JP2752052B2 - Locking device for door and locked 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 double-door type door provided on a sink cabinet, a hanging cabinet, a cupboard, a bookcase, etc., in which one door in a closed position is closed and the other door is closed. The present invention relates to a lock device used when locking to a door mounting / fixing portion using movement, and an improvement of a locked member provided on the door mounting / fixing portion side.

[0002]

2. Description of the Related Art FIG.
As shown in FIG. 1, one of the pair of doors 2A and 2B which is swingably openable and closable on the door mounting and fixing portion.
B, a plate-shaped bracket 50 protruding toward the inner surface of the door is attached, and an L-shaped engaging member fixed to the door attachment fixing portion is attached to a vertically extending tubular guide member 51 fixed to the bracket 50. A lock member 53 that engages with the stop member 52 from below is slidably inserted along the up-down direction, and the lock member 53 is engaged between the lock member 53 and the bracket 50. A coil spring 54 is provided for urging downward to move toward the release position, and a substantially U-shaped cam plate 55 provided on the inner surface of the other door 2A is provided at the lower end of the lock member 53. Roller 56 that locks the lock member 53 to the engagement fixed position against the elastic urging force of the coil spring 54 in accordance with the contact of
(See, for example, Japanese Utility Model Laid-Open No. 55-35113).

[0003]

According to the lock device described above, when both the doors 2A and 2B are in the closed posture,
Since the roller 56 on the side of the one door 2B rides on the cam plate 55 on the side of the other door 2A, the one door 2B
Does not open even if the opening operation is performed, and the two doors 2A,
2B can always be reliably opened and operated in a predetermined operation order, but the locking member 5
3 and a coil spring 54, and a cam plate 55 must be attached to the other door 2A while adjusting the position of the roller 56, so that the door 50 can be attached to the doors 2A and 2B. It takes a lot of trouble. In addition, due to deformation of the door fixing portion and the opening / closing door due to many years of use, the locked member 52 on the door fixing portion and the locking member 53 on one of the doors 2B in the front-rear direction. When the relative mounting position changes, one of the doors 2B is in the closed posture and the other door 2B is in the closed position.
When the roller A of the door 2B is pushed up by the cam plate 55 on the side of the door 2A by swinging the door A to the closed position, the upper end of the lock member 53 is locked by the door mounting fixed part. There is a possibility that it collides with 52 and deforms and damages the cam plate 55 and the tubular guide member 51. As means for suppressing deformation and damage of parts due to deformation such as warpage of the door mounting / fixing portion and the opening / closing door, a cylindrical guide member 5 is provided.
It is conceivable to increase the gap in the front-rear direction between the inner surface of the through-hole 1 and the outer surface of the lock member 53. However, in this case, there is a problem that the opening / closing door 2A in the closed position rattles in the front-rear direction. .

