JP2523336Y2 - Door locking device - 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 locking device, and more particularly, to an operation knob projecting from a front surface of a door when a locked state is released.

[0002]

2. Description of the Related Art Conventionally, as a locking device, for example, a magnet is provided between the back of a door and a housing, and the door is locked at a closed position by using the attraction force of the magnet. In addition, a handle protruding from the front surface is separately provided on the front surface of the door, and the door is easily opened with the handle.

[0003]

However, the lock device using the above-mentioned conventional magnet has a problem that the door is easily opened by vibration such as an earthquake. In particular, it is unsuitable for doors at relatively high positions, such as hanging cabinets and furniture in kitchens, because it is dangerous if the contents falling from the open door hits a person's head or the like.

Further, the conventional handle described above has a problem in that it protrudes from the front surface of the door, and is obstructive, and the overall sense of unity and unity of the design is easily impaired. In particular, since the inside of the kitchen is small, if the handle protrudes at a relatively low position such as a kitchen unit or a cupboard, the passage will be hindered and obstructed. Therefore, the present invention has been made in view of the above-mentioned problems of the conventional technology,
It is an object of the present invention to provide a lock device in which the lock is secure and hard to be disengaged, and when the door is locked, the front surface of the door can be kept flat.

[0005]

SUMMARY OF THE INVENTION The present invention is to achieve the above-mentioned object, and its contents will be described below using embodiments shown in the drawings. The present invention provides a housing
A lock pin (40) fixed in the (20), a door (30) is engaged with the lock pin to lock the door (30) in the closed position, and an apparatus main body (50) provided on the door, The device main body is
Mounting frame fixed in the through hole (31) that passes through the front and back of the door
(60), and has a lock groove (71) fitted on the mounting frame and having the lock pin fitted in one end, and receiving the lock pin in the lock groove when the door closes, A hook member (70) that is pushed by the lock pin and rotated in the lock direction while biting deeply into the lock groove,
First urging means (for example, first urging means) for rotating this hook member in the unlocking direction opposite to the locking direction.
The torsion spring 80) receives the rotational force of the first urging means, locks the hook member at a standby position where the lock pin can be disengaged from the lock groove, and a stopper (61) provided on the mounting frame. ), And has an insertion groove (91) into which a finger can be inserted when the mounting frame is protruded from the front surface of the door and can protrude from the front surface of the door, in the locking direction of the hook member. An operation knob (90) that is rotated from a projecting position projecting from the front of the door with the rotation of the door toward a non-projecting position in which the through hole of the door is substantially flush with the front of the door, and A second urging means (for example, a second torsion spring 100) for rotating the hook member from the non-projecting position to the projecting position, wherein the hook member and the operation knob are engaged with each other at the locking position of the hook member. And receives both urging forces of the first urging means and the second urging means. Rutotomoni, when the operation knob is pushed into the mounting frame from the non-projecting position, characterized in that the cam surface engagement state is released (75) is formed.

[0006]

[Operation] Therefore, according to the present invention, first, the operating knob (90) may be pushed in to release the locked state of the apparatus main body (50). When the operation knob is pushed in, the engagement between the hook member and the operation knob is released by the action of the cam surface (75) formed between the operation knob and the hook member (70),
The rotation of the hook member and the operation knob becomes possible.

For this reason, first, the hook member is rotated in the unlocking direction about its axis (for example, the protruding shaft 65) by the urging force of the first urging means (for example, the first torsion spring 80). With this rotation, the lock pin (40) fixed to the housing gradually comes off from the lock groove (71) of the hook member, and at that time, the lock groove is relatively pressed by the lock pin, and thereby, The door (30) is slightly pushed open.

When the hook member rotates to a standby position where it contacts a stopper (61) provided on the mounting frame (60),
The lock pin can be disengaged from the lock groove. or,
At the same time, the operating knob rotates in the projecting direction about its axis (for example, the protruding shaft 66) by the urging force of the second urging means (for example, the second torsion spring 100), and protrudes from the front surface of the door.

Therefore, by inserting a finger into the insertion groove (91) of the operation knob protruding from the front surface of the door, and pulling the door forward,
The door is opened and the opening of the housing is opened. When the door is opened, the lock pin is disengaged from the lock groove of the hook member. On the other hand, when closing the door, the door may be pushed toward the housing, and when the door is pushed in, the lock pin fits into the lock groove at the standby position of the hook member.
Further, when the door is pushed in, the lock groove of the hook member is pushed by the lock pin, and the lock pin is locked while rotating in the lock direction around its axis against the urging force of the first urging means. Proceed through the groove.

