JPS5838424Y2 - adjustable link coupling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a link coupling device that allows a sliding movement to be performed by a link mechanism and is adjustable in the operating direction.

For example, a valve that opens and closes by a linked sliding motion,
If you want to arbitrarily adjust the opening/closing position (i.e. sliding position) of the valve, use a turnbuckle on the connecting rod of the link connection, or make the connecting joint of the link lever adjustable. It is.

For small equipment, turnbuckle-type connections make adjustment operations extremely difficult or impossible, and adjustment joint-type connections have frictional resistance between the adjustment tool and the joint metal fittings, making it difficult for the link to operate smoothly. It has the disadvantage of lacking.

The present invention is an adjustable joint type, and the link device is configured such that the joint is held in a free engagement type within an engaging member, one end of the engaging member is pressed by a pressing spring, and the other end is received by an adjusting screw. This makes it easy to adjust the operating position of the operating body (for example, a valve, etc.) in the above-mentioned adjustable link coupling device for a sliding moving body, and also enables smooth link operation. By providing a member, the engaging member is made of a wear-resistant material, and measures against sliding wear of the joint can be taken.Next, the present invention will be described with reference to embodiment drawings.

FIG. 1 is a sectional view showing an embodiment of an adjustable link coupling device according to the present invention, and FIG. 2 is a sectional view taken along line A-A.

An actuating main body 1 (piston valve) is connected to an actuating arm 4 fixed to a drive shaft 5 via a connecting arm 3 by a spherical joint 2.

That is, the piston valve 1 slides from side to side within the valve body 6 (shown by a dashed line) by rotating or swinging the operating arm 40 to open and close the valve hole 7.

The spherical joint 2 consists of a spherical part 21 and a rod part 22, and the spherical part 21 is made of a soft, wear-resistant material with a low coefficient of friction against the joint 2 (for example, polyamide resin or A-B- The spherical joint 20 is housed in the joint holding hole 11 of the engaging member 10 formed of 8 resin, etc. (the spherical joint 20 spherical portion 21 presses the through hole 13 of the engaging member 10 wide open through the adjustment slot 12 of the valve 1). The rod portion 22 protrudes outside the valve 1 and is fixed to the connecting arm 3.

The engagement member 10 is a cylindrical body having the joint holding hole 11 in its center and a through hole 13 communicating with the holding hole 11 from the outside. It is slidably fitted into the member holding hole 15.

The valve end side is pressed by a spring 16 inserted into the bottom of the holding hole 15, and the operating arm 4 side is received by an adjustment screw 17.

Since the drive shaft 5 is fixed to a drive device (not shown), the spherical joint 2 is fixed at a fixed position when the drive shaft 5 is stopped.

Therefore, if the adjusting screw 17 is turned, the valve 1 will be pulled toward the opening side (right side) of the valve hole 7 against the spring 16, and if it is turned back, the valve 1 will be moved by the spring 16 to the side where the valve hole 7 is closed. (to the left).

That is, the position of the valve 1 relative to the valve hole T is adjusted by operating the adjusting screw 17.

FIG. 3 shows an embodiment in which the connecting joint is not a spherical joint as in the above embodiment, but a pin joint, in which a pin joint 23 fixed to the connecting arm 3 is rotatably engaged with an engaging member 24. are doing.

The engaging member 24 is pressed by the spring 16 on the valve end side, and is received on the operating arm 4 side by the adjusting screw 1γ, and the valve position relative to the valve hole is adjusted by screwing in and unscrewing the adjusting screw as described above. Same as example.

In all of the above embodiments, the actuating body is provided with an adjustment device, but depending on the product, it may be convenient to provide the adjusting portion not in the actuating body but in the link portion.

This embodiment is shown in cross section in FIG. The actuating lever 32 of the actuating main body (piston valve) 31 is equipped with an adjusting device similar to the above embodiment, and an engaging member 10 that is pressed by a spring 16 and received by an adjusting screw 11 is attached to the engaging member. One spherical joint 34 of a connecting lever 33 having spherical joints at both ends is fitted, and the other spherical joint 35 is fitted into a joint holding member 36 built into the valve 31 for connection.

Even with this arrangement, the sliding adjustment of the valve 31, that is, the position adjustment of the valve 31 with respect to the valve hole 1, can be easily performed by adjusting the adjusting screw 17.

As described above, according to the adjustable link coupling device according to the present invention, it is the engagement member 10 that is press-held in an adjustable manner,
Since the joint for link connection (2° 23 or 34) is freely engaged in the engaging member 10, the operating pressure that the joint receives when the link is operated is reduced, and the link operation is smooth. If the engagement member is made of a wear-resistant material with a low coefficient of friction (for example, polyamide resin or A-B-8 resin) for the joint, it will not only improve the smoothness of the link operation but also improve the wear resistance of the joint against rotational friction. It becomes something that can be improved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one embodiment of the adjustable link coupling device according to the present invention, Fig. 2 is a sectional view taken along line A-A thereof, and Fig. 3 is a sectional view similar to Fig. 2 showing another embodiment. , FIG. 4 is a sectional view showing still another embodiment. 1... Actuation main body, 2... Spherical joint, 3... Connection arm, 4... Actuation arm, 5... Drive shaft, 10... Engaging member, 16... Pressing spring, 1γ... Adjusting screw, 23... Pin joint, 24...
...Engagement member, 31... Actuation main body, 32...
...Operating arm, 33...Connection lever, 3
4... Spherical joint.

Claims (3)

[Scope of utility model registration request] (1) The actuating body or the actuating lever includes an engaging member held between a pressure spring and an adjusting screw, and the engaging member is freely engaged with a joint provided in a part of the actuating link. Adjustable link coupling device. (2) The adjustable link coupling device according to claim 1, wherein the engaging member is made of a material having a small coefficient of friction with respect to the joint. (3) The adjustable link coupling device according to claim 1, wherein the engaging member is made of a wear-resistant material.