JP2011240718A - Accelerator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an accelerator device that can prevent the change in the output of a signal indicating increase or decrease of a rotation angle of a grip due to oscillation not intended by an operator.SOLUTION: At a base end part 1f of the grip body 1a, a rectangular convex part 1g projecting in an axial direction, and a rectangular concave part 1h recessed in the axial direction with respect to the convex part 1g are alternately formed in a circumferential direction. At the end part at the tip end side of a rotary body 4, a plurality of convex parts 41 and concave parts 42 that mesh with the convex part 1g and the concave part 1h formed in the grip body 1a are provided. At the engagement part at which the convex part 41 and the concave part 42 being the engagement parts of the rotary body 4 and the convex part 1g and the concave part 1h being the engagement parts of the grip 1 are mutually engaged, a gap for allowing the grip 1 to move in an axial or radial direction with respect to the rotary body 4 is provided. In addition, the rotary body 4 is prohibited from moving in the axial and radial direction by bearing means 11 and biasing means 7.

Description

  The present invention relates to an accelerator device that outputs a signal based on a rotation angle of a grip provided so as to be capable of reciprocating rotation.

For example, in a vehicle having a handlebar in a steering device such as a motorcycle and a drive device such as an engine, a grip for performing an accelerator operation is provided on the handlebar portion.
The grip has a substantially cylindrical shape, and is rotatably disposed at the end of the handlebar with the end of the handlebar inserted. Depending on the amount of rotation (rotation angle), the grip, for example, opens the throttle valve of the engine. The degree can be changed.

  Conventionally, the grip and the throttle valve are configured to be interlocked with, for example, a wire. However, in recent years, since a fuel injection device is used instead of a carburetor even in a motorcycle, the rotation angle of the grip is measured and measured. The rotation angle is output as a signal, and based on the signal, the opening degree of the throttle valve and the fuel injection amount in the fuel injection device are controlled.

The grip is provided with a rotation angle detection means for detecting increase / decrease in the rotation angle (rotation amount) of the grip, and outputs a signal corresponding to the rotation angle of the grip.
Then, by operating the grip in one rotation direction with the operator's hand, the rotation angle detecting means detects that the rotation angle in one rotation direction increases, and a signal indicating the increase in the rotation angle is generated. It is output to the control device, and for example, it is controlled to increase the opening of the throttle valve.

In addition, the urging means connected to the grip when the operator rotates the grip rotated in one rotational direction so as to return it to the other rotational direction, or the operator releases the hand moves the grip in the other rotational direction. When rotating back, the rotation angle detecting means detects that the rotation angle in one rotation direction decreases, and a signal indicating the decrease in the rotation angle is output to the control device. Controlled to make it smaller.
The rotation angle detection means for detecting the rotation angle of the grip includes, for example, a magnet that rotates in conjunction with the grip and a detection element that detects a magnetic field (change in magnetic field) such as a Hall element or a magnetoresistive element. Is used.

Basically, such an accelerator device includes a grip, a rotation angle detection unit that detects the rotation angle of the grip as described above, and a biasing unit that biases the grip so as to return to the origin side. It is.
For example, such an accelerator device includes a case in which the grip is rotatably held by the handlebar, a magnet that is provided on the grip and rotates integrally with the grip, and an urging means that is held by the grip and the case. And a detection element that is held by a case and detects a change in the magnetic field of the magnet is known (for example, see Patent Document 1).

Further, in Patent Document 1, a rotor including a magnet that is separate from the grip is provided, and the grip and the rotor are integrally attached to be rotatable, and the magnet is attached to the grip and the roller so as to be attracted to each other. There are also proposed ones that rotate the grip and the roller integrally by magnetic force.

JP 2002-256904 A

  By the way, when the magnet is directly provided on the grip as described above, the vehicle vibrates when driving on a rough road, the movement of the operator's hand holding the grip, and other external impacts. For example, the magnet provided in the grip may move in the axial direction with respect to the detection element. In this case, not only the change of the magnetic field due to the rotation of the magnet but also the change of the magnetic field due to the movement of the magnet along the axial direction of the grip occurs in the detection element portion, and the output from the detection element becomes the rotation of the grip. It will change with other factors.

  Further, when the grip is slightly rotated based on the fact that the vehicle provided with the accelerator device vibrates due to a rough road traveling or other factors, an output change unintended by the operator may occur.

Further, even if the grip and the rotor having the magnet are separated, if the grip and the magnet can be rotated together, the same problem as described above will occur.
In addition, even when the grip and the roller having the magnet rotate integrally due to the magnetic force, if the grip and the roller are in contact with each other, there is a possibility that the same problem as described above may occur. If it is working, the same problem may occur. Further, when the roller and the grip are interlocked by the magnetic force, if the roller becomes defective in rotation, only the grip is idle.

