JP2561128Y2 - Lid opening and closing structure for small electronic devices - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a lid opening and closing structure for a small electronic device such as a calculator.

[0002]

2. Description of the Related Art Conventionally, as a small electronic device, there has been known an electronic calculator which covers a main body case with a lid case so as to be freely opened and closed. This calculator has a lid case made of hard synthetic resin to securely protect the display and key input part of the main case, and this lid case can rotate or slide with respect to the main case. Attached to. That is, the rotary calculator has a structure in which a lid case is attached to a main body case by a hinge. Further, the slide type calculator has a structure in which slide protrusions of the lid case are slidably disposed in guide grooves formed on both side surfaces of the main body case.

[0003]

[Problem to be Solved by the Invention] Among such calculators, in the case of a rotary calculator, it is difficult to use the cover case by swinging the cover case up and down simply by rotating the cover case when using it. Although the lid case is used by being rotated by approximately 360 ° and arranged on the lower surface of the main body case, when the lid case is rotated by 360 °, the inside of the lid case is exposed, which is not only unfavorable in appearance, but also Since the frame of the lid case is protruding, there is a problem in that the feel when holding it by hand is bad. Also, with a sliding calculator, simply sliding the lid case to expose the display and key operation section takes up extra space and is inconvenient to use, so remove the lid case once and flip it over. In addition, the lid case is attached again and arranged on the lower surface of the main case, but since the lid case must be removed once, turned over,
There is a problem that the attaching and detaching work is complicated and troublesome. This invention has been made in view of the above circumstances, and its purpose is to not only hide the inner surface of the lid case at the time of use, but also to easily open and close the lid case, and to provide easy-to-use small electronic equipment. An object of the present invention is to provide a lid opening / closing structure.

[0004]

In order to achieve the above object, the present invention provides a main body case in which guide grooves are formed on both side walls over substantially the entire length thereof, and a protective cover for covering the upper surface of the main body case. A lid case provided with a slide protrusion that slides in the guide groove at both ends on one side, and a rotatably provided on both side walls of the main body case at one end of the guide groove, and guides in accordance with the rotation operation. A rotating body provided with an engagement groove into which the slide protrusion is removably inserted in correspondence with the groove.

[0005]

The operation of the present invention is as follows. When the lid case is closed with respect to the main body case, the slide projection of the lid case is engaged with the engagement groove of the rotating body provided in the main body case. For this reason, at the time of use, the lid case can be rotated about the rotating body with respect to the main body case and opened. Moreover, the lid case is 180 ° with respect to the main case.
When opened, the engaging groove of the rotating body rotates with this and corresponds to the guide groove of the main body case in a continuous state, so that the slide protrusion of the lid case can slide along the guide groove of the main body case, The lid case can be slid and arranged on the lower surface of the main body case.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a hard case type calculator. This calculator includes a main body case 1 and a lid case 2. A liquid crystal display unit 3 and a key input unit 4 are provided on an upper surface of the main body case 1, and guide grooves are formed on substantially both sides of the main body case 1 (only the front surface is shown in FIG. 1). 5 are provided in a straight line. The lid case 2 is for opening and closing the upper surface of the main body case 1 to protect the liquid crystal display unit 3 and the key input unit 4, and is made of a hard synthetic resin. At both rear end portions (right end portion in FIG. 1) of the lid case 2, a substantially arc-shaped support portion 6 is vertically provided so as to correspond to the outer surface of the main body case 1. As shown in FIG. 2, an elongated slide protrusion 7 that slides in the guide groove 5 of the main body case 1 is formed on the inner surface of the support portion 6.

On the other hand, as shown in FIG. 3, a substantially circular concave portion 8 is provided at both rear end portions (right end portion in FIG. 1) of the main body case 1. 10 are arranged. As shown in FIGS. 3 and 4, the rotator 10 includes a main body 11 disposed in the recess 8 of the main body case 1.
A shaft portion 12 is provided on the inner side surface of the
Bearing hole 13 provided in the side wall of main body case 1 in the inside
The rotation restricting portion 14 is provided on the inner surface of the shaft portion 12, and the rotation restricting portion 14 is disposed in the main body case 1. The bearing hole 13 is rotatably attached to the main body case 1 with the edge of the bearing hole 13 interposed therebetween.

