JP5278248B2 - Throttle grip holding device for outboard motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stably hold a rotational position of a throttle grip. <P>SOLUTION: A throttle grip holding device 30 of an outboard motor for holding the rotational position of the throttle grip 29 includes: a stopper member 31 arranged on a handle body movably in the axial direction of the handle body 28 and non-rotatably and formed at an outer periphery with a male screw 38 and a first tapered face 39 tapering toward the end; and an adjustment member 32 arranged on the handle body immovably in the axial direction of the handle body and rotatably and formed at the inner periphery with a female screw 43 screwed to the male screw and a second tapered face 44 abutting against the first tapered face. An end portion of the stopper member is positioned at the outer periphery of a braking cylindrical part of the throttle grip and the stopper member is moved to a throttle grip side by turning the adjustment member, and by the action of the second tapered face and the first tapered face, the end portion 31A of the stopper member is reduced in diameter to constrict the braking cylindrical part 41 in the radial direction. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a throttle grip holding device for an outboard motor that holds a rotational position of a throttle grip of a steering handle attached to an outboard motor main body.

  Japanese Patent Application Laid-Open No. 2004-151561 discloses a throttle grip holding device that applies frictional resistance to a throttle grip of a steering handle in an outboard motor and holds the rotational position thereof.

  In this throttle grip holding device, a held portion integrally formed with the throttle grip is tightened in the axial direction of the bar handle (handle main body) together with the friction member between the adjusting member and the support member. The rotational position is maintained.

JP 2002-70594 A

  By the way, in the throttle grip holding device described in Patent Document 1, in order to obtain a stronger holding force, it is necessary to increase the contact area with the friction member by extending the held member in the radial direction of the bar handle. is there. However, in this case, the support member and the adjustment member are also increased in diameter, and the diameter of the throttle grip holding device increases. For this reason, when the operator operates the adjustment member, it is difficult to grasp and difficult to operate.

  Further, in the throttle grip holding device described in Patent Document 1, it is possible to increase the holding force of the throttle grip by setting a large screw pitch of the adjusting member. However, in this case, since the held member of the throttle grip is tightened in the axial direction of the bar handle, the tightening unevenness occurs in the circumferential direction of the held member as the screw pitch increases, On the other hand, a uniform holding force cannot be applied over the entire circumference.

  Furthermore, in the throttle grip holding device described in Patent Document 1, the adjustment member moves in the axial direction of the bar handle when a holding force is applied to the throttle grip, so that the clearance between the adjustment member and the throttle grip is increased. Resulting in. For this reason, there is a risk that fishing line or clothes may be caught or caught in the enlarged clearance.

  An object of the present invention is to provide a throttle grip holding device for an outboard motor that can stably hold the rotational position of the throttle grip in consideration of the above-described circumstances.

  The present invention is provided between a handle body of a steering handle attached to an outboard motor body and a throttle grip that is disposed on the handle body and controls the throttle valve opening of the engine, and the rotation of the throttle grip In the throttle grip holding device of the outboard motor that holds the position, the handle body can be moved in the axial direction of the handle body and can not be rotated. A stopper member formed with a tapered surface, and a female screw that is non-movable in the axial direction of the handle main body and that is rotatably disposed on the handle main body and that is threadedly engaged with the male screw on the inner periphery. And an adjustment member formed with a tapered surface abutting portion that abuts against the tapered surface, and the tip of the stopper member has a restriction on the throttle grip. Positioned on the outer periphery of the cylindrical portion, the stopper member moves to the throttle grip side by rotating the adjusting member, and the tip of the stopper portion is contracted by the action of the tapered surface contact portion and the tapered surface. The brake cylinder portion is configured to be able to be tightened in a radial direction by being diametered.