[0004] The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to always open and operate both doors in a predetermined operation order, and to provide a long-term operation. Absorbs as much as possible the change in the mounting interval due to deformation of the door mounting fixed part and the opening and closing door due to use, etc.
A lock device for an open / close door that can lock one open / close door satisfactorily in a state without rattling, and that can facilitate and efficiently attach the door to the open / close door. It is an object of the present invention to provide a locked member capable of better absorbing a change in an installation interval due to a deformation such as a warpage of a door installation fixing portion and an opening / closing door during use.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a locking device for an opening / closing door which comprises a pair of doors which can be swingably opened and closed on a door mounting fixing portion. Of the opening / closing door, a casing provided with a mounting portion to one of the opening / closing doors is provided around a swing axis parallel or substantially parallel to the axis of a pin-shaped locked portion provided on the door mounting / fixing portion. A hook-shaped lock member that engages with the locked portion and locks one of the open / close doors in the closed position by swinging; a return biasing body that biases the lock member to return to the disengaged position; When one of the open / close doors is in the closed position and the other open / close door is pivoted to the closed position, the lock member is returned with the return biasing force of the return biasing body in contact with the other open / close door. And an operating member for performing a locking operation at the engagement fixed position against the The locking member is provided with an elastic holding body that protrudes from the engagement operation surface of the locking member toward the pivot axis side and is elastically deformed by being brought into contact with the locked portion. On the point. According to this characteristic configuration, when the one door is in the closed position and the other door is rocked to the closed position, the hook-shaped locking member is locked by the operating member that comes into contact with the door. When actuated, the lock member engages with the pin-shaped locked portion on the door mounting fixed portion side. Therefore, in a state where both the doors are in the closed posture, even if one of the doors is opened, the door does not open, and the doors can always be reliably opened and operated in a predetermined operation order. In addition, the lock member is formed in a hook shape that can swing around an axis parallel or substantially parallel to the axis of the pin-shaped locked portion on the door mounting / fixing portion side. Since there is a large engagement space on the pivot axis side of the joint surface, the engageable range of the lock member with the pin-shaped locked portion is widened, and further, the hook-shaped lock member is moved to the locked portion. When the locking member is engaged with the locking member, the elastic holding member protruding from the engaging action surface of the locking member toward the pivot axis side is elastically deformed and deformed in accordance with the contact with the locked portion. The relative movement between the member and the locked portion is restricted. As a result, due to deformation such as warping of the door mounting fixed part and the opening and closing door due to long-term use,
Even if the relative mounting interval between the locking member on the opening / closing door side and the locked portion on the door mounting fixed portion changes, it is easy to absorb the change in the mounting interval, and the hook-shaped locking member is locked in the form of a pin. The portion can be securely engaged with no or little backlash. In addition, since the lock member, the return biasing member, and the operating member are assembled to the casing itself,
Only one of the doors needs to be attached, and the attachment work can be made easier and more efficient than the conventional device.

According to a second aspect of the present invention, there is provided a locking device for an opening / closing door, wherein the operating member is swingable about an axis perpendicular to or substantially perpendicular to the pivot axis of the lock member. And an interlocking projection that engages with a through hole formed in the other end of the lock member from the direction of the pivot axis at the pivot point shaft portion of the operating member. is there. According to this characteristic configuration, since the interlocking projection of the operation member is merely engaged in the through hole of the lock member, the number of components is only two members, the operation member and the lock member. Since the mounting interval can be reduced, the simplification and compactness of the lock device for the door can be achieved.

According to a third aspect of the present invention, there is provided a locking device for an opening / closing door, wherein the locking member is provided on an inner peripheral surface facing a through hole of the locking member when the locking member is at the disengaged position. A first swing regulating surface that makes surface contact and a second swing regulating surface that makes surface contact with the interlocking projection when the lock member is at the engaging and fixing position are formed, and the first swing regulating surface and the second swing regulating surface are formed. The point that the minimum opposing interval with the swing regulation surface is configured to be slightly larger than the diameter of the interlocking projection. According to this characteristic configuration, when the lock member is switched to the disengagement position and the engagement fixed position, the first swing restriction surface and the second swing restriction formed on the inner surface of the through hole of the lock member. The surface and the interlocking projection of the operating member come into surface contact with each other, and the switching operation force at that time can be dispersed and received. Further, the minimum opposing distance between the first swing regulating surface and the second swing regulating surface is configured to be slightly larger than the diameter of the interlocking projection, so that the lock member is engaged with the disengaged position. Even if it is located in the middle between the fixed position and the interlocking projection of the operating member and the lock member, play does not occur or rarely occurs. Therefore, while improving the durability of the interlocking projection of the operating member and the inner peripheral surface facing the through hole of the lock member, the lock member is provided over the entire range from the disengaged position to the fixed position of the lock member. The play (play) between the member and the operating member can be suppressed.

According to a fourth aspect of the present invention, there is provided a locking device for an opening / closing door, wherein the casing is directed toward one side in a third direction perpendicular or substantially perpendicular to both the swing shafts. And a lid that closes the opening of the case, and the swing fulcrum shaft portion of the lock member and the swing fulcrum shaft portion of the operating member are respectively disposed in the case in the third position. A bearing portion for receiving the other side of the cover so as to be freely inserted and withdrawn, and further, on the inner surface of the lid, a swinging fulcrum shaft portion of a lock member and a swinging fulcrum shaft portion of an operating member received by the bearing portion. Is formed to form a retaining portion for preventing the respective escape movements. According to this characteristic configuration, after each of the swinging fulcrum shaft portion of the lock member and the swinging fulcrum shaft portion of the operating member are mounted on the bearing portion of the case, the opening of the case is simply closed with the lid. Since the swing fulcrum shaft portion of the lock member and the swing fulcrum shaft portion of the operating member received by the bearing portion can be retained by the retaining portion of the lid, the parts can be assembled to the casing. Work can be facilitated and efficiency can be improved.

