JP5536466B2 - Throttle device - Google Patents

Description

  The present invention relates to a throttle device in which a vehicle engine is controlled based on an operation angle of a throttle operation means.

  In recent motorcycles, the rotation angle of the throttle grip is detected by a throttle opening sensor such as a potentiometer, and the detected value is sent as an electrical signal to an electronic control device mounted on the motorcycle. Has become popular. The electronic control unit performs a predetermined calculation based on the detection signal, and the ignition timing of the engine or the opening / closing of the exhaust valve is controlled based on the calculation result.

  For example, Patent Document 1 discloses a throttle device having the above configuration. Such a throttle device includes a roller that can rotate in conjunction with a throttle grip (throttle operating means), and a rotating body formed with teeth (driven gear) that mesh with teeth (gear) formed on the outer peripheral surface of the roller, It is mainly composed of a magnet integrally formed on the rotating body and an angle sensor that detects a change angle of the magnetic force of the magnet and detects an operation angle of the throttle grip.

  According to this throttle device, when the throttle grip is operated and rotated, the roller rotates in conjunction with it, and the rotating body rotates with the gear engaged therewith. By detecting the rotation angle of the rotating body with the angle sensor, the operation angle of the throttle grip is known, so that an electric signal corresponding to the operation angle is sent to the ECU of the vehicle and the engine output control is performed. It has become.

Japanese Patent Laying-Open No. 2005-41259

  However, in the above-described conventional throttle device, the roller and the rotating body are interlocked via a gear, and a play of a predetermined size (clearance between gear crests) is required between the meshed gears. There is a possibility that the rotating body repeatedly displaces by a small amount with respect to the roller by the amount of play of the gear due to vibration caused by driving the engine, vibration during driving, etc., and the angle sensor may detect the displacement of the minute size. It was. In this case, there is a possibility that the operating angle of the throttle operating means may be erroneously detected because the angle sensor detects a minute dimension displacement due to the engagement of the gears regardless of the operation of the throttle operating means.

  The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a throttle device that can detect the operation angle of the throttle operation means with high accuracy even when vehicle vibration is applied.

According to the first aspect of the present invention, there is provided a throttle operating means that can be operated by a driver, an interlocking member that is rotatable in conjunction with the throttle operating means and has a gear formed in the circumferential direction, and the interlocking A driven gear that meshes with the gear of the member is formed and can be rotated in conjunction with the interlocking member, and the driven member formed integrally with the magnet, and a change in magnetic force from the magnet is detected, and the throttle And a detecting unit capable of detecting an operating angle of the operating unit, wherein the magnet is controlled by the magnetic force of the magnet in a throttle device in which a vehicle engine is controlled based on the operating angle of the throttle operating unit detected by the detecting unit. It is characterized by comprising an adsorbing member made of a magnetic material that adsorbs and fixes the driven member .

  According to a second aspect of the present invention, in the throttle device according to the first aspect of the present invention, the throttle device includes a case that houses the interlocking member, the driven member, and the detection unit, and the suction member is one surface of the interlocking member and the driven member. It is characterized by being fixed in the case while covering.

  According to a third aspect of the present invention, in the throttle device according to the second aspect, the suction member supports one end of the rotation shaft of the driven member.

  According to a fourth aspect of the present invention, in the throttle device according to any one of the first to third aspects, the adsorbing member is made of plate-shaped iron or alloy steel.

According to the first aspect of the present invention, the magnet is attracted to the attracting member when the throttle operating means is not operated because the attracting member made of a magnetic material that attracts the magnet by the magnetic force of the magnet and fixes the driven member is provided. Thus, the driven member can be fixed, and the operating angle of the throttle operating means can be detected with high accuracy even when the vehicle is vibrated.

  According to the second aspect of the present invention, the housing includes the case that accommodates the interlocking member, the driven member, and the detecting means, and the adsorption member is fixed in the case while covering one surface of the interlocking member and the driven member. Therefore, the adsorption member can have both a function as a cover that covers the interlocking member and the driven member and a function of fixing the driven member when the throttle operation means is not operated.