  The present invention has been made in view of the above circumstances, and the rotation angle of the grip is not affected by the movement of the grip in the axial direction or the slight rotation of the grip that are not intended by the operator due to vibration or impact. It is an object of the present invention to provide an accelerator device that can prevent an output change of a signal indicating increase / decrease.

The accelerator device according to claim 1 is an accelerator device for outputting a signal based on a rotation angle of a grip provided so as to be reciprocally rotatable,
A rotating body that is arranged coaxially with the grip and rotates as the grip rotates;
A magnet provided on the rotating body;
A rotation angle detecting means for obtaining a rotation angle of the grip;
Bearing means for rotatably supporting the rotating body and restricting movement of the rotating body in the axial direction;
With
The rotating body and the grip are each provided with an engaging portion that engages with each other to transmit rotational motion,
These engaging portions are engaged with each other so as to allow axial movement of the grip with respect to the rotating body.

In the first aspect of the present invention, since the rotating body and the grip are engaged with each other and provided with an engaging portion for transmitting rotational motion, the rotating body can rotate together with the grip, and the rotation angle. In a state where the rotating body including the magnet for measurement is axially moved by the bearing means and is rotatably supported, the engaging portion of the grip and the engaging portion of the rotating body are in contact with the rotating body. Since the grips are engaged so as to allow the axial movement of the grip, it is possible to prevent an output change from the rotation angle detecting means due to the axial movement of the grip.
That is, even if the grip moves in the axial direction, the rotating body can be prevented from moving along with the axial movement of the grip. As a result, it is possible to prevent a change in position due to movement of the rotation angle detection means and the magnet other than the rotation of the magnet, and to stabilize the output from the rotation angle detection means.

An accelerator device according to a second aspect includes the partition member including the rotation angle detecting means and the bearing means, and a support means for supporting the partition member in the invention according to the first aspect. The axial movement of the grip is restricted by the support member,
The engaging portion where the engaging portion of the rotating body and the engaging portion of the grip engage with each other is provided with a gap along the axial direction that allows axial movement of the grip relative to the rotating body. It is characterized by being.

According to a second aspect of the present invention, as a configuration in which the rotating body and the grip are engaged with each other so as to allow the grip to move in the axial direction with respect to the rotating body, an engaging portion of the grip and an engaging portion of the rotating body are provided. A gap along the axial direction of the grip is provided in the engaging portion.
Thereby, even if the grip moves in the axial direction, the movement of the grip is not directly transmitted to the rotating body due to the gap, and the magnet provided on the rotating body by the movement of the grip in the axial direction causes the rotation angle detecting means to It is possible to prevent the output from changing due to movement in the axial direction.

  Here, the grip and the rotating body are arranged on the same axis. In the configuration in which the gap is provided in the axial direction of the engagement portion between the grip and the engaging portion of the rotating body, the grip can be allowed to move in the axial direction with respect to the rotating body. In addition, as a structure for transmitting the rotation, for example, a method of providing axial concaves and convexes (teeth) that mesh with each other on the mutually opposing end surfaces of the grip and the rotating body can be considered.

Further, since the bearing means for restricting the movement of the rotating body in the axial direction is formed on the partition member supported by the support member, it is ensured in the axial direction of the grip between the magnet of the rotating body and the rotation angle detecting means. The change in position along the line is regulated.
In addition, when a part of the grip is deformed due to a fall or the like, there is a gap between the rotating body and the grip, thereby suppressing the influence on the rotating body and causing problems in operability. Can be avoided.
The state in which the bearing means is formed on the partition member provided with the rotation angle detection means is, for example, a configuration in which the bearing means is provided on a member that supports the components constituting the rotation angle detection means, or on one member. The rotation angle detecting means and the bearing means are arranged.

According to a third aspect of the present invention, in the invention of the first or second aspect, the accelerator device applies an operation load to the grip according to the operation amount of the grip, and returns the grip to the backward direction side of the reciprocating rotation. Biasing means for
The biasing means biases the rotating body toward the bearing means.

