JP4284523B2 - Opening / closing mechanism of outer lid of recording / reproducing apparatus - Google Patents

Description

  The present invention relates to an opening / closing mechanism for an outer lid of a recording / reproducing apparatus, and more particularly to an opening / closing mechanism for an outer lid of a recording / reproducing apparatus in which an outer lid is attached to the outside of a cassette mounting portion so as to be freely opened and closed.

  For example, Japanese Patent Laid-Open No. 7-134853 discloses a casing, an outer lid attached to the casing so as to be freely opened and closed, a space defined by the outer lid and the casing, and driving a video cassette. In a video camera having a mechanical deck, a cassette holder capable of attaching / detaching a video cassette, and a sliding mechanism for sliding the cassette holder with respect to the mechanical deck, a support mechanism for supporting the mechanical deck so as to be swingable on the housing side. Further, a coupling mechanism is provided between the outer lid and the mechanical deck that swings the mechanical deck in conjunction with opening and closing of the outer lid and tilts the mechanical deck toward the outer lid with the outer lid opened. A mechanical deck support structure for a video camera is disclosed.

  According to such a mechanical deck support structure, it is possible to attach the outer lid firmly, enhance the robustness of the housing, increase the sense of quality, enhance the drip-proof property, simplify the housing structure and reduce the diameter. It will be. According to the structure in which a grip belt is attached to the outer surface of the outer lid and the casing of the video camera is held by the grip belt via the outer lid, the weight of the video camera must be supported via the outer lid. For this reason, it is necessary that the outer lid is securely locked in a closed state.

  Therefore, for example, Japanese Patent Laid-Open No. 11-242842 discloses a cassette lid opening / closing mechanism of a recording / reproducing apparatus in which a cassette lid can be opened and closed by a rotation fulcrum portion in a main body cabinet and locked in a closed position by a lock mechanism. , A guide guide piece having a guide groove is provided on the frame on the open end side opposite to the rotation fulcrum of the cassette lid, and a guide pin into which the guide groove is drawn in the cassette lid closing operation is provided inside the main body cabinet. Further, there is disclosed a cassette lid opening / closing mechanism of a recording / reproducing apparatus in which a position regulating arm is provided on both sides of the cassette lid so that the position regulating arm is guided by the inner wall surface of the main body cabinet in the opening / closing operation of the cassette lid.

  According to such a configuration, it is possible to obtain a cassette lid opening / closing mechanism of a recording / reproducing apparatus capable of guiding the cassette lid to a normal closing position by adding a simple function and enabling a permanent and pleasant locking operation. .

  However, according to the lock mechanism of the cassette lid opening / closing mechanism disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 11-242842, the outer lid is attached so as to be pivotable laterally around its bottom, and corresponds to the upper portion of this cassette lid. Thus, a lock mechanism is provided on the main body cabinet side. Therefore, it is necessary to provide a lock mechanism at the upper position of the mechanical deck, which causes a disadvantage that the dimension in the height direction of the product increases. Even when the outer lid is configured to be pivotable with its upper end as a hinge portion and a lock mechanism is provided on the bottom side of the outer lid, there is a drawback that the height dimension of the video camera is similarly increased.

In addition, when the charge mechanism is provided in the lock mechanism, there are variations in the lock timing, and there are disadvantages in that problems such as half-lock are likely to occur.
Japanese Patent Application Laid-Open No. 7-134853 Japanese Patent Laid-Open No. 11-242842

  An object of the present invention is to provide an opening / closing mechanism for an outer lid of a recording / reproducing apparatus in which an outer lid is provided on the outside of a cassette mounting portion so that the outer lid can be opened / closed. It is an object of the present invention to provide a recording / reproducing apparatus capable of reducing the size of the direction.

  Another object of the present invention is to provide a recording / reproducing apparatus in which a locking mechanism is arranged in the front-rear direction without arranging a locking mechanism above or below the outer lid of the recording / reproducing apparatus.

  Still another object of the present invention is to provide an opening / closing mechanism for an outer lid of a recording / reproducing apparatus having a locking mechanism with excellent operability of the releasing operation.

  Yet another object of the present invention is to provide an opening / closing mechanism for an outer lid of a recording / reproducing apparatus that does not cause variations in locking timing and does not cause problems such as half-locking.

  The above and other problems of the present invention will be made clear by the technical idea and embodiments of the invention described below.

