JP3353723B2 - Door lock and electronic device with door lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock, and more particularly to a door lock capable of securely locking an openable door.

[0002]

2. Description of the Related Art A housing having an opening / closing door at an opening where the housing is required to be hermetically sealed is usually provided with a lock mechanism for locking the opening / closing door. As a lock mechanism of this type, for example, by rotating a lever provided outside the opening / closing door, an arm in the housing is rotated, and the arm is moved to a contact portion (convex portion) provided in the housing. Some doors lock the door.

FIGS. 13 to 15 show a housing 100 to which a conventional door lock mechanism is applied. FIG. 13 shows a perspective view of the housing 100. The housing body 112 is, for example, an outer box of an electronic device in which electronic circuits, electronic components, and the like are arranged, and has an opening 113 for accessing the inside of the housing body 112 as needed. Door 11
Reference numeral 8 denotes a lid provided with a lock portion 110, which is connected to the housing body 112 while being supported by two hinges 114. In addition, the opening and closing door 118 has two hinges 114.
Is configured to be rotatable around the rotation axis, and is closed as necessary to seal the inside of the housing body 112.

Next, the structure of the lock section 110 will be described with reference to FIG. FIG. 14A is a perspective view of the lock unit 110, and FIG. 14B is a side view of the lock unit 110. As shown in FIGS. 14A and 14B, the lock portion 1
Reference numeral 10 includes a lever 126, a lock plate 127, and a thin cylindrical shaft 130. Lever 126 and lock plate 1
Numerals 27 are fixed at both ends of the shaft 130 so as to form a key shape. Therefore, when the lever 126 is rotated about the shaft 130 as the rotation axis, the lock plate 127 is rotated.
Also perform a similar rotational movement.

Next, the locking operation of the door 118 will be described. When the door 118 is closed and locked, first, the hinge 114 is used as a rotation axis to open and close the door 11.
8 is rotated upward until its inner peripheral surface comes into contact with the housing body 112. FIG. 15A is a front view and a side view showing a state of the lock unit 110 when the inner peripheral surface of the opening / closing door 118 is in contact with the housing body 112.

[0006] As shown in FIG.
2, a thin plate-shaped fixing plate 12 for locking the lock plate 127 when the opening / closing door 118 is locked.
5 are provided. Before the door 118 is locked, the lever 126 and the lock plate 127 are located in the horizontal direction in FIG.
, The opening and closing door 118 can be opened. Then, the opening and closing door 118 is locked by rotating the lever 126 in the direction of the arrow X shown in FIG.

FIG. 15B is a front view and a side view showing a state where the opening / closing door 118 is locked. FIG.
As shown in FIG. 15B, when the lever 126 is rotated in the direction of the arrow X shown in FIG. 15A, the lock plate 127 is also rotated in the direction of the arrow X, and is provided above the inner surface of the housing body 112. Fixedly fixed to the fixed plate 125. As described above, when the opening / closing door 118 is locked, the lock plate 127 is locked to the fixing plate 125, so that opening of the opening / closing door 118 is prevented.

[0008]

However, when the opening / closing door 118 is locked by using the above-described lock portion 110, there are the following problems. That is, the opening / closing door 118
If the lever 126 is already rotated before closing the door, or if the lever 126 is rotated while closing the door 118, the lock is locked before the inner peripheral surface of the door 118 contacts the housing body. The lock plate 127 of the unit 110 is
2, the door 118 cannot contact the upper part of the outer surface and cannot be closed. Therefore, in the case 100 described above, it is necessary to close the opening / closing door 118 while holding down the lever 126 by hand so as not to rotate.

Further, in the case 100, the lock plate 12
The opening and closing door 118 is locked by locking the upper part 7 of the housing main body 112 by the frictional force between the housing 7 and the fixing plate 125. Therefore, the lock plate 127 and the fixed plate 1
If the lock 25 is worn or deformed and a sufficient frictional force does not act between the lock plate 127 and the fixing plate 125, the lock 110 rotates due to some impact, and the door 118 is opened when unnecessary. There was a problem of opening.