According to a characteristic feature of the locked member described in claim 5 of the present invention, the locked portion is provided between the first shaft portion engaged with the lock member and one end of the first shaft portion. And a second shaft portion connected to the shaft center in a state of being eccentric to one side in the radial direction with respect to the shaft center, and wherein the second shaft portion is fixed to the door fixing portion. Rotational operation is possible, and
The point is that it is supported in a state where it cannot rotate when it comes into contact with the lock member. According to this characteristic configuration, due to deformation of the door mounting fixed portion and the opening / closing door due to long-term use, the locking member on the opening / closing door side and the first shaft portion of the locked portion on the door mounting / fixing portion side. When the relative mounting interval changes, the second shaft portion is rotated with respect to the case on the door mounting fixed portion side, thereby correcting the mounting interval between the lock member and the first shaft portion of the locked portion to the set interval. Alternatively, since the state can be corrected to a state close to the set interval, a reliable engagement state between the hook-shaped locking member and the pin-shaped locked portion can be maintained for a long period of time.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] As shown in FIGS. 1 to 10, a pair of right and left side plates (or vertical frames) 1A and 1B of a door mounting / fixing portion 1 are attached to each other so as to swing freely around a vertical axis. Of the two doors 2A and 2B, one of the doors 2A is engaged with a first locked portion 13 provided at the center in the vertical direction and the other door 2B, and the two doors 2A and 2B are closed. And an operating shaft 16 for disengaging the engaging portion 14A by an operation from the front side of the one door 2A.
A key device A is provided with a top plate (or upper frame) 1C and a bottom plate (or lower frame) 1D of the door mounting / fixing unit 1 at each of the upper and lower ends of the other opening / closing door 2B. A locking member 4 for fixing the opening and closing door 2B in a closed posture by engaging with a pin-shaped second locked portion 3 provided in
A torsion coil spring (an example of a return urging member) 5 for urging the lock member 4 to return to the disengaged position, and the other opening / closing door 2B
When one of the doors 2A is swung to the closed position in a state in which the door is in the closed position, the lock member 4 is twisted with the contact with the one door 2A to resist the return biasing force of the coil spring 5. And a lock device B provided with an operating member 6 for locking the lock at the engagement fixed position.

Next, a specific configuration of the key device A will be described. As shown in FIGS. 2 to 6, one open / close door 2 </ b> A
An opening 12 formed in the casing 10 is formed in a casing 10 made of an ABS resin, which is attached to one side surface with screws or the like.
Locked portion 1 provided on the other opening / closing door 2B
3 and a pair of coil springs 15 as an example of an elastic urging member for urging the latch main body 14 toward the engaging side. And a cylindrical operation shaft 16 made of Duracon resin which is movable in a direction (including a substantially orthogonal direction) perpendicular to the extending / retracting direction of the latch body 14. The latch main body 14 is brought into contact with the pressing body 17 provided at one end of the operation shaft 16, and the latch main body 14 is brought into contact with the coil body by the operation of pulling the operation shaft 16 toward the surface of the opening / closing door 2 </ b> A in the contact state. A cam surface 18 is formed to move toward the disengagement side against the elastic restoring force of the spring 15. Further, the other end of the operation shaft 16 has one end side of the operation shaft 16 (the back surface of the door A). Side) through the connecting bolt 19 inserted from The operating member 20 of the knob or the like are fixedly connected.

The casing 10 includes a case 21 opening toward the other end of the operation shaft 16,
And a lid 22 which is detachably fitted and held in a step formed on the periphery of the opening of the case 21 in a state where the opening is closed. A cylindrical guide tube portion 22A is formed so as to protrude so as to slidably move the other end portion side of the slide member 16 along the axial direction.

