JPH04137231U - Engine throttle valve operating device - Google Patents

Abstract

(57) [Summary] [Purpose] Engine throttle valve operation that allows the two inner Bowden wires for valve opening and valve closing to be reliably kept in tension, and forcibly open and close the throttle valve without play. Getting the equipment. [Structure] The valve opening Bowden wire 5 and the valve closing Bowden wire 7 are connected to the shaft 3 of the throttle valve 2 for forced opening/closing. are connected slidably in the axial direction, and a spring 13 is elastically inserted between the body attachment fitting 9 and the end fitting 14 to apply a tensile force to the inner 6 to remove play in the Bowden wire 5.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea relates to improving the throttle valve operating device for engines such as outboard motors. Ru.

0002

[Conventional technology]

Outboard engines have a butterfly-shaped throttle valve that opens and closes the intake passage of the carburetor. Connect the Bowden wire for valve opening and the Bowden wire for valve closing to the shaft of Force the throttle valve to open and close in both the open and close directions to ensure it opens. I am able to close it. What are Bowden wire for valve opening and Bowden wire for valve closing? If you don't make sure that there is no play, you won't be able to open and close the door reliably.

0003 Therefore, I fixed the outer end fitting of one Bowden wire to the tip of the cantilever beam. The deflection of the cantilever beam keeps the inner taut and prevents play. For example, see Utility Model Application Publication No. 1-149536.

0004

[Problem that the idea aims to solve]

The cantilever beam flexes in an arc around the fixed portion of the base. For this reason, Borden The end fitting that attaches the outer end of the wire has been gouged, making it difficult to move, and the inner There is a problem in that the tension is not sufficient and play cannot be reliably prevented.

[0005] In view of this point, this invention has two Bowden wires for opening and closing the valve. This allows you to reliably keep the throttle valve tensioned and tighten the throttle valve without play. The object of the present invention is to obtain an engine throttle valve operating device that can open and close the engine.

[0006]

[Means to solve the problem]

In order to achieve the above object, the engine throttle valve operating device of this invention The bowden wire for valve opening and the bowden wire for valve closing are attached to the shaft of the throttle valve. This is a device that connects the wires and forcibly opens and closes them. Connect the outer end fittings so that they can slide freely in the axial direction, and insert a bar between the fuselage mounting bracket and the end fittings. The play of the Bowden wire was removed by applying tension to the inner wire by inserting it elastically. be.

[0007]

[Effect]

The body attachment fittings and the end fittings are constantly biased by a spring in the direction of pulling them apart. others This allows the inner part of one Bowden wire to be kept taut while the other - The inner part of the Bowden wire is also kept taut, and the Bowden wire for opening the valve and the Bowden wire for closing the valve are kept in tension. You can prevent the Bowden wire from playing.

[0008]

【Example】

An embodiment of the present invention will be described below with reference to FIG. A butterfly-shaped throttle valve 2 is provided in the intake passage 1 of the carburetor. The valve 2 is attached to a shaft 3, and by rotating the shaft 3, , opens and closes the intake passage 1 to control the engine. At one end of shaft 3 , an arm 4 extending on both sides is attached, and an inner 6 of the Bowden wire 5 for opening the valve is attached. and the inner 8 ends of the valve-closing Bowden wire 7 are connected to both ends of the arm 4, respectively. . Insert the fuselage mounting bracket 9 into the hole 11 of the fuselage 10 and attach it with the circlip 12. Let's go. Insert the spring 13 into the fuselage mounting bracket 9, and insert the end bracket 14 in a slidable manner. Enter. Then, attach the end of the outer 15 of the valve opening Bowden wire 5 to the end fitting 14. Insert and install. The end fitting 17 of the outer 16 of the Bowden wire 7 for valve closing is It is attached to the body 10 with a circlip 18. Outer 15 of Bowden wire 5 for valve opening The other end and the other end of the outer 16 of the valve-closing Bowden wire 7 are each fitted with a fastening fitting 19. , 20, and is attached to the fuselage 21. In addition, the inner 6 of the Bowden wire 5 for opening the valve and the closing The other end of the inner 8 of the Bowden wire 7 for the valve is a throttle grip that is rotated. 22 or attached to the tip of the arm 24 protruding from both sides of the throttle lever 23 . It should be noted that the spring 13 has a greater elasticity than the pulling force of the inner 6.

[0009] The fuselage mounting bracket 9 and the end bracket 14 are biased by a spring 13 and urged to separate. are doing. This keeps the inner 6 in a taut state and keeps the inner 6 taut. By this, the inner 8 of the valve-closing Bowden wire 7 is also kept in tension. Ru. This allows rotational operation of the throttle grip 22 or throttle lever 23. The shaft 3 rotates and the throttle valve 2 can be opened and closed without delay. . If the inner wire 6 stretches due to use, the length of the Bowden wires 5 and 7 may be adjusted. This saves you the trouble of making adjustments.

0010

[Effect of the idea]

As explained above, this invention is configured as described above, so the fuselage mounting bracket is By springing the end fitting slidably inserted into the fitting, the valve opening board is opened. Keep the inner part of the valve closing wire and the inner part of the valve closing Bowden wire taut. This eliminates the play in the Bowden wire and allows for smooth throttle control without backlash. Can open and close valves. Also, the fuselage mounting bracket and end bracket fit together in a cylindrical shape in the axial direction. Because it is placed on the ground, it can move smoothly. And even if the inner is stretched, the spring is Since the end fittings are pushed apart, there is no need to frequently adjust the length of the Bowden wire attachment part. It often saves maintenance effort.

[Brief explanation of drawings]

FIG. 1 is an overall longitudinal sectional view of main parts showing an embodiment of the present invention.

[Explanation of symbols]

2 Throttle valve 3 Shaft 5 Bowden wire for valve opening 6 Inner 7 Bowden wire for valve closing 9 Aircraft mounting bracket 13 Spring 14 End fittings 15 Outer

Claims (1)

[Scope of utility model registration request] [Claim 1] A valve-opening Bowden wire and a valve-closing Bowden wire are connected to the shaft of a throttle valve for forced opening and closing, and the fuselage mounting bracket and outer end fitting of one Bowden wire are slid in the axial direction. A throttle valve operating device for an engine, which is freely connected, and a spring is elastically inserted between a fuselage mounting fitting and an end fitting to apply a tensile force to the inner part to remove play in a Bowden wire.