JPH0334940Y2 - - Google Patents

Description

[Detailed explanation of the idea] (b) Industrial application fields The present invention relates to an operating unit opening/closing device for electronic equipment.

(b) Prior Art A basic example of an opening/closing device for an operating section of an electronic device is the one shown in Japanese Utility Model Publication No. 11450/1983.

FIGS. 16 and 17 are diagrams showing the conventional example. In the conventional example, by pressing the push button 32, the latch 33, which seems to be biased by a spring against the machine casing 37, is released, and the hinge 34 and the spring 35 attached to the hinge 34 are used to operate the latch 33 up to the stop plate 36. When the switch lid 38 is rotated and opened, and a push force is applied to the switch lid 38, the operating portion rotates in the opposite direction and the latch 3 is opened.
3 engages with the stop plate 36 to accommodate the operating section.

However, in the conventional example, since the spring is constituted as one component, the number of parts is increased, and the number of assembly steps is also increased.

(c) Purpose of the invention This invention was created in view of the above points,
The object of the present invention is to provide an operating section opening/closing device that can reduce the number of parts and provide mechanically stable operation.

(d) Structure of the invention The invention consists of a flange that comes into contact with a push button device, a lever that rotates due to the pushing force applied to the flange, and a rotation bearing into which the rotation shaft of the lever is fitted. , a lever member is integrally formed with a spring portion connected to the rotation bearing portion, a spring position restriction portion that restricts the position of the spring portion, and a locking pawl that slides the end surface of the mounting portion when the lever is rotated. This opening/closing device is placed in a chassis and uses rotational movement of the lever to open and close an operating section main body.

(e) Examples An embodiment of the present invention will be described below with reference to the drawings.

1 is the operation unit main body, and FIGS. 3, 4, and 5
As shown in the figure, there are operation buttons 2 and lock member 3 on the front.
and two first openings 4a and 4b are provided, and a marking plate 5 for mode display is attached around the operation button 2 by adhesive or the like.
Further, a second opening 6 is provided on the top surface, and a side surface A
has a through hole 7a and a cylindrical boss 8, and a rubber 9 is inserted into the boss 8 as shown in FIG. Side B has a through hole 7b like side A, and is further provided with a protrusion 10.

The through holes 7a, 7 on both sides of the operating section main body 1
b into the hook bosses 13a and 13b attached to the two guide angle portions 12a and 12b of the chassis 11, respectively, as shown in FIG. It is locked.

On the other hand, the lid body 14 is decorated with markings 15 on its surface, as shown in FIG.
and two first engaging pieces 17a, 17b, and four second engaging pieces 18a, 18b, 18c, 18d and 2.
There are two cylindrical projections 19a, 19b, and the cylindrical projections 19a, 19b have torsion coil springs 20a,
20b is wound around.

In addition, the front panel 21 has two support shafts 2.
2a, 22b and an auxiliary plate 24 provided with two elongated holes 23a, 23b, and a rib 25 having an arc shape as shown in FIG. 2 engaging pieces 18
a, 18b, 18c, 18d and the support shaft portion 22
a, 22b, and one tip of each of the torsion coil springs 20a, 20b is inserted into the elongated hole 2.
3a and 23b and fix it. Thereby, the torsion coil springs 20a, 20b have the function of biasing the lid 14 in the direction of opening. In the manner described above, the lid 14 is attached to the front panel 21.

Next, the front panel 21 with the lid 14 attached thereto is fixed to the chassis 11 to which the operation section main body 1 is temporarily locked, and the lid 14 is rotated around the support shafts 22a and 22b. the first
By engaging the locking claw 16 with the second opening 6 of the operating section main body 1, the lid body 14 and the operating section main body 1 are integrally coupled.

A bracket portion 28 in which a fixed shaft 26 and a rotating support shaft 27 are integrally molded is attached to the chassis 11, and a lever member 29 assembled to the fixed shaft 26 and the rotating support shaft 27 has a , a lever 29a, a rotation bearing portion 29b corresponding to the rotation support shaft 27, and a spring position regulating portion 29c corresponding to the fixed shaft 26, as shown in FIG. The lever member 29 is integrally molded, and has a locking effect when assembling the lever member 29.
When the lever 29a is rotated, the lever member 29
a second locking pawl 29e that also serves to prevent the floating part, and a hook portion 29f that locks the operating section main body 1.
and a collar portion 29 that comes into contact with the push button device 30 assembled to the front panel 21 by fusion or the like.
g. Therefore, when the lever member 29 is assembled to the bracket portion 28, the lever member 29 is attached to the rotation support shaft 27 and the fixed shaft 2.
Fixed by 6.

FIG. 10 is a cross-sectional view of the main parts of the lever member 29 and the vicinity of the side surface B of the operating section main body 1 when the operating section main body 1 is housed in the front panel 21, and FIG. Part body 1
FIG. 10 is a cross-sectional view of the main part in the same vicinity as FIG. 10 in an open state. Further, FIG. 1 is a sectional view of the main parts inside the front panel as seen from the top with the operation section main body 1 in an open state. The opening/closing mechanism of the operating section will be described below with reference to these drawings.