Each of the inner surfaces of the side walls 21A of the case 21 along the long side direction is orthogonal to both the extending and retracting direction of the latch body 14 and the axis of the operation shaft 16 of the latch body 14. A concave portion 21B is formed on each of both side surfaces in the direction (thickness direction of the opening and closing door 2A) so that the spring receiving portion 14B is movably engaged in the retracting direction. Latch body 1
Each of the end faces opposed to the columnar spring retaining protrusion formed on the spring receiving portion 14B of No. 4 is configured as a spring receiving portion 21C for holding the coil spring 15 between the spring receiving portion 14B and the spring receiving portion 14B. is there. The latch body 14 is provided on one side wall 21A along the short side direction of the case 21.
An opening 12 through which a tapered (substantially triangular prismatic) engaging portion 14A formed at the front end of the first locking portion 13 moves in and out is cut out, and the first locked portion 13 has a latch body 14 formed therein. The engaging portion 14A is engaged with the concave portion 1 having a locking surface capable of preventing the engaging portion 14A from moving in the door opening direction.
3a are formed.

On the inner surface of the top plate 21D of the case 21, there is provided a pair of guide plates 23 for guiding a rectangular column 16A formed on the operation shaft 16 slidably only in the axial direction. The guide surfaces of the two guide plates 23 are formed on the outer surface of the quadrangular columnar portion 16A of the operating shaft 16 along the axial direction. A substantially triangular prism-shaped ridge 23a is formed integrally with the vertical groove 16a having a substantially V-shaped surface.

The latch body 14 has one end of the operating shaft 16 and the two guide plates 2 in a state in which the latch body 14 is allowed to move back and forth between the engaged position and the disengaged position.
3 is formed into a rectangular through hole 24 into which the latch body 14 extends and retracts, and between the inner surface of the latch body 14 facing the through hole 24 and the outer surface of the operation shaft 16, and the operation shaft 16.
A substantially V-shaped cam groove 25 provided with the cam surface 18 in each of the portions facing each other in a direction orthogonal to or substantially orthogonal to the axial center direction (thickness direction of the door A); An elongated columnar pressing projection constituting the pressing body 17 is formed. As shown in FIG. 3, when the latch main body 14 is held at the engagement position where the latch main body 14 protrudes to the outside of the case 21 by the elastic restoring force of both coil springs 15 as shown in FIG. The cam surface 18 is configured to be positioned at one end on the mountain (top) side (one end on the side farthest from the back surface of the opening / closing door 2A). The end faces of the two ridges 23a on the case 21 side contact the one end of the vertical groove 16a formed in the columnar part 16A from the axial direction, and the end face of the operating member 20 is the guide cylinder of the lid 22. The guide tube 27 is configured to come into contact with the end surface of the portion 22A in the axial direction with respect to a guide cylinder 27 described later. However, the door 2A
Depending on the mounting position error of the casing 10 with respect to the cam surface 18, the tip of the engaging portion 14 </ b> A of the latch
The operating shaft 16 is pushed into the latch body 14 in the range from the contact state to the depression 13a of the locked portion 13 to the position where the pressing projection 17 is located at the peak (top) of the cam surface 18. Be free. That is, rattling (play) occurs in the operating member 20 connected to the operating shaft 16 in the above-described range. In the present invention, however, in the guide cylindrical portion 22 </ b> A of the lid 22, The flange 22b formed at the end of the portion 22A and the square pillar 16 of the operating shaft 16
The operating shaft 16 is moved and biased toward one end in the axial direction between the other end surface of the operating shaft 16 and the other end surface of the operating shaft 16, in other words, with respect to one end of the vertical groove 16 a formed in the square columnar portion 16 A of the operating shaft 16. The operating shaft 1 is arranged such that the end faces of the two projecting ridges 23a on the case 21 side come into contact with the axial direction, and the end face of the operating member 20 comes into contact with the end face of the guide cylinder 27 from the axial direction.
Since the compression coil spring 26, which is an example of a second elastic urging member for moving and urging the actuator 6 toward one end in the axial direction, is interposed, the operation member 20 connected to the operation shaft 16 has a play (play). Does not occur.

