JP2012137383A - Gear shift position detector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gear shift position detector that detects the neutral gear position and actuates display means of external equipment.SOLUTION: A gear shift position detector 1 is provided with a magnet 5 that turns interlocked with a shift cam 3, which is an object of detection to determine the gear shift position of a saddle-fitted vehicle, and a magnetism detecting unit 6 that is arranged opposite to the magnet 5 and detects the intensity of the magnetic field of the magnet 5 as the magnet 5 turns. The magnetism detecting unit 6 has a first magnetism detecting element 6a that detects a gear shift position and a second magnetism detecting element 6b that detects the neutral gear position. The first magnetism detecting unit 6 outputs a signal S1 corresponding to the rotational angle of the shift cam, and the second magnetism detecting element 6b outputs a switch signal S2 indicating whether or not the gear is in the neutral gear position and controls a display means 9 of external equipment 8 on the basis of the switch signal S2.

Description

  The present invention relates to a shift position detecting device that detects a shift position of a transmission of a vehicle.

  As a conventional shift position detection device, one disclosed in Patent Document 1 is known. The shift position detecting device includes a shift cam that rotates in conjunction with the swing of a shift lever that operates a gear combination of the transmission, and a terminal block that is fixedly opposed to the shift cam so as to detect the rotation angle of the shift cam. And a fixed terminal for grounding and a plurality of contact fixed terminals arranged on the terminal block, and can be interlocked with the shift cam while being connected and integrated with the terminal block while being allowed to rotate, and the shift cam and the terminal An interlocking member interposed between the base, a movable terminal disposed on the interlocking member and in contact with a predetermined contact fixed terminal according to the rotation angle of the shift cam, and the movable terminal connected to the ground fixed terminal and the contact fixed A coil spring that biases toward the terminal side, and is a combination of gears by a shift lever depending on which contact fixed terminal the conductive terminal contacts and conducts. It is intended to detect the position. That is, the shift position can be detected by detecting the rotation angle of the shift cam.

  However, since the shift position detecting device of Patent Document 1 is a contact type in which the contact portion of the movable terminal is in contact with the fixed terminal, the durability of the contact portion is likely to be lowered by repeated use. Further, since detection is performed by mechanical contact, detection at a small rotation angle is impossible. Therefore, the number of position detections is limited, and there is a problem that it is impossible to cope with the need for many position detections.

  In order to solve this problem, the present applicant has provided a shift position detecting device disclosed in Patent Document 2. This shift position detecting device includes a rotating member, a magnet fixed to the rotating member and rotating with the rotation of the rotating member, and a magnet arranged so as to face the magnet and rotating the magnet to increase the strength of the magnetic field of the magnet. It has a magnetic detection unit for detection, is excellent in durability, and can be detected at a continuous rotation angle.

JP 2003-208834 A JP 2009-204567 A

  However, the shift position detecting device described in Patent Document 2 requires a complicated circuit configuration when detecting a neutral position and operating a display unit such as a light source provided in an external device such as a vehicle instrument. Due to the increase, there are problems such as an increase in cost and an increase in the capacity of the apparatus.

  Accordingly, the present invention aims to provide a shift position detector that detects the neutral position and operates the display means of the external device, paying attention to the above-mentioned problems.

  The present invention includes a magnet that rotates in conjunction with a shift cam that determines a shift position of a saddle-type vehicle, and a magnetic detection unit that is disposed opposite to the magnet and detects a change in the magnetic field of the magnet as the magnet rotates. In the shift position detector, the magnetic detection unit detects a shift position based on a change in the magnetic field, and a second magnetic detection detects a shift neutral position based on the change in the magnetic field. The first magnetic detection element outputs a signal corresponding to the rotation angle of the shift cam, and the second magnetic detection element outputs a switch signal indicating whether or not the neutral position is in the neutral position. The display means of the external device is controlled based on the switch signal.

  Moreover, it has a switch means which operates the said display means based on the said switch signal.

  The external device is a vehicle instrument.

  The display means is a light source.

  The magnet disposed opposite to the magnetic detection element covers the first magnetic detection element and the second magnetic detection element, and the rotation center of the magnet and the first magnetic detection element Are arranged on the same straight line.

  According to the present invention, it is possible to provide a shift position detector that can achieve an intended purpose, detects a neutral position, and operates display means of an external device.

1 is a schematic view of a vehicle equipped with a shift position detecting device according to a first embodiment of the present invention. FIG. 3 is a block diagram of the shift position detection device of the embodiment. Sectional drawing of the transmission position detection apparatus of the embodiment. The figure which shows the positional relationship of the magnet and shift position detection apparatus of the embodiment. The figure which shows the output waveform of the signal of the transmission position detection apparatus of the embodiment.

