JPH10119660A - Opening/closing structure of display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To open a display in large to an about horizontal condition, by bending rearward the upper part of the guide groove of a chassis main body, and moving rearward the upper end part of the display when the upper end part of the display is moved in a vertical direction. SOLUTION: A display 13 is arranged in an about vertical condition in the front surface opening of a shassis main body 11, and the lower fulcrum 41 of the lower end part of the display 13 is supported so as to move in a fore and rear direction by a sliding member 17 provided on the chassis main body 11. The upper fulcrum 43 of the upper end part of the display 13 is supported so as to move in a vertical direction by a guide groove 12b provided on the chassis main body 11. At that time, the upper part 12d of the guide groove 12b of the chassis main body 11 is bent rearward to move the upper end part of the display 13 in the rear direction when the upper end part of the display 13 moves in a vertical direction; thereby facilitating the easy replacement of a cassette tape, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a display opening / closing structure in audio equipment and the like.

[0002]

2. Description of the Related Art Generally, in an audio device, a navigation device, or a navigation device which also serves as an audio device, as shown in FIG. A display 5 provided with switches 3 and a display screen 4 is arranged.

As shown in FIG. 7A, the lower support 5a of the lower end is supported by a sliding member 6 provided on the chassis body 1 so as to move in the front-rear direction. The upper fulcrum 5b is supported by a guide groove 7 provided in the front frame 2 so as to move in the vertical direction.
As shown in (2), the front opening 2a of the front frame 2 can be opened by moving the upper end of the display 5 downward while moving the lower end of the display 5 forward.

FIG. 7B shows a tilted state in which the display 5 is slightly inclined backward in order to improve the visibility of the display 5.

When the display 5 is widely opened, a cassette tape, CD, MD, or the like set in the space S in the chassis main body 1 can be easily replaced.

[0006]

However, in the above-described conventional opening / closing structure, the upper and middle portions of the guide groove 7 provided in the front frame 2 are vertically straight, and only the lower portion is curved forward. 7 (C), when the front opening 2a is greatly opened, the display 5 protrudes greatly forward from the front frame 2, so that the lower fulcrum 5a of the lower end of the display 5 is moved. The sliding stroke of the sliding member 6 moved in the front-rear direction becomes very long.

For this reason, when the amount of projection of the display 5 is limited, the display 5 is shown in FIG.
Because it can only be opened diagonally as shown by,
There is a problem that replacement of a cassette tape or the like becomes difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a display which can open a display largely to a substantially horizontal state even when a sliding stroke of a sliding member is short, and can smoothly open and close the display. It is an object of the present invention to provide an opening and closing structure.

[0009]

In order to solve the above-mentioned problems, according to the present invention, a display is arranged in a substantially vertical state at a front opening of a box-shaped chassis main body. The upper fulcrum of the upper end of the display is supported so as to move vertically by a guide groove provided in the chassis body, and the lower end of the display is supported by a sliding member provided at the lower end of the display. In the opening / closing structure in which the upper end portion moves downward while the portion moves forward to open the front opening of the chassis main body, the upper portion of the guide groove of the chassis main body is curved backward, and the upper end portion of the display is closed. An object of the present invention is to provide a display opening / closing structure wherein the upper end of the display is moved rearward when the display is moved up and down.

According to the present invention, since the upper portion (including the intermediate portion) of the guide groove is curved backward, the upper end portion is moved rearward when the upper end portion of the display is moved particularly in the downward direction. The display can be largely retracted into the chassis body, and the display can be largely opened in a substantially horizontal state even if the sliding stroke of the sliding member is short.

Further, as in the second aspect, the lower part of the guide groove of the chassis body may be configured to be curved forward continuously to the upper part.

[0012] With this configuration, the upper fulcrum of the upper end of the display is smoothly guided over the entire length of the guide groove by continuously bending the lower part of the display groove and the upper part of the display groove. The opening and closing movement of the display becomes smooth.

Further, the angle formed by the center line of the guide groove and the straight line connecting the lower fulcrum of the lower end of the display and the upper fulcrum of the upper end thereof is substantially constant over the entire length of the guide groove. It can be set so that

With this configuration, the upper fulcrum of the upper end of the display is guided by an average moving force (torque) over the entire length of the guide groove, and the opening and closing movement of the display becomes smoother.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings.

