KR101876933B1 - Handle for sealing door - Google Patents

Abstract

The present invention relates to a door handle for a closed door, and more particularly, to a door handle for a closed door, A handle shaft fixed to the handle housing at one end thereof to rotate while forming an axis when the handle housing rotates; And a ball bearing portion for smoothly rotating the handle housing, wherein the ball bearing portion is closely fixed to an outer circumferential surface of the handle shaft; An outer ring spaced apart from the outer circumferential surface of the handle shaft and fixedly secured to a region of the door; And a ball received between the inner ring and the outer ring. The door handle for a closed door according to the present invention can smoothly rotate the door handle without a large force when the user opens and closes the door, thereby enhancing user convenience and minimizing noise generation during rotation of the door handle have.

Description

{Handle for sealing door}

The present invention relates to a door handle for a closed door.

An enclosed door is a kind of door used for a device or an apparatus which requires complete interception between the inside and the outside with respect to the door, and means a door that improves the sealing force of the door.

In order to increase the sealing force when the door is closed, the closed door is typically structured such that the door is pressed against the corresponding device or mechanism when the door handle rotates. For example, the closed door is applied to the steam convection oven have.

The steam convection oven refers to a cooking device capable of cooking foods such as various kinds of steamed dishes using heat and steam, and the steam convection oven is used for cooking A door provided on a front portion of the main body to open and close an opened front portion of the cooking chamber, an operating portion provided on one side of the main body to adjust a temperature of the cooking chamber, And a steam supply unit for supplying heat and steam to the inside of the cooking chamber of the main body. The door of the steam convection oven is usually provided with a door handle rotatable to open and close the door, and the user can open and close the door by rotating the handle of the door handle by hand.

However, the closed door such as the door of the steam convection oven is forced to be pulled toward the door to the shaft of the door handle when the door is locked or unlocked in order to ensure the hermeticity of the door, There is a problem that the rotation of the door handle is not smooth due to the frictional force of the door handle and the contact portion of the door, and that the door handle must be forcedly rotated by applying a large amount of force. Further, unpleasant noise occurs when the door handle rotates, There is a problem that it is easily worn and causes a failure.

An object of the present invention is to provide a door handle for a closed door that can smoothly rotate the door handle without a large force when a user opens and closes the door, and can minimize noise during rotation of the door handle.

According to an aspect of the present invention, there is provided a door handle for a closed door, including: a handle housing having a knob shape for allowing a user to hold and rotate the handle; A handle shaft fixed to the handle housing at one end thereof to rotate while forming an axis when the handle housing rotates; And a ball bearing portion for smoothly rotating the handle housing, wherein the ball bearing portion is closely fixed to an outer circumferential surface of the handle shaft; An outer ring spaced apart from the outer circumferential surface of the handle shaft and fixedly secured to a region of the door; And a ball received between the inner ring and the outer ring.

The door handle for a closed door according to the present invention can smoothly rotate the door handle without a large force when the user opens and closes the door, thereby enhancing user convenience and minimizing noise generation during rotation of the door handle have.

1 is a perspective view of an example of a door handle for a closed door according to the present invention.
2 is a transparent perspective view of an example of a door handle for a closed door according to the present invention.
3 is an exploded view of an example of a door handle for a closed door according to the present invention.
4 is a side view of an example of a door handle for a closed door according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The present invention relates to a door handle for a closed door, and more particularly, to a door handle for a closed door, A handle shaft fixed to the handle housing at one end thereof to rotate while forming an axis when the handle housing rotates; And a ball bearing portion for smoothly rotating the handle housing, wherein the ball bearing portion is closely fixed to an outer circumferential surface of the handle shaft; An outer ring spaced apart from the outer circumferential surface of the handle shaft and fixedly secured to a region of the door; And a ball received between the inner ring and the outer ring.

In the present invention, the handle housing is formed in the form of a knob so that the user can hold the knob by hand and rotate the handle. For example, the handle housing may have a shape of 'A' when viewed from the side, and various knobs may be used. Preferably, the handle housing has a space formed therein for receiving a part of the handle shaft and a ball bearing portion in order to protect the handle shaft and the ball bearing portion from external impacts and to form the appearance of the door handle neatly and beautifully Do. The material of the handle housing is not particularly limited, and may be made of various materials such as metal and plastic.

In the present invention, the handle shaft is fixed to the handle housing at one end thereof, and rotates while forming a shaft when the user rotates the handle housing, and the other end of the handle shaft is fixed to the cam located inside the door . The handle shaft may be fixed to the handle housing by a method in which one end of the handle shaft is coupled to a separate shaft fixing portion, It is preferable that the shaft fixing portion is fixed by fixing the shaft fixing portion to which the handle shaft is coupled after the handle shaft is secured to the handle housing.