  According to the invention of claim 3, since the adsorption member supports one end of the rotation shaft of the driven member, the adsorption member functions as a receiving member for the rotation shaft of the driven member, and the cover that covers the interlocking member and the driven member. And the function of fixing the driven member in a state where the throttle operation means is not operated.

  According to the invention of claim 4, since the adsorbing member is made of plate-like iron or alloy steel, it is possible to fix the driven member in a state where the operation of the throttle operating means is not performed reliably and inexpensively. In particular, when an adsorption member made of plate-like iron or alloy steel is disposed in the case, in addition to fixing the driven member in a state where there is no operation of the throttle operation means, the strength of the case can be improved, It can have a function as a reinforcing material.

The perspective view which shows the external appearance of the throttle apparatus which concerns on embodiment of this invention Plan view showing the throttle device Sectional view taken along line III-III in FIG. Part IV enlarged view in FIG. Sectional view taken along line VV in FIG. Sectional view taken along line VI-VI in FIG. Exploded perspective view showing the throttle device The perspective view which shows the internal structure (state before attaching an adsorption member) in the throttle device The perspective view which shows the internal structure (state which attached the adsorption member) in the throttle device

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The throttle device according to this embodiment is for detecting the rotation angle of a throttle grip attached to the handlebar of a two-wheeled vehicle and sending the detection signal to an electronic control device such as an ECU mounted on the two-wheeled vehicle. 9, the throttle grip G as the throttle operating means, the throttle pipe 1, the case C disposed in the vicinity of the throttle grip G in the handlebar H, the interlocking member 2, the driven member 3, and the detecting means As the angle sensor 5 and the suction member 10.

  The throttle grip G is rotatably disposed with the throttle pipe 1 on the front end side of the handle bar H, and can be rotated while being held by the driver. As shown in FIG. 3, the handle bar H has a return spring 7 and a receiving member 8 fixed to the handle bar H side, and a rotating shaft 9 that can rotate with the throttle grip G and the throttle pipe 1. The return spring 7 has one end fixed to the housing member 8 and the other end fixed to the rotating shaft 9. As a result, the throttle grip G and the throttle pipe 1 are constantly urged toward the return side (direction to return to the initial position).

  The throttle pipe 1 is made of a resin member formed in a cylindrical shape, and is fixed to the inner peripheral surface of a throttle grip G attached to the tip of a handlebar H of a two-wheeled vehicle (vehicle), and extends along the outer peripheral surface of the handlebar H. And can be rotated together with the throttle grip G. That is, as the driver grips the throttle grip G and rotates it in the circumferential direction of the handle bar H against the urging force of the return spring 7, the throttle pipe 1 fixed to the inner peripheral surface of the handle bar H is also fixed to the handle bar. It can be rotated by the same angle on the outer peripheral side of H.

  The case C is composed of a pair of halved resin parts for housing the interlocking member 2, the driven member 3, and the angle sensor 5 (detecting means), and is attached to the handle bar H as shown in FIG. When the case C, which is a half-shaped part, is assembled with the case Ca interposed therebetween and tightened with a bolt B, the handle bar H is fixed to the distal end side. In the case C, the interlocking member 2 and the driven member 3 are rotatable, and the substrate 6 on which the angle sensor 5 is formed is fixed.

  The interlocking member 2 is rotatable in conjunction with the throttle grip G (throttle operating means) and has a gear (tooth surface shape) formed in the circumferential direction, as shown in FIGS. In addition, it has a convex portion 2 a that fits into a concave portion 1 a formed in the throttle pipe 1. Thus, the interlocking member 2 can be rotated in conjunction with the rotation of the throttle grip G and the throttle pipe 1 by being assembled with the convex portion 2a fitted to the concave portion 1a.

  The driven member 3 includes a driven gear that meshes with the gear (tooth surface shape) of the interlocking member 2 on the outer peripheral surface thereof, and a gear that is rotatable about the rotation axis L in conjunction with the interlocking member 2. Become. The driven member 3 is a gear having a smaller diameter than the interlocking member 2, and can be rotated at a larger rotation angle than the interlocking member 2 when the interlocking member 2 rotates as the throttle grip G rotates. It has become.

