JPH11176145A - Door structure of recording medium reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce reinforcement parts and to easily assemble door structure by allowing a support side hole to pass a support side line part and a support projection being provided at the opposite side of a recessed part at the support side hole to touch the middle part of the support side line part of a return spring. SOLUTION: A coil winding part 50 of a spring 4 is stored and fixed to a recessed part 4. An action point side line part 51 and a support side line part 52 project from a hole being provided at the recessed part 14 and touches each door body part 2 and a body part 1. On assembly, first, the spring 4 is inserted into the recessed part 14 of the body part 1. At thus time, the action point side line part 51 projects toward the upper portion of the recessed part 14 and the support side line part 52 projects toward the lower portion of the recessed part 14. Then, a door 5 is engaged to a disk-loading hole 10. The connection projecting wall of a door cover part 3 is forced into a connection groove 22 of the door body part 2, thus connecting the door body part 2 and the door cover part 3 and preventing the part of a rotary shaft, a rib, and the like from being seen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door structure for covering a loaded portion of a medium such as a disk in a disk player such as a CD player or a recording medium reproducing apparatus such as a cassette tape player.

[0002]

2. Description of the Related Art Disc players such as CD players,
2. Description of the Related Art A recording medium reproducing device such as a cassette tape player is generally provided with a door for protecting a recording medium loaded portion such as a disk. For such a type of door, a structure suitable for a method of loading a disk or the like is used. In the case of a reproducing apparatus of a type in which a user directly loads a disk or the like to a loading position by hand, a door having a rotating structure is often used. The door of this rotating structure has a structure in which a flat door body is axially fixed to the reproducing apparatus body side, and the door body is constantly urged to the open side by a spring. When the door is closed, the door body is engaged. When the door is opened, the locked state is released by a button operation or the like, and the door is opened by the elastic force of a spring.

[0003]

In such a door having a rotating structure, since the elastic force of the spring is relatively strong, a problem occurs in a portion applied to a contact portion between the spring and the apparatus body or the door. For example, because the force of the spring is strong, the abutting part of the device body is deformed, especially when it comes into contact with the back side of the device surface, etc., and the appearance deteriorates.Therefore, it is necessary to install a reinforcing iron plate. is there. In addition, when the tip of the spring hits the door or the main body of the device, the tip of the spring is relatively sharp, so it is pierced, and the movement of the door becomes poor, or if it is severe, it will not be able to open and close. It is also possible to fall. In addition, the spring is usually mounted by inserting a winding portion of the spring around the rotating shaft, applying a force opposing the elastic force of the spring to bring the spring into a predetermined state, and loading both ends of the spring at predetermined positions. Therefore, there is a problem that the work is difficult.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a door structure of a recording medium reproducing apparatus in which the number of parts for reinforcement can be reduced and the assembling operation is easy.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a rotatable door body for covering a recording medium loading section, a winding section, and a device side of a recording medium reproducing apparatus. And a return spring that urges the door body to the open side, comprising a fulcrum side line part abutting on the door body and an action side line part abutting on the door body. A concave portion provided on the side thereof, in which the winding portion of the return spring is housed and fixed; a working side hole provided in the concave portion, through which a working side line portion of the return spring passes; A fulcrum-side hole through which the fulcrum-side line portion passes, and a fulcrum protrusion provided on the opposite side of the fulcrum-side hole from the concave portion and abutting on an intermediate portion of the fulcrum-side line portion of the return spring.

Further, in such a configuration, a groove provided in the door body and extending in a direction in which the operation side line portion of the return spring extends, and a groove provided in the groove portion and operating on the operation side line portion of the return spring. An intermediate portion is in contact with the return spring and the sliding projection is brought into a sliding state by opening and closing the door body. A door body rotatably fixed to the shaft covering the recording medium loading portion, a winding portion, a fulcrum side line portion abutting on the device body side of the recording medium reproducing device, and an operation side line portion abutting on the door body. And a return spring for urging the door body to the open side, wherein the door structure is provided on the door body and extends in a direction in which the action side line portion of the return spring extends. And a sliding projection that is provided in the groove, a middle part of the action side line portion of the return spring abuts, and is slid with the return spring by opening and closing operation of the door body. I do.

[0007]

Next, an embodiment of the present invention will be described. FIG. 1 is a configuration diagram showing a structure near a door of a disc player according to an embodiment of the present invention. For simplicity of description, only the main part is described, and a disk turntable and an optical pickup for reading signals that are not directly related to the door structure are omitted.

The door structure mainly includes a disk drive mechanism of the disk player, a signal processing unit, an audio circuit such as an amplifier, and a main body 1 molded of resin or the like constituting an outer casing of the disk player, and a door. And a door cover 3 having an L-shaped cross section, which covers the door main body 2 and is formed of resin or the like, and a return force in the opening direction to the door main body 2. The door 5 is constituted by a spring 4 to be provided, and the door body 2 and the door cover 3 are connected to each other.

