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Apparatus for opening door

A door-opening device and push rod technology, which is applied to household refrigeration devices, door/window accessories, lighting and heating equipment, etc., can solve damage, increase the allowable current, increase the stroke and extension force of the door-opening device 50, etc. Problems, to avoid impact, improve life, reduce load effect

Inactive Publication Date: 2006-11-22
NTN CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to increase the stroke and extension force of the door opener 50, it is necessary to increase the allowable current, so there is a problem that it is difficult to realize miniaturization.
In addition, there is also a problem that in the action of opening the door 65, that is, when the tooth portion 54a of the rack 54 meshes with the pinion 59b, if an external force is applied to the door 65, the gear mechanism 55 in the housing 51 will etc. are subject to direct impact, which will cause damage

Method used

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  • Apparatus for opening door

Examples

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Embodiment Construction

[0035] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Fig. 1 is a perspective view showing a refrigerator equipped with a door opening device according to the present invention, figure 2 (a) is a longitudinal sectional view showing the first embodiment of the door opening device of the present invention, figure 2 (b) is figure 2 (a) side view, figure 2 (c) is along figure 2 (a) A cross-sectional view taken along line A-A.

[0036] In Fig. 1, the door opener 3 for opening the door 2 of the refrigerator 1 is installed on the upper part of the main body of the refrigerator 1 on the opposite side of the door hinge 4, once the contact switch 5 arranged on the front surface of the door 2 is pressed, the door opener 3 will It can move and push away the pressed part 6 protruding from the door 2. The force used to open the door 2, that is, the force extended by the push rod 14 of the door opening device 3 mus...

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Abstract

The invention provides a door opening device, which can shorten the opening time of the door, realize miniaturization, increase the extension stroke and extension force, and improve the service life. The rotation of the motor (7) is transmitted to the pinion (12) through the reduction mechanism (8, 10), and is converted into a linear motion by the rack (13a) meshed with the pinion (12). ) between the plunger (13) that advances and retreats together and the push rod (14) that is inserted on the plunger (13) is equipped with a spring (15), and the advancement of the plunger (13) compresses the spring (15) until reaching In order to accumulate the required elastic force, under the restoring force of the spring (15), the push rod (14) stretches out at a high speed faster than the advancing speed of the plunger (13), thereby opening the door ( 2).

Description

technical field [0001] The present invention relates to an electric door opener for automatically opening the doors of kitchen sinks, refrigerators, etc. by operating a touch switch. Background technique [0002] A common kitchen sink or storage, for example, the door of the refrigerator in the refrigerator is a revolving door that is freely rotatable at one end and supported in front of the main body of the refrigerator through hinges, especially most of the general households use this kind of door . In order to improve the airtightness of the inner peripheral edge of the door in the closed state, a gasket with a magnet is usually provided, and the magnet is attracted to the front of the refrigerator main body. Therefore, a certain amount of force is required to open the door manually, which is especially difficult for children with little strength and people with limited physical activity. [0003] In order to alleviate the above difficulties, an electric door opening de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E05F15/12F25D23/02
Inventor 小池孝志石河智海
Owner NTN CORP
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