JP2998312B2 - Opening and closing mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

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

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

[0004]

In the above-mentioned opening and closing mechanism of the portable compact disc player, the lock member pressing plate is formed of a sheet metal. For this reason, there is a possibility that an IC, a microcomputer, and the like, which are arranged close to the lock member pressing plate, may be broken by static electricity.
In addition, the lock member pressing plate enters the visual range of the user from the gap in the cabinet. Therefore, the lock member holding plate is painted or plated with black. For this reason, the number of man-hours increases, which causes an increase in cost. In addition, it is necessary to consider pollution measures in the painting and plating processes.

Accordingly, it is an object of the present invention to provide a low-cost, stable quality, and simplified opening / closing mechanism.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a cover rotatably mounted on a main body and a first spring portion for urging in a direction to be engaged with an engaging portion provided on the cover are integrated. A lock member that is formed on the cover and locks the lid in a closed state, an operating member that moves the lock member in a direction that is disengaged from the engagement portion of the lid, and a lock member that contacts the first spring portion and engages the lock member. A second spring portion for urging the engagement portion in a direction to be engaged with the joining portion, the second spring portion being integrally formed, and a lock member and an attachment member made of synthetic resin for attaching the operation member to a predetermined position of the main body; It is a body opening and closing mechanism.

[0007]

The mounting plate of the lock mechanism is formed of a synthetic resin of the same color as the cabinet, and the return of the open button utilizes the elasticity of the spring members formed on the lock member and a part of 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.
A lid 5 is attached to the upper cabinet 3 so as to be rotatable in a vertical direction with its rear end as a fulcrum. The cover 5 is provided with a window 6 through which the placement of the compact disc or the like can be confirmed.

Open button 7 for opening and closing lid 5
Is provided at the front 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 denotes a display window for displaying data of the compact disc. Display window 9
Displays data such as the total number of songs, the total time, the state of each mode, and the reproduction level. In the vicinity of the display window 9, control buttons 10a, 10b, 10 for mode switching and the like are provided.
c and 10d are provided. Operation buttons 8a, 8b, 8
c, display window 9, and control buttons 10a, 10b, 10
c and 10d are irradiated with backlights of two colors.

On the front face of the portable compact disc player 1, a hold switch 11 and a resume switch 12 are provided. On the right side, a headphone jack 13, a volume knob 14, and a line-out jack 15 for connecting to other devices are provided. On the other hand, on the left side, a remote jack 16, which is necessary when using the remote control,
Safety lock switch 17 and illumination switch 1 for preventing lid 5 from being accidentally opened 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 at a left front portion in the upper cabinet 3. Open button 7
Is pressed to open the lid 5, the disc guide lamp 19 is turned on, and the compact disc 20 can be used even in a dark place.
Can be easily mounted.

At the approximate center of the lid 5, a chucking portion 24 is provided.
Is provided, and is detachable from the lid 5 by sliding.

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

The cover 5 is constantly biased in the opening direction by a predetermined biasing means. When the cover 5 is closed by the biasing force, the cover 5 is placed in the cabinet 2. Locked by the formed lock mechanism. In other words, the engaging claw 22 is provided on the lower surface side of the front end of the lid 5, and the lock hole 25 is formed near the engaging claw 22. When the lid 5 is in the closed state, the engagement holes 2 formed in the upper cabinet 3
3, the locking claw 22 is engaged, and the lock hole 25 is locked by the lock mechanism.

As shown in FIGS. 1, 2 and 3, the lock mechanism comprises 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. You.

The lock member 40 has a substantially L-shaped configuration, and a shaft hole 41 formed in a bent portion thereof is rotatably supported by a shaft (not shown) protruding into the upper cabinet 3. Is done. For this reason, the lock member 40 is rotatable in the horizontal direction, that is, in the direction orthogonal to the opening and closing rotation direction of the lid 5. A notch 42 is formed near the shaft hole 41.
A lock claw 43 is formed at one end of the lock member 40 so as to be engaged with the lock hole 25 of the lid 5. The lock claw 43 is
It protrudes 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. In addition, a projection 46 is provided on the upper surface of the lock member 40, and an inclined surface 47 is located near the projection 46.

The open member 30 is disposed so as to overlap the lock member 40. A shaft portion 31 is formed at one end of the open member 30. The shaft 31 is supported by a bearing recess 31 a formed in the upper cabinet 3. For this reason, the open member 30 is rotatable in the vertical direction, that is, the direction orthogonal to the rotation direction of the lock member 40. In the vicinity of the shaft portion 31, a pressure stabilizing portion 32 is provided,
It is supported by a support portion of a mounting plate 50 described later. An open button 7 is formed at the other end of the open member 30, and an upper surface thereof has a hole 33 formed in the upper cabinet 3.
More exposed to the outside. On the lower side of the open button 7,
The triangular member 34 corresponding to the inclined surface 47 of the lock member 40 described above is protruded. 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 a protrusion groove 36 molded near the hole 33.