When opening the operation section main body 1, the push button device 30 is activated to press the collar portion 29g of the lever member 29 from the X direction shown in FIG. axis 27
The spring portion 29b rotates in the Y direction around
is deflected, and the rotation bearing portion 29b and the spring position regulating portion 29c rotate together, so that the hook portion 29f also rotates, and as a result, the protrusion on the side surface B of the operation section main body 1 10 and front hook part 2
9f is released, the operation section main body 1 rotates around the hook bosses 13a and 13b of the guide angle sections 12a and 12b, and rotates around the lid body 14.
The support shafts 22a and 22b are used as rotation axes to rotate and open as a unit.

During this rotation, the rubber 9 attached to the side surface A of the operating section main body 1 comes into contact with the rib 25 integrally formed on the back side of the front panel 21, as shown in FIG. As shown in FIG. 9, the center of the arc of the rib 25 is located at a point N that is shifted upward from a point M that is the center of the hook bosses 13a, 13b, which are the rotational axes of the operation section main body 1.
That is, the operation section main body 1 is connected to the hook boss 1.
3a, 13b, the contact area of the rubber 9 with the rib 25 centering on point N gradually increases, and the rotation speed is controlled. As the rubber 9, BR rubber or CR rubber, which has excellent wear resistance, is used. These mechanisms are disclosed in FIGS. 12 and 13.

Now, when the rotational movement is completed and the operating section main body 1 is completely opened, the operating section main body 1
The locking tongue piece 3a of the locking member 3 attached to the front panel 21 comes into contact with the tip of the third engagement piece 31 integrally molded inside the front panel 21,
Eventually, they will engage and become locked. This mechanism is disclosed in FIGS. 14 and 15.

Next, a mechanism for storing the opened operation section main body 1 in the front panel 21 will be explained. First, the unlocking lever 3a of the locking member 3, which has a hinge structure on the main body 1 of the operating section and a part of the upper part.
is pressed from the Z direction as shown in FIG.
2a, 22b as centers and rotated with a force stronger than the elastic force of the biased torsion coil springs 20a, 20b, the operation section main body 1 integrated with the lid body 14 also rotates against the hook boss. 13a, 13
b is rotated at the same time as the rotation axis, and comes into contact with the protrusion 10 attached to the side surface B and the hook portion 29f of the lever member 29. The hook portion 29
The tip of f is inclined as shown in FIG.
The lever 29a rotates by sliding on the inclined surface 9f, and as the protrusion 10 climbs over the hook portion 29f, the lever 29a is rotationally locked by the spring portion 29d of the lever member 29. , the operation section main body 1 is connected to the front panel 21
stored inside.

(f) Effects of the invention As mentioned above, according to the invention, by integrally molding the spring part with the lever, it is possible to reduce the number of parts and assembly man-hours, which contributes to cost reduction.
The lever member can be easily attached to the chassis, and mechanically stable operation can be achieved.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of the main parts of the front panel as seen from the top when the operating section is open, Fig. 2 is a perspective view of the lever member, Fig. 3 is a front view of the operating section main body, and Fig. 4 5 is a perspective view of the side A side of the operation unit main body, FIG. 5 is a perspective view of the side B side of the operation unit main body, FIG. 6 is a perspective view of the lid before attachment to the front panel, and FIG.
The figure is a perspective view of the back side of the part where the lid of the front panel is attached, Figure 8 is a perspective view of the operation unit body showing the relationship between the operation unit body and the hooking boss of the rubber and guide angle part, and Figure 9 10 is a side view showing the relationship between the ribs of the front panel and the rubber of the operating unit main body.
Figures 12 and 14 show the vicinity of the lever, the vicinity of the ribs, and the vicinity of the lock member when the operation part is stored, that is, the C-D line and the E-
F line, G-H line main part sectional view, Fig. 11, Fig. 13
Figure 15 shows C-D when the operating section is open.
line, E-F line, G-H line main part sectional view, Fig. 16,
FIG. 17 is a perspective view of a conventional example. Explanation of main drawing numbers, 1... Operating unit main body, 3... Lock member, 11... Chassis, 14... Lid body, 2
1...front panel, 25...rib, 29...
Lever member, 30...push button device.

Claims (1)

[Scope of utility model registration request] A lever that rotates by the pressing force of a push button device, a spring portion that has one end connected to the lever, a spring position restriction portion that restricts the position of the other end of the spring portion, and a lever that is rotatably supported by a chassis and opened. An operation characterized in that, when storing the operating section that is biased in the direction, a lever member integrally formed with a locking pawl that engages with a protrusion formed on the side surface of the operating section is supported on the bracket of the chassis. Part opening/closing device.