JPH0546299Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a door lock device used in audio equipment and the like.

[Prior Art] In audio equipment and the like, doors such as lids are latched to the main body of the equipment in a fully closed position by a locking device to prevent them from being opened inadvertently.

4 to 6 show the conventional structure of this type of locking device. In this lock device, a button 12 is attached to a door 10 via a compression coil spring 11, and a case 16 is attached to a main body 14 of the device. The button 12 is integrally provided with a lock pawl 18, which projects to the back side of the door 10 and is inserted into the case 16 when the door is closed. A hole 20 for engagement with the lock pawl 18 is formed in the case 16, and when the door 10 is closed, the lock pawl 18 is inserted into this hole 20 by the biasing force of the compression coil spring 11, and the door 10 is placed in the fully closed position and the device is closed. It is designed to be locked to the main body 14. When the door 10 is opened, a portion of the button 12 is pressed against the compression coil spring 11.
The lock pawl 18 is pulled out from the hole 20 by this operation, and the door 1 is pushed in against the urging force of the door 1.
0 can be opened. Further, a slider 24 is housed in the case 16 so as to be movable in the insertion direction of the lock pawl 18 via a compression coil spring 22. When the door is closed, the slider 24 is pressed by the lock pawl 18 and is moved against the biasing force of the compression coil spring 22, so that the lock pawl 18 locks into the hole 20.
When the door inserted into the case 16 is closed, the lock claw 18 is urged in the direction opposite to the insertion direction into the case 16, and the door 10 is closed.
When the door 1 is opened, the lock pawl 18 is pulled out from the hole 20, and at the same time the door 1 is pulled out by the biasing force of the compression coil spring 22.
0 is set to be open.

However, with this locking device, the button 12 and the case 16 are individually attached to the door 10,
It must be attached to the device body 14, and the door 10
Not only are mounting holes required in each of the main body 14 of the device, but also the assembly is complicated. Furthermore, the case 16 can be attached to the device main body 14 with the compression coil spring 22 and slider 24 assembled in advance, but the compression coil spring 11 is attached to the door 10 at the same time as the button 12 is attached, and the compression coil spring 11 is attached to the door 10 at the same time as the button 12 is attached. It is necessary to assemble at least three parts, the button 12, the case 16, and the compression coil spring 11, which requires a large number of assembly steps. Furthermore, button 1
Since button 2 and lock pawl 18 are integrated, button 1
2. The degree of freedom in design is low.

There is another type of locking device of this type that is attached only to the main body of the device and locks the door (Utility Model Application No. 83284/1984). However, in this case, the assembly order may be restricted due to the arrangement of many other parts attached to the device, or if the device is heavy, it may not be possible to move the device. Therefore, there are problems such as poor assembly workability.

[Problems to be solved by the invention] Taking the above facts into consideration, the present invention aims to provide a door lock device that can be easily assembled with a small number of man-hours and has a high degree of freedom in the design of operating members such as buttons. It is a purpose.

[Means for Solving the Problems] The present invention is a door locking device that locks the door to the door support member in the fully closed position, and includes a base that is attached to the door, and a base that is pivotably supported on the base. a lock arm that is locked to the door support member when the door is in the fully closed position;
It is attached to the base while holding the biasing means between it and the lock arm, and when the door is closed, it is pressed by the door support member and moves against the biasing force of the biasing means, and when the door is in the fully closed position, the biasing means is activated. A movable member that uses force to hold the lock arm in a locking position to the door support member and at the same time applies an opening force to the door, and a movable member that is swingably attached to the door to control the locked state of the lock arm to the door support member. The configuration includes an operating member for releasing the button.

[Function] In the present invention having the above configuration, when the door is closed, the movable member is pressed by the door support member and moves against the urging force of the urging means, and when the door is in the fully closed position, the lock arm is moved by the urging force of the urging means. While holding the door in a locking position to the door support member, an opening force is applied to the door, and in this state, the door is locked to the door support member.

When opening the door, the lock arm is swung by the operating member to release the locked state of the lock arm from the door support member, so that the door can be opened and is immediately opened by the urging force of the urging means.

[Embodiment] FIGS. 1 to 3 show a locking device 30 to which the present invention is applied.

The lock device 30 is a door 32 shown in FIG.
It is said to be used for locking. In this embodiment, the opening/closing door 32 is designed to be used as a cover for an adjustment knob of a VTR or the like. The opening/closing door 32 has a lower plate portion 32A shown in FIG. 2 rotatably supported on the main body 34 of the device via a hinge 36, and is opened and closed by being rotated around the hinge 36. This opening/closing door 3
2, as shown in FIG. 3, a rectangular hole 38 is provided in a plate portion 32B that is substantially perpendicular to the hinge mounting plate portion 32A.
A substantially rectangular notch 40 is formed in the plate portion 32C that is substantially parallel to the hinge mounting plate portion 32A, and a locking device 30 is attached to the rectangular hole 38 and the notch 40 to lock the opening/closing door 32 to the device main body 34 in the fully closed position. It's starting to stop. As shown in FIG. 3, the notch 40 is widened at its bottom (portion closer to the plate portion 32B), and has a protruding piece 40B protruding from the inner wall of the wide portion 40A. Also, notch 4
Guide grooves 4 are provided on the sides of the 0, facing each other in the middle part.
0C is formed.