In the accelerator device according to claim 3, since the biasing means (for example, the return spring) for returning the grip biases the rotating body toward the bearing means, the biasing means rotates by the action of the biasing means. It is possible to prevent the positional relationship between the body magnet and the rotation angle detecting means from being changed except for the rotation of the rotating body. That is, since the rotating body is urged by the urging means toward the bearing means, if the force larger than the urging force of the urging means does not act, the rotating body is kept pressed against the bearing means. Become.
As a result, even if the bearing means has a clearance that allows the rotation of the rotating body, even when vibration or the like during rough roads acts on the rotating body, the rotation relative to the rotation angle detecting means other than the rotational movement of the rotating body It is possible to suppress the movement of the body magnet, prevent the output change due to the vibration of the rotation angle detecting means, and keep the output stable. In particular, as described in claim 2, if the rotation angle detecting means is provided with the bearing means, for example, the support member and the members constituting the rotation angle detecting means may be deformed. However, the rotating body biased toward the bearing means side of the rotation angle detection means moves following the rotation angle detection means, and the positional relationship between the magnet and the rotation angle detection means is maintained.

  According to a fourth aspect of the present invention, there is provided the accelerator device according to any one of the first to third aspects, wherein the engaging portion of the rotating body and the engaging portion of the grip are engaged with each other. The joint portion is characterized in that a gap is formed along a rotational direction that allows a rotational phase shift of the grip relative to the rotating body.

  According to the accelerator device of the fourth aspect, when the grip is slightly rotated due to vibration during driving on a rough road or a slight grip operation not intended by the operator, the grip engagement portions are engaged with each other. Due to the gap along the rotation direction provided in the engaging portion, a slight rotational movement of the grip is difficult to be transmitted to the rotating body, and the output change of the rotation angle detecting means due to the slight rotation of the grip not intended by the operator Can be prevented.

  According to the accelerator device of the present invention, the rotation angle detecting means is capable of detecting a grip movement in the axial direction and a slight rotation of the grip which are not intended by the operator due to vibration during driving or external impact. A change in output can be prevented and a signal indicating the rotation angle of the grip can be stably output.

It is a side view which shows the accelerator apparatus of embodiment of this invention. It is sectional drawing which shows the said accelerator apparatus. It is a disassembled perspective view which shows the said accelerator apparatus. It is a disassembled perspective view which shows the said accelerator apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a side view showing an accelerator device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view showing the accelerator device, and FIGS. 3 and 4 are exploded perspective views showing the accelerator device.
The accelerator device includes a grip 1 provided on the handle bar so as to be capable of reciprocating rotation around the axis of the handle bar, and a rotating body 4 that is disposed coaxially with the grip 1 and rotates as the grip 1 rotates. The magnet 5 provided on the rotating body 4, the rotation angle detecting means 6 for determining the rotation angle of the grip 1, which is disposed in the magnetic field generated by the magnet 5, and the grip 1 via the rotating body 4. The urging means 7 for urging in the backward direction so as to return to the origin position of the reciprocating rotation, and the rotator 4 are supported rotatably with respect to the handle bar, and the movement of the rotator 4 in the axial direction is restricted. Bearing means 11.

The accelerator device supports the grip 1, the rotating body 4, the rotation angle detecting means 6, the urging means 7 and the like on the handlebar and covers a case 2 as a support member that covers at least a part thereof. And a cover 3.
In addition, the accelerator device includes the holder 8 as a partition member including the rotation angle detection unit 6 and a bearing unit 11 that rotatably supports the rotating body 4. The holder 8 that is a partition member is held by the case 2 and the carver 3, and is provided so as to partition the space formed by the case 2 and the cover 3.

The grip 1 includes a cylindrical grip body 1a into which a cylindrical end portion of a handle bar is inserted, and a grip cover 1b that covers the grip body 1a.
The base end portion of the grip 1 is inserted into the cover 3, and the grip body 1a is exposed without being covered by the grip cover 1b.

  The grip cover 1b has a cylindrical shape having an inner diameter that is substantially the same as the outer diameter of the grip body 1a. The grip cover 1b is in a state where the distal end side is closed and the base end portion is disposed outside the cover 3, and the cover 3 A disc-shaped flange 1c centering on the cylindrical base end portion of the grip cover 1b is formed in a portion close to the outer surface and close to the cover 3. The side surface on the base end side of the flange portion 1c and the side surface of the cover portion 31 of the cover 3 facing the side surface are arranged in parallel to each other, and the side surface of the flange portion 1c is in contact with the side surface of the cover 3, thereby The movement in the axial direction from the distal end of 1 to the proximal end is restricted.

  In addition, a portion of the grip body 1a that passes through the cover 31 (described later) of the cover 3 on the inner side of the cover 31 is an enlarged diameter portion 1d whose outer diameter is larger than the outer diameter of the grip body 1a outside the cover 3. Is formed. The enlarged diameter portion 1d is larger than the diameter of the through hole 33 of the lid portion 31 through which the grip body 1a of the cover 3 passes, and the axial movement from the base end to the tip end of the grip body 1a The lid portion 31 regulates it.

