JPH0712573Y2 - Latch device for walk-in type underfloor storage - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a latch device for use in a walk-in type underfloor storage that a person goes in and out to put a storage item in and out.

[Prior Art] In recent years, it has been proposed to install a large-scale underground storage under the floor of the kitchen in order to effectively use the land.

This walk-in type underfloor storage latch device, like the conventional small underfloor storage latch device that does not allow people to enter and exit, is designed so that the door is properly positioned at the closed position so as not to rise above the floor level and obstruct walking. However, in addition to this, as a problem peculiar to the walk-in type, even if the door is accidentally closed and locked from the outside when a person is inside the underfloor storage, It is required that the person trapped inside can unlock the door and escape by himself.

[Problems to be solved by the invention] Therefore, an object of the present invention is to provide a walk-in type underfloor storage that can accurately hold a door in a closed position and can be unlocked by a person trapped in a refrigerator by himself. An object of the present invention is to provide a storage latch device.

[Means for Solving the Problem] The walk-in type underfloor storage latch device according to the present invention will be described below with reference to the accompanying drawings. The lid plate 6 having the screw hole 4 and the rotation operation portion 5 provided on the upper surface is screwed into the screw hole 4.

The rotor 12 is rotatably supported on the bottom wall plate portion 7 directly below the screw hole 4, and the handle insertion recess 8 is provided on the upper surface of the rotor 12.
A cam projection (11) is provided on the lower surface of the rotor (12) at an eccentric position. A hook plate 14 is fixedly arranged on the upper surface side of the rotor 12, and a through hole 13 matching the handle insertion recess 8 is provided in the hook plate 14.

A hook plate when rotated to the outside handle 16 which is inserted into the handle insertion recess 8 through the screw hole 4 and the through hole 13.
Side projections (15) that engage with the rear surfaces of the hole edges of the through holes (14) are provided. The latch body 20 is housed in the fixed case 2, and the tip portion 19 of the latch body 20 is projected from the opening 18 of the side wall plate portion 17 of the fixed case 2.

The interlocking plate 22 is provided with a passive groove hole 21 with which the cam projection 11 engages, and the interlocking plate 22 connected to the base end of the latch body 20 is guided to the fixed case 2 so as to linearly slide. A spring 23 is inserted between the interlocking plate 22 and the latch body 20 to urge the latch body 20 to slide in the protruding direction. The attitude holding spring 24 is inserted between the side wall plate portion 45 of the fixed case 2 and the rotor 12 to hold the rotor 12 in the unlocked position or the locked position.

A support plate 49 is fixed to the bottom wall plate portion 7 of the fixed case 2 from the back side, and a shaft hole 48 is provided in the support plate 49 on the same axis as the handle insertion recess 8 of the rotor 12. Shaft bar 50 of the inside handle 52
Is rotatably fitted into the shaft hole 48, and the lower end portion of the cam projection 11 is engaged with the drive groove portion 51 provided in the upper end portion of the shaft rod 50.

[Operation] When the door 1 is closed and locked as shown in Figs. 1 and 9, the outside handle 16 is removed from the fixed case 2,
The screw hole 4 of the upper surface plate 3 of the fixed case 2 is closed by a cover plate 6.

In order to unlock the door 1 from the outside, first, a screwdriver, a coin, or the like is inserted into the rotation operation portion 5 of the lid plate 6 to rotate the lid plate 6, and the lid plate 6 is removed from the screw hole 4.

Next, the tip of the outside handle 16 is inserted from the screw hole 4, and is inserted into the handle insertion recess 8 of the rotor 12 through the through hole 13 of the hook plate 14. Here, when the outside handle 16 is rotated in a predetermined direction, the inside surface 8a of the handle insertion recess 8 is
Since the side protrusion 15 of the outside handle 16 pushes the
Rotates integrally with the outside handle 16 of the refrigerator. Further, the inside handle 52 is also driven by the cam projection 11 that pushes the inner surface of the drive groove 51, and integrally rotates in the same direction.

The rotation of the rotor 12 causes the eccentric cam protrusion 11 of the rotor 12 to rotate.
Pushes the inner surface of the passive slot 21 of the interlocking plate 22,
11 slides backward and drives the latch body 20 by pulling it toward the fixed case 2 against the bias of the spring 23.

As a result, the tip end of the latch body 20 comes out of the receiving portion 33 on the fixed frame member 32 side of the underfloor storage, so that the locking of the door 1 to the fixed frame member 32 is released. At this stage, since the side protrusion 15 of the outside handle 16 is in a position to engage with the lower surface of the hole edge portion of the through hole 13 of the hook plate 14, by pulling the outside handle 16, the door 1 is hinged on the other side. Open rotation about the axis.

Next, when the outer handle 16 is reversely rotated to integrally rotate the rotor 12 in reverse, the side protrusions 15 of the outer handle 16 are aligned with the through holes 13 of the hook plate 14 and can be pulled out from the through holes 13. Come to position.

By the reverse rotation of the rotor 12, the cam projection 11 pushes the inner surface of the passive groove hole 21 of the interlocking plate 22, so that the interlocking plate 22 is driven forward, and the tip end portion 19 of the latch body 20 is opened at the side surface opening 18 of the fixed case 2.
Stick out from.

When the door 1 is rotated downward by its own weight from the open position to close it, the ratchet body 20 is temporarily retracted by the tip portion 19 abutting the upper surface edge portion of the fixed frame member 32, and the tip portion 19 is received by the receiving portion 33. When the door 1 is completely closed to the facing position, the spring 23
The door 1 is moved forward again by the urging of the door and engages with the receiving portion 33 to lock the door 1 with respect to the storage case main body.