  According to the present invention, by rotating the adjusting member, the stopper member moves to the throttle grip side by the action of the female screw of the adjusting member and the male screw of the stopper member, and the tapered surface contact portion of the adjusting member is the tapered surface of the stopper member. The tip of the stopper member is reduced in diameter to tighten the brake cylinder portion of the throttle grip in the radial direction. As a result, a frictional resistance is generated between the tip of the stopper member and the brake cylinder portion of the throttle grip, and this frictional resistance becomes a holding force, and the rotational position of the throttle grip can be stably held.

1 is a left side view showing an outboard motor equipped with a steering handle to which an embodiment of a throttle grip holding device for an outboard motor according to the present invention is applied. The disassembled perspective view which shows the steering handle of FIG. The steering wheel of FIG. 1 is shown, (A) is a side view, (B) is sectional drawing which follows the IIIB-IIIB line | wire of FIG. 3 (A). FIG. 3B is an enlarged view of an IV portion in FIG. 3B, (A) is a cross-sectional view before tightening the throttle grip by the stopper member, and (B) is a cross-sectional view after tightening the throttle grip by the stopper member.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is a left side view showing an outboard motor equipped with a steering handle to which an embodiment of a throttle grip holding device for an outboard motor according to the present invention is applied. The outboard motor 10 includes an outboard motor main body 11 that generates a propulsive force by transmitting a driving force from a mounted engine (not shown) to the propeller 13, and the outboard motor main body 11 as a transom 15 of the hull 14. And a mounting bracket device 12 for mounting.

  The mounting bracket device 12 includes a clamp bracket 16 and a swivel bracket 17, and the clamp bracket 16 is provided so as to be able to grip the transom 15 of the hull 14. The swivel bracket 17 is supported by the clamp bracket 16 via a swivel shaft 18 so as to be rotatable in the vertical direction. A pilot shaft 19 extends in the vertical direction on the swivel bracket 17 and is provided so as to be rotatable.

  An upper mount bracket 20 and a lower mount bracket 21 are respectively provided integrally with the upper end and the lower end of the pilot shaft 19 so as to rotate. The outboard motor main body 11 is attached to the upper mount bracket via the upper mount unit 22 and to the lower mount bracket 21 via the lower mount unit 23. Thus, the outboard motor main body 11 is provided so as to be pivotable in the left-right direction with respect to the clamp bracket 16 and the swivel bracket 17 around the pilot shaft 19 and with respect to the clamp bracket 16 around the swivel shaft 18. The swivel bracket 17 and the swivel bracket 17 are provided so as to be pivotable in the vertical direction (tilt operation and trim operation).

  The upper mount bracket 20 forms a base end portion of a steering bracket 24, and a steering handle 25 is attached to the steering bracket 24 so as to be rotatable in the vertical direction by a horizontal pivot 26. Using the steering handle 25 attached to the outboard motor main body 11 via the steering bracket 24 and the upper mount bracket 20, the outboard motor main body 11 is turned (steered) in the left-right direction around the pilot shaft 19. .

  As shown in FIGS. 2 and 3, the steering handle 25 includes a handle body 28, a throttle grip 29, and a throttle grip holding device 30, and the throttle grip holding device 30 includes a stopper member 31 and an adjustment member 32. It becomes.

  The handle body 28 is formed with an insertion hole 33 through which the horizontal pivot 26 (FIG. 1) is inserted at the base end, a flange 34 is formed at a substantially central position in the axial direction, and a grip fitting portion 35 is provided at the distal end side. The throttle grip 29 is rotatably disposed on the grip fitting portion 35 of the handle main body 28 and is not movable in the axial direction, so that the opening degree of a throttle valve (not shown) in the outboard motor main body 11 is increased. Control. The throttle grip 29 includes a synthetic resin grip cylinder 29A and a grip rubber 29B that covers the outer periphery of the grip cylinder 29A. A mechanism for controlling the throttle valve opening of the engine by rotating the throttle grip 29 is omitted in the present embodiment.

  The throttle grip holding device 30 stably holds the rotational position of the throttle grip 29 and prevents the throttle valve opening from fluctuating inadvertently due to engine vibration or the like.

