JPH0594690A - Opening and closing mechanism - Google Patents

Abstract

PURPOSE:To eliminate the assembling man-hour by simplifying the constitution of the opening and closing mechanism and also to stabilize the quality and attain low cost. CONSTITUTION:A cover is attached to a cabinet 1 of a portable type compact disk player in freely rotatably state. To the cover, an arm part provided a recessed part having a circular arc form at the cross-section is attached. A steel ball 4 engaged with the recessed part is pressed to contact with the arm part by using a compression coil spring 5. By using an open spring 3, the arm part is energized to the opening direction of the cap. A hollow part of the open spring 3 is penetrated with a projection part 2a of an open spring base plate 2 and also the compression coil spring 5 is held with an upper surface 2d of the open spring base plate 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing mechanism.

[0002]

2. Description of the Related Art Portable and portable compact disc players have been put into practical use. The lid opening / closing mechanism in such a portable compact disc player prevents the lid from being opened with respect to the lid that is rotatably arranged in the cabinet in the direction to open / close the loading portion of the compact disc. The locking means for locking in the closed position is arranged on the cabinet side.

The locking means comprises a locking member for locking the lid by engaging an engaging portion provided on the lid, and a locking member pressing plate for fixing the locking member in the closed position. By pressing the operation button for unlocking the lid, the lid is rotated in the opening direction so as to be disengaged from the engaging portion of the lock member.

[0004]

In the opening / closing mechanism of the portable compact disc player described above, the lock member pressing plate is formed of a metal plate. For this reason, there is a possibility that an IC, a microcomputer, or the like arranged near the lock member pressing plate may be destroyed by static electricity.
Further, the lock member pressing plate enters the visual range of the user through the gap between the cabinets. Therefore, the lock member pressing plate is painted black or plated. For this reason, the number of man-hours increases, which causes a cost increase. Furthermore, it is necessary to consider pollution control measures in the painting and plating processes.

Therefore, an object of the present invention is to provide an opening / closing mechanism that is low in cost, stable in quality, and simplified.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a lid body rotatably attached to a main body and a first spring portion for urging the engaging portion provided on the lid body in a direction of engaging with the engaging portion are integrated. And a lock member for locking the lid in a closed state, an operating member for moving the lock member in a direction to disengage from the engaging portion of the lid, and a lock member engaging with the first spring portion and engaging with the lock member. A second spring part that is integrally formed to urge the mating part in a direction to be engaged with the lock part and a mounting part made of a synthetic resin for mounting the operating member at a predetermined position of the main body. It is a body opening and closing mechanism.

[0007]

The mounting plate of the lock mechanism is made of a synthetic resin of the same color as that of the cabinet, and the return of the open button utilizes the elasticity of each spring portion formed on a part of the locking member and the mounting plate.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a portable compact disc player will be described below with reference to the drawings. 4 and 5 are a perspective view and a left side view of a portable compact disc player to which the present invention is applied. Reference numeral 1 denotes a portable compact disc player as a whole. Reference numeral 2 denotes a cabinet, which includes an upper cabinet 3 and a lower cabinet 4.
The lid 5 is attached to the upper cabinet 3 so as to be vertically rotatable about a rear end of the lid 5 as a fulcrum. The lid 5 is provided with a window 6 so that the placement of the compact disc or the like can be confirmed through the window 6.

Open button 7 for opening and closing lid 5
Is provided in the front part of the upper cabinet 3. With this,
Operation buttons 8a, 8b, 8c for controlling the operations of the compact disc and the device itself are provided. Reference numeral 9 is a display window for displaying data on the compact disc. Display window 9
On the screen, data such as the total number of songs, total time, state of each mode, and reproduction level is displayed. Control buttons 10a, 10b, 10 for switching modes and the like are provided near the display window 9.
c and 10d are provided. Operation buttons 8a, 8b, 8
c, display window 9, and control buttons 10a, 10b, 10
Backlights of two colors are illuminated on c and 10d.

A hold switch 11 and a resume switch 12 are provided on the front surface of the portable compact disc player 1. A headphone jack 13, a volume knob 14, and a line-out jack 15 for connecting to other devices are provided on the right side surface. On the other hand, on the left side, the remote jack 16, which is required when using the remote control,
Safety lock switch 17 and illumination switch 1 for preventing lid 5 from accidentally opening during playback
8 are provided. Further, a DC jack (not shown) for an AC adapter is provided on the back surface, and a battery terminal (not shown) is provided on the bottom surface.