Both end surfaces in the width direction of the two guide plates 23 and the outer surface portion of the operating shaft 16 located on the same side as the both end surfaces are brought into contact with the inner surface facing the through hole 24 of the latch body 14. And a guide surface for slidingly guiding the latch body 14 so as to be able to move back and forth, and the connecting bolt 19 is passed through the cylindrical hole of the operating shaft 16 to the top plate 21D of the case 21 so that the operating member 20 is A through hole 21b is formed in the female screw portion for screwing operation. Also,
A guide cylinder 27 made of ABS resin is attached to a through hole 28 formed in the opening / closing door 2A so as to slidably guide the cylindrical portion of the operation member 20 in a tensionable manner.

The first locked portion 13 is integrally formed of a nylon resin, and a screw 2 is attached to the back surface of the other door 2B.
In the front surface of the mounting plate portion 13b provided with a screw hole for tightening and fixing at 9, the above-mentioned V-shaped portion is provided at a portion opposed to the engaging portion 14A of the latch body 14 provided on the one opening and closing door 2A side. A concave portion 13a is formed.

The engaging portion 14A of the latch body 14
Is formed on a cam surface 14a that is inclined at an angle of 45 degrees with respect to the front-rear direction (door thickness direction) and the left-right direction, and one of the doors 2B is in a closed posture when the other door 2B is in a closed posture. When the opening / closing door 2A is swung to the closed position, the latch body 14 is temporarily attached to both coil springs 15 with the contact between the cam surface 14a of the latch body 14 and the first locked portion 13. After retreating to the disengagement position side against the urging force, the urging force of the two coil springs 15 again causes the protrusion to move to the engaging position and engage with the recess 13 a of the first locked portion 13. It is not necessary to disengage the operation member 20 each time the opening / closing door 2A is swung to the closed position. However, as described above, when the cam surface 14a is formed on the rear surface side of the door of the engagement portion 14A of the latch body 14, the collapsed items due to an earthquake or the like are located on the rear surface sides of both the open / close doors 2A and 2B in the closed posture. When a large external force is applied in the opening direction due to contact with the cam surface 1 of the latch body 14 in the engaged state.
4a is pressed by the first locked portion 13, and the latching component retreats to the disengagement position side against the urging force of both coil springs 15 due to the pressing component force.
4, the margin of engagement between the engaging portion 14A and the first locked portion 13 gradually becomes shallow, and finally, the engagement between the two is released, the two opening / closing doors 2A and 2B open, and the stored items fall. May be scattered around. However, in the present invention, the other door 2
Since the lock device B is provided in B, even if a large amount of external force in the opening direction acts on the back side of the two open / close doors 2A and 2B in the closed posture due to the collapse of a stored item due to an earthquake or the like. Both doors 2A, 2B are maintained in the closed position.

Next, a specific configuration of the lock device B will be described. As shown in FIGS. 2 and 7 to 10, a pin provided on the door mounting and fixing portion 1 in an up-down direction on an ABS resin casing 32 provided with a mounting portion 31 to the other opening / closing door 2 </ b> B. A swing axis (hereinafter referred to as a vertical axis) Y parallel or substantially parallel to the axis of the second locked portion 3
A hook member 4 made of nylon resin, which is swingable around the periphery, and is swingable about a swing axis X (hereinafter, referred to as a horizontal axis) which is orthogonal or substantially orthogonal to the vertical axis Y. When the operating member 6 is pressed by being brought into contact with one of the opening and closing doors 2A that is pivotally operated to the closed position, the lock member 4 is engaged. Interlocking means 7 for interlocking the lock member 4 and the operating member 6 is provided for swinging from the release position to an engagement fixing position for engaging the second locked portion 3. A torsion coil spring (which is an example of a return biasing member) 5 that biases the lock member 4 to return to the disengaged position is interposed between the lock member 4 and the lock member 32.

