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Door opening device

A technology for door openers and revolving doors, which is applied to switches with braking devices, door/window accessories, wing leaf parts, etc. It can solve the problems of unchangeable strokes, unusable strokes, and unsuitable strokes to prevent overloading Effect

Inactive Publication Date: 2003-02-19
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No matter what kind of solenoid door opener, once the stroke of the extrusion rod is set, not only the stroke cannot be changed, but also when it is in other positions, the stroke is not suitable and cannot be used.

Method used

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Experimental program
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Embodiment Construction

[0204] Hereinafter, embodiments of the present invention will be described in detail sequentially with reference to the drawings. figure 1 It is a vertical sectional view showing the first embodiment of the door opener of the present invention.

[0205] exist figure 1 Among them, the door opener 1 is equipped with a motor 2, a screw shaft 4 that is housed in a cylindrical cavity 3 with a bottom and transmits the rotation of the motor 2, a nut 5 that is screwed with the screw shaft 4 and inserted into the cavity 3, and is housed The first spring 6 is located between the nut 5 and the shoulder 3 a of the cavity 3 , and the second spring 7 is accommodated between the bottom 3 b of the cavity 3 and the motor 2 . In addition, the motor 2 is elastically supported by the second spring 7 in a retractable manner. On the outer periphery of the screw shaft 4, a helical rotating groove 4a is formed, which is slidably matched with the rotating groove 5a formed on the inner periphery of t...

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Abstract

The present invention provided a door opener, by which a door open-close unit is miniaturized and lightened and a door can be opened efficiently by only one of the operation of a touch switch and which is silent. In the door opener 1 opening the rotary type door in which one end section is supported rotatably by a hinge, the door opener 1 has a motor 2 housed in a bottomed cylindrical housing 3, a screw shaft 4, to which the rotation of the motor 2 is transmitted, a nut 5 screwed to the screw shaft 4 and internally inserted into the housing 3, the first spring 6 housed between the nut 5 and the shoulder section 3a of the housing 3 and the second spring 7 housed between the bottom section 3b of the housing 3 and the motor 2, and the rotation of the motor 2 is converted into the linear motion of the nut 5. The nut 5 is formed to the housing 3 retractively and irrotationally and the screw shaft 4 is formed integrally with an output shaft for the motor 2.

Description

technical field [0001] The invention relates to an electric door opener which can automatically open a cabinet door or a refrigerator door by using a switch operation. Background technique [0002] The door of a cabinet or a storage room, taking the cold room door in a cold storage as an example, the general type is a rotating type in which one end in front of the main body of the cold storage is freely rotatable and supported by a hinge, especially in general households. types. This improves the tightness in the closed state, and on the inner peripheral portion of such a door there is provided a gasket with a magnet capable of attracting the door to the front of the main body of the refrigerator. Therefore, it is necessary to have a certain degree of operating force to open the door manually, which increases the burden especially for weak children or people who cannot be voluntarily physically. [0003] In order to alleviate this burden, the known and partially practical ...

Claims

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Application Information

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IPC IPC(8): E05F5/06E05F15/603
Inventor 野尻博海山本宪小池孝誌永野佳孝辻本明德大西一郎酒井贤一杉野吉美石河智海
Owner PANASONIC CORP
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