As shown in FIG. 4A, a display 13 is disposed substantially vertically in a front opening 12a of a front frame 12 of a box-shaped chassis body 11.

As shown in FIG. 1, the chassis body 1
An inverted L-shaped first sliding member 14 </ b> R extending in the front-rear direction is disposed at a bottom right portion inside the first sliding member 14.
Before and after R, elongated holes 14a, 14a extending in the front-rear direction are provided.
Are formed.

Pins 15, 15 are fixed to the right side 11 a of the chassis body 11, and rollers 16, 16 rotatably fitted to the pins 15, 15 are first sliding members 14.
The first sliding member 14R can be slid in the front-rear direction by a predetermined stroke L1 with respect to the chassis main body 11 by fitting into the respective long holes 14a, 14a of R.

A rack 14b is formed at a position substantially higher than a rack 17b of a second sliding member 17R, which will be described later, at a substantially middle position of the upper edge of the first sliding member 14R.

An inverted L-shaped second sliding member 17R extending in the front-rear direction is disposed inside the first sliding member 14R.
Elongated holes 17a, 17a extending in the front-rear direction are formed before and after the second sliding member 17R.

A pin 1 is provided inside the first sliding member 14R.
8 and 18 are fixed, and the rollers 19 and 19 rotatably fitted to the pins 18 and 18 are fitted into the elongated holes 17a and 17a of the second sliding member 17R, respectively.
The second sliding member 17R can slide in the front-rear direction with a predetermined stroke L2 with respect to the first sliding member 14R.

A rack 17b is formed at the upper edge of the second sliding member 17R from the front end to almost the center.

A pin 20 is fixed to the right side 11a of the chassis body 11, and the pin 20 is
1 and the large gear 22 are integrally fixed so as to be rotatable, and the small gear 21 meshes with the rack 14b of the first sliding member 14R, and the large gear 22 is connected to the second sliding member. Engage with 17R rack 17b.

Thus, when the second sliding member 17R is slid in the front-rear direction by the predetermined stroke L2, the rack 17
b, the large gear 21, the small gear 2, and the first sliding member 14R in the same direction via the rack 14b.
The sliding is performed at a predetermined stroke L1 corresponding to the gear ratio of 2.

In this embodiment, the sliding strokes L1 and L2 are set to be substantially the same, and the sliding stroke (L1 + L2) required for the entire sliding members 14R and 17R is shared by the sliding members 14R and 17R in half. The sliding strokes L1, L2 of the individual sliding members 14R, 17R are set to be short (halved).

As shown in FIG.
The first sliding member 1 on the bottom right portion described above
The first sliding member 14L and the second sliding member 17L, which are symmetrical to the 4R and the second sliding member 17R, are arranged, and are arranged in a predetermined manner in the same manner as the first sliding member 14R and the second sliding member 17R. Sliding is possible with strokes L1 and L2.

Above the front ends of the racks 17b, 17b of the left and right second sliding members 17L, 17R, an interlocking shaft 26 extending in the left and right direction is disposed, and the left end of the interlocking shaft 26 is a chassis. Left side 11b of main body 11
The right end is rotatably supported by a bracket 27 fixed to the right side 11a of the chassis body 11, and the interlocking shaft 26 has the left and right second sliding members 17L and 17R. Each rack 17b, 17b
Are fixed to each other.

As a result, when the respective drive gears 28, 28 are simultaneously rotated by the interlocking shaft 26, the left and right second sliding members 17L, 17R are simultaneously slid forward and backward.

A motor 29 is fixed to the bracket 27 in an upward direction, and an output worm 30 of the motor 29 is fixed.
Meshes with a worm wheel 32 rotatably supported by a support shaft 31 fixed to the bracket 27, while a small gear 33 fixed to the worm wheel 32 via a slip mechanism 37 is connected to the support shaft 3 fixed to the bracket 27.
The small gear 36 fixed to the large gear 35 while being engaged with the large gear 35 rotatably supported by 4
It is designed to mesh with the right drive gear 28,
Worm 30, worm wheel 32 and large and small gears 3
3, 35 and 36 constitute a speed reduction mechanism of the motor 29.

