JPH04191192A - Handle post frame for small size gliding boat and manufacture thereof - Google Patents

Abstract

PURPOSE:To smoothly slide a handle unit and to ensure the wear resistance and rust-resistance of a slide contact part thereof by applying a teflon coating over the outer surface of a slide rail in a range where the handle unit slides, and by forming a frame including the handle unit with a welded assembly structure. CONSTITUTION:A frame 20 is composed of two left and right rear pipe members 20A, and a slide rail 28 secured to the upper parts of the left and right rear pipe member 20A which are formed of light alloy materials such as aluminum alloy or the like, and which are integrally incorporated with each other by welding so as to have a welded structure. Further, teflon coating is applied over the outer surface of the slide rail in a range where the handle unit 21 slides. Accordingly, it is possible to smoothly slide the handle unit 21, and further, it is possible to ensure high wear resistance and rust resistance for the slide contact part thereof.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a frame of a handle post used in a small personal watercraft which is sailed by riding on a deck and holding a steering handle, and a method for manufacturing the frame. Regarding.

[Conventional technology]

The hull of this type of small personal watercraft is generally formed of a hollow shell made by joining a plastic molded deck part and a hull part, and the engine installed inside the hull drives the propulsion machine at the rear of the hull, and also drives the propulsion machine at the rear of the hull. It is configured to navigate by grasping the handle of the provided steering device.

A propeller or a jet pump is used as the propulsion device, and in the case of a jet pump, the direction of the injection nozzle can be changed from side to side for steering.

Prior literature includes, for example, Japanese Patent Application Laid-Open No. 2-81790.

As the steering device, a handle post protruding from the deck may be used.

This handle post includes a frame mounted on a deck, a handle unit attached to the frame, a handle attached to the tip of a steering shaft pivotally supported on the handle unit, and the frame and the handle unit excluding the handle. This part is covered with a handle post cover.

In addition, in a small personal watercraft that has a bench-type seat that allows two people to ride side by side, the handle unit is attached to the frame inside the handle post so that its position can be adjusted in the left and right directions, so that it can be adjusted to suit the position and posture of the operator. Adjust the left and right position of the handle accordingly! A handle post having an I-section structure has been proposed.

Some handle posts of this type have a structure in which a slide rail is provided at the upper end of the frame, and the handle unit including a steering shaft etc. is mounted so as to be slidable in the left and right direction along the slide rail. This type of structure is described in Utility Model Application No. 1-69384 filed by the same applicant.

As for the frame of the handle post, the slide rail is fixed to another frame member with bolts, etc., or the slide rail made of steel or light alloy is welded to another frame member of the same type of metal, which is integral welding. structure is proposed.

[Technical Problem to be Solved by the Invention] However, in the above-mentioned conventional handle post frame, it is necessary to ensure smooth sliding of the handle unit and to improve the wear resistance of the sliding contact portion with the handle unit. In order to maintain the slide rail, a sheet metal rail member is fixed to the sliding portion of the slide rail with screws, etc., but such a structure has the technical problem of a complicated structure and increased cost, and the problem that the slide rail and handle unit ( There was a technical problem in that it took time and effort to ensure fitting accuracy with the bracket (bracket), and furthermore, the rust prevention function of the sliding contact part was not always sufficient.

The present invention has been made in view of such technical problems, and an object of the present invention is to enable a handle unit to slide smoothly with a simple and inexpensive structure that does not require the sheet metal rail member. A frame for a handle post of a small personal watercraft, which can also ensure wear resistance and rust prevention function of sliding contact parts, and easily ensure fitting accuracy between a slide rail and a handle unit, and the frame. An object of the present invention is to provide a manufacturing method.

C Means for Solving the Problem] The present invention provides a frame for a handle post for a small personal watercraft having a structure in which a frame attached to a deck is provided with a slide rail in the left and right direction, and a handle unit is attached to the slide rail so as to be movable in the left and right directions. In this method, a Teflon coating is applied to at least the sliding contact range of the surface of the slide rail with the handle unit, and the frame including the slide rail is made of a light alloy welded assembly structure, thereby making the sheet metal rail member With a simple and inexpensive structure that does not require a smooth sliding of the handle unit, it is possible to ensure the abrasion resistance and rust prevention function of the sliding contact area. To provide a frame for a handle post for a small personal watercraft, which can easily ensure alignment accuracy.