  The stopper member 31 constituting the throttle grip holding device 30 is formed with a rotation-preventing groove 36 extending in the axial direction at the base end portion, and the rotation-preventing pin 37 of the handle main body 28 is engaged with the rotation-preventing groove 36. Thus, the stopper member 31 is disposed on the handle body 28 so as to be movable in the axial direction of the handle body 28 and not rotatable. On the outer periphery of the stopper member 31, a male screw 38 is formed on the proximal end side, and a first tapered surface 39 is formed on the distal end side. The first tapered surface 39 is formed in a shape that tapers toward the tip of the stopper member 31.

  A plurality of (for example, four) slits 40 are formed at substantially equal intervals in the circumferential direction on the distal end side of the stopper member 31 where the first tapered surface 39 is formed. Each slit 40 is provided to extend in the axial direction of the stopper member 31. Further, the distal end portion 31A of the stopper member 31 is positioned so as to overlap the outer periphery of the brake cylinder portion 41 formed on the grip body 29 of the throttle grip 29 in a state before tightening, which will be described later, shown in FIG. .

  As shown in FIGS. 2 and 3, the adjusting member 32 constituting the throttle grip holding device 30 has a semi-ring-shaped locking member 42 attached to the base end surface thereof in a ring shape. By positioning the flange 34 of the handle body 28 between the base end surface of the adjustment member 32 and the locking member 42, the adjustment member 32 cannot move in the axial direction of the handle body 28 and can rotate. It is disposed on the main body 28.

  On the inner periphery of the adjustment member 32, a female screw 43 is formed on the proximal end side, and a second tapered surface 44 as a tapered surface contact portion is formed on the distal end side. The female screw 43 is screwed into the male screw 38 of the stopper member 31 and rotates the adjusting member 32, whereby the stopper member 31 can be moved in the axial direction toward the distal end side. The second taper surface 44 is formed in a taper surface having the same inclination as the first taper surface 39, for example, corresponding to the first taper surface 39 of the stopper member 31, and is in surface contact with the first taper surface 39. To be provided.

  As shown in FIGS. 4A and 4B, when the adjustment member 32 is rotated around the axis of the handle body 28, the stopper member 31 moves toward the throttle grip 29 by the action of the female screw 43 and the male screw 38. . As a result, the second tapered surface 44 of the adjustment member 32 acts on the first tapered surface 39 of the stopper member 31 to reduce the diameter of the distal end portion 31A of the stopper member 31, and this distal end portion 31A is the braking cylinder portion of the throttle grip 29. The outer periphery of 41 is tightened in the radial direction. For this reason, a frictional resistance (frictional force) is generated between the tip 31A of the stopper member 31 and the brake cylinder 41, and this frictional resistance holds the rotational position of the throttle grip 29 with respect to the handle body 28. It becomes holding power.

  With the configuration as described above, according to the present embodiment, the following effects (1) to (4) are achieved.

  (1) By rotating the adjusting member 32 of the throttle grip holding device 30, the stopper member 31 moves to the throttle grip 29 side by the action of the female screw 43 of the adjusting member 32 and the male screw 38 of the stopper member 31. The second taper surface 44 of 32 acts on the first taper surface 39 of the stopper member 31 to reduce the diameter of the distal end 31A of the stopper member 31, and the distal end portion 31A diameters the braking cylinder portion 41 of the throttle grip 29. Tighten in the direction. As a result, a frictional resistance is generated between the distal end portion 31A of the stopper member 31 and the braking cylinder portion 41 of the throttle grip 29, and this frictional resistance waits with the holding force, and the rotational position of the throttle grip 29 is moved to the handle body 28. On the other hand, it can be held stably. As a result, the rotational position of the throttle grip 29 does not inadvertently fluctuate due to the vibration of the engine of the outboard motor body 11 and the valve opening of the throttle valve of the engine can be maintained at an appropriate position.

