JPH0629505U - Liquid crystal display opening / closing mechanism - Google Patents

Abstract

(57) [Abstract] [Purpose] Makes it easy to open and close the liquid crystal display unit provided in the housing and makes it difficult to rotate when operating the panel. A notch 3a having a semicircular cross section is formed in a part of the outer circumference of the rotary shaft 3 of the liquid crystal display unit 5 in the circumferential direction, and the notch 3a is slidably contacted with the outer circumference of the rotary shaft 3 at the position of the notch 3a for rotation. A semicircular load component 7 for applying a load is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a liquid crystal display opening / closing mechanism for opening / closing a liquid crystal display provided on an electrocardiograph or the like in a housing.

[0002]

[Prior art]

 For example, the liquid crystal display unit provided in the electrocardiograph has conventionally been attached to the housing 1 as shown in FIGS. That is, the rotating shaft 3 is rotatably supported by the pair of bearings 2 provided in the housing 1. A liquid crystal display unit 5 is fixed to both ends of the rotary shaft 3 which project to the outside of the bearing 2 via an arm 4, and the liquid crystal display unit 5 rotates together with the rotary shaft 3 in the directions of arrows A and B. It is movable. Further, the display surface 6 of the liquid crystal display unit 5 is provided on the housing 1 side, and when the liquid crystal display unit 5 rotates in the direction of arrow B, the display surface 6 comes into contact with the upper surface of the housing 1 and closes. It is designed to be used. At the time of use, the liquid crystal display unit 5 is rotated in the direction of arrow A so as to stand upright at substantially right angles to the housing 1.

[0003]

[Problems to be solved by the device]

 A liquid crystal display unit 5 provided on the electrocardiograph is usually provided with a touch panel (not shown), and the touch panel is pressed during operation. Therefore, it is necessary to increase the rotational resistance of the rotary shaft 3 so that the liquid crystal display unit 5 does not move when pressed. However, when the rotation resistance is increased, the opening / closing operation of the liquid crystal display unit 5 becomes heavy, which causes a problem that the operability is deteriorated.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a liquid crystal display unit opening / closing mechanism in which the liquid crystal display unit can be easily opened / closed and is not easily rotated during panel operation. .

[0005]

In order to achieve the above object, the present invention provides a liquid crystal display unit, one end of which is fixed to a rotating shaft rotatably supported on a housing, with respect to the housing. In a liquid crystal display opening / closing mechanism that opens and closes by rotating, a notch is formed in a part of the outer circumference of the rotating shaft in the circumferential direction, and a sliding contact is made with a part of the outer circumference of the rotating shaft at the position of the notch, thereby rotating It is characterized by the provision of load parts that give

[0006]

[Action]

 According to the above configuration, when the liquid crystal display unit is opened and erected on the housing, the surface of the rotating shaft on which the notch is not formed is in sliding contact with the load component, thereby increasing the rotating force. can do. Therefore, when the panel is pressed, the liquid crystal display becomes difficult to move. Further, when the liquid crystal display unit is closed, the load component gradually comes into contact with the cutout portion of the rotary shaft, so that it can be rotated lightly.

[0007]

【Example】

 An embodiment of the liquid crystal display opening / closing mechanism of the present invention will be described below with reference to the drawings.

1 to 3 show the configuration of an embodiment of the present invention. In these figures, portions corresponding to those of the conventional example shown in FIGS. 4 and 5 are designated by the same reference numerals, and the description thereof will be omitted as appropriate. The feature of this embodiment is that a notch 3a is formed in a part of the outer circumference of the rotary shaft 3 in the circumferential direction, and a substantially semi-circular load component 7 that slidably contacts the outer circumference of the rotary shaft 3 at the position where the notch 3a is formed. It is in the point provided.

The notch 3a is formed inside the load component 7 of the rotary shaft 3 in a substantially semicircular cross section. The load component 7 is formed in the shape of a semi-circular collar, made of Delrin, and is in sliding contact with the outer periphery of the rotary shaft 3 with frictional resistance. The load component 7 is fixed to a pedestal 8 provided on the support body 2 by a screw 9, and the arm 4 of the liquid crystal display unit 5 is fixed by a screw 10 to a flat surface portion 3b formed at one end of the rotating shaft 3. ing. When the liquid crystal display unit 5 rotates in the direction of arrow B and comes into contact with the upper surface of the casing 1 and closes, the portion where the cutout portion 3a of the rotating shaft 3 is formed is the inner periphery of the load component 7. Facing each other. When the liquid crystal display unit 5 is rotated in the direction of arrow A and opened, the contact area between the load component 7 and the outer peripheral surface of the rotary shaft 3 where the cutout 3a is not formed gradually increases.

The radial cutout surface of the cutout portion 3 a is inclined at a slight angle in the clockwise direction with respect to the surface of the liquid crystal display portion 5 when the liquid crystal display portion 5 is closed, and is not cut out. A part of the outer circumference of the rotary shaft 3 is in sliding contact with a part of the inner circumference of the load component 7, so that the load part 7 is prevented from being twisted during turning.

According to this embodiment, since the frictional resistance between the rotary shaft 3 and the load component 7 is small when the liquid crystal display unit 5 is opened, the liquid crystal display unit 5 can be easily rotated. Further, when the liquid crystal display unit 5 is erected at a substantially right angle to the housing 1, the frictional resistance between the rotary shaft 3 and the load component 7 is large, so that the liquid crystal display unit 5 does not move even if it is pressed during panel operation. It is easier and easier to operate.

[0012]

[Effect of device]

 As described above, according to the liquid crystal display opening / closing mechanism of the present invention, the rotary shaft that rotatably supports the liquid crystal display is provided with the notch, and the load slidingly contacting the outer periphery of the rotary shaft at the position of the notch is provided. Since the parts are provided, the resistance when opening and closing the liquid crystal display is small and can be opened and closed easily.When the liquid crystal display is erected during use, the rotation resistance is large and it is difficult to rotate when operating the panel. The operability is improved.

[Brief description of drawings]

FIG. 1 is a view taken in the direction of arrow C in FIG. 2, showing the configuration of the main part of an embodiment of a liquid crystal display opening / closing mechanism of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a perspective view showing a configuration of an end portion of the rotary shaft of FIG.

FIG. 4 is a side view showing the configuration of an example of a conventional liquid crystal display opening / closing mechanism.

5 is a plan view of FIG.

[Explanation of symbols]

 1 Case 3 Rotating shaft 3a Notch 5 Liquid crystal display 7 Load parts

Claims (1)

[Scope of utility model registration request] 1. A liquid crystal display unit opening / closing mechanism for opening and closing a liquid crystal display unit, one end of which is fixed to a rotation shaft rotatably supported on a casing, with respect to the casing, A liquid crystal display opening / closing mechanism, characterized in that a notch is formed in a part in the circumferential direction, and a load component that applies a rotational load is provided by slidingly contacting a part of the outer periphery of the rotary shaft at the position of the notch. .