First, the configuration of the main body 1 will be described. A disc loading hole 10 is formed on the upper surface of the main body 1 to form a disc loading space. At the bottom of the disc loading hole 10, a turntable on which the disc is mounted, an optical pickup for reading a signal from the disc, and the like are provided. A drive section hole 11 is provided for projecting into the disc loading space.
The disc loading hole 10 is also open on the back side of the main body 1. At the edge of the disc loading hole 10, there is formed a step portion 12 which contacts the outer peripheral end of the door 5 when the door 5 is closed and performs positioning in the closed state of the door 5. An axial projection 13 for fixing the door main body 2 to the upper side of the rear open side end of the side face of the disc loading hole 10 projects.
Reference numeral 3 denotes a shape in which the corners of a rectangular parallelepiped having a slightly longer vertical direction than the horizontal direction are chamfered.

At the bottom of the disc loading hole 10, a recess 14 for storing and fixing the spring 4 and a gear structure hole 15 into which a gear plate for regulating the opening speed of the door 5 when the door 5 described later is opened are inserted. Provided on the side of the disc loading hole 10,
A recess 16 into which a protrusion for preventing the door 5 from slipping, which will be described later, enters.
Is provided. A push button 17 for door opening operation is provided in the vicinity of the lower right of FIG. Each part of the disc loading hole 10 is integrally molded with the main body 1 by resin molding.

Next, the door body 2 will be described with reference to FIG. 2A and 2B are configuration diagrams showing the structure of the door main body 2, wherein FIG. 2A is a bottom view, FIG. 2B is a top view, and FIGS.
Is a side view. The outer shape of the door body 2 is slightly smaller than the shape formed by the inner side of the step 12 of the disc loading hole 10, and ribs 21 are provided at various places for maintaining strength, reducing material, and reducing weight. . A coupling groove 22 for coupling to the door cover 3 is provided along the outer periphery of the upper surface. Note that the bottom surface of the door body 2 is visible when the door 5 is opened, and thus is subjected to a surface treatment for improving the appearance.

Further, bearing portions 23 which are engaged with the shaft projections 13 and constitute a rotating shaft are formed at both ends on both sides of the door body 2 in FIG. The bearing 23 has a substantially circular shape whose diameter is substantially the same (slightly smaller) as the major axis of the shaft projection 13, and whose open portion is smaller than the major axis of the shaft projection 13 and whose dimension is substantially the same (slightly larger) than the minor axis. A circular hole 24 and an open hole 25 having a slightly smaller width on the side of the circular hole 24 that opens the circular hole 24 to the outside space are provided. The circular hole 24 and the open hole 25 are provided to protrude from the door cover 3. It is formed on the protruding wall 26.

The rear end of the door main body 2 on the right side in FIG. 1 is formed in a downward direction in FIG. The gear plate 24 is formed with a locking projection 28 for preventing the door body 2 from coming off the main body 1.
Is provided. A substantially fan-shaped retaining plate 29 formed toward the lower side in FIG. 1 is formed at the rear end of the door body 2 on the left side in FIG. 1. The retaining plate 29 has a main body of the door body 2. Retaining projections 3 for preventing detachment from the part 1
0 is provided. Then, FIG.
A locking projection 31 for locking the door 5 formed toward the lower side in FIG. 1 in a closed state is formed at a front end of the right side of the locking projection 31. Is formed with a locking claw 33 having a slope 32 at the tip. A spring groove 3 in which a linear portion at one end of the spring is located on the bottom surface of the door body 2.
The spring groove 32 is provided with a contact projection 33 with which a spring abuts. Each part of the door main body 2 is integrally molded with the door main body 2 by resin molding.

Next, the door cover 3 will be described with reference to FIG. FIGS. 3A and 3B are configuration diagrams showing the structure of the door cover 3, wherein FIG. 3A is a bottom view, FIG. 3B is a top view, and FIG. 3C is a side view. The outer shape of the door cover 3 is the disk loading hole 1
It is formed in a shape that is slightly smaller than the outer shape of No. 0 (shape on the step 12). On the bottom surface of the door cover 3, a connecting protrusion 35 for connecting to the connecting groove 22 is provided in a protruding manner, and the connecting protrusion 35 has a connecting protrusion for increasing the connecting force with the door body 2. 26 (door body 2
The fitting groove 22 is provided with a fitting hole at a corresponding position for fitting the fitting projection 2). In addition, since the upper surface of the door cover portion 3 becomes the upper surface design of the disc player, it is subjected to a surface treatment for improving the appearance and decorated with characters and the like.