The main invention of the present application is an opening / closing mechanism for an outer lid of a recording / reproducing apparatus in which an outer lid is provided on the outer side of the cassette mounting portion so as to be freely opened and closed.
The outer lid is rotatably supported by an attachment frame, and has a lock mechanism that locks the front and rear of the outer lid in a state where the outer lid is closed,
The lock mechanism includes a swingable lock lever attached to an intermediate position in the front-rear direction on the inner side of the outer lid, and a lock portion composed of cuts on both sides of the lock lever is provided on the mounting frame side. An opening / closing mechanism of an outer lid of a recording / reproducing apparatus, wherein a locking operation is performed by engaging with a locked portion formed by a locking pin provided at the front and rear of the outer lid from opposite directions. Is.

  Here, the lock portion of the lock lever is constituted by a U-shaped cut, and one lock portion in the front-rear direction is engaged with the lock pin from above, and the other lock portion is engaged with the lock pin from below. May be combined. A grip belt may be attached to the outside of the outer lid, and a hand may be inserted into the grip belt to hold the housing. Further, an unlock button may be attached to the lock lever, and the unlock button may be disposed on the rear side of the outer lid so that it can be operated with a thumb when a hand is inserted into the grip belt. The recording / reproducing apparatus may be a video camera using a tape cassette on which a magnetic tape is wound as a recording medium. Further, the outer lid may be attached to the right side surface of the casing so as to be freely opened and closed when the optical system of the video camera is directed toward the subject.

  According to a preferred aspect of the present invention, in the video camera, a lock mechanism that operates when the outer lid that opens and closes when the tape cassette is put in and out is closed is disposed before and after the outer lid, and the lock mechanism is unlocked. The button is arranged at a position where the button can be operated with the thumb when the video camera is held behind the outer lid. With such a configuration, the size in the height direction of the product is particularly reduced by several millimeters to several tens of millimeters to reduce the size in the same direction and reduce the number of parts.

  According to the above-described aspect, it is not necessary to provide a lock mechanism on the top or bottom of the outer lid of the video camera. For this reason, the dimension of the video camera in the height direction is reduced. Further, by disposing the lock release button at a position where it can be operated with the thumb of the hand held outside the outer lid, it is not necessary to change the video camera when opening the outer lid, and the operability is improved. In addition, when the lock is made, a simple structure in which the shaft of the other party to be locked is moved over and locked is less likely to cause variations in the looseness at the time of locking. Furthermore, since the timing for locking is the timing when the part to be locked crosses the axis of the other party to be locked, there is no variation in the timing for locking, and troubles such as half locking and locking only on one side can be prevented. In addition, the number of parts can be reduced as compared with the conventional lock mechanism.

Primary aspect of the present invention is the opening and closing mechanism of the outer lid of the recording and reproducing apparatus that openably provided outer lid to the outside of the cassette housing portion, together with the outer lid is rotatably supported by a mounting frame, the A lock mechanism that locks the front and rear of the outer lid in a state in which the outer lid is closed, and the lock mechanism includes a swingable lock lever that is attached to an intermediate position in the front-rear direction inside the outer lid; Locking operation is achieved by engaging a lock portion composed of cuts on both sides of the lock lever on the mounting frame side and engaging with a locked portion composed of a lock pin located on the front and back of the outer lid in opposite directions. It is designed to be performed.

  Therefore, according to the opening / closing mechanism of the outer lid of such a recording / reproducing apparatus, when the outer lid is moved from the opened state to the closed state, the outer lid is locked by the locking mechanisms provided before and after the outer lid. become. Accordingly, there is no locking mechanism at the upper and lower portions of the outer lid, and for this reason, it is possible to reduce the size in the height direction and to reduce the size of the device in the same direction.

  The present invention will be described below with reference to embodiments shown in the drawings. The recording / reproducing apparatus according to the present embodiment relates to a digital video camera that digitally records a video signal. As shown in FIG. 1 and FIG. Is provided with an optical system 11 comprising an optical lens. An image taken in by the optical system 11 is converted into an electric signal by a CCD disposed inside. In addition, a viewfinder 12 is provided at a position opposite to the optical system in order to confirm the captured image. In addition, a liquid crystal display panel 13 is provided as another display means for confirming the captured video and reproducing the recorded video. The liquid crystal display panel 13 is attached to the side of the housing 10 so as to be freely opened and closed.

  A backlight button 14 and a recording start / stop button 15 are arranged on the front end side of the liquid crystal display panel 13 and on the side portion thereof. Further, a screen display button 16 is attached to the upper part of the mounting position of the liquid crystal display panel 13, and by operating this screen display button 16, an image captured by the liquid crystal display panel 13 or a reproduced image can be displayed. I am doing so. A battery pack 17 for power supply is detachably attached to the rear side of the housing 10 and below the finder 12.