  (2) In order to increase the holding force of the throttle grip 29 caused by the contact between the distal end portion 31A of the throttle member 31 and the brake cylinder portion 41 of the throttle grip 29, the second tapered surface 44 of the adjustment member 32 is moved to the distal end side ( It can be obtained by further reducing the diameter toward the throttle grip 29 side, or by increasing the length (axial direction length) of the tip side portion of the stopper member 31 where the first tapered surface 39 is formed. As a result, the stopper member 31 and the adjustment member 32 of the throttle grip holding device 30 are not increased in diameter and the weight is not increased, and a situation where the operability of the throttle grip 30 is reduced can be avoided.

  (3) Since a plurality of slits 40 are formed in the circumferential direction on the distal end side of the stopper member 31 where the first taper surface 39 is formed, the second taper surface 44 of the adjustment member 32 and the first taper surface of the stopper member 31 are formed. When the distal end portion 31A of the stopper member 31 is reduced in diameter by the action of the one taper surface 39, the distal end portion 31A does not have a shape wavy in the circumferential direction but is reduced in diameter in a substantially perfect circle state. Therefore, the contact between the tip 31A of the stopper member 31 and the brake cylinder 41 of the throttle grip 29 is uniform over the entire circumference, and a uniform holding force (friction resistance) is generated in the circumferential direction of the brake cylinder 41. Can be made. As a result, the throttle grip 29 can be reliably held at an arbitrary rotational position.

  (4) Since the adjustment member 32 and the throttle grip 29 do not fluctuate (move) in the axial direction when the throttle grip holding device 30 holds the rotational position of the throttle grip 29, the adjustment member 32 and the throttle grip 29 There is no excessive clearance in between. As a result, it is possible to prevent the risk of fishing line or clothes getting caught in the clearance.

  As mentioned above, although this invention was demonstrated based on the said embodiment, this invention is not limited to this.

  For example, in the present embodiment, the taper surface contact portion of the adjustment member 32 is the second taper surface 44 formed corresponding to the first taper surface 39 of the stopper member 31. The surface abutting portion may be formed in a curved surface shape or a step shape that can reduce the diameter of the distal end portion 31 </ b> A as the stopper member 31 moves in the axial direction.

DESCRIPTION OF SYMBOLS 10 Outboard motor 11 Outboard motor main body 25 Steering handle 28 Handle main body 29 Throttle grip 30 Throttle grip holding device 31 Stopper member 31A Tip portion 32 Adjustment member 36 Non-rotation groove 38 Male screw 39 First taper surface 40 Slit 41 Brake cylinder portion 42 Locking member 43 Female thread 44 Second taper surface (taper surface contact portion)

Claims (3)

Provided between the steering wheel main body attached to the outboard motor main body and the throttle grip disposed on the steering wheel main body for controlling the throttle valve opening of the engine, and maintains the rotational position of the throttle grip. In the throttle grip holding device of the outboard motor,
A stopper member that is movable in the axial direction of the handle body and is non-rotatably disposed on the handle body, and has a male screw on the outer periphery and a tapered surface that tapers toward the tip,
The handle main body is not movable in the axial direction and is rotatably disposed on the handle main body, and has an internal thread that engages with the male thread on the inner periphery, and a tapered surface contact section that contacts the tapered surface. And an adjustment member formed,
The tip of the stopper member is positioned on the outer periphery of the brake cylinder portion of the throttle grip, and by rotating the adjustment member, the stopper member moves to the throttle grip side, and the tapered surface contact portion and the tapered surface The throttle grip holding device for an outboard motor is configured such that the tip of the stopper portion is reduced in diameter by the action of the above and the brake cylinder portion can be tightened in the radial direction.   The throttle grip holding device for an outboard motor according to claim 1, wherein a plurality of slits are formed in a circumferential direction on a distal end side of the stopper member. 2. The throttle grip holding device for an outboard motor according to claim 1, wherein the tapered surface contact portion of the adjusting member is formed in a tapered surface shape corresponding to the tapered surface of the stopper member .

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