Another aspect of the present invention is a method for manufacturing a handle post frame for a #I-built small personal watercraft, in which a frame to be attached to a deck is provided with a left-right slide rail, and a handle unit is attached to the slide rail so as to be movable in the left-right direction. , the slide rail and other frame members are made of light alloy, the surface of the slide rail is coated with Teflon at least in the sliding contact area with the handle unit, and the slide rail and other frame members are assembled by welding. Next, by applying a rust prevention treatment such as chromate treatment to the frame of this welded structure, the handle unit can be slid smoothly with a simple and inexpensive structure that does not require the sheet metal rail member. Manufacture of a frame for a handle post for a small personal watercraft, which can ensure wear resistance and rust prevention function of the sliding contact part, and also easily ensure the precision of fitting between the slide rail and the handle unit. The present invention provides a method.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 5 is a longitudinal cross-sectional view of the central part showing an example of the structure of a small watercraft having a handle post frame according to the present invention;
FIG. 6 is an external perspective view of the small watercraft shown in FIG. 5.

In Figures 5 and 6, the hull l has a structure in which a deck 2 and a hull 3 are joined together at a mating surface 4, and a space for the crew to sit is located at the middle part of the deck 2 in the longitudinal direction. A cockpit 7 has a bench-type seat 5 and a floor 6 in front of the seat.

The deck 2 and hull 3 are made of, for example, plastic (
It is composed of molded products (including FRP).

The illustrated seat 5 usually has a width that allows two people to sit side by side, and a backrest portion 5A is integrally formed at the rear thereof.

A handle post 8 that projects onto the cockpit is attached to a portion of the deck 2Q on the front side (near the bow) of the cockpit 7.

An engine 10 is mounted inside the hull 1 below the seat 5, and the engine drives a propulsion device 12 mounted at the rear of the hull via a drive shaft 11.

As the propulsion device 12, a jet pump is used which obtains propulsive force by injecting water sucked in from the bottom opening 13 rearward.

This propulsion device 12 is provided with an injection nozzle 14,
It is configured to perform steering by changing the direction of the injection nozzle 14 from side to side.

In the illustrated example, the inside of the hull 1 includes a bulkhead 19A,
It is divided into front and rear parts by 19B, and the rearmost room is an engine room 18 that stores the engine IO and the like.

In this engine room 18, for example, a fuel tank (
Various accessories such as a battery (not shown), a battery (not shown), and an electrical box (not shown) are also stored and installed.

The handle post 8 is composed of a frame 20 attached to the deck 2, a handle unit 21 attached to the frame 20, and a handle post cover 22 covering the frame and the handle unit.

The handle unit 21 has a structure in which a steering shaft 24 is pivotally supported on a bracket 23, and a bundle 15 is attached to the tip of the steering shaft 24 protruding from the cover 22.

The frame 20 is provided with a slide rail 28 (FIG. 1), which will be described later, and the handle unit 21 is mounted along the slide rail 28 so that it can move in 11 positions in the left and right direction.

A control cable (steering force transmission member=steering cable) 16 is connected to the surface of the handle unit 21 and the injection nozzle 14, and the handle 15
By operating the injection nozzle 14, the direction of the injection nozzle 14 is changed and steering is performed.

Note that it is also possible to provide a rudder plate (not shown) instead of the injection nozzle 14 and to operate the direction of the rudder plate using the control cable 16.

The handle 15 is also provided with a throttle lever (not shown) for controlling the engine 10 via a throttle cable 17.

As the handle 15, in addition to the concave-shaped handle shown in the figure, a round handle, a bar handle, etc. can be freely used.

The frame 20 of the handle post 8 is attached to a base bracket 25 fixed to the deck 2.