  From the above, the grip 1 (grip body 1 a) is restricted from moving in the axial direction by the cover 3. In the structure for restricting the movement of the grip 1 in the axial direction, the distance between the flange portion 1c and the enlarged diameter portion 1d is slightly wider than the thickness of the lid portion 31 of the cover 3. A clearance that allows the grip 1 to rotate smoothly is secured, but the grip 1 can move slightly in the axial direction.

Further, the proximal end side of the enlarged diameter portion 1d of the grip body 1a is disposed in the cover 3, and is a proximal end portion 1f having a diameter larger than that of the portion disposed outside the cover 3 of the grip body 1a. The base end portion 1f is formed with a concave portion 1h in which the inner peripheral surface of the grip body 1a is cut out in a rectangular shape, thereby forming a rectangular convex portion 1g composed of a non-cut-out portion protruding from the concave portion 1h. Rectangular recesses 1h are alternately formed in the circumferential direction. In addition, it will be in the state in which the some convex part 1g was located in the circumferential direction at intervals, and the state in which the some recessed part 1h was located in the circumferential direction at intervals.
Further, in this example, the base end portion having the same diameter (including thickness) as the outer diameter of the cover 3 of the grip body 1a is provided with unevenness including the convex portion 1g and the concave portion 1h. The portion with the larger diameter is formed in a cylindrical shape having the same diameter as the convex portion 1g, and there is no unevenness along the axial direction.

  Therefore, substantially, a plurality of rectangular concave portions along the axial direction are formed on the inner peripheral surface of the base end portion of the grip body 1a at intervals in the circumferential direction. In addition, the convex part 1g and the recessed part 1h of the base end part 1f may be in the state exposed to the outer peripheral side, without providing cylindrical shape in the outer periphery of the part in which the unevenness | corrugation of the base end part 1f was provided.

The case 2 is fixed to a handle bar, and includes a case main body 2a and a bar fixing member 2b.
The case main body 2a includes an oval bottom plate 2c disposed perpendicular to the axial direction of the portion of the handlebar to which the grip 1 is attached, a peripheral wall portion 2e provided along the axial direction around the bottom plate 2c, and the bottom plate 2c. And a pinching portion 2d that protrudes outward from the bar and clamps the handlebar with the bar fixing member 2b. The case main body 2a is formed in an oval and bottomed cylindrical shape from the bottom plate 2c and the peripheral wall 2e.

  The bottom plate 2c is provided with a through hole 2f through which the handle bar passes. And the clamping part 2d and the bar fixing member 2b are arrange | positioned facing each other so that the said through-hole 2f of the baseplate 2c may be pinched | interposed. The opposing surfaces of the sandwiching portion 2d and the bar fixing member 2b are arc surfaces corresponding to the outer peripheral surface of the handle bar, and the through hole 2f of the bottom plate 2c is interposed between the sandwiching portion 2d and the bar fixing member 2b. The handlebar in the inserted state is clamped. The clamping part 2d and the bar fixing member 2b are fastened with, for example, a bolt (screw) or the like.

On the inner surface side of the bottom plate 2c of the cover 3, there is provided a stepped portion 2i on the ring in which a portion that becomes the periphery (peripheral portion) of the through hole 2f is thinned, and the base end portion of the rotating body 4 is It is in a state of entering the stepped portion 2i.
Further, two annular ridges 2g and 2h are formed around the through hole 2f of the bottom plate 2c and outside the step portion 2i with the center of the through hole 2f as the center. In addition, the diameter of the other protrusion 2h is larger than the one protrusion 2g. That is, two annular ridges 2g, 2h having different diameters are arranged concentrically so as to be centered on the central axis of the through hole 2f.

Further, a groove is formed between the two annular protrusions 2g and 2h.
These two ridges 2g and 2h support one end side of the return spring as the urging means 7 composed of the two torsion coil springs 71 and 72. The outer ridge 2g and the inner ridge 2 are supported. One end portion of the outer torsion coil spring 71 is disposed between 2h, and one end of the outer torsion coil spring 71 is fixed. One end portion of the inner torsion coil spring 72 is disposed between the inner protrusion 2h and the rotating body 4 in a state where the base end portion is inserted into the stepped portion 2i, and one end of the inner torsion coil spring 72 is disposed. Is fixed.