Further, the positional relationship between the lock plate 127 and the fixed plate 125 changes due to vibration, deformation, and the like, and the open / close door 11 is opened.
8 when the lock plate 127 is in the closed state,
When the lever 25 is positioned, the lock plate 127 and the fixed plate 125 collide while the lever 126 is being rotated.
There was a problem that 18 could not be locked. The present invention has been made in view of the above points, and a lock operation cannot be performed unless the opening and closing door completely closes an opening of the housing, and the opening and closing door can be securely locked. It is intended to provide a door lock.

[0011]

Means for Solving the Problems In order to solve the above problems, the present invention is characterized by taking the following means. According to the first aspect of the present invention, a housing body having an opening, a lid rotatably hinged to the housing body to open and close the opening, and the lid closing the opening. A lock mechanism for locking the lid in a state, wherein the lock mechanism comprises:
It is pressed in the closing direction of the lid and locked at the position where it slides in the closing direction.
An operating lever which is operated to rotate click position, one end of the operation
The housing is connected to a lever, and the other end thereof penetrates the lid.
A shaft inserted inside the main body, and inside the lid body
Swingably supported, the operation lever slides in the closing direction
Kakaritomei for locking the engagement portion of the housing body in conjunction with the that
A locking part that pivots to the
Is a rotating portion to which the operating lever is Ru is rotated locking position in which the locking portion is pressed in the closing direction Ru is engaged with the engagement portion engages a recess of the rotating part Regulates the rotation of the rotating part.
The rotating portion is pressed in the closing direction of the lid.
By the above, the concave portion is detached and the rotation stop is released to release the rotation restriction.
And a rotation part provided on the rotation part, and the rotation part
Sliding on the end of the detent part, pressing the lid in the closing direction
A cam portion, and the operation lever is moved in the direction of the lid.
By pressing, the cam portion rotates the locking portion,
Locked to the engaging portion of the housing body,
By rotating the lever to a predetermined position, the cam rotates.
Moving the lid into a locked state .

[0012] According to the second aspect of the present invention, there is provided an electronic apparatus.
Components are housed, and a housing body having an opening, before
The hinge is rotatably hinged to the housing body, and the opening is
A lid that opens and closes, with the lid closing the opening
An electronic device having a door lock for locking the lid is provided.
The door lock is pressed in the closing direction of the lid.
Is rotated to the lock position at the position where it slides in the closing direction.
Operating lever, one end of which is coupled to the operating lever,
An end penetrates through the lid and is inserted into the housing body.
Shaft, and swingably supported inside the lid,
The case is linked to the operation lever sliding in the closing direction.
Locking portion that rotates to a locking position for locking the engaging portion of the body main body
And the other end of the shaft, wherein the operating lever is
Pressed in the closing direction to lock the locking portion to the engaging portion.
A rotating unit for locking position twice movement that, in a recess of the rotating unit
Engages to regulate the rotation of the rotating part, and the rotating part
The depression is released by being pressed in the closing direction of the lid.
A rotation preventing portion for releasing the rotation restriction and, set in the rotator
And slides to the end of the rotation stopper with the rotation operation.
A cam portion for pressing in the closing direction of the lid Te, consists, before
By pressing the operating lever in the direction of the cover,
The locking portion is rotated by the locking portion, and the engagement of the housing body is performed.
Part, and further rotate the operation lever to a predetermined position.
By moving the cover , the cam rotates to lock the lid.

According to the first aspect of the present invention, the operating lever is provided.
Is pressed in the direction of the lid, the cam rotates the locking part.
And lock it to the front joint of the housing body.
By rotating to a predetermined position, the cam rotates and the lid
To lock the body, the rotating part cannot be rotated unless the rotating part is pressed in the direction of the lid after the opening of the housing body is completely closed. Rotation is prevented and the lid closes the opening.
The operation lever is locked while holding, and the lid is closed.
Can be locked. Further, by rotating the rotating portion to the predetermined position after pressing the rotating portion toward the lid, the locking portion and the engaging portion are kept locked, so that the lid can be securely locked. In addition, the rotation stopper is the power of the rotation part.
The lid slides on the housing body by sliding the
Locking operation and rotation of the operation lever to the locked position.
Dynamic operation can be performed smoothly.