The tip-side working surface portion 4a of the engaging working surface 4A of the hook-shaped locking member 4 is formed in an arcuate surface with the longitudinal axis Y as the center of rotation. The end-side working surface portion 4b is formed as an arc surface having a large curvature in a state of gradually approaching the longitudinal axis Y from a virtual arc surface passing through the tip-side working surface portion 4a. The locking member 4 protrudes toward the vertical axis Y from the engagement surface 4A, and can bend and deform to the side away from the vertical axis Y with contact with the pin-shaped second locked portion 3. An arc-shaped elastic holding body 4B is formed by integral molding. In the case of this embodiment, the pin-shaped second locked portion 3 is compared with a case where the pin is locked by a pin which can move up and down in the vertical direction.
Since the range in which the lock member 4 can be engaged with the
Due to the deformation of the door mounting / fixing portion 1 and the opening / closing door 2B due to the use for many months, the relative mounting position of the locking member 4 on the opening / closing door 2B and the second locked portion 3 on the door mounting / fixing portion 1 side. , The hook-shaped lock member 4 can be engaged with the pin-shaped second locked portion 3 as long as the change margin is within the range of the engagement swing of the lock member 4. Further, at this time, the elastic holding body 4B is elastically bent and deformed in accordance with the contact with the pin-shaped second locked part 3, and the second locked part 3 engaged with the lock member 4 is deformed. Can be pressed and held without play. The interlocking means 7 is provided with the operating member 6
A pin-shaped interlocking projection 6A provided on the pivot shaft portion 6B of
The interlocking projection 6A is formed of a through hole 4C at the other end of the lock member 4 which is engaged in a direction parallel to the longitudinal axis Y, and the inner peripheral surface facing the through hole 4C has When the lock member 4 is in the disengaged position, the interlocking projection 6A
The first swing regulating surface 4d that makes surface or line contact with the first swing regulating surface, and the second swing regulating surface 4e that makes surface or line contact with the interlocking projection 6A when the lock member 4 is at the engagement fixed position is a lock member. 4 at an intermediate position in the plate thickness direction so as to intersect substantially in a V-shape. Further, the minimum opposing distance between the first swing regulating surface 4e and the second swing regulating surface 4d in the longitudinal direction of the through hole 4, that is, the first swing regulating surface 4d and the second swing regulating surface 4d.
e has a minimum diameter at a point where it intersects in a V-shape, is slightly larger than the diameter of the interlocking projection 6A, and the lock member 4 is located between the disengaged position and the engaged fixed position. , The play generated between the interlocking projection 6A of the operating member 6 and the inner surface of the through-hole 4C of the lock member 4 is reduced.

The casing 32 includes the two shaft cores Y and X.
A case 32A that opens toward one side in a third direction that is both orthogonal or substantially orthogonal to the door, in other words, a case 32A that opens toward the back side of the door 2B;
And a lid 32B removably fitted and held on the periphery of the opening of the case 32A in a state where the opening of A is closed, and the case 32A has a fan-like shape having two screw holes. The mounting portion 31 is formed by integral molding. Further, the case 32A has a groove-shaped first bearing portion 32a that rotatably supports the swing fulcrum shaft portion 4D of the lock member 4 around the vertical axis Y, and a swing fulcrum shaft portion of the operating member 6. A groove-shaped and notched second bearing portion 32b for rotatably supporting 6B around the horizontal axis X is formed, and a first bearing portion 32a of a case 32A is formed on the inner surface of the lid 32B. A pair of restricting plate portions 32c that prevent the swinging fulcrum shaft portion 4D of the lock member 4 supported by the lock member 4 from coming out of contact, and a fulcrum fulcrum shaft of the operating member 6 supported by the second bearing portion 32b of the case 32A. A pair of restricting plate portions 32d for preventing the portion 6B from coming out of contact are integrally formed. The top plate 1C and the bottom plate 1 of the door mounting / fixing section 1
Each of D has an open / close door 2A, 2B that has been swung to a closed position.
Is provided with a stopper member 1 </ b> E in contact with.