The main body 11 of the rotating body 10 is formed in a substantially cylindrical shape. An engagement groove 15 is formed on the outer end surface (left end surface in FIG. 3) of the main body 11 so that the slide protrusion 7 is removably inserted in correspondence with the guide groove 5. Engagement groove 1
5 has the same width and the same depth as the guide groove 5, passes through the center of the main body 11, is formed longer than the slide projection 7, and has a stopper 16 at one end. The stopper portion 16 is for restricting the slide protrusion 7 from coming out of the engagement groove 15 in only one direction without coming out of both right and left.

The rotation restricting portion 14 is formed in a substantially cylindrical shape.
By forming a plurality of (four in FIG. 4C) slits 17 in the predetermined position in the axial direction, these slits 1 are formed.
7 are formed on elastic portions 18 that can be elastically deformed in the circumferential direction.
9 is formed. The engaging projection 19 regulates the rotation position of the rotating body 10 by elastically engaging with a locking recess 20 provided on the inner surface of the main body case 1. Note that the locking recess 20 is in a state where the lid case 2 is closed, a state where the lid case 2 is opened by 90 °,
Are provided at positions where the engagement protrusions 19 of the rotation restricting portion 14 are engaged when three are opened by 180 degrees.

Next, a case where such a calculator is used will be described. As shown in FIG. 1, when the lid case 2 is closed on the main body case 1, the slide projection 7 of the lid case 2 is disposed in the engagement groove 15 of the rotating body 10, and The mating projection 19 is locked in the locking recess 20 in the main body case 1 and the rotation of the rotating body 10 is elastically restricted. Further, the engaging groove 15 of the rotating body 10 corresponds to the guide groove 5 of the main body case 1, but at this time, the stopper 16 of the engaging groove 15 is located on the left side, and the guide groove 5
And the engagement groove 15 are interrupted so as not to be continuous. For this reason, the slide projection 7 of the lid case 2 does not move from the inside of the engagement groove 15 of the rotating body 10 to the inside of the guide groove 5, and is rotatable together with the rotating body 10.

When the lid case 2 is opened against the elasticity of the elastic portion 18 of the rotation restricting portion 14 in this state, the locking of the engaging projection 19 by the locking concave portion 20 is released, and the rotating body together with the lid case 2 is rotated. 10 rotates. And the lid case 2 is the main body case 1
, The engaging projection 19 of the rotation restricting portion 14 engages with the other locking concave portion 20 again, thereby restricting the rotation of the rotating body 10. In this state, as shown in FIG. 5A, the lid case 2 stands up with respect to the main body case 1, and the liquid crystal display unit 3 and the key input unit 4 of the main body case 1 are exposed, so that input operation is possible. Becomes

If the lid case 2 is in the way in this state, the lid case 2 is further opened against the elasticity of the elastic portion 18, and as shown in FIG. 180 ° open to Then, the rotating body 10 is also 180
Due to the rotation, the engaging groove 15 is turned right and left, whereby the stopper portion 16 is located on the right side, the engaging groove 15 corresponds to the guide groove 5 of the main body case 1 in a continuous state, and the sliding of the lid case 2 is performed. The projection 7 can be moved from the engagement groove 15 into the guide groove 5. Also at this time, the engagement convex portion 19 of the rotation restricting portion 14 is engaged with the locking concave portion 20, and the rotation of the rotating body 10 is restricted. Then, when the lid case 2 is moved to the lower side of the main body case 1 in this state, the slide protrusion 7 of the lid case 2 is moved.
Moves in the guide groove 5 of the main body case 1, and the lid case 2 is arranged on the lower surface side of the main body case 1 as shown in FIG. As a result, the inner surface of the lid case 2 is hidden by the main body case 1, and the outer surface of the lid case 2 is exposed.