According to the second aspect of the present invention, the electronic device
After completely closing the opening of the housing body that stores the component parts of the device , the rotating unit cannot be rotated unless the rotating unit is pressed in the direction of the lid. Rotation is prevented and the lid keeps the opening closed.
The operation lever is locked while holding the lid, and the lid is closed.
Can be locked. Further, by rotating the rotating portion to the predetermined position after pressing the rotating portion toward the lid, the locking portion and the engaging portion are kept locked, so that the lid can be securely locked. The rotation stopper is a cam of the rotation part.
The lid is locked to the housing body by sliding the part
Locking operation and rotation to rotate the operation lever to the lock position
Operation can be performed smoothly.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a configuration diagram of a video tape recorder 1 mounted on an aircraft to which a door lock according to the present invention is applied. As shown in FIG. 1, the video tape recorder 1 roughly includes a lock unit 10 and a housing body 1.
2, a hinge 14, an operation switch 16, an opening / closing door 18, and the like.

The housing body 12 serves as an outer box of the video tape recorder 1 in which electronic devices and the like are arranged.
It has an opening 13 for inserting and removing a video tape. The operation switch 16 is composed of various switches for turning on / off the power of the video tape recorder 1, playing and stopping video, adjusting the volume, and the like, and is attached to the outer surface of the housing body 12.

The video tape recorder 1 mounted on an aircraft is affected by impacts and vibrations during takeoff and landing of the aircraft and during flight, and changes in air pressure and temperature inside the aircraft. Therefore, the housing main body 12 of the video tape recorder 1 is formed of a metal plate or the like, which has high rigidity and is formed in a hermetically sealed structure, and controls internal electronic devices and the like from vibrations, shocks, changes in air pressure and temperature, and the like. It is designed to protect.

The housing body 12 contains, for example, aluminum, and the surface of the housing body 12 is plated with copper. Thus, the housing body 12 has an electromagnetic wave shielding function. Accordingly, transmission of electromagnetic waves that arrive from outside the video tape recorder 1 and adversely affect electronic devices inside the video tape recorder 1 and electromagnetic waves generated from internal electronic devices and adversely affect the outside of the video tape recorder 1 are not affected. Is prevented.

The opening / closing door 18 is provided for the video tape recorder 1.
Is a lid formed of the same material as that of the housing body 12 of FIG.
Therefore, the opening / closing door 18 has high rigidity and also has an electromagnetic wave shielding function. The opening / closing door 18 includes the lock portion 10 and is coupled to the housing body 12 in a form supported by two hinges 14 having the same shape. And the opening and closing door 18
Are capable of rotating motion using the two hinges 14 as pivot axes. When inserting a video tape into the video tape recorder 1 or taking out the video tape from the video tape recorder 1, the opening / closing door 18 is turned downward to be opened to expose the opening 13 of the housing body 12. A flexible pad 24 made of urethane sponge is provided on the outer edge of the opening / closing door 18 facing the housing body 12. The pad 24 is provided to absorb the shock caused by contact with the housing body 12 when the opening / closing door 18 is closed, and to increase the degree of sealing of the video tape recorder 1 by aligning with the housing body 12.

Next, the configuration of the lock unit 10 will be described. The lock unit 10 has a rotating unit 20 and a locking unit 22 as described later, locks the opening / closing door 18 by a rotating operation, and holds the closed state of the opening / closing door 18. FIG. 2 is a diagram illustrating a configuration of the rotation unit 20 of the lock unit 10. As shown in FIG. 2, the rotating unit 20 includes a lever 26, a spring 28, a shaft 30, a cam 32, and the like. Shaft 30
Has an elongated cylindrical shape. Also, the cam 32
Two thin disks having different diameters have shapes fixed to both ends of a short central axis. Further, the spring 28 is a coil-shaped metal elastic body whose inner diameter is slightly larger than the outer diameter of the shaft 30.

