JP2004203231A - Handle of outboard motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foldable tiller handle capable of ensuring the consistent stop maintaining function for a long time while suppressing increase of the handle width as much as possible, and improving the assembly workability. <P>SOLUTION: A friction member 61 to be externally fitted to a rotary spindle 15 and a pair of inner and outer nuts to be screwed to a screw part of the rotary spindle in a pressure contact state are provided in order to stop and maintain a tiller handle 6 turnably supported by a handle bracket 14 in the vertical direction at an arbitrary angle of inclination. A bearing hole 79 is opened in an outer end face of a bearing part 63 on the side with the nuts disposed therein so that the inner nut 71 is accommodated in a relatively rotatable manner. An interposition member 81 which is externally fitted to the rotary spindle to apply the tightening force of the nut to the friction member is provided in the bearing hole. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a handle of an outboard motor that is provided with a propulsion propeller and a power source for driving the same and that is attached to the hull so as to be capable of steering movement, and particularly to a handle of an outboard motor that is steered from the outboard motor body to the hull side. The present invention relates to a handle of an outboard motor having a function of stopping and holding a handle main body rotatably supported in the vertical direction by an extended bracket at an arbitrary inclination angle within a predetermined rotation range.
[0002]
[Prior art]
An outboard motor that has a propulsion propeller and an outboard motor equipped with an engine that drives it can be steered using a tiller handle.The handle body can be turned up and down on a bracket extending from the outboard motor body. , The handle main body can be flipped up from an operation position where the center line thereof is substantially horizontal and folded along the outboard motor main body.
[0003]
In this type of foldable tiller handle, the base of the handle body and the tip of the bracket are connected to each other with a lateral bolt serving as a rotation support shaft, and an axis generated by screwing a nut to the bolt. There is known a configuration in which a friction braking force for stopping and holding a handle main body at an arbitrary inclination angle within a predetermined rotation range is obtained by a fastening force in a direction (see Patent Document 1).
[0004]
[Patent Document 1]
JP-A-4-218492.
[Problems to be solved by the invention]
However, it is desired that the tiller handle having such a stop holding function has a structure capable of holding a required nut fastening force for a long period of time. This may cause a disadvantage that the handle width is increased. Further, the tightening work at the time of assembling becomes troublesome, which may cause a decrease in workability.
[0006]
Furthermore, various devices such as shift levers are arranged on the tiller handle to enhance the driver's convenience, and connecting members such as Bowden cables and wire harnesses for connecting these devices to the outboard motor main body are provided. When the handle is pulled out from the handle body in the vicinity of the bearing portion of the rotation support shaft, it is desirable to determine the structure of the rotation support shaft peripheral portion while paying attention to the arrangement of the connection member in consideration of the above-described problems. It is.
[0007]
The present invention has been devised based on the knowledge of the inventor, and a main object of the present invention is to provide a tiller handle that can be folded around a rotation support shaft in an axial direction that causes an increase in handle width. It is an object of the present invention to provide a handle of an outboard motor which is capable of securing a stable stop holding function for a long period of time while minimizing an increase in size and improving workability during assembly. .
[0008]
[Means for Solving the Problems]
In order to achieve such an object, according to the present invention, as shown in claim 1, the handle body is rotatable in a vertical direction on a bracket (14) extending from the outboard motor body (5) to the hull side. (6) In a handle of an outboard motor in which the handle body can be stopped and held at an arbitrary inclination angle within a predetermined rotation range, a rotation support shaft ( 15) a pair of inner and outer members which are externally mounted and which are screwed together in a state of being pressed against a screw portion (66) provided on the rotating support shaft, and a friction member (61) which generates a required frictional force by an axial fastening force. Nut (71, 72), and a bearing hole in the outer end surface (63a) of the bearing portion (63) on the side where the nut is arranged so that the inner nut (71) can be accommodated in a relatively non-rotatable manner. (79) opens and this The receiving bore, and shall intermediate member to act on the friction member fastening force of the exterior has been nut rotating shaft (81) is provided.
[0009]
According to this, the nut can be securely prevented from being loosened by the double nut fastening method, and the inner nut is housed in the bearing hole, thereby suppressing an increase in the axial dimension of the connecting portion for a long time. As a result, a stable fastening force can be secured. In addition, since the inner nut is housed in the bearing hole, the inner nut cannot be rotated relative to each other, so when assembling, install and tighten the tool only on the side opposite to the screw part where the nut is screwed. Work can be performed, and workability can be improved.