FIG. 2 is an exploded perspective view showing the connection structure between the base bracket 25 and the deck 2. As shown in FIG.

2 and 5, the base bracket 2
5 is fixed on the deck 2 by clamping (fastening) the base bracket 25 and the under bracket 26 with the deck surface 27 in between.

In the illustrated example, the under bracket 26 includes a member 26A for fixing the front half of the base bracket 25 and a member 26A for fixing the rear half of the base bracket.
It is made up of two members B.

However, depending on the case, the under bracket 26 may be formed of a single plate-shaped member.

The base bracket 25 and the deck surface 27 are formed with open lower portions 5 and 76 through which the control cables 16 and 17 are inserted.

Note that the reference numeral 61 in FIG. 2 indicates a hatch formed on the deck 2 (the hatch cover is omitted).

FIG. 1 is a perspective view showing the frame 20 of the handle post 8. FIG.

In Figure 1, the frame 20 includes two left and right rear pipe members 20A and two left and right front pipe members 20A.
0B and a slide rail 28 fixed to the upper ends of the left and right rear pipe members 20A are welded together, and in the illustrated example, the left and right reinforcing gussets 64, the left and right pipe members 20B are A connecting member 66 and a bracket for attaching the above-mentioned /'1 dollar post cover 22 (FIG. 5) are welded together.

The slide rule 28 welded to the upper end of the frame 20 forms a sliding guide member for supporting the handle unit 21 (FIG. 5) so that its position in the left and right direction can be adjusted.

The frame 20 with the above configuration has each pipe member 20A.
, 20B (4 in total) by fastening the lower ends of the base bracket 25 with bolts, nuts, etc.
It is fixed on the deck 2 (FIG. 5) via the base bracket 25.

The frame 20 is constituted by a welded structure in which each of the above-mentioned components is made of a light alloy member such as aluminum, and these are integrated by welding.

Note that the base bracket 25 and the under bracket 26 (FIG. 2) can also be formed of a light alloy such as aluminum die-casting.

FIG. 3 is a bottom view showing the state of the slide rail 28 before welding, and FIG. 4 is a cross-sectional view taken along the line ■--■ in FIG.

In the third country theory and Figure 4, this slide rail 28
is made of a light alloy component, such as an aluminum extrusion.

A retaining lower part 5 for positioning the handle unit 21 in the left and right direction is formed at a predetermined position on the bottom surface of the slide rail 28.

Furthermore, at least the range of the surface of the slide rail 28 in which it comes into sliding contact with the handle unit 21 is coated with a deflon coating.

In the illustrated example, both ends of the slide rail 28, that is, excluding the welded part with other members of the frame 20 (rear pipe member 20A and gusset 64 in FIG. 1) and the heat affected zone thereof The range has a Teflon coating.

That is, when coating with Teflon, the treatment step is performed while masking the area A.

The slide rail 28 is welded together after being coated with Teflon, and forms the frame 20 of the welded structure shown in FIG. 1 together with other members.

In this case, the frame 20 including the slide rail 28
Each constituent member is formed from a homogeneous light alloy member,
If aluminum alloy is used, all members are made of the same or similar aluminum alloy material.

After constructing the welded structure 20 as shown in FIG. 1 in this manner, the frame 20 is completed by subjecting the entire surface of the welded structure 20 to a rust prevention treatment such as chromate treatment (allodine treatment, etc.).

The Teflon coating is a dry solid lubricant coating that uses fluororesin as a solid lubricant, and has the characteristics of fluororesin such as self-lubricating and non-adhesive properties, especially low friction and wear resistance. It has excellent wear resistance and water repellency.

In addition, the Teflon coating forms a lubricating film with excellent adhesion to metal surfaces, and uses thermoplastic resin as the binder, which has excellent heat resistance, mechanical properties, and chemical properties, and can be applied over a wide temperature range. It shows good friction properties in

Furthermore, the Teflon coating has excellent chemical resistance, solvent resistance, and oil resistance, and since the baking temperature is relatively low, it has almost no effect on nonferrous metals such as light alloys. .

An example of the characteristic values of the Teflon coating of the slide rail 28 was as follows.