A lever 26 and a cam 32 are fixed to both ends of a shaft 30 passing through the opening / closing door 18 and the spring 28. In the video tape recorder 1, the lever 26
The spring 28 is provided outside the door 18, and the cam 32 is provided inside the door 18. The lever 26 and the cam 32 interlocked with the lever 26 can move toward the shaft 30 by a predetermined distance against the elastic force of the spring 28.

FIGS. 3A, 3B and 3C show the cam 32.
FIG. 3 is a diagram showing the configuration of FIG. 3A is a perspective view of the cam 32, FIG. 3B is a front view of the cam 32, and FIG.
(C) is a side view of the cam 32. As shown in FIG. 3A, the cam 32 includes a first disk 32a and a second disk 3a.
2b. The diameter of the first disk 32a is formed larger than the diameter of the second disk 32b by a predetermined value.
The first disk 32a and the second disk 32b are provided such that one disk surface faces each other via a central axis. The distance between the first disk 32a and the second disk 32b is
It is slightly larger than a shaft diameter of a pushing shaft 48 of the locking crank 44 described later.

At the outer edge of the first disk 32a, a recess 33 is provided.
And a V-groove 35 are provided. In addition, the second disk 32
As shown in FIG. 3B, which is a front view of the cam 32 as viewed from the side b, the recess 33 and the V-groove 35 are in a positional relationship of 90 ° with respect to the center of the first disk 32a. Recess 33
Is provided through the outer edge of the first disk 32a. The V-shaped groove 35 is provided at the outer edge of the first disk 32a opposite to the second disk 32b. On the surface of the first disk 32a on the second disk 32b side,
A step 34 is also provided. Further, as shown in FIG. 3C, the disk thickness of the first disk 32a gradually decreases from the V-groove 35 toward the recess 33.

Next, the structure of the locking portion 22 will be described with reference to FIGS. The locking portion 22 has a push table 36 and a locking crank 44. FIGS. 4A and 4B are a perspective view and a plan view, respectively, of the push table 36. FIG.
5A and 5B are a perspective view and a side view of the locking crank 44, respectively. As shown in FIGS. 4A and 4B, the push table 36 includes a rectangular plate 37, arm plates 38a,
8b, a rotation stopper 40, a crankshaft 42, and the like, and are installed at a predetermined position on the inner surface of the opening / closing door 18.

The rotation stopper 40 projecting in a cylindrical shape is disposed at the center of the thin rectangular plate 37, and is provided with arm plates 38a, 38b.
Are provided to extend vertically from both ends of the rectangular plate 37. A ball 41 that slides with the cam 32 when the lever 26 rotates is rotatably fitted into the tip of the rotation stopper 40. By providing the ball 41, the sliding friction between the cam 32 and the rotation stopper 40 during the rotation operation of the lever 26 is reduced. A screw (not shown) is screwed to the opposite side of the exposed portion of the ball 41. The end of the screw serves as a stopper against the movement of the ball 41 into the rotation stopper 40. Then, the amount of protrusion of the ball 41 is determined by adjusting the advance and retreat of the screw. The arm plates 38a and 38b are formed such that their distal ends sandwich an elongated cylindrical crankshaft 42 from both ends.

When the door 18 is locked, the rotation stopper 4
0 fits into the concave portion 33 of the cam 32, and the rotation stopper 40 and the cam 32 fit together, so that the cam 32, the shaft 30 to which the cam 32 is fixed, and the lever 26 cannot rotate. As shown in FIGS. 5A and 5B, the locking crank 44 includes locking plates 46a and 46b, a pushing shaft 48, and a shaft hole 50.
a, 50b and locking pawls 52a, 52b. The locking plates 46a and 46b extend vertically from both ends of the locking crank 44 in the same direction, and are provided so as to sandwich both ends of the long cylindrical pushing shaft 48. The shaft holes 50a and 50b and the locking pawls 52a and 52b are provided at predetermined positions of the locking plates 46a and 46b.