  Embodiments of the present invention will be described with reference to the accompanying drawings. The shift position detector 1 of the present invention is provided on a shift cam 3 (shaft), which is a detected body that is rotated by an operation of a shift pedal 2 of a vehicle (for example, a two-wheeled vehicle or a four-wheel buggy of a saddle-type riding type) that rides on a saddle. The main shaft 4 that rotates together with the main shaft 4 and the magnet 5 that rotates together with the main shaft 4 are provided with a magnetic detection unit 6 that detects the strength of the magnetic field of the magnet 5 by rotating.

  The magnet 5 is a magnet having two poles each having one north pole and one south pole. It has a substantially cylindrical shape.

  As shown in FIG. 5, the magnetic detection unit 6 outputs a detection signal S <b> 2 at the neutral position of the shift cam 3 and a first magnetic detection element 6 a that outputs a voltage that varies according to the position of the shift cam 3 as the detection signal S <b> 1. The second magnetic detection element 6b is provided.

  The first magnetic detection element 6a is electrically connected to an engine control device (hereinafter referred to as ECU) 7 mounted on the two-wheeled vehicle, and outputs a detection signal S1 to the ECU 7.

  The second magnetic detection element 6b is electrically connected to the vehicle instrument 8 which is an external device, and outputs a detection signal S2 to the vehicle instrument 8.

  The ECU 7 controls the engine based on the detection signal S1 and signals from other sensors.

  The vehicular instrument 8 includes a display unit 9 indicating whether or not it is neutral, and the display unit 9 displays whether or not it is neutral based on the detection signal S2 output from the second magnetic detection element 6b. . The display means 9 is a light source such as a light emitting diode, and lights up the light source based on the neutral position detection signal output from the second magnetic detection element 6b to display that it is neutral.

  Next, a specific configuration of the shift position detector 1 will be described.

  The shift position detector 1 includes, in addition to the main shaft 4, the magnet 5, and the magnetic detector 6, a circuit board 10, and a lighting circuit 11 that is a switch means for lighting the light source 9 of the vehicle meter 8, And a housing 12 for storing them.

  The magnetic detection unit 6 stores the first magnetic detection element 6a and the second magnetic detection element 6b in a package 13 made of synthetic resin or the like.

  The magnetic detection unit 6 is connected to the circuit board 10 by soldering, receives power from the ECU 7 or the vehicle instrument 8 and outputs detection signals S1 and S2 corresponding to the rotation angle of the main shaft 4 to the ECU 7 or the vehicle instrument 8. To do.

  The first magnetic detection element 6a is a Hall IC, a magnetoresistive IC, or the like, which detects a leakage magnetic flux that fluctuates depending on the rotation angle of the magnet 5 and converts it into a voltage detection signal S1 proportional to the rotation angle of the magnet 5. As shown in FIG. 5, the voltage detection signal S1 corresponding to the rotation angle of the magnet 5 is stored in a storage unit (not shown) such as a non-volatile memory such as an EEPROM provided in the first magnetic detection element 6a. It is remembered.

  Similarly to the first magnetic detection element 6a, the second magnetic detection element 6b is also a Hall IC, a magnetoresistive IC, or the like. The detection signal S2 of the second magnetic detection element 6b is a switch signal. Unlike the detection signal S1 of the first magnetic detection element 6a, the leakage magnetic flux that fluctuates depending on the rotation angle of the magnet 5 is detected. As shown in FIG. 5, the voltage detection signal S2 corresponding to the predetermined rotation angle of the magnet 5 is converted into the second magnetic detection element. It is stored in a storage unit (not shown) provided in 6b (for example, a nonvolatile memory such as an EEPROM).

  The circuit board 10 is provided with a wiring pattern (not shown) on an insulator made of glass epoxy resin, and the magnetic detection unit 6 and the lighting circuit 11 are electrically connected through the wiring pattern. The ECU 7 and the vehicle meter 8 are electrically connected.

  The lighting circuit 11 includes a transistor, a rectifier, a resistor, and the like, and is mounted on the circuit board 10. When the neutral position is detected by the second magnetic detection element 6b, the lighting circuit 11 outputs a drive signal to turn on the light source 9 such as a light emitting diode provided in the vehicle meter 8.

  The first magnetism detecting element 6a and the second magnetism detecting element 6b incorporate magnetic flux collecting plates 14a and 14b, respectively. The magnetic current collecting plates 14 a and 14 b are made of a magnetic material such as iron, have a circular outer diameter, and have a predetermined thickness with respect to the rotation axis direction of the magnet 5. Hall elements and magnetoresistive elements are provided behind the magnetism collecting plates 14a and 14b, that is, on the side opposite to the side where the magnets 5 are present.

  In particular, the first magnetic detection element 6 a is arranged on the same straight line as the center of the magnetism collecting plate 14 and the rotation center of the magnet 5. With this configuration, the change in magnetic force associated with the rotation of the magnet 5 can be received in the most stable form, and the accuracy of the voltage detection signal S1 proportional to the rotation angle of the magnet 5 is improved. Further, the magnet 5 is arranged so as to cover the second magnetic detection element 6b in the rotation direction of the magnet 5.