On the other hand, a hole 42 is formed in the device body 34 in correspondence with the locking device 30, and a claw 44 protrudes from the periphery of the hole 42 on the side where the opening/closing door 32 is attached. The lock device 30 is locked in the fully closed position of the door 32, and the opening/closing door 32 is locked in the main body 3 of the device.
4. The tip of the claw 44 protrudes inside the hole 42, and a slope 44A and a flat surface 44B continuous with the slope 44A are formed on the surface corresponding to the mounting side of the opening/closing door 32.

As shown in FIG. 2, this locking device 30 is provided with a housing 46 as a base and a button 48 as an operating member.

As shown in FIG. 3, the housing 46 is bent into a substantially U-shape to form a pair of parallel plate portions 50 and a connecting plate portion 52 connecting these parallel plate portions 50. The opening/closing door 3 is inserted into the notch 40 from the lower part of Figure 3) as shown in Figure 2.
It is attached to 2. The parallel plate portion 50 has a notch 4
A locking piece 53 is provided along the direction of insertion into the notch 40 so that it is inserted into the guide groove 40C when inserted into the notch 40, and is guided by the guide groove 40C and smoothly inserted into the notch 40. It's becoming like that. The locking piece 53 penetrates the plate portion 32C by being inserted into the guide groove 40C and acts as a retainer. The parallel plate portion 50 has bearing holes 54 facing each other near the tip, and guide plates 56 facing each other and substantially parallel to the connecting plate portion 52 in the middle portion. The connecting plate portion 52 is connected to the notch 4 of the opening/closing door 32.
The wide part 40 of the notch 40 has a planar shape corresponding to 0.
A wide portion 52A is formed at one end corresponding to A,
When the parallel plate part 50 is inserted into the notch 40, the wide part 52A comes into contact with the protrusion 40B, thereby preventing further insertion of the parallel plate part 50. This connecting plate portion 52
A rectangular hole 59 is formed approximately in the center.

A lock arm 58 and a slider 60, which is a moving member, are attached to the housing 46.

The lock arm 58 is L-shaped as shown in FIG. 3, and has a pivot pin 62 protruding near the bent portion, which can be inserted into the bearing hole 54 and swing into the housing 46 around the pin 62. The end portion of one side projects from the inside of the opening/closing door 32 at a substantially right angle and is inserted into the hole 42 when the opening/closing door 32 is closed. A claw 64 is provided at the tip of one side end that is inserted into the hole 42 when the opening/closing door 32 is closed.
is formed, and when the opening/closing door 32 is closed, the device body 34
It is inserted into the hole 42 and can be engaged with the claw 44 of the device main body 34. On the other hand, the end of the other side opposite to the claw 64 corresponds to the rectangular hole 38 of the opening/closing door 32, and an arcuate protrusion 66 protruding toward the inside of the rectangular hole 38 is formed near the end. At the same time, a spring mounting pin 68 is formed on the opposite side.

This lock arm 58 is attached to the housing 46 in advance before the housing 46 is attached to the opening/closing door 32, and is assembled as shown in FIG. 2 by attaching the housing 46 to the opening/closing door 32.

The slider 60 is arranged closer to the device main body 34 than the end of one side of the lock arm 58 opposite to the claw 64. The slider 60 is inserted between the guide plate 56 and the connecting plate part 52 and is movably attached to the housing 46 while being guided by the guide plate 56.
B and is pressed by the flat surface 44B and guided by the guide plate 56 toward the inside of the opening/closing door 32. The slider 60 has a protruding pawl 70 corresponding to the connecting plate 52 of the housing 46, and a retaining plate 7 that faces the end of one side opposite to the pawl 64 of the lock arm 58.
2 is formed. The claw 70 is inserted into the rectangular hole 59 of the housing 46 to prevent the slider 60 from falling out of the housing 46. A lock arm 58 is attached to the holding plate portion 72.
Spring mounting pin 74 corresponds to spring mounting pin 68 of
is formed protrudingly.