[0010]
In the handle of the outboard motor, as shown in claim 2, the equipment (26, 27, 28, 37, 38) mounted on the handle body is provided at the base of the handle body (6). A lead-out part (74) for pulling out the connection member (44/47/51) connected to the side from the inside of the handle body is provided near the bearing part (62), and a nut (71/72) is attached to the bearing part. May be arranged on the side opposite to the lead-out portion with respect to. According to this, since the nut is arranged on the side not covered by the connection member such as the Bowden cable or the wire harness, the outer nut can be easily tightened without being obstructed by the connection member. In addition, since the inner nut is housed in the bearing hole as described above, the protrusion height of the nut protruding from the side surface not covered with the connection member is suppressed to be small, so that the appearance around the tiller handle is improved. Can be.
[0011]
Further, according to this configuration, the interposition member is provided on the side opposite to the lead-out portion of the connection member together with the nut, and the friction member is displaced toward the lead-out portion side of the connection member by that amount. For this reason, the bracket is positioned with respect to the center line of the outboard motor main body for layout reasons such as placing an introduction section for drawing the connecting member drawn out of the handle main body into the outboard motor main body right beside the bracket. Even if it is extended forward in an offset state, the bearing area that substantially functions as a bearing centering on the friction member is set in a state close to the center line side of the outboard motor main body, thereby enabling steering operation. The operability of the handle main body at the time of turning operation upward or upward can be improved.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0013]
FIG. 1 is a side view showing the entire outboard motor to which the present invention is applied. The outboard motor includes a propulsion propeller 1 and an engine (power source) 2 for driving the same. An outboard motor main body 5 is mounted on a hull 3 via a mounting bracket 4 so as to be capable of steering motion. A handle body 6 extending toward the hull 3 for steering operation of the machine body 5.
[0014]
A swivel case 8 is connected to the mounting bracket 4 so as to be rotatable about a tilt shaft 7 in a horizontal direction. The swivel case 8 includes a cylindrical portion that rotatably supports a vertical swivel shaft. A mount frame 9 is connected to an upper end of the swivel shaft, and a lower mount housing 10 is connected to a lower end. The mount frame 9 and the lower mount housing 10 are connected to the engine mount case 17 and the extension case 18 via vibration isolating devices 11 and 12 provided by elastic members provided on bolt portions extending rearward, so that the outboard motor main body is provided. Numeral 5 is capable of steering movement around the center line (steering axis) 13 of the swivel shaft. The engine mount case 17 is covered with an under cover 19, and an engine cover 21 is attached to an upper portion thereof via an extension case 20.
[0015]
The handle main body 6 is connected to the mount frame 9 on the outboard motor main body 5 side via a bracket 14, and the bracket 14 supports the handle main body 6 so as to be rotatable about a horizontal rotation support shaft 15. are doing. At the connecting portion 16 between the handle body 6 and the bracket 14, the handle body 6 is rotated upward from an operation position where the center line is substantially horizontal as shown by a solid line in FIG. A held hinge structure is provided.
[0016]
FIG. 2 is a side view showing in detail the periphery of the handle main body and the bracket shown in FIG. The bracket 14 is fixed to the front end of the mount frame 9 with bolts 22. Between the swivel case 8 and the mount frame 9, there is provided a load adjusting device 23 for adjusting an operation load at the time of steering by the handle body 6, and by sliding the operation lever 24 right and left, the sliding resistance is reduced. The force can be increased or decreased to adjust the required operation load, and the outboard motor body 5 can be fixed at a required steering angle by restricting the steering motion of the outboard motor body 5 by the sliding resistance force. .
[0017]
On a side surface 25a of the housing 25 of the handle body 6, a shift lever 26 for switching between forward and backward movement and a tilt switch 27 for causing the outboard motor body 5 to perform a tilt operation are provided. A grip 28 is provided at the tip of the handle main body 6 so that the driver grips and performs a steering operation and adjusts a throttle opening by a rotation operation about a center line.