  A plurality of engaging portions 2j are provided on the inner peripheral surface of the peripheral wall portion 2e at intervals in the circumferential direction. The engaging portion 2j is a protrusion provided so as to be orthogonal to the bottom plate 2c from the bottom plate 2c, and all the engaging portions 2j are set to the same length along the peripheral wall portion 2e. , And shorter than the peripheral wall 2e. And the outer peripheral part of the holder 8 is engaged and supported by the said engaging part 2j. The outer periphery of the holder 8 has an oval shape similar to the inner peripheral shape of the peripheral wall portion 2e, and has an outer diameter substantially the same as the inner diameter of the peripheral wall portion 2e. The outer periphery of the holder 8 is more than the engaging portion 2j of the peripheral wall portion 2e. It is in a state of being fitted into the inner periphery on the tip side.

And it is attached so that the open side of case 2 may be almost obstruct | occluded except the part which the handle bar of the state inserted in the rotary body 4 and the said rotary body 4 penetrates.
The cover 3 is formed in an oval shape similar to the case 2 and has a bottomed cylindrical shape.
And the cover 3 is provided with the cover part 31 arrange | positioned in parallel with the baseplate 2c of the case 2 at intervals, and the surrounding wall part 32 provided in the cover part 31 along the axial direction of the grip 1 at the circumference | surroundings. Yes.

The lid portion 31 is formed with a through-hole 33 through which the grip body 1a with the handle bar inserted is passed.
Further, the annular end surface of the peripheral wall portion 32 is formed with a locking portion 34 in which the inner peripheral side protrudes from the outer peripheral side. When the cover 3 is attached to the case 2, the locking portion 34 enters the inside of the inner peripheral surface of the distal end portion of the peripheral wall portion 2 e of the case 2.

And the outer peripheral part of the holder 8 which is a partition member is sandwiched between the engaging part 2j of the case 2 and the engaging part 34 of the peripheral wall part 32 of the cover 3, whereby the holder 8 It will be in the state supported by case 2 and cover 3 which become.
The rotating body 4 is a substantially cylindrical body having a cross-sectional shape similar to that of the distal end side portion from the enlarged diameter portion 1d of the grip body 1a, and a handle bar passes through the inside thereof. The circumference is arranged so that it can rotate freely.

The end of the rotating body 4 on the front end side includes a plurality of convex portions 41 and concave portions 42 that mesh with the convex portions 1g and the concave portions 1h formed on the grip body 1a. The convex portion 41 protrudes toward the grip 1 in a rectangular shape along the axial direction of the rotating body 4 and the grip 1, and the concave portion 42 is a portion recessed in a rectangular shape with respect to the grip 1 along the axial direction.
The convex portion 41 and the concave portion 42 of the rotating body 4 are complementary to the convex portion 1g and the concave portion 1h of the grip body 1a, and the shape of the convex portion 41 of the rotating body and the shape of the concave portion 1h of the grip body 1a. And the shape of the recess 42 of the rotating body 4 and the shape of the grip body 1a are approximated.

In addition, the position of the rotating body 4 in the axial direction is regulated by the bearing means 11 of the holder 8 as described later, and the position is fixed to the bearing means 11 by the biasing means 7 as described later. Yes. The grip body 1a is movable in the axial direction by a clearance amount.
In this state, between the front end surface of the convex portion 41 of the rotating body 4 and the bottom surface of the concave portion 1h of the grip body 1a, the bottom surface of the concave portion 42 of the rotating body 4, and the front end surface of the convex portion 1g of the grip body 1a Between them, there is an interval as a gap in the axial direction.

  That is, the grip portion for the rotating body 4 is provided at the engaging portion where the convex portion 41 and the concave portion 42 that are the engaging portions of the rotating body 4 and the convex portion 1g and the concave portion 1h that are the engaging portions of the grip 1 are engaged with each other. There is a gap along the axial direction that allows one axial movement. Accordingly, the convex portion 41 and the concave portion 42 that are the engaging portions of the rotating body 4 and the convex portion 1 g and the concave portion 1 h that are the engaging portions of the grip 1 allow the grip 1 to move in the axial direction with respect to the rotating body 4. Will be engaged.

Note that, for example, in a key and a key groove that transmits rotational motion with two members arranged coaxially, a spline structure, etc., even if the two members are not in a position overlapping in the axial direction, The other member can be moved in the axial direction.
Thereby, it can comprise so that the axial direction movement of the grip main body 1a may be accept | permitted with respect to the rotary body 4, and even if the grip main body 1a moves to the axial direction in the range of the space | interval used as the said clearance gap, it is a rotary body. The axial position of 4 is not affected.