The slider 60 is attached to the housing 46 while holding a compression coil spring 76 as a biasing means between it and the lock arm 58. More specifically, a compression coil spring 76 is held between the slider 60 and the lock arm 58 via spring mounting pins 68 and 74. The compression coil spring 76 biases the end of the lock arm 58 on the side opposite to the claw 64 and the slider 60 in a direction to separate them from each other. With this biasing force, lock arm 5
8 is held in a position where the claw 64 is locked to the claw 44, and when the opening/closing door 32 is closed, the claw 64 engages the slope 44 of the claw 44.
A, the claw 64 is temporarily swung against the biasing force of the compression coil spring 76, and the claw 64 is inserted into the hole 42.
At the same time, the claw 64 is latched to the claw 44 by being biased by the compression coil spring 76. Further, the slider 60 is held in a state in which the claw 70 is in contact with the edge of the mounting hole 59 on the device body 34 side, and in this state, when the opening/closing door 32 is closed, the flat surface 44B of the claw 44 is held.
The opening/closing door 32 is moved inside the opening/closing door 32 against the biasing force of the compression coil spring 76. As a result, when the door 32 is in the fully closed position, the slider 60 is moved to the inside of the door 32 and the biasing force of the compression coil spring 76 forces the lock arm 58 into the claw 4.
4 is firmly held in the locking position, and at the same time, an opening force is applied to the opening/closing door 32.

Like the lock arm 58, this slider 60 is also attached to the housing 46 in advance before the housing 46 is attached to the opening/closing door 32, and is assembled as shown in FIG. 2 by attaching the housing 46 to the opening/closing door 32. There is. That is, the housing 46 can be attached to the opening/closing door 46 with the lock arm 58, slider 60, and compression coil spring 76 attached.

As shown in FIG. 3, the button 48 has a rectangular plate shape, and thin protrusions 78 are formed at two locations around the periphery. The smaller side is the operation part 4
8A, the larger area side is the actuating portion 48B. The button 48 has an operating part 48A inserted into the rectangular hole 38 of the door 32 from the back side of the door 32 and exposed to the front side of the door 32, and a projecting piece 78 on the back side of the door 32 is inserted into the rectangular hole 38 of the door 32. It is attached to the opening/closing door 32 so that it will not come into contact with the opening/closing door 32 and fall off to the front side of the opening/closing door 32. This button 48 has a part of the parallel plate part 50 of the housing 46 and a lock arm 58 attached to the operating part 48B on the back side of the opening/closing door 32.
It is attached to the opening/closing door 32 so that it will not fall off to the back side of the opening/closing door 32.

This button 48 is pressed from the front side of the opening/closing door 32, and by this operation, it is swung around the contact portion with the parallel plate portion 50 of the housing 46 and resists the biasing force of the compression coil spring 76. Thus, the lock arm 58 can be swung in a direction opposite to the direction in which the pawl 64 engages with the pawl 44.

Next, a procedure for assembling the locking device 30 according to the present invention will be explained.

First, the button 48 is installed on the opening/closing door 32. The button 48 is operated by inserting the operation part 48A into the rectangular hole 38 of the opening/closing door 32 from the back side of the opening/closing door 32.
In this state, the protruding piece 78 is installed in the rectangular hole 38.
The opening/closing door 32 is prevented from coming into contact with the periphery of the opening/closing door 32 and falling to the front side of the opening/closing door 32.

Next, lock arm 58, slider 6
0. Attach the housing 46 to the opening/closing door 32 with the compression coil spring 76 attached. The lock arm 58 is attached to the housing 46 by inserting a pin 62 into the bearing hole 54 so as to be able to swing around the pin 62. The slider 60 is inserted between the guide plate 56 and the connecting plate portion 52 and is attached to the housing 46 so as to be movable along the guide plate 56. The compression coil spring 76 has spring mounting pins 68, 7 at both ends.
4 is inserted, the lock arm 58 and the slider 60
It is attached to the housing 46 while being held in place.

In this way, the lock arm 58 and the slider 6
0, the housing 46 to which the compression coil spring 76 is attached is inserted into the notch 40 from the tip of the parallel plate portion 50 and attached to the opening/closing door 32. When the parallel plate part 50 is inserted into the notch 40, the locking piece 53 is inserted into the guide groove 40C, and the parallel plate part 50 is smoothly inserted into the notch 40 while being guided by the guide groove 40C. Due to this insertion, the locking piece 53 penetrates the plate part 32C and is prevented from coming off, and the wide part 52A comes into contact with the protruding piece 40B, so that the parallel plate part 50
The housing 46 is thereby attached to the opening/closing door 32.

When the housing 46 is attached to the opening/closing door 32, the operating part 48 of the button 48 is located on the back side of the opening/closing door 32.
The circular arc protrusion 66 of the lock arm 58 corresponds to B to prevent the button 48 from falling off to the back side of the opening/closing door 32.

This allows the locking device 30 to be assembled as shown in FIG.