The mounting plate 50 is formed of a synthetic resin of the same color as the cabinet 2, for example, a black plastic. The shaft hole 51 penetrates through the shaft provided on the lower surface side of the upper cabinet 3 together with the shaft hole 41 of the lock member 40. At the same time, the shaft 53 of the upper cabinet 3 is inserted into the shaft hole 52. The upper cabinet 3 is screwed to the screw hole 55 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 concave portion 31a, and the lock member 40 is pressed so as not to come off from the shaft post.

The support portion 57 is in contact with the pressure stabilizing portion 32 and is flexible in the vertical direction. When the open button 7 is pressed, a pressing force is applied to the supporting portion 57 by the pressing stabilizing portion 32. Since the support portion 57 is flexible as described above, the support portion 57 absorbs the applied pressing force. Thus, even when a strong pressing force is applied to the open button 7, the lock mechanism is released only by a predetermined pressing force. That is, the lock mechanism is released only by applying a slight pressing force to the open button 7.

The press contact portion 58 is so formed that the shaft portion 31 of the open member 30 is supported by the bearing recess 31a of the upper cabinet.
As a result, the shaft portion 31 is pressed. One end of the spring portion 59 is in 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.
The shaft rotates in the lateral direction with the shaft column passing through the 0 shaft column hole 41 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 release operation ends, the elasticity of the spring member 45 pressed against the spring portion 59 returns the lock member 40 to the normal 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 returns to the normal position.

Lock member projections 60a, 60b, 60c
Is to reduce the joint area between the mounting plate 50 and the lock member 40 so that the lock member 40 is easily rotated. Thereby, the friction when the lock member 40 rotates on the mounting plate 50 is reduced, and the lock member 4
The rotation of 0 becomes smooth. The floating portion 61 includes the lock member 4.
It becomes a floating path for the zero projection 46. The through hole 62 is a through hole for allowing the triangular protrusion 34 to escape when the open button 7 is pressed to the maximum. The open button support 63 is for controlling the rotation of the open button 7. When the open button 7 is pressed to the maximum, the edge of the open button 7 is brought into contact with the open button support 63. You. The notch support 64 is provided with the lock member 4.
0 is controlled in the horizontal direction. That is, the lock member 4
When 0 rotates in the lateral direction, the notch 42 of the lock member 40 comes into contact with the notch support 63, and the lock member 40 is controlled so that it cannot rotate any further.

In the lock mechanism of the portable compact disc player thus configured, when the cover 5 is closed, the lock claw 43 is engaged with the lock hole 25 of the cover 5 and the cover 5 is locked. . 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 rotated downward as a whole, and the triangular protrusion 34 on the lower surface presses the inclined surface 47 of the lock member 40. For this reason, the lock member 40 is
Is rotated in a direction to be disengaged from the lock hole 25, whereby the lock of the lid 5 is released. The lid 5 is opened by the rotational biasing force of the predetermined urging means,
The compact disk 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 pressing the spring portion 59 of the mounting plate 50 by the spring member 45. After the lock release operation is completed, the spring member 4
The elastic member 5 returns to the normal position. Similarly, the open member 30 is returned to the normal position after the lock release operation is completed due to the elasticity of the spring member 45.

In this embodiment, the present invention is applied to a portable compact disc player, but the present invention is not limited to this.

[0026]

The spring member of the conventional lock member is often vulnerable to high temperatures, and is improved by increasing the thickness of the spring member. However, with a thick spring member, the load is high and the force for pressing the open button increases. However, according to the present invention, despite the thickness of the spring member being set to about 1.4 times, the spring member of the lock member and the spring portion of the mounting plate are pressed against each other. As well as being effective as a measure against high temperatures. Further, since the mounting plate is made of a synthetic resin, there are very few restrictions on the arrangement of the electric components, and the size of the product can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of one embodiment of the present invention viewed from below.

FIG. 3 is a plan view seen from below of one embodiment of the present invention.

FIG. 4 is a perspective view of a portable compact disc player to which the present invention is applied.

FIG. 5 is a left side view of a portable compact disc player to which the present invention is applied.

[Explanation of symbols]

 25 Lock hole 30 Open member 40 Lock member 43 Lock claw 50 Mounting plate

Claims (1)

(57) [Claims] A lid body rotatably attached to the main body, and a first spring part for urging the lid body in a direction to be engaged with an engagement part provided on the lid body, and the lid is integrally formed. A lock member for locking the body in a closed state; an operating member for moving the lock member in a direction to be disengaged from the engaging portion of the lid; and an abutment with the first spring portion and engaging the lock member with the engagement A second spring portion for urging the locking member and the operating member in a direction in which the locking member and the operating member are integrally formed, and a mounting member made of synthetic resin for mounting the locking member and the operating member at predetermined positions of the main body. Body opening and closing mechanism.