  Further, the width along the circumferential direction of the convex portion 41 of the rotating body 4 disposed in the concave portion 1h is slightly narrowed and rotated with respect to the width along the circumferential direction of the concave portion 1h of the grip body 1a. The width of the convex portion 1g of the grip body 1a disposed in the concave portion 42 is slightly narrower than the width along the circumferential direction of the concave portion 42 of the body 4, and the convex portion 1g of the grip main body 1a and A clearance is provided in the circumferential direction at an engagement portion between the concave portion 1 h and the convex portion 41 and the concave portion 42 of the rotating body 4.

Thereby, a slight rotational phase shift of the grip 1 with respect to the rotating body 4 is allowed.
Further, on the outer periphery of the substantially central portion of the rotating body 4, there is provided a spring locking portion 44 on a schematic disk centered on the axis (rotation center) of the rotating body 4. The spring locking portion 44 is a member that extends in the shape of a bowl around the outer periphery of the rotating body 4 with the cylindrical main body as a central portion, and the inner peripheral side of the distal end side (grip 1 side) is closer to the inner peripheral side than the outer peripheral side. A protruding portion 45 is formed between the protruding inner peripheral portion and the outer peripheral portion.

  The corners of the step surface of the step portion 45 along the axial direction of the rotating body 4 and the side surface on the inner peripheral side have a chamfered shape. Thereby, the inner peripheral side portion of the spring locking portion 44 has a truncated cone shape at the tip end portion, and the chamfered portion of the stepped portion 45 has a tapered surface whose diameter decreases toward the tip end side. It has become. The tapered surface of the step 45 functions as a shaft that is rotatably supported by the bearing means 11 formed on the holder 8.

  In addition, an arc-shaped magnet holding portion 48 is provided inside the stepped portion 45 on the side surface on the distal end side of the spring locking portion 44 so as to protrude toward the distal end side only within a limited angular range that becomes a part of the entire circumference. Is provided. The magnet holder 48 holds the arc-shaped magnet 5, and the arc-shaped armature 13 is provided on the inner peripheral side of the magnet 5. The magnet 5 has an N pole and an S pole arranged side by side in the circumferential direction, and the amateur forms a closed magnetic circuit for the magnetic flux generated between the N pole and the S pole.

The spring locking portion 44 is a circle that protrudes proximally at two locations, the outermost peripheral portion of the side surface on the proximal end side and the intermediate portion between the outermost peripheral portion and the cylindrical main body of the rotating body 4. Annular ridges 46 and 47 are provided.
The two ridges 46 and 47 are provided concentrically, and an annular groove is formed between the ridge 46 on the outer peripheral side and the ridge 47 on the inner peripheral side, and rotates with the ridge 47 on the inner peripheral side. An annular groove is formed between the body 4 and the main body.

The outer torsion coil spring 71 and the inner torsion coil spring 72 are inserted into the outer peripheral and inner peripheral grooves, and the distal end is fixed. It has become a state.
The urging means 7 comprises the outer torsion coil spring 71 and the inner torsion coil spring 72 as described above, the base end side being fixed to the protrusions 2g and 2h of the case 2, and the tip end side being the spring of the rotating body 4. It is fixed to the protrusions 46 and 47 of the locking portion 44 and is rotated in one rotation direction (the side where the throttle valve is opened in the accelerator device) with respect to the case 2, that is, the forward direction of the reciprocating rotation of the grip 1. The torsion coil springs 71 and 72 are twisted and elastically deformed, and the urging force of the torsion coil springs 71 and 72 acts in the direction of closing the throttle valve, that is, in the reverse direction of the reciprocating rotation, For example, when the operator releases his hand from the grip 1, the grip 1 is rotated in the backward direction via the rotating body 4.

Note that the rotation range of the rotating body 4 is determined by a stopper (not shown). Thereby, the rotation range of the grip 1 engaged with the rotating body 4 is determined. Even when the grip 1 is at the origin position of the reciprocating movement within the rotation range, the biasing means 7 biases it in the backward direction.
Further, when the operator operates the grip 1 in the forward direction by the urging means 7 in the backward direction, the amount of elastic deformation of the urging means 7 increases, so that the urging force becomes strong and the grip 1 The urging force becomes a load with respect to the operation of the operator. Thereby, the urging means 7 applies an operation load to the grip 1 according to the operation amount of the grip 1.

The torsion coil springs 71 and 72 as the urging means 7 are arranged in a state of being compressed and deformed between the rotating body 4 whose position on the tip side is determined by the bearing means 11 of the holder 8 and the bottom plate 2 c of the case 2. ing. Therefore, the torsion coil springs 71 and 72 function as compression coil springs and urge the rotating body 4 toward the holder 8 having the bearing means 11.
The holder 8 is formed in an oval shape as described above, has a through hole 8a through which the rotating body 4 into which the handle bar is inserted, and the outer peripheral portion is sandwiched between the case 2 and the cover 3 Is held by.