FIG. 6 is a view for explaining the connection between the pushing table 36 and the locking crank 44. As shown in FIG. 6, the locking crank 44 is attached so as to sandwich the push table 36,
Both ends of the crankshaft 42 pass through the shaft holes 50a and 50b of the locking crank 44. As the both ends of the crankshaft 42 pass through the shaft holes 50a and 50b, the locking crank 44 is supported by the crankshaft 42, and is rotated in the direction of arrow Y in FIG. Exercise is possible.

FIG. 7 is a view showing the connection of the cam 32, the rotation stopper 40 and the locking crank 44 when the opening / closing door 18 is locked. As shown in FIG. 7, the pushing shaft 48 is
2 is fitted in the gap between the first disk 32a and the second disk 32b, and the movement of the cam 32 in the direction of the shaft 30 in FIG. Therefore, when the cam 32 moves in the direction of the shaft 30, the locking crank 44 swings about the crankshaft 42.

Next, the locking operation of this embodiment will be described with reference to FIG.
This will be described with reference to FIG. The locking operation of the present embodiment
It consists of a locking operation and a turning operation. The locking operation is performed by the lever 26.
Is pressed toward the opening / closing door 18 until the locking crank 44 attached to the opening / closing door 18 is locked to the engaging portions 54a and 54b provided at predetermined positions in the housing body 12. In addition, the rotation operation is an operation until the door 26 is rotated around the shaft 30 to the predetermined position while the lever 26 is pressed toward the opening / closing door 18 after the locking operation, and the door lock is completed. First, the locking operation will be described.

FIGS. 8A and 8B are a perspective view and a side view, respectively, of the video tape recorder 1 with the opening / closing door 18 opened. As shown in FIG. 8A, the opening / closing door 18 is
In the open state, the hinge 14 is hung downward around the fulcrum,
The opening 13 of the housing body 12 is exposed to the outside. Also,
As shown in FIG. 8B, when the opening / closing door 18 is in the open state, the spring 28 moves the lever 26 by its elastic force.
The cam 32 integrated with the lever 30 via the shaft 30 is pressed against the inner surface of the door 18.

FIGS. 9A and 9B are a perspective view and a side view of the video tape recorder 1 with the opening / closing door 18 closed. As shown in FIG.
Is in close contact with the housing body 12 in the closed state,
The second opening 13 is covered by the opening / closing door 18. On the other hand, as shown in FIG.
The cam 32 integrated with the lever 26 via the shaft 30 remains pressed against the inner surface of the door 18 since the lever 26 keeps pressing the lever 26 away from the door 18 by its elastic force. Locking crank 44 at this time
The locking claws 52a, 52b provided on the housing body 12
It is not locked by the engaging portions 54a, 54b installed at predetermined positions inside. At this time, the concave portion 33 of the cam 32
Since the rotation stopper 40 provided on the pushing table 36 is fitted, the lever 26 integrated with the cam 32 cannot be rotated.

FIGS. 10A and 10B are a perspective view and a side view showing a state in which the lever 26 is pressed toward the opening / closing door 18 with the opening / closing door 18 closed. FIG.
As shown in (B), when the lever 26 is pressed toward the opening / closing door 18 with a force stronger than the restoring force of the spring 28, the spring 28 is compressed and the lever 26 approaches the opening / closing door 18 side.

On the other hand, the cam 32 integrated with the lever 26 via the shaft 30 by the distance the lever 26 approaches the opening / closing door 18 separates from the inner surface of the opening / closing door 18 and moves in the direction of the interior of the housing body 12. Extruded. Then, when the cam 32 is pushed in the inner direction of the housing body 12, the pushing shaft 48 fitted to the first disk 32 a and the second disk 32 b constituting the cam 32 also moves inside the housing body 12. Extruded in the direction. For this reason, the locking crank 44 having the pushing shaft 48 moves around the crankshaft 42 in FIG.
It rotates in the arrow Y direction in (B). When the locking crank 44 rotates, the locking claws 52 a and 52 b of the locking crank 44 are locked by the engaging portions 54 a and 54 b provided in the housing body 12. In addition, since the cam 32 is pushed inward in the housing main body 12, the fitting state between the concave portion 33 of the cam 32 and the rotation stopper 40 of the pushing table 36 shown in FIG. 6 is released. Rotating part 2 composed of lever 26, shaft 30, cam 32, etc.
0 is rotatable.