At the same time, with the rotation of the hook member,
The operation knob is rotated in a non-projecting direction about its axis against the urging force of the second urging means. Then, at the lock position of the hook member, the lock pin is deeply bitten into the lock groove and does not come off from the lock groove. At the same time, the urging forces of the first urging means and the second urging means are received by the action of the cam surface formed between the hook member and the operation knob. For this reason, the hook member stops at the lock position against the urging force of the first urging means, and the operation knob also stops at the non-projecting position against the urging force of the second urging means. Is done.

Therefore, the door is locked in the closed position, and the front surface can be kept flat.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention. FIG. 1 is a longitudinal sectional view of a main part of a lock device, FIG. 2 is a perspective view of a main part showing an unlocked state of the lock device, and FIG. 4 is a cross-sectional view taken along line VI-VI of FIG. 3 while FIG. 4 corresponds to FIG. 1 and FIG. 5 is a cross-sectional view taken along line VV of FIG. 6 is a longitudinal sectional view of a main part of FIG. 3, and FIG. 7 is a longitudinal sectional view of a main part showing an unlocking operation of the lock device, corresponding to FIG.

In the figure, reference numeral 10 denotes a lock device, which is a kitchen unit, a kitchen cabinet such as a hanging cabinet or a cupboard mounted above the kitchen unit,
Furthermore, it is used for front doors of general storage furniture such as bookcases and closets. In FIGS. 2 and 3, reference numeral 20 denotes a housing having an opening 21 on the front surface, and reference numeral 30 denotes a door which has one side edge pivotally mounted on the housing 20 and opens and closes the opening 21.

As shown in FIGS. 2 and 3, the lock device 10 includes a lock pin 40 fixed to an inner wall surface of the housing 20 located on a free end side of the door 30;
Engage with the door 40 to lock the door 30 in the closed position.
And a device main body 50 provided at a free end of 30 and fixed in a substantially rectangular through hole 31 penetrating the front and back surfaces thereof.

As shown in FIGS. 2 and 3, the lock pin 40 has a shaft section 41 having a circular cross section protruding from the inner wall surface of the housing 20 in a substantially U-shape. And the like. Although not shown, the lock pin 40 is fixed to the inner wall surface of the housing 20 using a screw or the like. The device body
As shown in FIGS. 1 to 6, as shown in FIGS. 1 to 6, when roughly classified, a mounting frame 60 fixed in the through hole 31 of the door 30, a shaft fixed to the mounting frame 60, and the lock pin 40 Shaft part of
41 has a lock groove 71 into which the shaft part 41 is received in the lock groove 71 when the door 30 closes,
While biting 41 deep into lock groove 71, shaft part 41
And a first urging means for rotating the hook member 70 clockwise in FIG. 1 in a lock release direction opposite to the lock direction. The first torsion spring 80 and the spring restoring force of the first torsion spring 80 that attempt to untwist are received, and the hook member 70 is moved from the lock groove 71 to the shaft portion 41.
Is locked at a standby position (see FIG. 1) where the mounting frame 60 can be disengaged.
The door 30 is fixed so that it can protrude from the front of the door 30,
Insertion groove for inserting fingers when protruding from the front of 30
As the hook member 70 is rotated in the locking direction, the through hole 31 of the door 30 is substantially flush with the front surface of the door 30 from the projecting position (see FIG. 1) projecting from the front surface of the door 30 with the rotation of the hook member 70 in the locking direction. An operation knob 90 that is rotated toward a closed non-projection position (see FIGS. 3 to 5), and a second knob that rotates the operation knob 90 counterclockwise in FIG. 1 from the non-projection position to the projection position. A second torsion spring 100 as a biasing means.

The mounting frame 60 is, as shown in FIGS.
A hollow frame main body 62 having an open front and rear surface along the inner edge of the through hole 31 of the door 30, and a back cover almost covering the back surface of the frame main body 62
The frame main body 62 and the back cover 63 are individually formed of a resin having appropriate rigidity, such as nylon, for example. As shown in FIGS. 2 to 6, the frame body 62 has a protruding edge portion 64 that protrudes in a flange shape from a front edge portion thereof and surrounds the periphery of the through hole 31 of the door 30 in a rectangular shape. A first protruding shaft 65 having a circular cross section for rotatably fixing the hook member 70 to the hook member 70, and being located above the first protruding shaft 65 and near the rear, and protruding laterally into the frame. , The plate-shaped stopper 61 for locking the hook member 70 at the standby position.
And above the stopper 61 and toward the front, protruding laterally into the frame, and
And a second protruding shaft 66 having an oval cross section for rotatably fixing the shaft.