  And the bearing surface 81 of the shape which chamfered the corner | angular part of the said side surface and the internal peripheral surface of the through-hole 8a is formed in the circumference | surroundings of the through-hole 8a which the said rotary body 4 of the holder 8 penetrates. The bearing surface 81 of the holder 8 constitutes the bearing means 11, and the bearing surface 81 is a frustoconical tapered surface whose inner diameter becomes narrower toward the tip side. The inclination angle of the taper surface and the taper surface of the step portion 45 formed on the tip end side of the spring locking portion 44 of the rotating body 4 have the same inclination angle and come into contact with each other. .

  Further, in the state in which the rotating body 4 is pressed against the holder 8 by the urging means 7 as described above, the force of the rotating body 4 toward the holder 8 is applied to the holder 8 because the tapered surfaces are in contact with each other. The rotation means 4 is converted to a direction toward the center of the bearing means 11 so that the rotating body 4 is held at the center of the bearing means 11, and fluctuation of the rotation center of the rotating body 4 can be prevented.

Further, the holder 8 is provided with a rotation angle detection means 6 for detecting a change in the magnetic field due to the rotational movement accompanying the rotation of the rotating body 4 of the magnet 5.
The rotation angle detection means 6 has a printed circuit board 62 on which a magnetic detection IC 61 is mounted, and the magnetic detection IC 61 is disposed at a position facing and close to the magnet holding portion 48 of the rotating body.
Then, the rotation angle of the grip 1 is detected via the rotating body 4 by detecting a change in the magnetic field generated by the rotation of the rotating body 4 and the magnet 5 held by the magnet holding unit 48. A signal indicating the angle (corresponding to the rotation angle) is output.

The holder 8 has a rectangular storage recess 83 for storing the printed circuit board 62 having the magnetic detection IC 61. The storage recess 83 is formed as a recess by being surrounded by a rectangular frame-shaped wall. In addition, the accommodation recess 83 is provided with an insertion hole 84 into which the magnetic detection IC 61 mounted on the printed circuit board 62 is inserted. The magnetic detection IC 61 inserted into the insertion hole 84 is disposed at a position facing the magnet 5 held in the magnet holding portion 48 of the rotating body 4 in the vicinity thereof.
A stator 63 integrally formed with the holder 8 is provided around the insertion hole 84 into which the magnetic detection IC 61 of the holder 8 is inserted, and the stator 63 is configured to induce magnetism to the magnetic detection IC 61. .

  From the above, the holder 8 that is a partition member is supported by the case 2 and the cover 3 as support members that are fixed to the handlebar and support other members, and constitutes the rotation angle detection means 6 described above. It has a printed circuit board 62 on which a magnetic detection IC 61 is mounted. And the said bearing means 11 is provided in this partition member (holder 8).

According to the accelerator device as described above, when the operator rotates the grip 1, the rotation of the grip 1 is the convex portion 1 g and the concave portion 1 h that are the engaging portions of the grip body 1 a and the concave portion 42 of the rotating body 4. It is transmitted to the rotating body 4 via the convex portion 41. And the magnet 5 provided in the rotary body 4 with the rotary body 4 rotationally moves, and a magnetic field changes.
This change in the magnetic field is detected by the magnetic detection IC 61 as the rotation angle detection means 6, and a signal indicating the change in the magnetic field is output to the outside through the printed circuit board 62 as a signal indicating the rotation angle of the grip 1.

  Here, the grip 1 and the rotating body 4 arranged coaxially with the grip 1 between the convex portion 1g and the concave portion 1h, which are the engaging portions of the grip body 1a, and the concave portion 42 and the convex portion 41 of the rotating body 4. Since there is a gap along the axial direction, the grip body 1a is allowed to move relative to the rotating body 4. Therefore, even when the above-described cover 3 has the axial clearance, even if the grip 1 whose movement in the axial direction is restricted moves by the amount of the clearance or the deformation of the member such as the cover 3, the rotating body 4, the movement of the grip 1 in the axial direction is not transmitted.

As a result, the rotating body 4 does not move even when the grip 1 moves due to vibration during traveling, impact from the outside, or the like.
Further, a tapered surface serving as a shaft portion rotatably supported by the bearing means 11 of the rotating body 4 is provided on a bearing surface 81 provided with a tapered surface serving as the bearing means 11 provided in the holder 8 provided with the rotation angle detecting means 6. Since the step 45 provided with the above is pressed by the urging force of the urging means 7, the axial movement of the rotating body 4 is restricted by the bearing means 11. Further, by being biased by the biasing means 7, the rotating body 4 is biased by the biasing means 7 even if there is an error in molding between the taper surface of the bearing means 11 and the tapered surface of the stepped portion 45. As a result, the axial position can be maintained with high accuracy.