Next, the turning operation will be described. FIG. 11 (A)
(D) is a diagram for explaining the rotation operation. FIG.
1A shows a state in which no force is applied to the lever 26 from the outside, and FIG.
11C shows a state when the lever 26 is started to rotate in the arrow Z direction, and FIG. 11D shows a state when the locking operation is completed. Is shown.

As described above, when no force is applied to the lever 26 from the outside, as shown in FIG.
The rotation stopper 40 is fitted in the second recess 33. And
When the lever 26 is pressed toward the opening / closing door 18, FIG.
As shown in FIG.
The cam 32 which is integrated with the cam 32 moves in a direction away from the opening / closing door 18, and the fitted state between the concave portion 33 and the rotation stopper 40 is released. Therefore, the lever 26 becomes rotatable. At this time, as shown in FIGS. 10A and 10B, the locking pawls 52 a and 52 b of the locking crank 44 engage with the engaging portions 54 a and 54 b provided inside the housing body 12. I do.

As described above, since the lever 26 can be rotated after the opening / closing door 18 is locked, the lever 18 can be rotated when the door 18 is not securely aligned with the housing body 12. 26 rotates, and the opening / closing door 18
Is prevented from being closed.
Further, when the lever 26 is turned in the direction of arrow Z in FIG. 11C, the cam 32 also turns in the direction of arrow Z. At this time, the ball 41 provided at the tip of the rotation stopper 40 slides on the surface of the first disk 32 a constituting the cam 32.
Then, when the lever 26 rotates about 90 °, FIG.
As shown in (D), the ball 41 fits into the V groove 35 provided in the first disk 32a, and the locking of the opening / closing door 18 is completed.

Here, the disk thickness of the first disk 32a gradually increases from the concave portion 33 to the V groove 35. Therefore, with the rotation of the cam 32, the cam 32 and the pushing shaft 48 fitted in the gap between the first disk 32a and the second disk 32b are gradually separated from the opening / closing door 18, and Along with this, the locking pawls 52a, 52b of the locking crank 44 are gradually and strongly locked by the engaging portions 54a, 54b.

Accordingly, even if the positional relationship between the locking pawls 52a, 52b and the engaging portions 54a, 54b is slightly changed due to deformation of the components constituting the lock portion 10, vibration of the video tape recorder 1, etc. Is securely locked.
Further, since the ball 41 is provided at the tip of the rotation stopper 40, the rotation stopper 40 can smoothly slide on the first disk 32a with the rotation of the cam 32. Therefore, the lever 26 can be easily rotated when the door 18 is locked. Further, when the lock is completed, the ball 41 is fitted into the V groove 35, so that the locked state of the opening / closing door 18 is securely held.

In the video tape recorder 1 according to one embodiment of the present invention, the configuration of the cam 32 is not limited to the above. For example, a cam 132 described below may be applied instead of the cam 32. 12 (A), (B),
(C) is a diagram showing a configuration of the cam 132. FIG.
12A is a perspective view of the cam 132, FIG. 12B is a front view of the cam 132, and FIG. 12C is a side view of the cam 132.

As shown in FIG.
Has a first disk 132a and a second disk 132b. The first disk 132a and the second disk 132b have the same diameter, and are provided such that one disk surface faces each other via a central axis. First disk 132
a and the distance between the second disk 132b and the locking crank 44
Is slightly larger than the shaft diameter of the push shaft 48 of the above.

The outer periphery of the first disk 132a has a recess 1
33 and a groove 135 are provided. FIG. 12 is a front view of the cam 132 viewed from the second disk 132b side.
As shown in (B), the concave portion 133 and the groove 135 have a positional relationship of 90 ° with respect to the center of the first disk 132a. The recess 133 extends through the outer edge of the first disk 132a. Further, the groove 135 is provided in the first disk 132a.
, A predetermined length is provided from the outer edge toward the center on the surface opposite to the second disk 132b side.