As shown in FIGS. 2 to 5, the back cover 63 projects from the front edge of the back cover 63 in a flange shape.
An opposite edge 67 facing the back side of the door 30 with the protruding edge 64 of the door 30 interposed therebetween, and a slit 68 that receives the shaft 41 of the lock pin 40 and penetrates the front and back surfaces. The back cover 63 has the facing edge 67 facing the protruding edge 64 of the frame main body 62 with the front and back surfaces of the door 30 interposed therebetween, and the frame main body 62 and the back cover 63 are screwed, although not shown. The door 30 is clamped from the front and back surfaces within the space between the protruding edge portion 64 and the opposing edge portion 67 by being fixed in series by the method described above.

As shown in FIGS. 4 and 6, the hook member 70 is formed in the middle of its length, and has a bearing 72 into which the first protruding shaft 65 of the frame body 62 fits. The U-shaped lock groove 71 having a groove width substantially equal to the diameter of the shaft portion 41 of the lock pin 40 and extending halfway toward the bearing portion 72 from the portion, and protruding from the other end portion into a 1/4 circular sector shape. And a cam projection 73 that engages with the knob 90.

As shown in FIG. 4, the cam projection 73 has a locking surface 74 that is substantially vertically raised, and a cam surface 75 having a quarter-arc shape that is continuous with the locking surface 74. And
As shown in FIG. 4, the hook member 70 fits the bearing portion 72 into the first protruding shaft 65 of the frame body 62 and stops the bearing. As shown in FIG. 4, the first torsion spring 80 has a coil portion at the center thereof passed through a bearing portion 72 of the hook member 70, and one end of the first torsion spring 80 is connected to the hook member 70, and the other On the upper surface of the stopper 61 of the frame body 62 elastically.

Therefore, the hook member 70 is urged clockwise around the first protruding shaft 65 of the frame main body 62 in FIG. 4 by the spring restoring force of the first torsion spring 80 that tries to untwist. As shown in FIGS. 4 and 5, the operation knob 90 has a hollow box shape having an open lower surface and a rear surface. More specifically, a front wall 92 for closing an open front surface of the frame body 62, Wall 92
An upper wall 93 extending backward from an upper edge of the back surface of the
A pair of left and right side walls extending rearward from the left and right side edges of the back
94 and 94, and are formed integrally with a resin such as nylon, which has appropriate rigidity. 4 and 5, an insertion groove 91 having an open lower surface is formed inside the front wall 92, the upper wall 93, and the left and right side walls 94.

The corner between the front wall 92 and the upper wall 93 is shown in FIG.
As shown in FIG. 5, a shaft hole 95 having a circular cross section into which the second protruding shaft 66 of the frame body 62 fits is formed. A locking step 96 that engages with the cam projection 73 of the hook member 70 is formed at the lower end of the upper wall 93.
In the position where the locking surface 74 abuts, the front surface of the front wall 92 of the operation knob 90 is locked at a non-projecting position that is substantially flush with the front end surface of the protruding edge 64 of the frame body 62, and The hook members 70 are locked at the lock positions, respectively.

Then, as shown in FIGS. 4 and 5, the operation knob 90 fits the shaft hole 95 into the second protruding shaft 66 of the frame body 62 and stops the shaft. As shown in FIG. 5, the second torsion spring 100 is configured such that its center coil portion is connected to the second protruding shaft 66 of the frame main body 62.
Then, one of the winding ends is elastically hooked to the operation knob 90, and the other is elastically hooked to the lower surface of the stopper 61 of the frame body 62.

Therefore, the operating knob 90 is moved by the spring restoring force of the second torsion spring 100 which tries to untwist, as shown in FIGS.
In 5, the frame body 62 is biased counterclockwise about the second projecting shaft 66. On the other hand, on opposite side surfaces of the operation knob 90 and the hook member 70, as shown in FIG. 6, a projection 97 and an elastic claw 76 that engage with each other are formed, respectively. The projection 97 and the elastic claw 76 are for preventing the locking step 96 of the operation knob 90 and the locking surface 74 of the cam projection 73 of the hook member 70 from engaging again when the lock is released. is there.