[0018]
FIG. 3 is a top view of the periphery of the handle main body and the bracket shown in FIG. The handle body 6 is provided such that the extension direction indicated by the center line 31 of the grip 28 provided at the tip thereof is inclined with respect to the center line 32 in the front-rear direction of the outboard motor body 5 when viewed from above. The driver sits or stands at a position opposite to the extending direction of the handle main body 6 (here, the left side in the figure) across the center line 32 of the outboard motor main body 5 to perform the steering operation.
[0019]
At a portion near the base end of the upper surface 25b of the housing 25 of the handle body 6, a display 36 provided with two indicator lamps 34 and 35 for warning of abnormal lubricating oil pressure and warning of abnormal cooling water temperature is provided on a display surface. Is provided so as to face the distal end side of the handle main body 6. An ignition switch (starter switch) 37 is provided on a side surface 25c of the housing 25. An emergency stop switch 38 that stops the engine when the driver falls from the hull is provided at a position of the housing 25 near the connecting portion 16 on the upper surface 25b.
[0020]
The bracket 14 extends obliquely upward in a side view as shown in FIG. 2, but its base end side 14 a has its center line positioned on the center line 32 of the outboard motor body 5 in a top view. On the other hand, the distal end side 14b is extended forward with its center line shifted from the center line 32 of the outboard motor main body 5.
[0021]
FIG. 4 is a side view schematically illustrating components related to the operation device and the display illustrated in FIGS. 2 and 3. The shift lever 26 is mechanically connected via a shift rod 43 and a shift cable 44 to a gear / clutch mechanism 42 connected to a drive shaft 41 hanging down from the engine 2. The rotation direction of the propeller shaft 45 is switched by the gear / clutch mechanism 42 according to the tilting operation in the front-back direction. The grip 28 at the tip of the handle main body 6 is mechanically connected to a throttle valve 46 inside the outboard motor main body 5 via a throttle cable 47. Is adjusted.
[0022]
An indicator lamp 34 (see FIG. 3) for warning of abnormal lubricating oil pressure in the display 36 detects the pressure of the lubricating oil sucked up from the oil pan 49 by the oil pump 48 and sent out to the cylinder head or the like of the engine 2. The oil pressure switch 50 is electrically connected via a lead wire in the wire harness 51. An indicator lamp 35 (see FIG. 3) for warning of an abnormality in the cooling water temperature is taken in by a cooling water pump 53 from an intake port 52 provided at a lower portion of the outboard motor body 5 and introduced into a water jacket of the engine 2. Is electrically connected via a lead wire in the wire harness 51 to a thermoswitch 54 for detecting the temperature of the wire.
[0023]
Further, the tilt switch 27 is electrically connected to a switching valve 56 of a tilt cylinder 55 that expands and contracts by hydraulic pressure via a lead wire in the wire harness 51. The ignition switch 37 is electrically connected to a start switch of a starter motor provided inside the outboard motor main body 5 via a lead wire in the wire harness 51. The emergency stop switch 38 (see FIG. 3) is electrically connected to a CDI unit 57 provided inside the outboard motor main body 5 via a lead wire in the wire harness 51. It should be noted that power is supplied to these electric devices from a generator 59 attached to the flywheel 58.
[0024]
The shift cable 44, the throttle cable 47, and the wire harness 51 (connection member) for connecting the equipment mounted on the handle main body 6 to required parts on the outboard motor main body 5 side are shown in FIGS. As shown in FIG. 7, after the lead-out portion 74 provided at the rear end of the housing 25 in the handle main body 6 is once drawn out to the outside, the lead-out portion 75 provided at the front end of the extension case 20 on the outboard motor main body 5 side is used. It is drawn into the outboard motor main body 5. The introduction portion 75 is provided right beside the bracket 14, and when the handle main body 6 is rotated up and down as shown in FIG. 1, the shift cable 44, the throttle cable 47, and the wire harness 51 are appropriately adjusted. It is bent so as not to hinder rotation of the handle body 6. In order to prevent the appearance around the handle body 6 from being impaired, the introduction portion 75 is provided immediately near the bracket 14 so that the exposed length of the connection member is shortened.
[0025]
FIG. 5 is a cross-sectional view showing a connecting portion between the handle main body and the bracket shown in FIGS. 2 and 3 in detail. At the connecting portion 16 between the handle body 6 and the bracket 14, the handle body 6 is stopped and held at an arbitrary inclination angle within a predetermined rotation range. A bush (friction member) 61 that generates a required frictional force is provided.