In this way, in this embodiment, the lock arm 58, slider 60, and compression coil spring 76 are attached in advance to the housing 46 and the button 48, which can be assembled by simply attaching the two parts to the opening/closing door 32, reducing the number of assembly steps and making the assembly easier. It's easy. In addition, since each component is attached to the opening/closing door 32, the assembly order is restricted due to the arrangement with many other components that are attached to the device body 34 as in the past, and if the device body 34 is a heavy object. Assembling is easy without causing poor assembly workability in some cases.

Further, the button 48 is independently attached to the opening/closing door 32, and its shape can be changed freely, providing a high degree of freedom in design.

Lock device 30 assembled in this way
When the opening/closing door 32 is closed from the open position shown in FIG. The lock arm 5 is pressed by the slope 44A of the claw 44.
8 is temporarily swung against the biasing force of the compression coil spring 76 and inserted into the hole 42 of the device main body 34, and is engaged with the pawl 44 by the biasing force of the compression coil spring 76 when the opening/closing door 32 is in the fully closed position. be stopped. The slider 60 has a claw 44
The compression coil spring 76 is pressed against the flat surface 44B of
is moved inside the opening/closing door 32 against the urging force of
When the door 32 is in the fully closed position, the biasing force of the compression coil spring 76 firmly holds the lock arm 58 in the locking position of the claw 64 with the claw 44, and at the same time, the door 32
A opening force is applied to the button 48, and a predetermined operating force is applied to the button 48.

As a result, the opening/closing door 32 is locked to the device body 34 in the fully closed position as shown in FIG.

To open the door 32 from this state, press the operating portion 48A of the button 48 from the front side of the door 32 and push it in. With this operation, the lock arm 58 swings around the pin 62 and the claw 48 of the claw 64 locks. The locked state of the opening/closing door 32 is released and the opening/closing door 32 can be opened, and is immediately opened by the biasing force of the compression coil spring 76. In this case, the compression coil spring 76 is compressed by pressing the button 48, and the opening/closing door 32 is compressed.
To effectively open an opening/closing door 32 by increasing the opening force of the opening/closing door 32.

In this embodiment, as described above, the opening force of the single compression coil spring 76 is applied to the opening/closing door 32, and the lock arm 58 is attached to the claw 44 of the claw 64.
Since the compression coil spring 76 is held in the locked position and a predetermined operating force is applied to the button 48, the compression coil spring 76 can be used for multiple purposes and the number of parts is reduced.

Further, the middle part of the lock arm 58 is pivoted, and the end of one side of the lock arm 58 is pressed by pressing the button 48 to release the end of the other side (claw 64) from the device main body 34. Therefore, by changing the ratio of the length of one side of the lock arm 58 to the length of the other side, the amount of push of the button 48 required to release the locked state of the lock arm 58 from the main body 34 of the device can be freely adjusted. This allows the lock arm 58 to be released from the device main body 34 with a small push amount.

[Effects of the invention] As explained above, the present invention is a door locking device that locks the door to the door support member in the fully closed position.
The base is attached to the door, the lock arm is pivotably supported on the base and is locked to the door support member when the door is in the fully closed position, and the base is attached with a biasing means held between the lock arm and the base. When the door is closed, the lock arm is pressed by the door support member and moved against the urging force of the urging means, and when the door is in the fully closed position, the lock arm is held in the locking position with the door support member by the urging force of the urging means. At the same time, it is equipped with a moving member that applies an opening force to the door, and an operating member that is attached to the door so that the lock arm can swing and releases the locked state of the lock arm from the door support member, so it can be assembled with less man-hours. Moreover, it has an excellent effect of allowing a high degree of freedom in the design of the operating member.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the door locking device according to the present invention, FIG. 1 is a sectional view showing the door in the closed state, and FIG. 2 shows the door in the open state corresponding to FIG. 1. 3 is an exploded perspective view, FIGS. 4 to 6 show the structure of a conventional door lock device, and FIG.
5 is a sectional view showing the door in the closed state, FIG. 5 is a sectional view showing the door in the open state corresponding to FIG. 4, and FIG. 6 is an exploded perspective view. 30...Lock device, 32...Opening/closing door, 34...
... Device body, 46 ... Housing, 48 ... Button, 58 ... Lock arm, 60 ... Slider,
76...Compression coil spring.

Claims (1)

[Scope of utility model registration request] A door lock device that locks the door to a door support member in a fully closed position, the base being attached to the door;
A lock arm is pivotably supported on the base and is locked to the door support member when the door is in the fully closed position, and a door support member is attached to the base while holding a biasing means between the lock arm and the door when the door is closed. When the door is in the fully closed position, the lock arm is held in the locked position to the door support member by the urging force of the urging means, and at the same time an opening force is applied to the door. What is claimed is: 1. A door lock device comprising: a moving member that swings the lock arm to the door; and an operating member that releases the locked state of the lock arm from the door support member.