Film thickness --------10 to 30 μl Friction coefficient ---0, 08 to 0. 1 Maximum operating temperature---260'Ct-M property-------
--10 (JIS DQ2Q2 g, 12) Scratch resistance -1--H~2H (JIS K54006゜14
) Flexibility - m - - - - - - - Resistance to bending (JIS) - Impact strength (JIS) - No deformation or peeling due to tilm Corrosion resistance (1 (rs) - - 500 or more (, IrS Z2371) Loadability (lbs) ----
--7oo (Falex test) Lifespan (seconds) --
-45 (Falex test) Contact angle (to water) -110~
113 degrees (25 degrees Celsius) The Teflon coating is generally processed through the following steps.

i) Degreasing and cleaning with alkali or solvent ii) Preparation by chemical conversion treatment or blasting 5) Coating (air spray, #misplay) Soup) Drying (evaporating the solvent) ■) Baking (baking the coating film) vi ) Cooling The film thickness can be increased by repeating the above coating and drying steps several times.

7 is a longitudinal sectional view showing the detailed structure of the handle unit 2I in the handle post 8 in FIG. 5, and FIG. 8 is a plan view of FIG. 7.

7 and 8, the handle unit 21 has its bracket 23 connected to the slide rail 28 (the first
By being slidably fitted into the frame 20 (see Figure), it is attached to the frame 20 so that it can be positioned in the left and right directions**.

The steering shaft (rotating shaft of the handle 15)
24 is rotatably supported by a bearing portion 31.32 formed at a 2m point of the bracket 23, and
The axial position is regulated by a suitable removal stop means (not shown).

Further, at a predetermined position of the bracket 23, a rotation range vE (handle rotation angle) of the steering shaft 24 is provided.
An anti-topper 33 is provided for regulating the.

A drive gear 34 having coaxial bevel gear teeth is fixed to the lower end of the steering shaft 24.

On the other hand, a steering shaft 24 is mounted on the bracket 23.
A bearing portion 35 is provided at right angles to the lever member 35, and a lever member 37 provided with a driven gear 36 having a bevel tooth profile that meshes with the driving gear 34 is rotatably supported on the bearing portion 35.

The lever member 37 is formed with an arm portion 38 having a predetermined arm length (radius).

A ball joint 40 is provided at the tip of the arm portion 38.
An inner 39 of the steering cable 16 is connected via the steering cable 16.

The outer 41 of the steering cable 16 is fitted and held by an outer support member 42 fixed to the bracket 23.

As the steering cable 1G, a push-pull type control cable is used which has a structure that can smoothly transmit operating force not only by pulling but also by pushing.

Note that the reference numeral 43 indicates a tension spring for automatically setting the handle angle and causing self-circling.

Each member constituting the handle post 8, such as the frame 20, the base bracket 25, the handle unit 21, etc., except for the handle 15, is covered by the handle post cover 22.

This handle post cover 22 is attached using the frame 20, deck 2, etc., and constitutes the surface of the handle post 8.

According to the embodiment described above, the following effects were obtained.

i) Since the frame 20 of the handle post 8 is made of a welded structure made of light alloy members such as aluminum, the handle post 8
We were able to reduce the weight of the

i) Since the sliding contact surface of the slide rail 28 of the frame 20 is coated with Teflon, the sliding characteristics, abrasion resistance, and corrosion resistance of the slide rail can be improved, and the cost can be reduced by reducing the number of processing steps. It was possible to obtain a guide sliding mechanism for the handle unit 21 that can easily maintain the dimensional accuracy of the sliding fitting portion.