  As shown in FIG. 2, a USB terminal 21, a DV terminal 22, an AV terminal 23, and a LANC terminal 24 are arranged on the side surface of the housing 10 opposite to the surface on which the liquid crystal display panel 13 is mounted. A terminal cover 25 is attached so as to be openable and closable so as to cover these four terminals 21 to 24. A reset button 26 is attached below the terminals 21-24.

  Further, a lens cover opening / closing switch 29 is provided on the front side of the side surface of the housing 10 where the four terminals 21 to 24 covered with the terminal cover 25 are provided. A microphone 30 is attached to the front side of the housing 10, a recording lamp 31 is provided, and a MIC terminal 32 for connecting the microphone is further provided.

  The lower part of the terminals 21 to 24 covered by the terminal cover 25 and a part of the outer part of the housing 10 is constituted by an outer lid 33, and the inside of the outer lid 33 is a cassette mounting part. ing. A semiconductor memory insertion slot 34 is provided on the side surface on the front end side of the outer lid 33. A grip belt 35 is attached to the outer side of the outer lid 33, and a hand can be inserted into the grip belt 35 to hold the casing 10 of the video camera (see FIG. 4).

  Further, as shown in FIG. 3, a photo switch 38 and a diopter adjustment knob 39 are provided on the outer side of the housing 10 and on the base side of the viewfinder 12. A battery pack removal button 40 is provided below the diopter adjustment knob 39. By operating this button 40, the battery pack 17 can be unlocked and removed. In addition, a charging lamp 41 is provided below the detach button 40 so as to display the charging of the battery pack 17. A recording start / stop button 42 is provided below the charging lamp 41, and the recording start / stop button 42 also controls recording.

  An accessory shoe 45 is attached to the upper portion of the housing 10 as shown in FIG. 3, and a zoom lever 46 for adjusting the image frame is attached to the side thereof. An edit lamp 47 is disposed obliquely below the zoom lever 46, and a power switch 48 is provided below the edit lamp 47. A speaker 49 is provided on the side of the power switch 48 so that the recorded audio signal can be reproduced.

  Next, the structure of the cassette mounting portion of this video camera will be described with reference to FIGS. As shown in FIG. 5, the outer lid 33 to which the grip belt 35 is attached is opened, the tape cassette 58 is inserted into the cassette holder 57, and then the cassette holder 57 is pulled inward and lowered. By closing the outer lid 33, the tape cassette 58 is mounted inside the video camera and inside the mechanical deck as shown in FIG.

  As shown in FIG. 7A, the cassette mounting portion includes a mechanical deck 52, and a rotary head drum 53 having a magnetic head is attached to the back of the mechanical deck 52. A slide chassis 54 is provided so as to be slidable in the left and right directions in FIG. 7 with respect to the mechanical chassis 52, and a cassette holder 57 is provided on the slide chassis 54 via a pair of elevating links 55, 56. It has been. The tape cassette 58 can be held by the cassette holder 57.

  In the tape cassette mounting operation by such a mechanical deck, as shown in FIG. 7A, the outer lid 33 is opened, the slide chassis 54 is moved to the right, and the cassette holder 57 is raised by the lift links 55 and 56. Then, the tape cassette 58 is inserted into the cassette holder 57 as indicated by an arrow.

  Thereafter, as shown in FIG. 7B, the cassette holder 57 is lowered onto the slide chassis 54 by the rotation of the elevating links 55 and 56. Then, the slide chassis 54 is moved to the left as shown in FIG. 7C, the cassette lid of the tape cassette 58 is opened, and the magnetic tape wound in the tape cassette is wound around the rotary head drum 54. I have to. Then, the tape cassette 58 is mounted by closing the outer lid 33 thereafter.

  The operation of taking out the tape cassette 58 may be performed in the reverse of the above operation. That is, the outer lid 33 is opened, and then the slide chassis 54 is pulled rightward from the state shown in FIG. 7C to the state shown in FIG. 7B, and then the cassette holder 57 is moved upward by the lift links 55 and 56 and moved upward. The tape cassette 58 is removed from the cassette holder 57 that has been used.

  Next, a lock mechanism of the outer lid 33 that covers the cassette mounting portion so as to be freely opened and closed will be described with reference to FIGS. An attachment frame 60 is provided in the housing 10 on the mechanical deck side so that the outer lid 33 is rotatably attached. The mounting frame 60 includes both side plates and a connecting portion. The frame 61 is rotatably supported by the mounting frame 60. The frame 61 includes arms 62 on both sides thereof, and the arms 62 are rotatably supported by fulcrum pins 63 that are respectively implanted on the left and right side plates of the mounting frame 60. In addition, a long hole 64 is formed in the arm 62, and the long hole 64 engages with a restriction pin 65 planted on the side plate of the mounting frame 60, whereby the rotation angle of the frame 61 is restricted.