That is, when the lock is released, the operation knob
The 90 rotates clockwise around the second protruding shaft 66 of the frame body 62 as shown in FIG. At this time, the protrusion 97 of the operation knob 90 engages with the elastic claw 76 of the hook member 70. When the operation knob 90 is further rotated, the projection 97 is pushed by the tapered surface of the projection 97 of the operation knob 90, and the elastic claw 76 of the hook member 70 bends, so that the projection 97 gets over the elastic claw 76. Thereafter, even if the operation knob 90 attempts to return and rotate due to the spring restoring force of the second torsion spring 100, the projection 97 engages with the elastic claw 76 of the hook member 70, thereby preventing the return rotation of the operation knob 90. Is done. For this reason, the locking step 96 of the operation knob 90 is engaged with the locking surface 74 of the cam projection 73 of the hook member 70, thereby preventing both from being locked again.

Next, a lock device having the above-described configuration.
The usage procedure of 10 is explained. First, as shown in FIGS. 3 to 5, to open the door 30 in the closed state, the operation knob of the lock device 10 is used.
90 may be pushed into the frame main body 62 as shown in FIG. When the operation knob 90 is pushed in, the operation knob 90 rotates clockwise around the second projecting shaft 66 of the mounting frame 60 as shown in FIG. At this time, the locking surface 74 of the cam projection 73 of the hook member 70 is disengaged from the locking step 96 of the operation knob 90, and the rotation of the hook member 70 becomes possible. At this time, the operation knob
Since the protrusion 97 of the hook 90 goes over the elastic claw 76 of the hook member 70, the operation knob 90 is rotated back by the spring restoring force of the second torsion spring 100, and the locking step 96 is moved to the hook member 70.
It does not engage with the locking surface 74 of the cam projection 73 again.

On the other hand, as shown in FIG. 1, the hook member 70 rotates clockwise around the first protruding shaft 65 of the mounting frame 60 due to the spring restoring force of the first torsion spring 80 which tries to untwist. With this rotation, the shaft portion 41 of the lock pin 40 fixed to the housing 20 gradually comes off from the lock groove 71 of the hook member 70 as shown in FIG. , The door 30 is slightly pushed open.

The hook member 70 comes into contact with a stopper 61 provided on the mounting frame 60 as shown in FIG.
The spring restoring force of the first torsion spring 80 is received, and the rotation of the hook member 70 stops. In this stop position, the lock groove 71 of the hook member 70 is in a standby position in which the lock groove 71 is opened obliquely rearward, and the shaft portion 41 can be disengaged from the lock groove 71.

At the same time, as shown in FIG. 1, the operating knob 90 rotates counterclockwise around the protruding shaft 66 of the mounting frame 60 due to the spring restoring force of the second torsion spring 100 which attempts to untwist. , Protruding from the front of the door 30. Then, by inserting a finger from below into the insertion groove 91 of the operation knob 90 protruding from the front surface of the door 30, and pulling the door 30 forward, as shown in FIG.
30 is opened, and the opening 21 of the housing 20 is opened. or,
When the door 30 is opened, the shaft portion 41 is disengaged from the lock groove 71 of the hook member 70.

On the other hand, when closing the door 30, the door 30 may be pushed toward the housing 20. When the door 30 is pushed in, the shaft portion 41 of the lock pin 40 fits into the lock groove 71 at the standby position of the hook member 70 in the mounting frame 60 via the slit 61 of the mounting frame 60. Further, when the door 30 is pushed in, the lock groove 71 of the hook member 70 is pushed by the shaft portion 41, and as shown in FIG. The shaft portion 41 advances in the lock groove 71 while rotating counterclockwise around the second protruding shaft 66.

At the same time, with the rotation of the hook member 70, the lower surface of the upper wall 94 of the operation knob 90 is pushed by the cam projection 73 of the hook member 70, and the operation knob 90 is moved as shown in FIG. ,
The second torsion spring 100 is rotated clockwise around the protruding shaft 66 of the mounting frame 60 against the spring restoring force of the second torsion spring 100 that attempts to untwist. For this reason, the operation knob 90 is moved from the front of the door 30 to the mounting frame 60.
Retract inside.

Thereafter, a locking step 96 formed on the lower surface of the distal end of the upper wall 94 of the operation knob 90, as shown in FIG.
When it gets over the cam surface 75 of the cam 73, it is hooked on the locking surface 74 of the cam projection 73. For this reason, the first torsion spring 80 and the second torsion spring 80 are formed by the locking surface 74 of the hook member 70 and the locking step 96 of the operation knob 90.
The spring restoring force with the torsion spring 100 is received together, and the rotation of the hook member 70 and the operation knob 90 is stopped.