The spring 4 is formed by winding a highly elastic metal wire such as stainless steel, phosphor bronze, or the like. An operation point side line portion 51 for applying a restoring force and a fulcrum side line portion 52 that comes into contact with the main body 1 and become a fulcrum portion. The winding portion 4 of the spring 4 is housed and fixed in the concave portion 14, and the action point side line portion 51 and the fulcrum side line portion 52 protrude from the holes provided in the concave portion 14, respectively. Abut.

Next, an assembling method will be described. First, the spring 4 is inserted into the concave portion 14 of the main body 1. At this time, the action point side line portion 51 projects above the recess 14 in FIG. 1, and the fulcrum side line portion 52 projects below the recess 14 in FIG. Then, the door 5 is fitted into the disc loading hole 10. Finally, the connecting projection 35 of the door cover 3 is press-fitted into the connecting groove 22 of the door main body 2, and the door main body 2 and the door cover 3 are connected to each other. Not to be. At this time, if necessary, the bonding strength may be increased by using an adhesive or the like.

Next, a method of fitting the door 5 into the disk loading hole 10 will be described with reference to FIG. FIG. 4 is a schematic configuration diagram showing a schematic structure of the door shaft stopping mechanism, and FIG.
(B) shows when the insertion is completed. First, the door body 2 is set up,
The shaft projection 13 is inserted into the opening 25 with the opening 25 of the bearing portion 23 facing the shaft projection 13. At this time, the shaft projection 13
Is smaller in width in the direction of entry into the open hole 25, so that the shaft projection 13 reaches the circular hole 24. Then, it is rotated to the position shown in FIG. 4B (the door 5 is closed). At this time, since the retaining protrusions 28 and 30 hit the wall surface of the main body 1 and the like, the gear plate 27 and the retaining plate 29 are moved. Bend it,
It is inserted into the gear structure hole 15 and the recess 16. Door 5 in FIG.
When rotated to the position (B), the shaft projection 13 is
5, the shaft projection 13 cannot escape from the circular hole 24, the retaining projection 28 is hooked on the edge of the gear structure hole 15, and the retaining projection 30
Is caught in the recess 16 and the door 5 is prevented from falling out of the disc loading hole 10.

A damper gear 52 for performing a shock-absorbing operation is provided below the gear structure hole 15, and when the gear plate 27 shown in FIG. The teeth 51 and the teeth 53 of the damper gear 52 mesh with each other so that the door 5 opens at an appropriate speed when the door 5 is opened. The die gear 52 can be configured using existing components such as an oil die and a friction damper.

In the method of removing the door 5 from the disk loading hole 10, first, the door 5 is turned to the state shown in FIG. In this state, the width of the shaft projection 13 in the direction of intrusion into the open hole 25 is smaller, so that the shaft protrusion 13 can be pulled out from the circular hole 24. At this time, the retaining projection 2
Since the gears 8 and 30 are caught on the edge of the gear structure hole 15, the edge of the recess 16, and the like, the gear plate 27 and the retaining plate 29 are bent, and the door 5 is removed from the disk loading hole 10.

Next, the door return mechanism will be described. FIG.
FIG. 3 is a schematic configuration diagram illustrating a schematic structure of a door return mechanism. The spring 4 for applying a return (opening) force to the door 5 is stored in the recess 14. The recess 14 is formed integrally with the main body 1 in a space for accommodating the spring 4.
A tongue piece 62 is provided for holding the tongue 4 from falling out.
Further, an insertion hole 63 through which the fulcrum side line portion 51 of the spring 4 is inserted is provided. Then, the insertion hole 63 on the opposite side to the recess 14 is formed.
A fulcrum projection 64 with which the fulcrum side line portion 51 of the spring 4 abuts is protruded from the edge of the spring 4 (integrally molded with the main body portion 1), and
The middle part of 1 (not the tip) is in contact. Also,
A projection reinforcing rib 65 for reinforcing the fulcrum projection 64 is integrally provided with the fulcrum projection 64. The action point side line portion 51 of the spring 4 projects from the recess 14 toward the disk loading hole 10, the action point side line portion 51 extends along the spring groove 32, and an intermediate portion thereof contacts the contact protrusion 33. It has become.

With such a configuration, the door 5 has the spring 4
Elastic force in the opening direction is applied. The center of rotation of the door 5 and the winding part 50 of the spring 4 do not match, and the door 5
With the rotation of the spring 4, the action point side line portion 51 of the spring 4 becomes the spring groove 32.
However, since the intermediate portion of the action point side line portion 51 of the spring 4 slides on the contact protrusion 33, the spring 4
, The tip of the action point side line portion 51 does not pierce the door 5, and the door 5 can be smoothly opened and closed.