5) Since the Teflon coating has water repellency,
By immediately repelling adhering water droplets, it was possible to eliminate the adhesion of salt, etc. in seawater, and it was possible to further effectively improve the aforementioned sliding properties, abrasion resistance, corrosion resistance, dimensional accuracy, etc.

iv) Since the slide rail 28 is coated with Teflon, there is no need to join a lining member to the sliding portion, and the range of material selection can be expanded when the frame 20 is made into a welded structure.

vi) Since the frame 20 is welded and assembled after Teflon coating is applied to the slide rail 28, and then the entire structure is chromate treated, the number of manufacturing steps for the frame 20 can be significantly reduced, and the corrosion resistance of the frame can be improved. was completed.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, a handle post for a small personal watercraft has a structure in which a frame to be attached to a deck is provided with a slide rail in the left and right directions, and a handle unit is attached to the slide rail so as to be movable in the left and right directions. In this frame, at least the sliding contact area with the handle unit on the surface of the slide rail is coated with Teflon, and the frame including the slide rail is made of a light alloy welded assembly structure, so that the sheet metal rail member is not used. With a simple and inexpensive structure that does not require a smooth sliding of the handle unit, it is possible to ensure the abrasion resistance and rust prevention function of the sliding contact area. Provided is a frame for a handle post for a small personal watercraft that can easily ensure alignment accuracy.

According to another aspect of the present invention, in a method for manufacturing a frame of a handle post for a small personal watercraft, the frame is provided with a slide rail in the left and right directions on a frame attached to a deck, and a handle unit is attached to the slide rail so as to be movable in the left and right directions. , the slide rail and other frame members are made of a light alloy, the surface of the slide rail is coated with Teflon at least in the sliding contact area with the handle unit, and then the slide rail and other frame members are assembled by welding, Next, the frame of this welded structure is subjected to anti-rust treatment such as chromate treatment, so the handle unit can slide smoothly and with a simple and inexpensive structure that does not require sheet metal rail members. Provided is a method for manufacturing a frame for a handle post for a small personal watercraft, which can ensure abrasion resistance and rust prevention function of the contact part, and also easily ensure fitting accuracy between the slide rail and the handle unit. be done.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a frame of a handle post for a small watercraft according to an embodiment of the present invention, FIG. 2 is an exploded perspective view showing a coupling structure for coupling the frame of FIG. 1 to a deck, and FIG. The figure is a bottom view showing the slide rail in the frame of Figure 1, Figure 4 is a cross-sectional view taken along line IV-IV in Figure 3, and Figure 5 shows a handle post having the frame of Figure 1. Fig. 6 is a longitudinal cross-sectional view showing an example of the structure of a small personal watercraft shown in Fig. 5;
FIG. 8 is a longitudinal sectional view showing an example of the structure of the handle unit of the small personal watercraft shown in the figure, and FIG. 8 is a plan view of the handle unit shown in FIG. 7. Below, symbols representing main components in the drawings are listed. 1-1---hull, 2--==-deck, 7-----kittle, 8--handle post, 10-----
-1 engine, 12--propulsion unit, 15--11 handle, 16--steering cable, 2
0-m-frame (handle post), 2 OA-=-
=- Rear vibe member (frame), 20 B--
- Front vibe member (frame), 21 - Handle unit, 22 - Handle bottom cover, 2
3-Bracket (handle unit), 24----Steering shaft, 25-Base bracket, 26-
Under bracket, 27'-=-deck surface, 28~
Slide rail, A-111-masking range (slide rail).

Claims (2)

[Claims] (1) In a frame of a handle post for a small personal watercraft having a structure in which a frame to be attached to a deck is provided with a slide rail in the left and right direction, and a handle unit is attached to the slide rail so as to be movable in the left and right directions, at least A frame for a handle post for a small personal watercraft, characterized in that a Teflon coating is applied to a sliding contact area with a handle unit, and the frame including the slide rail is made of a light alloy welded assembly structure. (2) A method for manufacturing a frame for a handle post for a small personal watercraft having a structure in which a horizontal slide rail is provided on a frame to be attached to a deck, and a handle unit is attached to the slide rail so as to be movable in the left and right direction. The other frame members are made of light alloy, and after applying a Teflon coating to at least the sliding contact area with the handle unit on the surface of the slide rail, the slide rail and other frame members are assembled by welding, and then this welded structure A method for manufacturing a handle post frame for a small personal watercraft, characterized in that the body frame is subjected to anti-rust treatment such as chromate treatment.