[0026]
The rotation support shaft 15 penetrates a bearing portion 62 on the handle body 6 side and a pair of bearing portions 63 and 64 provided on the bracket 14, and connects the handle body 6 and the bracket 14 to each other. A head 65 having a hexagonal cross section is formed at one end, and a screw portion 66 is formed at the other end. The bearing portion 62 on the handle body 6 is formed to project in a convex shape, and the pair of bearing portions 63 and 64 on the bracket 14 side are formed in a concave shape so as to sandwich the bearing portion 62 on the handle body 6 from both sides in the axial direction. One of the bearing portions 63 is formed to be wider than the other bearing portion 64.
[0027]
The bush 61 includes a cylindrical axial portion 61a into which the rotation support shaft 15 is inserted, and a flange-shaped radial portion 61b provided at one end thereof. It is formed of a synthetic resin material capable of generating a force, and is provided in a pair in a state fitted in both openings of a bearing hole 68 formed in the bearing portion 62 of the handle body 6.
[0028]
A pair of inner and outer nuts 71 and 72 functioning as a slack stop by a double nut fastening method are screwed together with the screw portion 66 of the rotation support shaft 15 in a state where they are pressed against each other. Nuts 71 and 72 are disposed on the side opposite to the lead-out portion 74 of the wire harness 51 (connection member). Both nuts 71 and 72 have a hexagonal cross section. The head 65 of the rotation support shaft 15 is partially received in a recess 77 formed in an opening end surface of a bearing hole 76 provided in a bearing 64 opposite to the nuts 71 and 72. Relative rotation is possible.
[0029]
A bearing hole 79 is opened on the outer end surface 63a of the bearing portion 63 on the side where the nuts 71 and 72 are arranged so that the inner nut 71 can be accommodated in a relatively non-rotatable manner. A collar (intervening member) 81 is provided on the rotation support shaft 15 to apply the fastening force of the nut 71 to the bush (friction member) 61. The nut receiving portion 82 for receiving the inner nut 71 in the bearing hole 79 is formed in a hexagonal cross section complementary to the nut 71. The collar 81 has a cylindrical shape, and is rotatably accommodated in a collar accommodating portion 83 having a circular cross section in the bearing hole 79. The nut accommodating portion 82 is formed to have a sufficient axial dimension so as not to restrict the axial displacement of the nut 71 during tightening.
[0030]
A washer (wave washer) 85 is interposed between the nut 71 and the collar 81, and a washer (flat washer) 86 is interposed between the collar 81 and the bush 61. A washer (flat washer) 87 is interposed between the head 65 of the rotation support shaft 15 and the bearing portion 64.
[0031]
The handle body 6 has the housing 25 and the bearing 62 formed integrally by casting with an aluminum alloy material. The bracket 14 is similarly formed by casting an aluminum alloy material. Further, the collar 81 is also made of an aluminum alloy material.
[0032]
In the hinge structure configured as described above, when the head 65 of the rotation support shaft 15 is tightened to a required torque while the nut 71 is fitted in the bearing hole 79, the fastening force is increased through the washer via the collar 81. 86, the washer 86, the radial portion 61b of the bush 61, the side surface of the bearing portion 62 on the handle body 6, and the side surface of the one bearing portion 64 on the bracket 14 are pressed against each other. The inner peripheral surface of the bearing hole 68 on the sixth side, the axial portion 61a of the bush 61, and the outer peripheral surface of the rotation support shaft 15 are pressed against each other. As a result, a friction braking force for stopping and holding the handle body 6 is generated against the turning force of the handle body 6 due to its own weight, and a turning operation force exceeding the friction braking force is applied to the handle body 6 so that the handle body 6 6 can be smoothly rotated.
[0033]
At the time of assembly, after the bush 61 is assembled to the bearing portion 62, the bearing portion 62 is fitted between the bearing portions 63 and 64 so that the bearing holes 68, 76, and 79 are aligned with each other, and a washer 86 is further assembled. Also, the inner nut 71 is assembled together with the collar 81 from the opening on the outer end face 63a side of the bearing hole 79. Then, the rotation support shaft 15 is inserted from the bearing portion 64 side, and a tool is mounted on the head 65 of the rotation support shaft 15 to perform tightening. At this time, the fastening force is adjusted so that an appropriate rotation operation resistance force is obtained. When the outer nut 72 is tightened after the work of adjusting the fastening force, the required fastening force is maintained for a long time by the double nut effect.