  Next, a lock lever 66 is pivotally attached to the lower portion of the frame 61. That is, the lock lever 66 is swingably attached to the frame 61 by the fulcrum pin 67 at the left and right intermediate positions. In addition, the lock lever 66 is biased counterclockwise by the coil spring 68 about the fulcrum pin 67 in FIGS. 8A and 8B. The lock lever 66 is provided with a release button 69 on a projecting piece projecting sideways, and the release button 69 rotates the lock lever 66 clockwise around the fulcrum pin 67 against the coil spring 68. It can be done.

  The lock lever 66 is provided with U-shaped cuts 71 and 72 at left and right bent portions thereof, respectively, and these cuts 71 and 72 are respectively provided with lock pins 73 and 74 implanted on the mounting frame 60 side. It is designed to engage. Here, the U-shaped cut 71 is engaged with the lock pin 73 from above (see FIG. 8A). On the other hand, the U-shaped cutout 72 on the opposite side is engaged with the lock pin 74 from below (see FIG. 8B).

  As described above, the video camera according to the present embodiment includes the mounting frame 60 as shown in FIGS. 8A and 8B, and the pair of lock pins 73 and 74 are crimped on both sides so as to face each other by the mounting frame 60. Is fixed. A frame 61 made of a steel plate is provided, and a lock lever 66 is attached to a lower portion of the frame 61 around a fulcrum pin 67. The frame 61 can be rotated about the fulcrum pin 63 of the mounting frame 60, and the lock lever 66 can be rotated about the fulcrum pin 67. A release button 69 is provided at the tip of the protruding piece on the side of the lock lever 66, and the lock lever 66 is connected to the frame 61 by a tension coil spring 68. The lock lever 66 is normally in the state of 8A and 8B, and the cassette lid 33 is fixed to the outer portion of the frame 61.

  8A and 8B, the left and right U-shaped cuts 71 and 72 of the lock lever 66 are engaged with the left and right lock pins 73 and 74 of the mounting frame 60, respectively. The frame 61 cannot be rotated and cannot be opened as shown in FIG. When the release button 69 is moved downward in this state, the lock lever 66 rotates about the fulcrum pin 67 against the coil spring 68, and the state shown in FIGS. 8A and 9B is shown in FIGS. 9A and 9B. To change. That is, the engagement between the U-shaped cuts 71 and 72 of the lock lever 66 and the lock pins 73 and 74 is released from each other, whereby a lock release operation is performed.

  9A and 9B, the outer lid 33 is opened by rotating the frame 61 with respect to the mounting frame 60 about the fulcrum pin 63 to the back side (see FIGS. 5 and 6). ). This state is shown in FIG. When the frame 61 with the outer lid 33 attached to the outer side in this way is rotated in the reverse direction, that is, clockwise around the fulcrum pin 63 in FIG. 10, the U-shape of the lock lever 66 as shown in FIG. 11 are respectively in contact with the lock pins 73 and 74 of the mounting frame 60, so that the lock lever 66 resists the coil spring 68 and rotates clockwise in FIG. The lock pins 73 and 74 are relatively engaged with the U-shaped cuts 71 and 72, thereby returning to the locked state shown in FIGS. 8A and 8B.

  According to such a locking mechanism of the outer lid 33, since there is no locking mechanism on the lower side of the outer lid 33 and on the opposite side to the fulcrum pin 63 that constitutes the hinge, the casing of the video camera in particular is provided. The height dimension of 10 can be lowered. Further, since the unlock button 69 is positioned near the thumb of the hand inserted into the grip belt 35, it is not necessary to change the housing 10 when opening the outer lid 33, and the operability is improved. Further, when the outer lid 33 is closed and locked, the locking pins 73 and 74 on the other side to be locked are locked by the U-shaped cuts 71 and 72 of the lock lever 66 so as to be locked. This makes it difficult to vary. Further, since the locking timing of the outer lid 33 is the timing at which the U-shaped cuts 71 and 72 of the part 66 to be locked cross the locking pins 73 and 74, the locking timing is less likely to vary, and the half lock Or lock only on one side. In addition, such a structure uses a swingable lock lever 66, which leads to a reduction in the number of parts.