  Further, a positioning structure is employed in order to arrange the center of the magnetism collecting plate 14 and the center of the magnet 5 on the same straight line. The positioning structure includes a positioning pin 15 provided in the housing 12 and a through hole 16 provided in the circuit board 11 on which the magnetic detection unit 6 is mounted. By inserting the positioning pin 15 into the through hole 16, The center of the magnetism collecting plate 14a and the center of the magnet 5 can be arranged on the same straight line.

  In addition, 17 is resin which protects the magnetic detection part 6, the circuit board 10, etc.

  With the above-described configuration, the shift position detector 1 uses the two magnetic detection elements 6a and 6b of the magnetic detection unit 6 for shift position and neutral detection, thereby complicating the light source 9 of the vehicle instrument 8 at the neutral position. It is possible to light up without requiring a special circuit.

  The present invention can be used for a shift position detecting device that detects a shift position of a transmission of a vehicle.

DESCRIPTION OF SYMBOLS 1 Shift position detector 3 Shift cam 5 Magnet 6 Magnetic detection part 6a 1st magnetic detection element 6b 2nd magnetic detection element 8 Instrument for vehicles (external apparatus)
9 Display means (light source)
11 Lighting circuit (switch means)
S1 Detection signal output from the first magnetic detection element S2 Detection signal output from the second magnetic detection element

The present invention relates to a shift position detector for detecting the shift position of the transmission of the vehicle.

As a conventional shift position detector , one disclosed in Patent Document 1 is known. The shift position detector includes a cam that rotates in conjunction with the swinging of the shift lever for operating the combination of the transmission gears, terminal blocks which are fixed to cam opposed to detect the rotation angle of the shift cam And a fixed terminal for grounding and a plurality of contact fixed terminals arranged on the terminal block, and can be interlocked with the shift cam while being connected and integrated with the terminal block while being allowed to rotate, and the shift cam and the terminal An interlocking member interposed between the base, a movable terminal disposed on the interlocking member and in contact with a predetermined contact fixed terminal according to the rotation angle of the shift cam, and the movable terminal connected to the ground fixed terminal and the contact fixed A gear shift that is a combination of gears by a shift lever according to which contact fixed terminal is brought into conduction when the movable terminal comes into contact with the coil spring that is biased toward the terminal side It is intended to detect the location. That is, the shift position can be detected by detecting the rotation angle of the shift cam.

However, the shift position detector of the Patent Document 1, since the contact portion of the movable terminal is a contact type which contacts the fixed terminals, the durability of the contact portion tends to deteriorate by being repeatedly used. Further, since detection is performed by mechanical contact, detection at a small rotation angle is impossible. Therefore, the number of position detections is limited, and there is a problem that it is impossible to cope with the need for many position detections.

In order to solve this problem, the present applicant has provided a shift position detector disclosed in Patent Document 2. The shift position detector includes a rotating member, and a magnet that rotates with the rotation of the fixed to the rotating member rotating member, the strength of the magnetic field of the magnet by rotation is disposed to face the magnet the magnet It has a magnetic detection unit for detection, is excellent in durability, and can be detected at a continuous rotation angle.

However, the shift position detector according to Patent Document 2 detects the neutral position, when operating the display means such as a light source provided in the external device of the instrument such as a vehicle, requires a complicated circuit configuration, the number of parts Due to the increase, there are problems such as an increase in cost and an increase in the capacity of the apparatus.

Schematic diagram of a vehicle equipped with shift position detector of the first embodiment of the present invention. FIG. 3 is a block diagram of a shift position detector according to the embodiment. Sectional view of the shift position detector of the embodiment. Diagram showing the positional relationship between the magnet and the gear position detector of the embodiment. Diagram showing an output waveform of the transmission position detector of the signal of the embodiment.

It can be utilized to shift position detector for detecting the shift position of the transmission of the vehicle.

Claims (5)

A magnet that rotates in conjunction with a shift cam that determines a shift position of the saddle-type vehicle, and a magnetism detection unit that is disposed to face the magnet and detects a change in the magnetic field of the magnet as the magnet rotates. In the shift position detector
The magnetic detection unit includes a first magnetic detection element that detects a shift position based on a change in the magnetic field, and a second magnetic detection element that detects a neutral position of a shift based on the change in the magnetic field. The detection element outputs a signal corresponding to the rotation angle of the shift cam, the second magnetic detection element outputs a switch signal indicating whether or not it is in the neutral position, and displays an external device based on the switch signal. A shift position detector characterized by controlling the means. 2. The shift position detector according to claim 1, further comprising switch means for operating the display means based on the switch signal. The shift position detector according to claim 1, wherein the external device is a vehicle meter. The shift position detector according to claim 1, wherein the display means comprises a light source. The magnet arranged to face the magnetic detection element covers the first magnetic detection element and the second magnetic detection element, and is provided in the rotation center of the magnet and in the first magnetic detection element. The shift position detector according to claim 1, wherein the magnetism collecting plates are arranged on the same straight line.

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