JPH035031Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a control opening/closing device for electronic equipment such as a video tape recorder (VTR).

(B) Prior art The operation unit for performing program operations such as setting reservation time in a VTR is integrally attached to the inner surface of the opening/closing lid, and at the same time is biased in the opening direction by a spring or the like, and is integrated with the opening/closing lid when the lid is opened. An operation opening/closing device that rotates and appears on the outside to facilitate display and operation of operation buttons is often used. An example of this operating section opening/closing device is disclosed in Japanese Utility Model Application No. 196413/1983. That is, as shown in FIG. 7, in the prior art, a protrusion 2 is provided on the side surface of the operating part 1, and the protrusion 2 is engaged with a lever member that is linked to a push button 3 for opening and closing the operating part when the lid is closed. When the lid is opened, the locking member 4 provided on the main body of the operating portion 1 is activated.
to lock the operating section 1, and fix the operating section 1 in the open state, and press the operating button 5 provided on the operating section 1.
It is designed so that operations such as pressing can be performed reliably. However, according to the prior art, as mentioned above, two separate locking devices are required for opening and closing the lid, which increases the number of parts and requires space for the locking device. It also causes erroneous operation for the user. Further, since the locking member 4 is disposed on the top surface of the operating section 1, the operating section 1 rotates in the closing direction after the locking member 4 is unlocked, and the front panel 6 closes with the opening 6a. There was a risk that a finger might be caught between it and the operating section 1.

(c) Purpose of the invention This invention was created in view of the above points,
The object of the present invention is to propose an operation part opening/closing device that locks the operation part when opening and closing the lid using one locking device.

(d) Structure of the invention The invention has a lever member that is guided from the engagement position to the disengagement position by pushing the push button against the bias, and a first protrusion and a second protrusion that are integrally formed on the side. and an operating part that rotates to rotate the lever member, and the lever member is engaged with the first protrusion to lock the operating part in the closed lid position, and the lever member is engaged with the second protrusion to lock the operating part in the open lid position. This is a special feature of the operating unit opening/closing device.

(e) Embodiment An embodiment of the present invention will be described below with reference to the drawings. Fig. 1 is a partially cutaway perspective view of the main part of an embodiment of the present invention when the lid is opened, Fig. 2 is a partially cutaway perspective view of the main part when the lid is closed, and Fig. 3 is the operating unit main body. FIG. 4 is a perspective view of the lever member, FIG. 5 is a sectional view of the main part when the lid is opened, and FIG. 6 is a diagram illustrating the state of engagement between the lever member and the second protrusion.

Reference numeral 1 designates the main body of the operation unit, and the top surface is provided with operation buttons 5 and square holes 5a for program operations such as reservation timer settings, and through holes 5b and 5 are provided on both sides.
b, and furthermore, a first protrusion 7 and a second protrusion 8 are integrally molded on the side A side. In addition, the first and second
As shown in FIGS. 1 and 3, the protrusions 7 and 8 have substantially fan-shaped cross sections and are partially missing at their tips. The projecting pieces 9a of the rotatable opening/closing lid 9 attached to the opening 6a of the front panel 6 and biased in the opening direction by a spring or the like are inserted into the square holes 5a, and then the through holes 5b are inserted. , 5b, a hook boss 1 is formed coaxially with the center of rotation of the opening/closing lid 9 at the tip of the guide angle portions 10a, 10a provided in the chassis 10.
By inserting 0b and 10b, the operation section 1
The hook boss 10b is integrated with the opening/closing lid 9,
It becomes possible to rotate around 10b and is biased in the opening direction. A fixed shaft 1 is provided in the chassis 10.
A bracket part 11 is provided in which a pivot shaft 1a and a pivot shaft 11b are integrally molded, and a lever member 12 is placed on the bracket part 11. The lever member 12 is provided with a lever 12b having a tapered side surface 12a, an elastic tongue piece 12c, and a first circular hole 12 into which the fixed shaft 11a is inserted.
A spring position regulating portion 12d having a diameter e and a rotation bearing portion 12g having a second circular hole 12f into which the rotation support shaft 11b is fitted are integrally molded from synthetic resin via a meandering spring portion 12h. In addition, a locking pawl 12i has the purpose of locking the lever member 12 when it is placed on the bracket portion 11 and preventing the lever member 12 from lifting up when the lever is rotated, and the locking pawl 12i has the purpose of preventing the lever member 12 from floating when the lever is rotated. The third projection 3a on the back surface of the push button 3 mounted in the push button through hole 6b of the front panel 6 comes into contact with a pressing portion 12k. The fixed shaft 11a is inserted into the first circular hole 12e.
Further, the rotation support shaft 11b is fitted into the second circular hole 12f, the locking pawl 12i is locked to the lower surface of the bracket portion 11, and the tip of the elastic tongue piece 12c is inserted into the second circular hole 12f. Notch 1 in chassis 10
It is fixed on the bracket part 11 by making it come into contact with the wall surface of 0c.