A disk guide lamp 19 is provided on the left front part of the upper cabinet 3. Open button 7
When is pressed and the lid 5 is opened, the disc guide lamp 19 is turned on, and the compact disc 20 is turned on even in a dark place.
Can be easily mounted.

A chucking portion 24 is provided at a substantially central portion of the lid body 5.
Is provided and can be detached from the lid 5 by sliding.

When the lid 5 is closed, the open switch 21 provided in the front engaging hole of the upper cabinet 3 is pressed by the engaging claw 22 provided in the front portion of the lid 5. Also,
The engaging claw 22 is engaged with the engaging hole 23.

The lid 5 is constantly biased in the opening direction by a predetermined biasing means. When the lid 5 is closed by the biasing force, the lid 5 is placed inside the cabinet 2. It is locked by the formed lock mechanism. That is, the engaging claw 22 is provided so as to project from the lower surface side of the front end portion of the lid body 5, and the lock hole 25 is formed in the vicinity of the engaging claw 22. When the lid 5 is in the closed state, the engagement hole 2 formed in the upper cabinet 3
The engaging claw 22 is engaged with 3, and the lock hole 25 is locked by the lock mechanism.

As shown in FIGS. 1, 2 and 3, this lock mechanism is composed of an open member 30, a lock member 40 and a mounting plate 50 for mounting the open member 30 and the lock member 40 to the upper cabinet 3. It

The lock member 40 has a substantially L-shape, and a shaft column hole 41 formed in a bent portion thereof is rotatably supported by a shaft column (not shown) projecting from the upper cabinet 3. To be done. Therefore, the lock member 40 is rotatable in the lateral direction, that is, in the direction orthogonal to the opening / closing rotation direction of the lid body 5. A cutout 42 is formed near the shaft hole 41.
A lock claw 43 that engages with the lock hole 25 of the lid 5 is formed at one end of the lock member 40. The lock claw 43 is
It is projected from the lock claw hole 44 of the upper cabinet 3. On the other hand, a spring member 45 corresponding to a spring portion of the mounting plate 50 described later is molded on the other end. Further, a protrusion 46 is provided on the upper surface of the lock member 40, and an inclined surface 47 is located in the vicinity thereof.

The open member 30 is arranged so as to overlap the lock member 40. A shaft portion 31 is formed at one end of the open member 30. The shaft portion 31 is pivotally supported in a bearing recess 31 a formed in the upper cabinet 3. Therefore, the open member 30 is rotatable in the vertical direction, that is, in the direction orthogonal to the rotating direction of the lock member 40. A press stabilizing portion 32 is provided near the shaft portion 31,
It is supported by the supporting portion of the mounting plate 50 described later. The open button 7 is formed at the other end of the open member 30, and the top surface of the open button 7 is formed in the hole 33 formed in the upper cabinet 3.
More exposed to the outside. On the bottom side of the open button 7,
The triangular member 34 corresponding to the inclined surface 47 of the lock member 40 described above is projected. The inclined surface 47 is pressed by the triangular member 34. A protrusion 35 is provided at the tip of the open button 7. The protrusion 35 is fitted into the molded protrusion groove 36 in the vicinity of the hole 33.

The mounting plate 50 is made of a synthetic resin of the same color as the cabinet 2, for example, black plastic. The shaft column hole 51 is penetrated by the shaft column hole 41 of the lock member 40 and the shaft column provided on the lower surface side of the upper cabinet 3. At the same time, the shaft post 53 of the upper cabinet 3 is inserted into the shaft post hole 52. Further, it is screwed into the screw hole 55 of the upper cabinet 3 through the screw hole 54. The outer peripheral portion of the screw hole 54 is fixed by a screw hole fixing portion 56 provided adjacent to the screw hole 55.

By fixing the mounting plate 50 to the upper cabinet 3 in this manner, the open member 30 and the lock member 40 are held at predetermined positions with respect to the upper cabinet 3. That is, the shaft portion 31 of the open member 30 is pressed so as not to come off from the bearing recess 31a, and the lock member 40 is pressed so as not to come off from the shaft pillar.

The support portion 57 is to be brought into contact with the pressure stabilizing portion 32 and is flexible in the vertical direction. When the open button 7 is pressed, the pressing stabilizing portion 32 applies a pressing force to the support portion 57. Since the support part 57 is flexible as described above, it absorbs the applied pressing force. As a result, even when a strong pressing force is applied to the open button 7, the lock mechanism is released only with a predetermined pressing force. That is, the lock mechanism is released only by applying a light pressing force to the open button 7.

