JPH0735834Y2 - Tilt cylinder support pin retaining device for outboard motors - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to a tilt cylinder support device for an outboard motor,
In particular, it relates to a tilt cylinder support pin retaining device.

(Prior Art) Generally, in a motor boat or the like, an outboard motor is mounted on the stern of the boat, and the propeller of the outboard motor is rotated in water to navigate.

That is, FIG. 2 is a diagram showing a schematic configuration of the outboard motor, in which the outboard motor 1 is attached to the transom 3a of the hull 3 by the clamp bracket 2. The outboard motor 1 is provided with an engine section 4 for accommodating an engine, a drive shaft section 6 for accommodating a drive shaft for transmitting the rotational force of the engine to the propeller 5, and a propeller arranged below the drive shaft section 6. It is composed of a gear box portion 7 which is rotatably supported.

A swivel case 8 is mounted on the front edge of the drive shaft portion 6 so as to be rotatable about a vertical axis, and an upper portion of the swivel case 8 is mounted on the clamp bracket 2 so as to be swingable about a horizontal axis. There is.

On the other hand, a base 9 is disposed and connected between the left and right clamp bracket side plates 2a, 2a, and a lower end of the tilt cylinder 11 is pivoted to a bearing portion 9a formed on the base 9 by a horizontally extending support pin 10. It is worn. The tip of the piston rod 11a of the tilt cylinder 11 is pivotally attached to the swivel case 8.

By operating the tilt cylinder 11, the outboard motor 1 can be held at the position shown by the solid line in FIG. 2 or the position shown by the chain double-dashed line in accordance with its use condition.

(Problems to be solved by the invention) By the way, in order to prevent the support pin 10 of the tilt cylinder 11 from coming off, when the support pin 10 is moved in the left-right direction, its tip is one side of the clamp bracket side plate, as shown in FIG.
It is designed to come into contact with 2a.

However, the width L between the left and right clamp bracket side plates 2a, 2a for mounting the outboard motor 1 on the transom 3a of the hull is
Due to the relationship of the members arranged between them, it cannot be set to a certain value or less. Therefore, by contacting the support pin to the clamp bracket side plate 2a as described above,
In order to prevent the support pin from slipping out, there is a problem that the width l of the bearing portion 9a that pivotally supports the support pin 10 must be made larger than a value required for its strength.

In view of such a point, the present invention can minimize the width of the bearing portion of the support pin and surely prevent the support pin from slipping out without using a special component. The purpose is to obtain a retaining device.

[Constitution of device]

(Means for Solving the Problem) The present invention is to dispose the clamp bracket side plates on both sides of the base on which the tilt cylinder of the outboard motor is mounted.
On the inner surfaces of the clamp bracket side plates facing each other,
It is characterized in that a projection is provided so as to oppose an end surface of a support pin pivotally mounted on the tilt cylinder.

(Operation) When the tilt cylinder support pin tries to move in the axial direction, the protrusion of the clamp bracket side plate prevents the support pin from moving, so that the support pin is securely prevented from coming out, and the width of the bearing portion is strengthened. It can be the minimum necessary.

(Embodiment) An embodiment of the present invention will be described below with reference to FIG.

In Fig. 1, left and right clamp bracket side plates 2a, 2a
A base 9 for supporting the tilt cylinder 11 and the like is arranged between them, and a bearing portion provided on the base 9
Left and right ends of a support pin 10 for supporting the tilt cylinder 11 are pivotally supported by 9a. The base end of the tilt cylinder 11 is pivotally attached to the center of the support pin 10.

On the other hand, on the inner surfaces of the left and right clamp bracket side plates 2a facing each other, projections 12 are formed on the same axis as the support pins 10 so as to project toward the ends of the support pins.

Then, when the support pin 10 slightly moves in the axial direction, the end portion of the support pin 10 comes into contact with the projection 12 and further movement is prevented, and the support pin 10 is prevented from slipping out. Therefore, in order to prevent the support pin 10 from slipping out, it is not necessary to increase the width of the bearing portion, and the strength can be minimized to reduce the cost.

[Effect of device]

As described above, in the present invention, the inner surface of the clamp bracket side plate is provided with the projection facing the end surface of the support pin for supporting the tilt cylinder, so that the projection prevents the support pin from moving in the axial direction. The pin is securely prevented from coming off. Therefore, it is not necessary to unnecessarily widen the width of the bearing portion that pivotally supports the support pin, and it is possible to reduce the weight and reduce the cost, and also to use a special device for preventing the support pin from being pulled out. It produces effects such as unnecessary.

[Brief description of drawings]

FIG. 1 is an enlarged partial cross-sectional view of a tilt cylinder support pin retaining device of the present invention, FIG. 2 is a schematic configuration diagram showing a mounting state of an outboard motor to a hull, and FIG. 3 is an exploded perspective view of a clamp bracket portion, FIG. 4 is an enlarged sectional view of a conventional tilt cylinder pivoting portion. 1 ... Outboard motor, 2 ... Clamp bracket, 2a ... Clamp bracket side plate, 3 ... Hull, 9 ... Base, 9a ...
… Bearing, 10 …… Support pin, 11 …… Tilt cylinder,
12 ... Protrusion.

Claims (1)

[Scope of utility model registration request] Claims: 1. A clamp bracket side plate is provided on both sides of a base on which a tilt cylinder of an outboard motor is mounted, and a support pin pivotally attached to the base is mounted on inner surfaces of the clamp bracket side plate facing each other. A tilt cylinder support pin retaining device for an outboard motor, which is provided with a protrusion protruding toward the end face.