Thus, the left and right second sliding members 17L and 17R are electrically driven to slide back and forth by forward and reverse rotation of the motor 29.

A slip mechanism 37 is provided between the worm wheel 32 and the small gear 33 to prevent transmission of a predetermined torque or more, so that breakage and biting of the speed reduction mechanism can be prevented. I have to.

The second sliding member 17R is provided with a stroke detecting projection 17c. When the closing detecting switch 38A detects that the second sliding member 17R has performed the last sliding stroke, the motor 29 is moved backward. Motion rotation (for example, reverse rotation)
To stop automatically.

When the opening detecting switch 38B detects that the second sliding member 17R has performed the foremost sliding stroke, the front sliding rotation (for example, forward rotation) of the motor 29 is automatically stopped.

As shown in FIG. 3A, the second sliding member 1
7R has a reflecting plate 3 printed with light and dark stripes in the front-rear direction.
9 is attached, and a photosensor 40 disposed above the reflection plate 39 generates a pulse based on the brightness of the reflected light, and the pulse is counted by a counter, whereby the second sliding member 17R slides at that time. The stroke can be accurately detected.

Rising brackets 17d, 17d are fixed to the front ends of the left and right second sliding members 17L, 17R, respectively. Holes 13a, 13a
The lower fulcrum shafts 41, 41 which are rotatably fitted into the shaft are fixed.

Thus, the second sliding members 17L, 17R
Slides back and forth, the lower end shafts 41 and 41 move the lower end of the display 13 back and forth.

Pins 42, 42 are fixed to upper ends on both sides of the display 13, respectively.
The upper fulcrum rollers 43, which are rotatably fitted to the front frame 2, are respectively fitted to vertically extending guide grooves 12b, 12b formed on both sides of the front opening 12a of the front frame 12.

Thus, the second sliding members 17L, 17R
When the lower end of the display 13 is moved back and forth, the upper end of the display 13 is moved up and down by the rollers 43 and 43 guided vertically by the guide grooves 12b and 12b.

Each of the guide grooves 12b, 12b is shown in FIG.
As shown in detail in (B), the upper end portion 12c is straight, but the upper portion (including the intermediate portion) 12d below this portion 12c is curved backward and the lower portion 1c is bent.
2e is curved forward.

More specifically, the upper portion 12d of each of the guide grooves 12b, 12b includes a straight line b (1) connecting the lower fulcrum shaft 41 and the upper fulcrum roller 43 of the display 13, and an upper portion 12d.
Is set to be larger than the angle β1 formed with the center line d when the guide groove is linear.

The lower portion 12e of each of the guide grooves 12b, 12b is formed so that the angle α2 between the straight line b (2) and the center line e of the lower portion 12e is equal to the center line f when the guide groove is linear. Is set to be smaller than the angle β2.

When numerically compared, for example, α1 is 50
Assuming that the angle, β1 is 35 degrees, α2 is 60 degrees, and β2 is 80 degrees, when the guide groove is linear, the difference between β1 and β2 is large (35 degrees and 80 degrees), whereas the guide groove is linear. Groove 1
2b is curved, the difference between α1 and α2 is small (5
0 ° and 60 °), that is, the angles α1 and α2 are set to be substantially constant over the entire length of the guide groove 12b.

As shown in FIG. 4A, the electric components in the display 13 and the socket 4 in the chassis body 11
6 (for example, flexible P
CB) 47 is provided.

One end 47 a of the wiring member 47 is connected to the rear opening 13 near the upper fulcrum roller 43 of the display 13.
Then, the bent portion 47c which is pulled out of the front frame 12 and slacked downward to make a U-turn upward is put into the wiring pool portion 12f provided on the back of the front frame 12, and between the wiring pool portion 12f and the back surface of the display 13. Bent portion 47c or wiring member 4
7 is held.

The other end 47b of the wiring member 47 is connected to a socket 46 provided in the vicinity of the front opening 12a of the chassis body 11.

The operation of the above-described opening / closing structure of the display 13 will now be described.

As shown in FIG. 4A, it is assumed that the display 13 closes the front opening 12a of the front frame 12 in a substantially vertical state.