  Further, the driven member 3 is integrally formed with a magnet 4 on the rotation axis L side, and the magnet 4 can be rotated together with the driven member 3. That is, the magnet 4 is fixed and integrated at the center of the driven member 3, and the rotation axis L is fixed through the center of the magnet 4. The driven member 3 and the magnet 4 may be integrated by any method such as insert molding, adhesive bonding, and press fitting.

  A substrate 6 on which a predetermined electric circuit is formed is fixed at a position facing the magnet 4, and angle sensors 5 are formed on the front and back surfaces of the substrate 6, respectively. The angle sensor 5 can detect a change in magnetic force from the magnet 4 and detect an operation angle of the throttle grip G (throttle operation means). That is, when the driven member 3 and the magnet 4 rotate with the rotation of the throttle grip G, the throttle pipe 1 and the interlocking member 2, the output signal of the angle sensor 5 increases or decreases due to the change in magnetic force (magnetic field) generated from the magnet 4. The rotation angle of the throttle grip G can be detected based on the output signal. The detection signal is sent to the ECU of the two-wheeled vehicle via a cord extending from the board 6 and the engine is controlled based on the detection signal (output control based on the rotation angles of the throttle grip G and the throttle pipe 1). ) Is performed.

  According to the present embodiment, the angle sensors 5 are provided on the front and back surfaces of the substrate 6, respectively, and two output signals are output from each angle sensor 5. As a result, the detection signal constitutes a double signal system, and the output voltage changes in opposite directions. When one of the angle sensors 5 or the wiring is broken, the output from the angle sensor 5 Since the voltage is reduced and the sum of the output signals is different, it can be recognized that there is a problem in the one angle sensor 5 or the wiring. Even in this case, various controls are performed based on the output from the other angle sensor 5, and safety can be ensured.

  Thus, according to the present throttle device, the rotation angle of the throttle grip G and the throttle pipe 1 can be detected by the angle sensor 5 in a non-contact manner, so that the durability of the device is higher than that having a mechanical mechanism. Can be improved. Further, the angle sensor 5 is molded with a predetermined resin together with the substrate 6, and the waterproof effect on the angle sensor 5 is improved. The magnet 4 may be a permanent magnet or a magnet that can generate another magnetic field (for example, a plastic magnet).

  The attracting member 10 is made of a magnetic material that attracts the magnet 4 by the magnetic force of the magnet 4, and in the present embodiment, plate-like iron or alloy steel (stainless steel called SUS (SUS430, etc.), etc. ). Specifically, as shown in FIG. 9, the adsorbing member 10 covers the inside of the case C while covering one surface of the interlocking member 2 and the driven member 3 (the surface opposite to the surface facing the angle sensor 5). The magnet 4 facing from one surface of the driven member 3 is assembled to be attracted to the attracting member 10 by its magnetic force.

  Further, as shown in FIGS. 3 and 4, the suction member 10 is fixed to the intermediate case Ca with a screw n in a state where the interlocking member 2 and the driven member 3 are sandwiched, and the rotation axis L of the driven member 3 is fixed. One end is supported. That is, as shown in FIG. 4, a hole 10 a is formed in a predetermined portion of the suction member 10, and one end of the rotation shaft L is inserted into the hole 10 a and is rotatably supported.

  With the above configuration, when the throttle grip G is not rotated, the driven member 3 is fixed by attracting the magnet 4 to the attracting member 10, and when the throttle grip G is rotated, the driven member 3 is driven by the magnetic force of the magnet 4. The driven member 3 rotates together with the magnet 4 against the attracting force, the change in the magnetic force from the magnet 4 is detected by the angle sensor 5, and the operating angle of the throttle grip G (throttle operating means) is detected. Become.