At this stop position, as shown in FIG. 4, the shaft portion 41 of the lock pin 40 fits deeply into the lock groove 71 of the hook member 70, and the lock groove 71 becomes substantially vertical. Cannot be removed from the lock groove 71. Therefore, the door 30 is locked in the closed position, and the opening 21 of the housing 20 is closed by the closed door 30.

As shown in FIG. 4, the front surface of the operation knob 90 is substantially flush with the front end surface of the protruding edge 64 of the frame body 62, and the front surface of the door 30 is substantially flat. In the embodiments shown in the drawings, kitchen units, hanging cabinets mounted above them, kitchen furniture such as cupboards, bookcases, front doors of general storage furniture such as closets, and the like are exemplified. However, the present invention is not limited to such furniture, and may be used as a lock device for a door of a storage in a trunk of an automobile for storing tools and the like.

The mounting frame 60 is composed of two members, the frame main body 62 and the back cover 63, but is not limited to this, and may be composed of a single member. Further, the cam surface 75 is
Although provided on 70, the hook may be provided on the operation knob 90, and the hooking step 96 may be provided on the hook member 70. Although the first torsion spring 80 as the first urging means and the second torsion spring 100 as the second urging means have been described as an example, the invention is not limited to the torsion spring, and a spring or the like may be used.

[0035]

As described above, according to the present invention, in the locked state, the lock pin is deeply bitten into the lock groove of the hook member, so that the lock is secure and the reliability is improved. Is high. When the locked state is released, the door is slightly pushed open from the housing, and the operation knob projects from the front of the door, so that the door is easily opened. In addition, in the locked state, the operation knob retracts into the door substantially flush with the front surface of the door, so that the front surface of the door can be kept flat.

Further, when the door is closed, the protruding operation knob is retracted into the door due to the rotation of the hook member, so that it is not necessary to push the operation knob one by one, which is convenient.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part of a lock device.

FIG. 2 is a perspective view of an essential part showing an unlocked state of the lock device.

FIG. 3 is a main part cross-sectional view showing a locked state of the lock device.

FIG. 4 is a sectional view corresponding to FIG. 1 and taken along the line VI-VI of FIG. 3;

FIG. 5 is a sectional view taken along line VV of FIG. 3;

FIG. 6 is a longitudinal sectional view of a main part of FIG. 3;

FIG. 7 is a main part longitudinal sectional view corresponding to FIG. 1 and showing an unlocking operation of the lock device.

[Explanation of symbols]

 10 Locking device 20 Housing 21 Opening 30 Door 31 Through hole 40 Lock pin 50 Device main body 60 Mounting frame 61 Stopper 70 Hook member 71 Lock groove 75 Cam surface 80 First torsion spring as first urging means 90 Operating knob 91 Difference Groove 100 Second torsion spring as second urging means

Claims (1)

(57) [Scope of request for utility model registration] 1. A door lock device that is provided between a housing having an opening and a door that is pivotally mounted on the housing and opens and closes the opening, and locks the door in a closed position. A lock pin fixed within the housing, and a device main body provided on the door while the door is locked to the closed position by engaging with the lock pin, and the device main body penetrates through the front and back surfaces of the door. A mounting frame fixed in the through-hole and a locking groove fixed to the mounting frame and having the lock pin fitted into one end thereof. When the door closes, the lock pin is inserted into the lock groove. receiving,
A hook member that is pressed by the lock pin and rotated in the locking direction while biting the lock pin deeply into the lock groove,
First biasing means for rotating the hook member in a lock release direction opposite to the lock direction;
The hook member receives the rotational force of the urging means, locks the hook member at a standby position where the lock pin can be disengaged from the lock groove, and projects from the front surface of the door to the stopper provided on the mounting frame and the mounting frame. While being axially fixed as possible, when it protrudes from the front of the door, it has an insertion groove into which a finger can be inserted,
With the rotation of the hook member in the locking direction, an operation knob that is rotated from a protruding position protruding from the front surface of the door toward a non-protruding position that closes the through hole of the door almost flush with the front surface of the door, A second urging means for rotating the operation knob from the non-projection position toward the projection position, wherein the first engagement member is engaged between the hook member and the operation knob at a lock position of the hook member; While receiving the urging forces of the urging means and the second urging means, the cam surface is formed such that when the operation knob is pushed into the mounting frame from the non-projecting position, the engaged state is released. Features a door lock device.