In the present invention, the ball bearing portion smoothly rotates the handle housing, and the ball bearing portion is closely fixed to the outer circumferential surface of the handle shaft. An outer ring spaced apart from the outer circumferential surface of the handle shaft and fixedly secured to a region of the door; And a ball received between the inner ring and the outer ring. Accordingly, when the user rotates the handle housing, the handle shaft coupled to and fixed to the handle housing rotates together with the inner ring of the ball bearing portion closely fixed to the outer peripheral surface of the handle shaft. At this time, The outer side ring is spaced apart from the handle shaft, and is fixed in close contact with the door. The door handle for a closed door according to the present invention can smoothly rotate the door handle by applying the ball bearing portion and minimizes noise generation during operation of the handle unlike the conventional door handle.

In the present invention, the ball bearing portion is not particularly limited and may be a thrust ball bearing or a radial ball bearing. In this case, when the ball bearing is accommodated in the inner space of the handle housing, the inner space of the handle housing is inevitably opened. Therefore, in order to smoothly rotate the handle housing, (d) is preferably at least smaller than the diameter (D) of the inlet of the interior space of the handle housing, so that external contaminants can flow into the interior space through the open mouth of the handle housing It is more preferable to apply a thrust ball bearing to the ball bearing portion in order to prevent the accumulation of the thrust ball bearing as much as possible.

More preferably, the ratio of the diameter (D) of the inlet of the inner space of the handle housing to the largest diameter (d) of the outer ring is 1 <D / d? 1.5. When the D / d value is 1, the diameter of the outer ring is the same as the diameter of the inlet of the handle housing, so that it is difficult to smoothly rotate the handle housing. When the D / d value exceeds 1.5, The gap between the outer rings of the ball bearing portion becomes excessively large, and contaminants from the outside easily flow into the inner space through the gap between the inlet of the handle housing and the outer ring of the ball bearing portion.

The door handle for a closed door according to the present invention can smoothly rotate the door handle without a large force when the user opens and closes the door, thereby enhancing user convenience and minimizing noise generation during rotation of the door handle have.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following examples and figures are merely illustrative of the present invention and are not intended to limit the scope of the present invention.

FIG. 1 is a perspective view of an example of a door handle for a closed door according to the present invention, FIG. 2 is a transparent perspective view of an example of a door handle for a closed door according to the present invention, and FIG. FIG. 4 is a side view of an example of a door handle for a closed door according to the present invention. FIG. 4 is an exploded view of an example of a door handle for a closed door.

1 and 2, a door handle 100 for a closed door according to an embodiment of the present invention includes a handle housing 110 having a letter shape, a handle shaft 110 coupled to the handle housing 110, (120) and a ball bearing part (130) accommodated in an inner space of the handle housing (110).

3 and 4, the handle shaft 120 is coupled to the shaft fixing portion 121 of the 'A' shape, and the handle shaft 120 is engaged with the shaft 120, The fixing portion 121 is received in the handle housing 110 so that the handle shaft 120 can be firmly fixed to the handle housing 110. [

The ball bearing unit 130 is a thrust ball bearing and includes an inner ring 131 positioned in an inner side direction of the handle housing 110 when coupled to the handle housing 110, And a plurality of balls 133 positioned between the inner ring 131 and the outer ring 132. As shown in Fig.

4, the inner ring 131 of the ball bearing 130 is closely attached to the outer circumferential surface of the handle shaft 120 and rotates together with the handle shaft 120 when the handle housing 110 rotates The outer ring 132 of the ball bearing unit 130 is spaced apart from the handle shaft 120 and is tightly fixed to the surface of the door 200. When the handle shaft 110 rotates, As shown in Fig. The outer diameter 132 of the outer ring 132 is smaller than the diameter D of the inner diameter of the inner space of the handle housing 110, It can be seen that the disturbance does not occur.

As described above, those skilled in the art will understand that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It will be understood by those skilled in the art that the present invention may be embodied in many other specific forms without departing from the spirit or scope of the invention as defined by the appended claims and their equivalents. .

100: Door handle for enclosed door
110: handle housing 120: handle shaft
121: shaft fixing portion 130: ball bearing portion
131: inner ring 132: outer ring
133: The ball

Claims (4)

A handle housing in the form of a handle for allowing a user to hold and rotate the handle, the handle housing having an inner space open at an inlet; A handle shaft fixed to the handle housing at one end thereof to rotate while forming an axis when the handle housing rotates; And a thrust ball bearing type ball bearing which is accommodated in an inner space of the handle housing and positioned so that the handle shaft penetrates the center of the handle housing and smoothly rotates the handle housing,
Wherein the ball bearing portion has an inner ring fixedly attached to an outer peripheral surface of the handle shaft, an outer ring spaced from an outer peripheral surface of the handle shaft,
Wherein the ratio of the diameter D of the inlet of the inner space of the handle housing to the largest diameter d of the outer ring of the ball bearing is 1 < D / d &lt; 1.5.
delete delete The method according to claim 1,
The handle shaft is fixed to the handle housing in such a manner that one end of the handle shaft is coupled to a separate shaft fixing portion and a shaft fixing portion to which the handle shaft is coupled is received in a space formed in the handle housing, Wherein the door handle is a closed door.

Images