 12 (see FIG. 4). The wheel rotation speed sensor 10 detects the rotation speed of the wheel based on the rotation amount of the rotation detection target 12 that rotates relative to the non-rotation sensor 11.

  An example of the mounting structure of such a wheel rotation speed sensor 10 is shown below. The tricycle 1 of this embodiment includes a rotation transmission connector 16, a sensor support member 17, and a fixing member 18 (see FIG. 3 and the like).

  The rotation transmission connector 16 is a member that transmits the rotation of the sprocket 15 to the rotation detected body 12 of the wheel rotation speed sensor 10. The rotation transmission connector 16 of this embodiment includes a sensor-side sleeve member 16A having a large-diameter sleeve into which the rotation detection body 12 of the wheel rotation speed sensor 10 is fitted, and a sprocket having, for example, a recess to which one end of the sprocket shaft 59 is attached. And a shaft mounting member 16B (see FIG. 3 and the like).

  The sensor-side sleeve member 16A and the sprocket shaft mounting member 16B may be integrated from the beginning, or may be detachable using one male screw and the other female screw as in this embodiment. Also good. The sensor-side sleeve member 16A and the sprocket shaft mounting member 16B of the present embodiment are integrated on the same axis by being screwed together. According to the rotation transmission connector 16 as described above, the sprocket shaft 59 and the rotation detection object 12 can be connected on the same axis and rotated integrally.

  The sensor support member 17 is a member that supports the non-rotation sensor 11 that is a sensor portion of the wheel rotation speed sensor 10 without rotating. The sensor support member 17 of the present embodiment is bolt-shaped, and includes an insertion portion 17B that is inserted into the hollow portion of the non-rotation sensor 11 and the rotation detection object 12, and a fixed portion 17C that is fixed by the fixing member 18. The flange portion 17A is formed at the end of the insertion portion 17B, and the rotation prevention portion 17D is formed in a portion of the insertion portion 17B near the fixed portion 17C (see FIG. 3).

  The flange portion 17 </ b> A has a larger diameter than the outer diameter of the insertion portion 17 </ b> B and the inner diameter of the hollow portion of the rotating body to be detected 12, and comes into contact with the inner surface of the rotating body to be detected 12. Prevent omissions. A male screw is cut in the fixed portion 17C, and a nut 83 of the fixing member 18 described later is screwed into the fixed portion 17C. The non-rotating portion 17D is, for example, a D-cut with a part of the circumference being a flat cutout, or a non-circular section with a two-sided cross-section so that the opposite side is also a flat cutout. It engages with the second bracket 82 having the joint hole 82A. A stepped shape is formed between the insertion portion 17B and the fixed portion 17C.

  The fixing member 18 is a member for fixing the sensor support member 17 to the casing 148. A specific example of such a fixing member 18 is not particularly limited, but in this embodiment, the fixing member 18 is configured by the first bracket 81, the second bracket 82, the nut 83, and the like (FIGS. 3 and 4). Etc.).

  The first bracket 81 is fixed by being screwed to the casing 148 with a plurality of screws (see FIG. 4 and the like). The second bracket 82 is a member having an engagement hole 82A with which the rotation preventing portion 17D of the sensor support member 17 is engaged (see FIG. 3 and the like), and is fixed to the first bracket 81 with screws, bolts, nuts, or the like ( (See FIG. 4). When the second bracket 82 is fixed to the first bracket 81, the first bracket 81 and the second bracket 82 have a channel shape (U-shape) as a whole. Between the first bracket 81 and the second bracket 82, the sensor side sleeve member 16A, the non-rotation sensor 11, and the rotation detected body 12 are arranged (see FIG. 5).

  The nut 83 is screwed into the fixed portion 17 </ b> C of the sensor support member 17. By screwing and tightening the nut 83, the second bracket 82 can be sandwiched between the stepped shape between the insertion portion 17 </ b> B and the fixed portion 17 </ b> C and the nut 83. A washer 84 is disposed between the nut 83 and the second bracket 82 as necessary (see FIG. 3 and the like).

  Although not shown in FIG. 4 and the like, the sprocket shaft mounting member 16B and the like of the rotation transmission connector 16 may be supported by a bearing. This bearing is denoted by reference numeral 19 in FIG.