[0034]
In this hinge structure, a bearing region which substantially functions as a bearing is formed around a center line 91 of the bearing portion 62 on the handle body 6 side on which the bush 61 is mounted. Specifically, in the bearing portion 62 on the handle body 6 side, a portion where the bush 61 extends becomes a bearing region, and extends over substantially the entire length. In one bearing portion 64 on the bracket 14 side, a portion excluding the concave portion 77 that receives the head 65 of the rotation support shaft 15 is a bearing region. In the other bearing portion 63 on the bracket 14 side, the portion where the collar 81 extends and the screw portion 66 of the rotation support shaft 15 except the screw portion 66 becomes a bearing region.
[0035]
As a whole, these bearing areas are provided on the side opposite to the lead-out part 74 of the cables 44 and 47 and the wire harness 51 together with the nuts 71 and 72 on the side opposite to the lead-out part 74 of the connection part 16. That is, it is offset to the center line 32 side of the outboard motor main body.
[0036]
【The invention's effect】
As described above, according to the present invention, the nut is prevented from being loosened by the double nut fastening method, and the inner nut is accommodated in the bearing hole, thereby suppressing an increase in the axial dimension that causes an increase in the handle width, A stable stop holding function can be secured over a long period of time. Further, since the protrusion height of the nut protruding from the side surface of the bearing portion is reduced, the appearance around the tiller handle can be improved. In addition, the interposition member together with the nut is provided on the side opposite to the lead-out portion of the connection member such as a Bowden cable or a wire harness. It is possible to shift to the line side, and the operability of the tiller handle at the time of steering operation or upward turning operation can be improved.
[Brief description of the drawings]
FIG. 1 is a side view showing an entire outboard motor to which the present invention is applied; FIG. 2 is a side view showing details of a periphery of a handle body and a bracket shown in FIG. 1; FIG. 3 is a handle shown in FIG. FIG. 4 is a top view of the peripheral portion of the main body and the bracket. FIG. 4 is a side view schematically showing components related to the operating device and the display shown in FIGS. 2 and 3. FIG. 5 is a handle shown in FIGS. Cross-sectional view showing the connection between the main body and the bracket in detail.
DESCRIPTION OF SYMBOLS 1 Propulsion propeller 2 Engine 3 Hull 5 Outboard motor main body 6 Handle main body 14 Bracket 15 Rotation support shaft 16 Connection part 31 Center line of grip 32 Center line of outboard motor main body 44 Shift cable (connection member)
47 Throttle cable (connection member)
51 wire harness (connection member)
61 bush (friction member), 61b radial portion, 61a axial portion 62, 63, 64 bearing portion 65 head 66 screw portion 68, 76, 79 bearing hole 71, 72 nut 74 lead-out portion 81 collar (intervening member)
82 Nut accommodating portion 83 Collar accommodating portion 86 Washer 91 Center line of bearing portion 92 Center line of connecting portion

Claims (2)

A boat in which a handle body is supported rotatably in the vertical direction by a bracket extending from the outboard motor body toward the hull, and the handle body can be stopped and held at an arbitrary inclination angle within a predetermined rotation range. The handle of the outside machine,
A state in which a friction member that is provided on a rotation support shaft that connects the handle body and the bracket to each other and generates a required frictional force by an axial fastening force and a screw portion provided on the rotation support shaft are pressed against each other. A pair of inner and outer nuts that are screwed together with
A bearing hole is opened on the outer end surface of the bearing portion on the side where the nut is arranged so that the inner nut can be accommodated in a relatively non-rotatable manner, and inside the bearing hole, the rotation support shaft is externally mounted. A handle for an outboard motor, wherein an intervening member is provided for applying a fastening force of the nut to the friction member. At the base of the handle main body, a lead-out portion for pulling out a connection member for connecting a device mounted on the handle main body to the outboard motor main body side from the inside of the handle main body is provided near the bearing portion. ,
The handle of an outboard motor according to claim 1, wherein the nut is disposed on a side opposite to the lead-out portion with the bearing portion interposed therebetween.

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