As shown in FIG. 12C, the first disk 1
The disk thickness of 32a gradually decreases from the groove 135 toward the recess 133. In addition, as shown in FIG. 12B, in the first disk 132a, the surface between the concave portion 133 and the groove 135 is buffed. For this reason, the outer edge between the concave portion 133 and the groove 135 has a corner removed and is finished very smoothly.

As described above, since the second disk 132b has the same diameter as the first disk 132a, the pushing shaft 48 comes off from between the first disk 132a and the second disk 132b. Is prevented. Accordingly, when the lever 26 moves in the direction of the opening / closing door 18, the fitted state between the cam 132 and the push shaft 48 is always ensured, and the locking and unlocking of the opening / closing door 18 is reliably performed.

Further, since the groove 135 is provided at a predetermined length from the outer edge of the first disk 132a toward the center, the cam 132 and the rotation stopper 40 are slightly moved up and down when the door 18 is locked. Even if it is misaligned,
The ball 41 provided at the leading end of No. 0 is securely fitted into the groove 135. The length of the groove 135 is appropriately set according to the rigidity of the members constituting the lock unit 10 and the situation where the video tape recorder 1 is used.

Further, the disk thickness of the first disk 132a is
35, the surface between the recess 133 and the groove 135 is buffed, so that the tip of the rotation stopper 40 when the lever 26 rotates. Ball 41 provided in the first disk 1
32a can be slid smoothly. In the above embodiment, the housing body 12 and the opening / closing door 18 correspond to the housing body and the lid described in the claims, respectively, and the lock portion 10, the locking portion 22, and the rotating portion 20 are respectively described in the claims. The cams 32 and 132 correspond to the lock mechanism, the locking portion and the rotating portion described in the range, and the cam portions described in the claims.

[0046]

According to the invention as described above, the following various effects can be realized. According to the first aspect of the present invention, the operation lever is pressed in the direction of the lid, whereby
The rotation of the locking part causes the locking part to lock to the front joint of the housing body.
And turning the operation lever to a predetermined position.
In order to rotate the cam to lock the lid,
Since no inability to rotate the rotating portion when pressing the rotating portion in the lid direction after completely close the opening of the housing body, along with unwanted rotation of the rotation is prevented , Lid
The operation lever is locked while the opening is closed.
And the lid can be locked in the closed position.
Further, by rotating the rotating portion to the predetermined position after pressing the rotating portion toward the lid, the locking portion and the engaging portion are kept locked, so that the lid can be securely locked. Ma
In addition, when the rotation stop portion slides on the cam portion of the rotation portion,
Locking operation and operation lever to lock the lid to the housing body
To the lock position.
Can be.

According to the second aspect of the present invention, the electronic device
After completely closing the opening of the housing body that stores the component parts of the device , the rotating unit cannot be rotated unless the rotating unit is pressed in the direction of the lid. Rotation is prevented and the lid keeps the opening closed.
The operation lever is locked while holding the lid, and the lid is closed.
Can be locked. Further, by rotating the rotating portion to the predetermined position after pressing the rotating portion toward the lid, the locking portion and the engaging portion are kept locked, so that the lid can be securely locked. The rotation stopper is a cam of the rotation part.
The lid is locked to the housing body by sliding the part
Locking operation and rotation to rotate the operation lever to the lock position
Operation can be performed smoothly.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a video tape recorder according to one embodiment of the present invention.

FIG. 2 is a diagram illustrating a configuration of a rotating unit.

FIGS. 3A to 3C are diagrams showing a configuration of a cam.

FIGS. 4A and 4B are diagrams showing a configuration of a push table.

5 (A) and 5 (B) are diagrams showing a configuration of a locking crank.

FIG. 6 is a diagram showing a connection between a push table and a locking crank.

FIG. 7 is a diagram showing a connection between a cam, a rotation stop, and a locking crank.

8 (A) and 8 (B) are views showing a video tape recorder in which an opening / closing door is open.

