Position restoring apparatus for an open and close device
a technology of open and close device and restoring apparatus, which is applied in the field of valves, can solve the problems of not being able to enter the shop, not being able to meet the special needs of prior art, and not being able to immediately close the valv
Active Publication Date: 2008-05-29
SUN YEH ELECTRICAL IND
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
[0007]A primary object of the present invention is to provide a position return device for an open and close apparatus which is capable of returning the open and close apparatus to the original position thereof rapidly in case of power failure or power off accidentally.
[0008]Other object of the present invention is to provide a position restoring apparatus for an open and close device with which changing the original state of opening or closing manually after power failure or power off accidentally and closing and before the power being on again becomes practically feasible.
Problems solved by technology
However, in case of the valves being required to shut urgently under a condition of emergency and happening to power failure or power off accidentally, how to close the valves immediately is a problem bothering the manufacturers and the users.
Besides, sometimes, the users desire to operate the valves manually but it is not possible for them to enter the shop to operate open or close of the valves.
However, when the valve or any open and close apparatus has to be changed to a state different from the original state before the power being on again, the prior art is incapable of dealing with the special need.
Method used
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first embodiment
[0030]Referring to FIGS. 1 to 13, a position restoring apparatus for an open and close device according to the present invention includes parts described hereinafter.
[0031]A casing base 10 provides a rectangular main member 11 with a hollow seat 12 on top thereof. A long inner hole 111 extends along the axial axis of the main member 11 from the right side to the left side of the main member 11 and a front opening 112 is disposed at the front side of the main member 11 as shown in FIG. 1. A rear opening 113 is disposed at the rear side of the main member 11 to communicate with the inner hole 111. The bottom of the hollow seat 12 is a middle opening 121 communicating with the inner hole 111. A lower opening 114 is disposed at the bottom of the main member 11 corresponding to the middle opening 121 to communicate with the inner hole 111. A gear type speed reducer 122 is received in the hollow seat 12.
[0032]A first side cover 20 is attached to the right end side of the main member 11 wi...
second embodiment
[0046]It is noted that once the handle wheel of the second embodiment is employed, the first projection 812 of the worm gear 80 has to be returned to the original position manually in case of power being on again.
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A position restoring apparatus for an open and close device includes a casing base, a first actuating member, a second actuating member, a first end cover, a second end cover, an output shaft and a motor. The casing base has main member with a hollow seat. The first actuating member has a first disk part with a first block and a first rack at a lateral side of the first block. The second actuating member has a second disk part with a second block and a second rack. The first end cover provides a plurality of first elastic components. The second end cover provides a plurality of second elastic components. The output shaft provides a joining part to mesh with the first and second racks. The motor shaft extends upward a rod part with an electromagnet, a stationary disk member and a movable disk member.
Description
BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention is related to a valve or any other open and close apparatus and particularly to a position restoring apparatus for an open and close device.[0003]2. Brief Description of the Related Art[0004]In order to pursue fast speed and convenience, an open and close function of electrical actuation has been developed by the manufacturers for controlling ball valve, butterfly valve or other types of valves.[0005]However, in case of the valves being required to shut urgently under a condition of emergency and happening to power failure or power off accidentally, how to close the valves immediately is a problem bothering the manufacturers and the users. Besides, sometimes, the users desire to operate the valves manually but it is not possible for them to enter the shop to operate open or close of the valves.[0006]U.S. patent application Ser. No. 11 / 159,685 filed by the present inventor entitled “POSITION RETURN ...
Claims
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IPC IPC(8): F16K31/02
CPCF16K5/0647F16K31/54F16K31/1635F16K31/535F16K31/047F16K31/055
Inventor CHEN, SHUI-CHING
Owner SUN YEH ELECTRICAL IND