  According to the mounting structure of the rotationally-detected object 12 for the wheel rotational speed sensor 10 described above, the sprocket 15 interlocking with the drive shaft 14 and the rotation transmission connector 16 for transmitting the rotation of the sprocket 15 via the sprocket shaft 59 are provided. The amount of rotation is transmitted to the rotation detection object 12 by using it. Therefore, the rotational speed of the rear wheel of the three-wheeled motor vehicle can be detected using the wheel rotational speed sensor 10 having the non-rotation sensor 11 and the rotation detection object 12. According to this, for example, the wheel rotational speed sensor 10 including the rotation detected body 12 applicable to a cantilever (swing arm) type rear wheel of a motorcycle can be used as it is in a three-wheeled vehicle. Therefore, for example, when a motorcycle is remodeled (customized) into a three-wheeled motor vehicle, the installed ABS wheel rotation speed sensor 10 can be used as it is.

  By the way, as in the tricycle 1 of this embodiment, a sprocket 15 is interposed in the power transmission mechanism, and a reduction ratio (final reduction ratio) corresponding to the ratio of the number of teeth of the sprocket 15 and the driven sprocket 146 is set. In this case, there is a difference between the rotation amount of the drive shaft 14 and the rotation amounts of the sprocket 15 and the sprocket shaft 59. However, since the difference (ratio where the difference occurs) at this time is known in advance, the rotational speed of the drive shaft 14 and the rear wheel 3 can be obtained by performing a predetermined calculation on the detection value by the non-rotation sensor 11. .

  The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited thereto, and various modifications can be made without departing from the scope of the present invention. For example, although the sprocket 15 and the sprocket shaft 59 are shown as rotating bodies that rotate in conjunction with the drive shaft 14 in the above-described embodiment, this is only a preferred example. In short, this is a preferred example of the mounting structure of the rotationally-detected object 12 using a part of the power transmission mechanism (drive system), but in addition to this, sensing other than the drive system pulled out from the drive shaft 14 The rotating system was pulled out from either of the rotating systems to rotate the rotating object 12 of the wheel rotation speed sensor 10 such as a rotating body for rotation or a mechanism for rotating the rotating object to be detected by a belt or the like hung on the drive shaft 14. A mechanism can be used.

  The present invention is suitable for application to an auto tricycle having one front wheel and two rear wheels.

DESCRIPTION OF SYMBOLS 1 ... Auto tricycle 3 ... Rear wheel 3L ... Left rear wheel 3R ... Right rear wheel 10 ... Wheel rotational speed sensor 11 ... Non-rotation sensor 12 ... Rotation detected body 14 ... Drive shaft 15 ... Sprocket (rotary body interlocking with drive shaft) )
16 ... Rotation transmission connector 17 ... Sensor support member 18 ... Fixing member 148 ... Casing

Claims (6)

An auto tricycle with one front wheel and two rear wheels,
A wheel rotation speed that has a rotation detection object that rotates in conjunction with any of the wheels and a non-rotation sensor that detects the rotation amount of the rotation detection object, and detects the rotation speed of the wheel from the detected rotation amount A sensor,
A drive shaft for driving the rear wheel;
A rotating body that rotates in conjunction with the drive shaft;
A rotation transmission connector for transmitting the rotation of the rotating body to a rotation detected body of the wheel rotation speed sensor;
A sensor support member that supports the non-rotation sensor of the wheel rotation speed sensor in a non-rotating state;
An auto tricycle characterized by comprising:   The motorcycle according to claim 1, wherein the rotating body includes a sprocket that transmits power to the drive shaft.   The motor tricycle according to claim 2, further comprising a hermetically sealed casing covering at least the sprocket and a belt or chain provided between the sprocket and the drive shaft.   The motor tricycle according to claim 3, further comprising a fixing member that fixes the sensor support member to the casing.   The motor tricycle according to any one of claims 1 to 4, wherein an off-the-shelf product is used as the wheel rotation speed sensor. A structure that allows attachment of a wheel rotation speed sensor having a rotation detected body that rotates in conjunction with one of the wheels to an auto tricycle with one front wheel and two rear wheels,
A non-rotation sensor for detecting the amount of rotation of the rotating object, which constitutes the wheel rotation speed sensor;
A rotating body interlocking with the drive shaft of the rear wheel;
A rotation transmission connector for transmitting the rotation of the rotating body to the rotation detected body of the wheel rotation speed sensor;
A sensor support member that supports the non-rotation sensor of the wheel rotation speed sensor;
A structure for mounting a rotation detection object for a wheel rotation speed sensor.