Next, the door opening operation mechanism will be described. FIG. 6 is a schematic configuration diagram illustrating a schematic structure of the door opening operation unit. The door opening operation mechanism includes a push button 17, an operation unit 70, and a locking projection 31 provided on the door body 2. The operation section 70 is formed of resin, and is fixed to the main body 1 so as to be rotatable about an operation shaft 71. The operating portion 70 is formed with an elastic piece 72 having an end contacting the main body 1 to apply an elastic force in the direction of arrow A, and a locking claw 73 having a slope 74 at its tip. ing. In addition, an operation tongue piece 75 is formed on the operation piece 70,
The action rod 71 of the push button 17 is in contact.

Next, the operation will be described. When the door 5 is closed, the locking claw 73 and the locking claw 33 are engaged. Here, push button 1
When the operating tongue 7 is pressed, the operating tongue piece 75 is pressed by the operating rod 7, and the operating section 70 rotates in the direction of arrow B about the operating axis.
Then, the engagement between the locking claw 73 and the locking claw 33 is released, and the door 5 is opened by the elastic force of the spring 4. When the pressing of the push button 17 is released, the action portion 7 is
0 returns to the same position as the door 5 closed state. Also, when the door 5 is pressed and moved in the closing direction, the slope 32 of the locking claw 33 presses the slope 74 of the locking claw 73, and the action section 70 rotates in the B direction. Then, the locking claw 33 gets over the locking claw 73. At the same time, the pressing state of the inclined surface 32 of the locking claw 33 against the inclined surface 74 of the locking claw 73 is released, and the action portion 70 returns to the same position as the closed state of the door 5 by the elastic force of the elastic piece 72. For this reason, the locking claw 73 and the locking claw 33 are engaged, and the door 5 is kept in the closed state.

As described above in detail, according to the present embodiment, the spring 4 is stored and fixed in the concave portion 14 instead of the rotating shaft, so that it is difficult to insert the shaft into the bearing while opposing the spring force. Since there is no need to perform operations such as fixing, assembly is facilitated. In addition, the contact portion between the spring 4 and the main body 1 can be set at a position that is not so related to the pivot axis of the door, and a structure that increases the strength of the contact portion can be relatively freely formed. , And an appropriate door structure can be realized at low cost. In addition, since the door cover portion 3 can hide the bearing portion and the reinforcing ribs, which have poor appearance, the appearance of the product can be improved.

[0025]

As described in detail above, according to the present invention, it is possible to realize a door structure of a recording / reproducing apparatus which has good appearance, has a small number of parts, and is easy to assemble.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a structure near a door of a disc player according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing a structure of a door body 2.

FIG. 3 is a configuration diagram illustrating a structure of a door cover unit 3;

FIG. 4 is a schematic configuration diagram illustrating a schematic structure of a door shaft stopping mechanism.

FIG. 5 is a schematic configuration diagram illustrating a schematic structure of a door return mechanism.

FIG. 6 is a schematic configuration diagram illustrating a schematic structure of a door opening operation unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Body part 2 ... Door body part 3 ... Door cover part 4 ... Spring 5 ... Door part

Claims (3)

[Claims] 1. A door main body rotatably fixed to cover a recording medium loading portion, a winding portion, a fulcrum side line portion abutting on a device main body side of a recording medium reproducing device, and an operation of abutting on the door main body. In a door structure of a recording medium reproducing device, comprising a side line portion and a return spring for urging the door body to the open side, a winding portion of the return spring provided on the device body side and housed and fixed. A working side hole provided in the recess, through which the working side line portion of the return spring passes; a fulcrum side hole provided in the recess, through which the fulcrum side line portion of the return spring passes; A fulcrum projection provided on a side opposite to the concave portion and abutting on an intermediate portion of a fulcrum side line portion of the return spring. 2. A groove provided in the door main body and extending in a direction in which an operation side line portion of the return spring extends, and an intermediate portion of the operation side line portion of the return spring provided in the groove portion, 2. A door structure for a recording medium reproducing apparatus according to claim 1, wherein said door structure comprises said return spring and a sliding projection which is brought into a sliding state by opening and closing said door body. 3. A door body rotatably fixed to a shaft covering a recording medium loading portion, a winding portion, a fulcrum side line portion abutting on a device body side of the recording medium reproducing device, and an action of abutting on the door body. In the door structure of the recording medium reproducing apparatus, comprising a side line portion and a return spring for urging the door body to the open side, provided in the door body, in a direction in which the action side line portion of the return spring extends. An extended groove portion, and a sliding projection provided in the groove portion, wherein an intermediate portion of an operation side line portion of the return spring abuts, and is slid with the return spring by opening and closing operation of the door body. A door structure of a recording medium reproducing apparatus characterized by the above-mentioned.