  According to this embodiment, since the attracting member 10 made of a magnetic material that attracts the magnet 4 by the magnetic force of the magnet 4 is provided, the magnet 4 is attracted to the attracting member 10 in a state where the throttle grip G (throttle operating means) is not operated. The driven member 3 can be fixed by being attracted to the vehicle, and the operating angle of the throttle grip G (throttle operating means) can be detected with high accuracy even when vibrations generated during engine driving or traveling of the motorcycle (vehicle) are applied. it can. Although the attracting force of the magnet 4 can fix the driven member 3, it is extremely small as compared with the rotational force applied when the throttle grip G is operated. Therefore, the operability of the throttle grip G is not adversely affected. .

  In addition, the case C includes the interlocking member 2, the driven member 3, and the angle sensor 5 (detection means), and the suction member 10 covers the one surface of the interlocking member 2 and the driven member 3. Since the suction member 10 has a function as a cover that covers one surface of the interlocking member 2 and the driven member 3, and the driven member 3 in a state in which the throttle grip G (throttle operating means) is not operated. It can have the function to fix.

  Further, since the suction member 10 is supported at one end of the rotation shaft L of the driven member 3, the suction member 10 functions as a receiving member for the rotation shaft L of the driven member 3, and the interlocking member 2 and the driven member 3. A function as a cover to cover and a function of fixing the driven member 3 in a state where the throttle grip G (throttle operating means) is not operated can be provided. Furthermore, since the adsorbing member 10 is made of plate-like iron or alloy steel, the driven member 3 can be fixed in a state where the throttle grip G (throttle operating means) is not operated reliably and inexpensively. In particular, in the present embodiment, since the suction member 10 made of plate-like iron or alloy steel is disposed in the case C, the driven member 3 in a state where the throttle grip G (throttle operating means) is not operated. In addition to fixing, the strength of the case C can be improved, and the function as a reinforcing material can be provided.

  Although the present embodiment has been described above, the present invention is not limited to this. For example, the return spring 7 is disposed in the case C, or the angle sensor 5 as the detection means is provided on one side of the substrate 6. It is good also as what was formed only in this surface. In this embodiment, the throttle grip G is used as a throttle operating means that can be operated by the driver. However, the throttle grip G is applied to a throttle device having a lever-type throttle operating means that the driver can rotate with the thumb or index finger. You may make it do. Furthermore, in this embodiment, it is assumed that it is attached to the handlebar of the two-wheeled vehicle, but it may be attached to another vehicle (for example, ATV, snowmobile, etc.) having the handlebar.

As long as the throttle device has an attracting member made of a magnetic material that attracts the magnet by the magnetic force of the magnet and fixes the driven member, the throttle device can be applied to a device with a different external shape or with another function added. Can do.

Reference Signs List 1 throttle pipe 2 interlocking member 3 driven member 4 magnet 5 angle sensor (detection means)
6 Substrate 7 Return spring 8 Housing member 9 Rotating shaft 10 Suction member G Handle grip (throttle operating means)
H Handlebar C Case L Rotating shaft

Claims (4)

A throttle operating means operable by the driver;
An interlocking member that is rotatable in conjunction with the throttle operating means and has a gear formed in the circumferential direction;
A driven gear that meshes with the gear of the interlocking member is formed to be rotatable in conjunction with the interlocking member, and a driven member in which a magnet is integrally formed,
Detecting means capable of detecting a change in magnetic force from the magnet and detecting an operating angle of the throttle operating means;
A throttle device in which an engine of a vehicle is controlled based on an operation angle of the throttle operation means detected by the detection means,
A throttle device comprising an attracting member made of a magnetic material that attracts the magnet by the magnetic force of the magnet and fixes the driven member .   2. The housing according to claim 1, further comprising a case that accommodates the interlocking member, the driven member, and the detecting means, and the adsorption member is fixed in the case while covering one surface of the interlocking member and the driven member. The throttle device according to 1.   The throttle device according to claim 2, wherein the suction member supports one end of a rotation shaft of the driven member.   The throttle device according to any one of claims 1 to 3, wherein the adsorption member is made of plate-like iron or alloy steel.

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