Further, when the rotating body 4 is urged toward the bearing means 11 as described above, a force toward the center of the bearing means 11 acts on the rotating body 4 due to the inclination of the tapered surface, and the rotation center of the rotating body 4 It is possible to prevent the shift.
Further, the rotating body having the magnet 5 is urged toward the bearing means 11 side of the rotating angle detecting means 6 and the position of the rotating body 4 is restricted, so that the displacement of the rotating angle detecting means 6 and the magnet 5 is displaced. By restricting and suppressing a change in position due to other than the rotational movement of the magnet 5, a change in the magnetic field due to other than the rotational movement of the magnet 5 can be prevented.

  As described above, the position of the rotating body 4 in the axial direction is restricted by the bearing means 11 and the biasing means 7, and even if the grip 1 moves in the axial direction, the movement is not transmitted to the rotating body 4. Therefore, the rotating body 4 maintains its axial position, and the magnet 5 moves in the axial direction of the rotating body 4 so that the magnetic field changes due to the axial movement of the magnet 5 at the magnetic detection IC 61 portion. Can be prevented from occurring. Thereby, the rotation angle of the grip 1 with high accuracy can be detected.

  In addition, a slight gap along the circumferential direction of the grip 1 and the rotating body 4 (between the convex portions 1g and the concave portions 1h, which are engaging portions of the grip body 1a, and the concave portion 42 and the convex portion 41 of the rotating body 4). Since there is a clearance that allows a rotational phase shift between the grip 1 and the rotating body 4, for example, slight rotation of the grip 1 can be prevented from being transmitted to the rotating body 4 due to vibration during traveling. In particular, since the rotating body 4 is urged in the backward direction by the urging means 7, between the convex portions 1 g and the concave portions 1 h which are engaging portions of the grip body 1 a and the concave portion 42 and the convex portion 41 of the rotating body 4. In addition, there is a gap so that the movement of the grip 1 in the forward direction is slightly allowed, and the throttle opening is more sensitive than necessary with the slight rotation of the grip 1 due to vibration or the like. It can be mechanically prevented from being controlled.

  Further, as described above, the urging means 7 applies a return force to the origin position to the grip 1, applies an operation load, and further presses the rotating body 4 against the bearing means 11. It has a function of holding the axial position and the rotation center position constant, and by providing the biasing means 7 with a plurality of functions, cost reduction and simplification of the size can be achieved.

1 Grip 1a Grip body 1g Convex part (engagement part)
1h Concave part (engagement part)
1b Grip cover 2 Case (support member)
3 Cover (support member)
4 Rotating body 41 Convex part (engagement part)
42 Recess (engagement part)
6 Rotation angle detection means 61 Magnetic detection IC
7 Biasing means 71 Torsion coil spring (compression coil spring)
72 Torsion coil spring (compression coil spring)
8 Holder (partition member)
81 Bearing surface 11 Bearing means

Claims (4)

An accelerator device for outputting a signal based on a rotation angle of a grip provided so as to be capable of reciprocating rotation,
A rotating body that is arranged coaxially with the grip and rotates as the grip rotates;
A magnet provided on the rotating body;
A rotation angle detecting means for obtaining a rotation angle of the grip;
Bearing means for rotatably supporting the rotating body and restricting movement of the rotating body in the axial direction;
With
The rotating body and the grip are each provided with an engaging portion that engages with each other to transmit rotational motion,
The accelerator device is characterized in that these engaging portions are engaged with each other so as to allow axial movement of the grip relative to the rotating body. A partition member including the rotation angle detection unit and the bearing unit; and a support unit that supports the partition member; and the grip is restricted from axial movement of the grip by the support member;
The engaging portion where the engaging portion of the rotating body and the engaging portion of the grip engage with each other is provided with a gap along the axial direction that allows axial movement of the grip relative to the rotating body. The accelerator apparatus according to claim 1, wherein the accelerator apparatus is provided. According to the operation amount of the grip, an operation load is applied to the grip, and biasing means for returning the grip to the backward direction side of the reciprocating rotation is provided.
The accelerator device according to claim 1 or 2, wherein the urging unit urges the rotating body toward the bearing unit.   In the engaging portion where the engaging portion of the rotating body and the engaging portion of the grip are engaged with each other, a gap is formed along the rotation direction that allows a rotational phase shift of the grip with respect to the rotating body. The accelerator device according to any one of claims 1 to 3, wherein the accelerator device is provided.

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