When the lid case 2 is closed, the lid case 2 can be closed on the main body case 1 by performing the above operation in reverse.

As described above, according to this calculator, the lid case 2 is opened by rotating the lid case 2 by 180 ° with respect to the main body case 1, and the lid case 2 is slid to the lower surface side of the main body case 1. Since the case 2 can be arranged under the main body case 1, the opening and closing operation of the lid case 2 can be easily and easily performed, and the inner surface of the lid case 2 can be hidden by the main body case 1, so that the appearance during use can be improved. In addition, the outer surface of the lid case 2 is exposed, so that the touch when using it by hand is good. In particular, the rotating body 10 is in a state where the lid case 2 is closed, a state where the lid case 2 is opened by 90 ° and stands up, and a case where the lid case 2 is opened by 180 ° and the guide groove 5 and the engagement groove 1 are opened.
The engagement protrusion 19 of the rotation restricting portion 14 is elastically engaged with the locking recess 20 so as to hold the lid case 2 in three states in which the rotation body 10 is correspondingly continuous. Since the movement is regulated, the lid case 2 can be used in two ways, that is, a state in which the cover case 2 is erected, and a state in which the cover case 2 is arranged under the main body case 1, and in a state in which the cover case 2 is closed. Since the lid case 2 does not open, portability is good,
Extremely easy to use.

The present invention can be applied not only to the above-described calculator but also to a small electronic device such as an electronic organizer.

[0093]

As described above, according to the present invention, the slide projection of the lid case engages with the engagement groove of the rotating body in a state where the lid case is closed with respect to the main body case, and rotates during use. By rotating the lid case around the body and opening it with respect to the body case, and making the engaging groove of the rotating body correspond to the guide groove of the body case in a continuous state, the slide projection of the cover case guides the body case. The inside of the groove can be slid, and the lid case can be slid and arranged on the lower surface of the main body case. For this reason, the opening and closing work of the lid case can be performed easily and easily, the usability is extremely good, and since the inner surface of the lid case can be hidden when used, the appearance is also preferable, and since the outer surface of the lid case is exposed, The feel when used in hand is also good.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of the present invention, in which a part of a lid case is sectioned in a state where a lid case is closed.

FIG. 2 is a side view of a cross section of a lid case.

FIG. 3 is an enlarged sectional view of a main part of the embodiment.

4A and 4B show a rotating body, FIG. 4A is a left side view, FIG. 4B is a sectional view taken along line AA of FIG. 4A, and FIG.

5A and 5B show a use state of the embodiment, in which FIG. 5A is a side view in which the lid case is opened by 90 °, and FIG.
° Side view of opened state, (C) is a side view of a state where the lid case is slid under the main body case.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 2 Lid case 5 Guide groove 7 Slide protrusion 10 Rotating body 14 Rotation regulation part 15 Engagement groove 20 Locking recess

Claims (2)

(57) [Scope of request for utility model registration] 1. A main body case having guide grooves formed on both side walls over substantially the entire length thereof, and a slide projection which covers and protects an upper surface of the main body case and slides in the guide grooves at both ends on one side. A lid case, provided at one end of the guide groove so as to be rotatable on both side walls of the main body case, and the slide protrusions corresponding to the guide groove in a continuous state in response to a rotation operation. A rotating body provided with an engaging groove for removably inserting; a lid opening / closing structure for a small electronic device, comprising: 2. The apparatus according to claim 1, wherein the rotation position of the rotator is substantially 90 ° with respect to the main body case in a state where the lid case is closed with respect to the main body case.
It is characterized in that it is provided with a rotation restricting means for restricting at an open and upright state, and at three positions where the lid case is opened by 180 ° and the engagement groove of the rotating body corresponds to the guide groove. Lid opening and closing structure for small electronic devices.