[Second Embodiment] FIGS. 11 to 14 show another embodiment of a locked member used in the lock device B. The locked member 3 is made of a Duracon resin. 4 and a second shaft portion 3B connected to one end of the first shaft portion 3A so as to be eccentric to one side in the radial direction with respect to the axis of the first shaft portion 3A. And consisting of
The second shaft portion 3B is rotatable with respect to a cylindrical case 40 made of nylon resin which is driven into and fixed to the door mounting / fixing portion 1, and cannot be rotated by contact with the lock member 4. It was supported by driving in the state. The cylindrical portion 40 </ b> A of the case 40 is in contact with a retaining projection 40 a that cuts into the inner peripheral surface of the mounting hole 41 when driven into the mounting hole 41 formed in the door mounting / fixing portion 1, and contacts the opening periphery of the mounting hole 41. The corresponding flange portion 40b is formed, and two side wall portions 40B of the cylindrical portion 40A which are opposed to each other with the cylindrical shaft core interposed therebetween have a smaller facing distance toward the bottom of the mounting hole 41. In this state, it is bent in a substantially U-shape. Slits 42 are formed along both sides in the circumferential direction of each of the U-shaped side wall portions 40B in the circumferential direction of the cylinder, and each side wall portion 40B is attached as the locked portion 3 is driven. Each of the bent portions of the side wall portions 4B is provided with a locking groove 3C of the locked portion 3 which has been driven, while being configured to be elastically deformable and deformable until it comes into close contact with the inner peripheral surface of the hole 41. Locking projection 4 to be engaged
OC is integrally formed. First shaft portion 3 of the locked portion 3
At the other end of A, an operation groove 3D for rotating the locked portion 3 with a tool against the frictional resistance between the second shaft portion 3B and the case 40 is formed. Other configurations are the same as those of the above-described first embodiment.

[Other Embodiments] In the above-described embodiment, coil springs are used as the return urging member 5, the second elastic urging member 15, and the second elastic urging member 26, respectively. Other elastic urging members such as rubber may be used. In the above-described embodiment, the lock device B provided on the double-opening door of furniture such as a cupboard or a bookcase has been described. However, the technology of the present invention is also applied to the lock device B provided on the double-open door of a fitting. Can be applied. In the above-described embodiment, the lock device B is provided at two locations above and below the other door 2B. However, the lock device B may be provided at any one of the upper and lower directions of the door 2B. In the above-described second embodiment, the mounting interval between the first shaft portion 3A and the lock member 4 of the lock device B is continuously changed by rotating the second shaft portion 3B of the locked portion 3 supported by the case 40. The first shaft portion 3A is shifted from the case 40 in phase with respect to the case 40.
By replacing the shaft portion 3B, the mounting interval between the first shaft portion 3A and the lock member 4 of the lock device B may be modified stepwise. In the above-described embodiment, the elastic holding member 4B is formed integrally with the lock member 4. However, the elastic holding member 4B is manufactured separately from the lock member 4, and the elastic holding member 4B is attached to the lock member 4 with screws or the like. May be attached.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[0025]

[Brief description of the drawings]

FIG. 1 is an overall perspective view of furniture having a double door opening and closing door showing a first embodiment.

2A is a perspective view of a main part when one of the doors 2A is closed, and FIG. 2B is a perspective view of a main part when the two doors 2A and 2B are in a closed posture.

FIG. 3A is a horizontal cross-sectional view when the key device A is in a locked state. FIG. 3B is a horizontal cross-sectional view when the lock device A is unlocked.

FIG. 4 is an exploded perspective view of the key device A.

FIG. 5 is an exploded perspective view of a latch body and an operation shaft.

FIG. 6 is a sectional view of the key device A.

FIG. 7 is an exploded perspective view of the lock device B.

FIG. 8 is a sectional view of a lock device B;

9A is a longitudinal sectional view showing the unlocked state of the lock device B. FIG. 9B is a longitudinal sectional view showing the locked state of the lock device B.

10A is a partially cutaway side view showing the unlocked state of the lock device B. FIG. 10B is a partially cutaway side view showing the locked state of the lock device B.

FIG. 11 is a longitudinal sectional view showing a second embodiment of a locked member, immediately before driving.

FIG. 12 is a sectional view taken along line XII-XII of FIG. 11;

13 is a sectional view taken along line XIII-XIII in FIG.

FIG. 14 is a longitudinal sectional view of the locked member after driving.

FIG. 15A is a side view of a main part showing a locked state of a conventional locking device for a door, and FIG. 15B is a side view of a main part showing a locked state.