FIGS. 9A and 9B are diagrams showing a video tape recorder in which an opening / closing door is in a closed state.

10 (A) and 10 (B) are views showing a video tape recorder in which an opening / closing door is locked.

11 (A) to 11 (D) are diagrams for explaining the operation of the cam.

12 (A) to 12 (C) are diagrams showing a configuration of a cam.

FIG. 13 is a perspective view showing a configuration of a housing of a conventional example.

14A and 14B are diagrams showing a configuration of a lock unit.

FIGS. 15A and 15B are diagrams for explaining the operation of the lock unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Video tape recorder 10, 110 Lock part 12, 112 Case main body 13, 113 Opening part 14, 114 Hinge 16 Operation switch 18, 118 Opening / closing door 20 Rotating part 22 Locking part 24 Pad 26, 126 Lever 28 Spring 30, 130 Shaft 32, 132 Cam 32a, 132a First disk 32b, 132b Second disk 33, 133 Recess 34 Step 35 V groove 36 Push table 38a, 38b Arm plate 40 Rotation stop 41 Ball 42 Crank shaft 44 Lock Crank 46a, 46b Locking plate 48 Pushing shaft 50a, 50b Shaft hole 52a, 52b Locking pawl 54a, 54b Engaging part 100 Housing 125 Fixing plate 127 Lock plate 135 Groove

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E05C 3/22 B65D 55/14

Claims (2)

(57) [Claims] A housing body having an opening; a hinge body rotatably connected to the housing body;
A lid for opening and closing, and locking the lid with the lid closing the opening.
A lock mechanism comprising:At the position where the lid is pressed in the closing direction and slides in the closing direction
An operation lever pivotally operated to the lock position, One end is connected to the operation lever, and the other end passes through the lid.
A shaft inserted through the housing body, The operation lever is swingably supported inside the lid,
Slides in the closing direction Engaging part of the housing body
ToLockRotate to locking positionA locking part,The operating lever is closed to the other end of the shaft.
Toward When pressed, the locking portion is locked to the engaging portion.Person in charge
To the stop positionRotating part,Engage with the concave part of the rotating part to restrict the rotation of the rotating part
And the rotating portion is pressed in the closing direction of the lid.
The rotation stopper which releases the concave portion and releases the rotation restriction
Department and The rotation stopping part is provided on the rotation part, and the rotation stopping part is provided together with the rotation operation.
Cam portion that slides on the end of the cam and presses the lid in the closing direction
When,  Consisting ofBy pressing the operation lever in the direction of the lid, the
A cam portion rotates the locking portion to cause the engagement of the housing body.
And the operation lever is further moved to a predetermined position.
By rotating, the cam rotates to lock the lid.
Lock state A door lock characterized in that: (2)The electronic components are stored in the opening
A housing body having The opening is hingedly connected to the housing main body so as to be free to rotate.
A lid to open and close, Locks the lid with the lid closing the opening
Electronic devices with door locks The door lock is At the position where the lid is pressed in the closing direction and slides in the closing direction
An operation lever pivotally operated to the lock position, One end is connected to the operation lever, and the other end passes through the lid.
A shaft inserted through the housing body, The operation lever is swingably supported inside the lid,
Engages with the housing body in conjunction with sliding of the housing body in the closing direction.
A locking portion that rotates to a locking position for locking the The operating lever is closed to the other end of the shaft.
Engaged in a direction to lock the locking portion to the engaging portion.
Turn to stop position A rotating part for moving,Engage with the concave part of the rotating part to restrict the rotation of the rotating part
And the rotating portion is pressed in the closing direction of the lid.
The rotation stopper which releases the concave portion and releases the rotation restriction
Department and The rotation stopping part is provided on the rotation part, and the rotation stopping part is provided together with the rotation operation.
Cam portion that slides on the end of the cam and presses the lid in the closing direction
When, Consisting of By pressing the operation lever in the direction of the lid, the
A cam portion rotates the locking portion to cause the engagement of the housing body.
And the operation lever is further moved to a predetermined position.
By rotating, the cam rotates to lock the lid.
An electronic device characterized by being in a locked state.