Next, the opening/closing mechanism of the operating section 1 will be explained. When the opening/closing lid 9 is closed, the hook portion 1
2j and the first protrusion 7 are engaged to become in a locked state, and the main body of the operating section 1 is connected to the front panel 6.
It is stored inside. When the push button 3 is pressed, the pressing part 12k is pressed from the direction C in FIG. the hook portion 12J and the first protrusion 7.
The engagement with is released. As a result, the operation section 1
The opening/closing lid 9 rotates together around the hook bosses 10b, 10b, and reaches the opening state.
Note that while the pressing force is applied to the pressing portion 12k,
The lever 12b rotates in the direction D around the pivot shaft 11b, and the spring portion 12h and the elastic tongue 12c are elastically deformed and biased in the return direction.
As soon as the pushing force is removed, the lever 12
b returns to its original position. Immediately before the operation section 1 is completely opened, the second protrusion 8 and the hook section 12 are opened.
j comes into contact, but the tip of the second protrusion 8 has a substantially fan-shaped cross section and a chipped tip on the abutting side, and a strong biasing force is acting on the opening/closing lid 9. , as shown in FIG.
is the tapered side surface portion 12a of the lever member 12.
When the lever 12b reaches the position indicated by the dashed line, the side surface 12a is pressed in the E direction in FIG. etc. operations become easier.
To change the lid from the open state to the closed state, press the push button 13.
is pressed, the lever 12b is rotated to release the engagement between the second protrusion 8 and the side surface portion 12a, and at the same time, the opening/closing lid 9 is rotated with a finger in the direction F in FIG. At this time, just before the lid is completely opened, the first protrusion 7 comes into contact with the side surface 12a and is prevented from rotating in the closing direction; however, the first protrusion 7
Since the cross section is approximately fan-shaped and the tip on the abutting side is chipped, the opening/closing lid 9 is rotated in the closing direction with a stronger force, and the tip of the first protrusion 7 is moved to the side surface 1.
2a and finally engages with the hook portion 12j to bring the lid into the closed state.

(F) Effects of the invention As described above, according to the invention, the operating section is locked when the lid is opened and closed by one locking device, so it is possible to reduce the number of parts and save space. It also helps prevent incorrect operations. In addition, since there is no locking member disposed on the top surface of the operating unit as in conventional models, there is no need to touch the top surface of the operating unit when changing from the open state to the closed state. There is no risk of getting your fingers caught in between.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of the main part of an embodiment of the present invention when the lid is opened, Fig. 2 is a partially cutaway perspective view of the main part when the lid is closed, and Fig. 3 is the operating unit main body. A perspective view of
FIG. 4 is a perspective view of the lever member, FIG. 5 is a sectional view of the main part when the lid is opened, FIG. 6 is a diagram illustrating the state of engagement between the lever member and the second protrusion, and FIG. 7 is a diagram of the conventional example. FIG. Explanation of main figure numbers, 1...Operation unit, 3...Push button,
7...First protrusion, 8...Second protrusion, 12...Lever member.

Claims (1)

[Scope of utility model registration request] It consists of a lever member that is guided from the engagement position to the disengagement position against the bias when the push button is pressed, and an operating part that has a first protrusion and a second protrusion integrally molded on the side surface and rotates to two positions. , the lever member is moved to the first
An operating section opening/closing device characterized in that the operating section is engaged with a protrusion to lock the operating section in a closed position, and the operating section is engaged with a second protrusion to be locked in an open position.