[Explanation of symbols]

 Y Oscillating shaft core X Oscillating shaft core 1 Door mounting / fixing portion 2A Opening / closing door 2B Opening / closing door 3 Locked portion 3A First shaft portion 3B Second shaft portion 4 Lock member 4A Engagement operation surface 4B Elastic holding body 4C Penetration Hole 4D Oscillating fulcrum shaft 4d First oscillating restricting surface 4e Second oscillating restricting surface 5 Return biasing body 6 Operating member 6A Interlocking projection 6B Oscillating fulcrum shaft 31 Mounting part 32 Casing 32A Case 32B Cover 32a Bearing Part 32b bearing part 32c retaining part 32d retaining part 40 case

Claims (5)

(57) [Claims] A casing provided with a mounting part (31) for one of two doors (2A, 2B) of a pair of doors (2A, 2B) that can be swingably opened and closed on a door mounting fixed part (1). In (32), the pin-shaped locked part (3) provided in the door mounting / fixing part (1) is swung around a swing axis (Y) parallel or substantially parallel to the axis of the pinned part (3). A hook-shaped lock member (4) for engaging with the locked portion (3) and fixing one of the open / close doors (2B) in a closed position; and urging the lock member (4) to return to the disengaged position. And the other opening / closing door (2) in a state where one of the opening / closing doors (2B) is in a closed posture.
When A) is pivoted to the closed position, the lock member (4) is pressed against the return biasing force of the return biasing body (5) with the contact with the other opening / closing door (2A). Attach an operating member (6) for locking operation to the engagement fixed position,
The lock member (4) protrudes from the engagement operation surface (4A) of the lock member (4) toward the pivot axis (Y) to abut on the locked portion (3). A lock device for an opening / closing door provided with an elastic holding body (4B) which is elastically deformed and deformed in accordance with the above. 2. The casing (32), wherein the operating member (6) is swingable about an axis (X) orthogonal or substantially orthogonal to the oscillation axis (Y) of the lock member (4). And the swinging fulcrum shaft (6) of the operating member (6).
B) is provided with an interlocking projection (6A) that engages with a through hole (4C) formed at the other end of the lock member (4) from the direction of the pivot axis (Y). The lock device for an opening / closing door according to claim 1. 3. A through hole (4C) of the lock member (4).
A first swing regulating surface (4d), which comes into surface contact with the interlocking projection (6A) when the lock member (4) is at the disengaged position, and a lock member (4) are engaged with an inner peripheral surface facing the lock member. A second swing restricting surface (4e) that is in surface contact with the interlocking projection (6A) when in the mating fixed position is formed, and the first swing restricting surface (4d) and the second swing restricting surface are formed. The locking device for an opening / closing door according to claim 2, wherein a minimum opposing interval with (4e) is configured to be slightly larger than a diameter of the interlocking projection (6A). 4. A case (32A) in which the casing (32) is open toward one side in a third direction orthogonal or substantially orthogonal to both the pivot axes (Y, X).
Lid (32B) for closing the opening of the case (32A)
And the case (32A)
In the inside, the swing fulcrum shaft portion (4D) of the lock member (4) is provided.
And bearing portions (32a, 32b) for receiving each of the swinging fulcrum shaft portions (6B) of the operating member (6) from the other side in the third direction so as to be freely inserted and withdrawn, and further comprising the lid (32).
On the inner surface of (B), a swing fulcrum shaft portion (4D) of the lock member (4) received by the bearing portions (32a, 32b).
And a stopper portion (32c, 32) for preventing the swinging fulcrum shaft portion (6B) of the operating member (6) from coming out of contact with each other.
The lock device for an opening / closing door according to claim 2 or 3, wherein d) is formed. 5. A lock device for an opening / closing door according to claim 1.
A locked member , wherein the locked portion (3) has a first shaft portion (3A) engaged with a lock member (4) and one end of the first shaft portion (3A). A second shaft portion (3B) that is continuously provided in a state of being eccentric to one side in the radial direction with respect to the shaft core, and the second shaft portion (3B) is
Case (40) fixed to the door fixing part (1)
And the lock member (4)
A locked device that is supported so that it cannot rotate when it comes into contact with the device.