  Although the present invention has been described above with reference to the illustrated embodiments, the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the technical idea of the invention included in the present application. For example, the above embodiment relates to an opening / closing mechanism for an outer lid of a video camera. However, the present invention is not necessarily limited to a video camera, and can be widely applied to an opening / closing mechanism for a recording / reproducing apparatus having an outer lid. The specific configuration for locking can be arbitrarily changed according to the purpose, and is not limited to the specific structure shown in the embodiment.

  The present invention can be widely applied to recording / reproducing apparatuses such as video cameras.

It is an external appearance perspective view of the state which opened the liquid crystal display panel of the video camera. It is the external appearance perspective view seen from the outer surface side which has the outer cover of a video camera. It is an external appearance perspective view when the same side part as FIG. 2 is seen from the rear side. It is an external appearance perspective view which shows the state which inserted the hand between the grip belts and hold | maintained the housing | casing. It is an external appearance perspective view which shows the insertion operation of a tape cassette. It is an external appearance perspective view which shows the operation | movement which closes an outer cover. It is a principal part longitudinal cross-sectional view which shows the insertion operation | movement of the tape cassette with respect to a mechanical deck. It is a principal part perspective view which shows the locking mechanism of an outer cover. It is a principal part perspective view which shows lock release operation | movement. It is an external appearance perspective view which shows the operation | movement which opens a flame | frame. It is a principal part external appearance perspective view which shows the operation | movement just before a lock | rock.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Housing | casing, 11 ... Optical system, 12 ... Viewfinder, 13 ... Liquid crystal display panel, 14 ... Backlight button, 15 ... Recording start / stop button, 16 ... Screen display button, 17 ... Battery pack, 21 USB terminal, 22 DV terminal, 23 AV terminal, 24 LANC terminal, 25 LAN terminal, 26 Terminal cover, 26 Reset button, 29 Lens cover open / close switch, 30 ...... Microphone, 31 ... Recording lamp, 32 ... MIC terminal, 33 ... Outer cover, 34 ... Semiconductor memory insertion slot, 35 ... Grip belt, 38 ... Photo button, 39 ... Diopter adjustment knob, 40 Battery pack removal button, 41 Charge lamp, 42 Recording start / stop button, 45 Accessory shoe, 46 Zoom lever, 47 Edit run , 48 ... Power switch, 49 ... Speaker, 52 ... Mechanical chassis, 53 ... Head drum, 54 ... Slide chassis, 55, 56 ... Lifting link, 57 ... Cassette holder, 58 ... Tape cassette, 60 ... Mounting frame, 61 ... Frame, 62 ... Arm, 63 ... Support pin, 64 ... Long hole, 65 ... Restriction pin, 66 ... Lock lever, 67 ... Support pin, 68 ... Coil Spring, 69 ... Release button, 71 ... U-shaped cut (left), 72 ... U-shaped cut (right), 73 ... Lock pin (left), 74 ... Lock pin (right)

Claims (6)

In the opening / closing mechanism of the outer lid of the recording / reproducing apparatus in which an outer lid is provided on the outside of the cassette mounting portion so as to be freely opened and closed.
The outer lid is rotatably supported by an attachment frame, and has a lock mechanism that locks the front and rear of the outer lid in a state where the outer lid is closed,
The lock mechanism includes a swingable lock lever attached to an intermediate position in the front-rear direction on the inner side of the outer lid, and a lock portion composed of cuts on both sides of the lock lever is provided on the mounting frame side. An opening / closing mechanism for an outer lid of a recording / reproducing apparatus, wherein a locking operation is performed by engaging with a locked portion formed by a locking pin provided at the front and rear of the outer lid from opposite directions .   The lock portion of the lock lever is configured by a U-shaped cut, and one lock portion in the front-rear direction is engaged with the lock pin from above, and the other lock portion is engaged with the lock pin from below. The opening / closing mechanism of the outer lid of the recording / reproducing apparatus according to claim 1.   The opening / closing mechanism of the outer lid of the recording / reproducing apparatus according to claim 1, wherein a grip belt is attached to the outside of the outer lid, and a hand is inserted into the grip belt to hold the casing. .   The lock release button is attached to the lock lever, and the lock release button is disposed on the rear side of the outer lid so that it can be operated with a thumb when a hand is inserted into the grip belt. An opening / closing mechanism for the outer lid of the recording / reproducing apparatus according to claim 1.   2. The opening / closing mechanism of the outer lid of the recording / reproducing apparatus according to claim 1, wherein the recording / reproducing apparatus is a video camera using a tape cassette on which a magnetic tape is wound as a recording medium.   6. The opening / closing mechanism of the outer lid of the recording / reproducing apparatus according to claim 5, wherein the outer lid is attached to the right side surface of the casing so as to be freely opened and closed when the optical system of the video camera faces the subject.

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