When the opening switch is turned on in this state, the motor 29 rotates forward and the speed reduction mechanisms 30, 32, 33, 35,
The drive gears 28, 28 rotate through the slip mechanism 37 and the slip mechanism 37, and the racks 17b, 17b cause the second sliding member 1 to rotate.
7L and 17R are slid forward.

The first sliding members 14L and 14R are also slid forward by the rack 14b via the interlocking gears 21 and 22 by the forward sliding of the second sliding members 17L and 17R.

With the front sliding of the second sliding members 17L and 17R,
As the lower end portions of the display 13 are moved forward by the lower fulcrum shafts 41, the upper fulcrum rollers 43, 43 are guided by the guide grooves 12b, 12b, whereby the upper end portion of the display 13 is moved downward.

As shown in FIG. 4B, the upper fulcrum roller 4
While the reference numerals 3 and 43 are located at the linear upper end portions 12c of the guide grooves 12b, the upper end of the display 13 hardly moves in the front-rear direction, and only the lower end moves forward. It becomes a tilt state inclined backward.

When it is desired to automatically restore the display 13 to the optimum tilt state, if the sliding stroke of the second sliding member 17R at that time is detected by the above-mentioned reflecting plate 39 and the photo sensor 40, the counter is set. The second sliding member 17 has a sliding stroke corresponding to the number of pulses counted by
By sliding R, the display 13 can be automatically restored to the optimum tilt state.

When the first sliding members 14L, 14R and the second sliding members 17L, 17R are further moved forward, FIG.
As shown in (2), as the lower end of the display 13 is further moved forward by the lower fulcrum shafts 41, 41, the upper fulcrum rollers 43, 43 are guided by the guide grooves 12b, 12b. Is further moved downward, and as shown in FIG.
3 is largely opened in a substantially horizontal state.

In the course of the opening operation of the display 13, the upper fulcrum rollers 43, 43 are moved by the guide grooves 12b,
When the upper portion 12d is curved backward, the upper end of the display 13 is moved rearward. Then, when the upper fulcrum rollers 43 reach the lower portion 12e which is curved forward, the upper end of the display 13 is moved. The part moves slightly forward from the position moved backward.

As a result, the upper end of the display 13 is largely drawn into the chassis body 11 as compared with the related art (see FIG. 7).
Even when the sliding stroke of 4, 17 (L, R) is short, the display 13 can be largely opened in a substantially horizontal state.

Further, since the guide grooves 12b, 12b continuously curve the upper portion 12d and the lower portion 12e,
The upper fulcrum rollers 43, 43 of the display 13 are smoothly guided over the entire length of the guide grooves 12b, 12b, and the opening and closing movement of the display 13 is also smooth.

Further, the angles α1, α2 of the upper portion 12d and the lower portion 12e of the guide grooves 12b, 12b are set to be substantially constant over the entire length of the guide grooves 12b, 12b.

That is, when the guide groove is linear, when the display 13 is pulled inward, the torque is large at the lower portion 12e, and the torque is small at the upper portion 12d. Since the upper fulcrum rollers 43, 43 of the display 13 are not guided by an average torque, the opening and closing movement of the display 13 is not smooth.

On the other hand, by setting the angles α1, α2 to be substantially constant over the entire length of the guide grooves 12b, 12b, the upper fulcrum rollers 43, 43 of the display 13 are guided by an average torque. So
The opening and closing movement of the display 13 becomes smoother.

During the movement of the display 13 from the substantially vertical state to the substantially horizontal state until the display 13 is largely opened (the same applies to the reverse movement), the bent portion 47c of the wiring member 47 always bends in the same direction, although the vertical position changes. So
No twisting or reversal of bending.

This eliminates the necessity of processing such as winding the wiring member 47, so that the processing structure is extremely simple, and that no excessive stress is applied to the wiring member 47, so that it is difficult to disconnect.

In the above embodiment, the large and small gear 2
With a gear ratio of 1, 22, each sliding member 14, 17 (L, R)
Is determined, a large and small gear for interlocking is provided on the drive gear 28, and the drive gear 28
17 (L, R) may be slid in conjunction with each other.