The pressure contact portion 58 is provided so that the shaft portion 31 of the open member 30 is axially supported by the bearing recess 31a of the upper cabinet.
Thus, the shaft portion 31 is pressed. One end of the spring portion 59 is brought into contact with one end of the spring member 45 of the lock member 40. When the open button 7 is pressed, the lock member 4 is correspondingly pressed.
It rotates in the lateral direction with the shaft column passing through the shaft column hole 41 of 0 as a fulcrum. The pressing force is applied to the spring member 45, and as a result,
The spring member 45 is pressed against the spring portion 59. When the lock releasing operation is completed, the elasticity of the spring member 45 pressed against the spring portion 59 returns the lock member 40 to the steady position. Therefore, the triangular member 34 of the open member 30 slides on the inclined surface 47 of the lock member 40, and the open member 30 is returned to the steady position.

Lock member protrusions 60a, 60b, 60c
Is for reducing the joint area between the mounting plate 50 and the lock member 40 so that the lock member 40 can be easily rotated. This reduces friction when the lock member 40 rotates on the mounting plate 50, and the lock member 4
The rotation of 0 becomes smooth. The floating portion 61 is the lock member 4
It is a floating path of the protrusion 46 of 0. The through hole 62 is a through hole that allows the triangular protrusion 34 to escape when the open button 7 is pressed to the maximum. The open button support portion 63 is for controlling the rotation of the open button 7, and when the open button 7 is pressed to the maximum, the edge portion of the open button 7 is brought into contact with the open button support portion 63. It The notch support portion 64 is used for the lock member 4
Controls lateral rotation of 0. That is, the lock member 4
When 0 rotates in the lateral direction, the notch 42 of the lock member 40 is brought into contact with the notch support 63, and the lock is controlled so as not to rotate any further.

In the lock mechanism of the portable compact disc player thus constructed, when the lid 5 is closed, the lock claw 43 is engaged with the lock hole 25 of the lid 5 to lock the lid 5. .. When the lid 5 is opened, the lock is released by pressing the open button 7. That is, when the open button 7 is pressed, the open member 30 is entirely rotated downward, and the triangular protrusion 34 on the lower surface thereof presses the inclined surface 47 of the lock member 40. Therefore, the lock member 40 is locked by the lock claw 43.
Is rotated in a direction to be disengaged from the lock hole 25, whereby the lid 5 is unlocked, so that the lid 5 is opened by a rotational biasing force of a predetermined biasing means.
The compact disc 20 can be taken in and out.

In the unlocking operation of the lid 5, the lock member 40 is rotated in the unlocking direction against the elasticity of the spring member 45 by the spring member 45 pressing the spring portion 59 of the mounting plate 50. After completing the unlocking operation, the spring member 4
The elasticity of 5 restores the normal position. Similarly, the open member 30 is also returned to the steady position by the elasticity of the spring member 45 after the unlocking operation is completed.

Although the present invention is applied to the portable compact disc player in this embodiment, the present invention is not limited to this.

[0026]

The spring member of the conventional lock member is often vulnerable to a high temperature and can be improved by increasing the thickness of the spring member. However, with a thick spring member, the load becomes high and the force of pushing the open button increases. However, in the present invention, since the spring member of the lock member and the spring portion of the mounting plate are brought into pressure contact with each other even though the thickness of the spring member is set to about 1.4 times, a spring force with a low load can be obtained. In addition to being able to do so, it is also effective as a measure against high temperatures. Further, since the mounting plate is made of synthetic resin, there are very few restrictions on the arrangement of electric parts, and the product size can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a portable compact disc player to which the present invention is applied.

FIG. 2 is a plan view of an opening / closing arm.

FIG. 3 is a perspective view of a lid and an opening / closing arm.

FIG. 4 is a perspective view of a portable compact disc player used for explaining a conventional technique.

FIG. 5 is a plan view of an opening / closing arm used for explaining a conventional technique.

FIG. 6 is a diagram used for explaining a conventional technique.

FIG. 7 is a diagram used for explaining a conventional technique.

[Explanation of symbols]

 1 Cabinet 2 Open spring substrate 3 Open spring 4 Steel ball 5 Coil spring

Claims (1)

[Claims] 1. A lid body rotatably attached to a main body and a first spring portion for urging the lid body in a direction to engage with an engaging portion provided on the lid body are integrally formed and the lid is provided. A lock member that locks the body in a closed state, an operation member that moves the lock member in a direction in which the lock member is disengaged from the engagement portion of the lid body, and the lock member is in contact with the first spring portion and the lock member is engaged with the lock member. A second spring part that is integrally biased in a direction to engage the locking part and a mounting member made of synthetic resin that mounts the lock member and the operating member at a predetermined position of the main body. Body opening and closing mechanism.