By eliminating the large and small gears for interlocking, the second
When the sliding member 17 (L, R) is slid back and forth by the motor 29, the end of the elongated hole 17c of the second sliding member 17 (L, R) is moved to the first sliding member 14 (L, R). The first sliding member 14 (L, R) can be slid forward and backward by interlocking by being hooked on the roller 16.

In the above-described embodiment, the sliding stroke of the second sliding member 17R is detected by the photo sensor 40.
And the sliding stroke may be detected by a pulse generated by the rotation of the rotary switch.

If a rotary type rotary switch that can detect forward and reverse rotation is used, the sliding direction and the sliding stroke can be detected more accurately.

Further, in the above embodiment, the sliding member 1
4, 17 (L, R) is divided into two parts.
When the depth of the first sliding member 14 (L,
R), the sliding stroke of the second sliding member 17 is increased.
(L, R) can be abolished.

[0067]

As is clear from the above description, the display opening / closing structure of the present invention has a structure in which the upper portion of the guide groove on the chassis body side is curved backward, so that the upper end portion of the display moves downward. Since the upper end can be moved rearward and drawn largely into the chassis body, even if the sliding stroke of the sliding member is short, the display can be largely opened in a substantially horizontal state, such as a cassette tape. Can be easily replaced.

In addition, the upper fulcrum of the upper end of the display is smoothly guided over the entire length of the guide groove by continuously bending the lower part of the display groove continuously to the upper part of the guide groove which is curved backward. Then, the opening and closing movement of the display becomes smooth.

Further, the angle formed by the center line of the guide groove and the straight line connecting the lower fulcrum of the lower end of the display and the upper fulcrum of the upper end thereof is substantially constant over the entire length of the guide groove. With this setting, the upper fulcrum of the upper end of the display is guided by an average moving force (torque) over the entire length of the guide groove, and the opening and closing movement of the display becomes smoother.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a right side portion of a display opening / closing structure according to the present invention.

FIG. 2 is an exploded perspective view of a left portion of the display opening and closing structure.

3A is a perspective view of a reflection plate of a sliding member and a photosensor, and FIG. 3B is a front view of a guide groove of a front frame.

FIG. 4 shows the relationship between a sliding member, a display, and a guide groove, wherein (A) is a side view of the display in a substantially vertical state,
(B) is a side view of the display in a tilted state.

5A and 5B show a relationship between a sliding member, a display, and a guide groove, wherein FIG. 5A is a side view of the display in the middle of movement, and FIG. 5B is a side view of the display in a substantially horizontal state.

FIG. 6 is a perspective view showing a relationship between a chassis main body, a front frame, and a display.

7A and 7B show a conventional relationship between a sliding member, a display, and a guide groove, wherein FIG. 7A is a side view of the display in a substantially vertical state, FIG. 7B is a side view of the display in a tilted state,
(C) is a side view of the display in a substantially horizontal state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Chassis main body 12 Front frame 12a Front opening 12b Guide groove 12c Upper end part 12d Upper part 12e Lower part 13 Display 14 First sliding member 17 Second sliding member 41 Lower fulcrum shaft 43 Upper fulcrum roller b (1,2) Straight c, e Center line α1, α2 Angle

 ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Masashi Sugimoto 1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi Harness Research Institute, Ltd.

Claims (3)

[Claims] A display is disposed in a substantially vertical state at a front opening of a box-shaped chassis main body, and a lower fulcrum of a lower end portion of the display is supported by a sliding member provided on the chassis main body so as to move in the front-rear direction. At the same time, the upper fulcrum of the upper end of the display is supported by a guide groove provided in the chassis body so as to move vertically, and the upper end moves downward while the lower end of the display moves forward, In the opening / closing structure in which the front opening of the chassis body is opened, the upper portion of the guide groove of the chassis body is curved rearward, and when the upper end of the display moves vertically, the upper end of the display moves backward. The opening and closing structure of the display, characterized in that: 2. The lower part of the guide groove of the chassis body,
2. The display opening / closing structure according to claim 1, wherein the display opening / closing structure is continuously curved forward at an upper portion. 3. An angle between a straight line connecting the lower fulcrum of the lower end of the display and the upper fulcrum of the upper end of the display and the center line of the guide groove is set so as to be substantially constant over the entire length of the guide groove. The display opening and closing structure according to claim 2.