If the door 1 is accidentally closed from the outside while inside the underfloor storage, the trapped person is the handle inside the storage.
Turn 52 in the unlocking direction.

Since the inner surface of the drive groove 51 pushes the cam projection 11 by the rotation operation of the inside handle 52, the interlocking plate 22 in which the inner surface of the passive groove hole 21 is pushed by the cam projection 11 is rotated by the outside handle 16 to the rotor 12. As in the case of turning, the latch body 20 slides backward for a predetermined stroke, and the latch body 20 is pulled into the fixed case 2 side and driven.

The door 1 unlocked by detaching the tip portion 19 of the latch body 20 from the receiving portion 33 of the fixed frame member 32 is released from the inside of the refrigerator by pushing it up manually.

[Embodiment] In the illustrated embodiment, the flat surface portions 9 and 10 are provided on the circumferential surface of the rotor 12 at regular angular intervals, and the posture maintaining spring 24 constituted by a compression coil spring has one end portion having the flat surface portion. 9 or the flat surface portion 10 to engage the rotor 12 with the latch body.
It is held in the unlocked position where 20 is retracted or the locked position where the latch body 20 is projected.

The hook plate 14 has the bent plate portions 25 and 26 at both ends fixed to the bottom wall plate portion 7 of the fixed case 2 by screws 42, and the rotor 12 has the hook plate.
It is rotatably accommodated in the cylindrical intermediate portion 27 of 14, and the through hole 13
Is provided on the upper surface plate portion of the cylindrical intermediate portion 27.

The latch body 20 is slidably inserted into an intermediate bent up portion of a guide plate 34 in which bent plate portions at both ends are fixed to the bottom wall plate portion 7 with screws 44. A spring accommodating recess is provided on the lower surface of the latch body 20.
28 is provided in the length direction, and the upward plate portion 30 of the distal end of the interlocking plate 22 is inserted into the spring accommodating recess portion 28 so that the base end wall portion of the latch body 20.
It is engaged with 29.

The base end of the spring 23, which is a compression coil spring, is attached to the upward plate.
30 against the bottom of the latch body 20 and the cam slope 31
Has been formed. As shown in FIG. 8, the interlocking plate 22 is slidably guided by the pair of cut-and-raised parts 35.36 of the bottom wall plate part 7, and the spring accommodating case 37 is fixed to the upper surface side of the base end part of the interlocking plate 22. The case 24 accommodates the spring 24.

The rotation operating portion 5 of the cover plate 6 is formed of a minus groove,
The outer peripheral flange portion 39 of the cover plate 6 abuts on the peripheral edge step portion 38 of the screw hole 4. As shown in FIG. 7, the handle insertion recess 8 of the rotor 12 and the through hole 13 of the hooking plate 14 have a central round hole into which the round bar 40 of the handle 16 is inserted, and a pair of holes provided on the diameter thereof. And the cutouts of the
Sixteen side projections 15 are inserted.

At the tip of the round bar 40, a protrusion 46 is provided which comes into contact with the bottom surface of the handle insertion recess 8 to align the side protrusion 15 with the notch. At the lower end of the shaft rod 50 of the inside handle 52, there is provided a split groove 54 into which the base end of the L-shaped bent handle main body 53 is inserted. Is stuck to.

At the middle bent and raised portion 57 of the support plate 49, the retaining collar 56 of the shaft rod 50 is provided.
And the support plate 49 has the upper surface of the collar portion 56 on the back plate 58 of the door 8.
Is fixed to the bottom wall plate portion 7 of the fixed case 2 with a screw 47 in a state of being in contact with.

As shown in FIG. 8, the passive groove holes 21 of the interlocking plate 22 are provided with two arcuate groove holes and transverse straight groove holes. Correspondingly, two cam projections 11 are also provided. Has been. The cam projection 11 is driven and fixed in parallel with the receiving hole 59 on the lower surface of the rotor 12, and projects into the through hole 60 of the bottom wall plate portion 7 of the fixed case 2. The upper end of the shaft rod 50 of the inside handle 52 has the through hole 60.
Has been fitted into.

[Effects of the Invention] As described above, in the walk-in type underfloor storage latch device of the present invention, the door 1 is accurately held in the closed position by the latch body 20 that engages with the receiving portion 33 of the fixed frame member 32. Therefore, the door 1 does not float above the floor level at all, and the outside handle 16 for driving the latch body 20 via the interlocking plate 22 and the rotor 12 has the upper plate 3 of the fixed case 2 after the door is locked. Of the rotor 12 through the screw hole 4 of the
Since it is closed by the lid plate 6, there is no unnecessary unevenness on the upper surface side of the door 1, and it can be safely used without impairing walking or the like.

Further, in the walk-in type underfloor storage latch device of the present invention, when the handle 52 inside the cabinet is rotated, the inner surface of the drive groove portion 51 of the shaft rod 50 pushes the cam projection 11 of the rotor 12, and the cam projection 11 is interlocked. Since the inner surface of the passive groove hole 21 of the plate 22 is pushed, the latch body 20 is pulled into the fixed case 2 side and driven, and the tip end portion 19 of the latch body 20 is separated from the receiving portion 33 of the fixed frame member 32.
Those trapped in the underfloor storage can immediately escape by themselves.

[Brief description of drawings]

FIG. 1 is a front view of a walk-in type underfloor storage container latching device according to an embodiment of the present invention with an outside handle removed, and FIG. 2 is a rear view of the latching device. FIG. 4 is a plan view of the latch device, FIG. 4 is a bottom view of the latch device, FIG. 5 is a left side view of the latch device, and FIG. 6 is a right side view of the latch device. is there. FIG. 7 is a sectional view taken along the line AA of FIG. 1, and FIG.
9 is a sectional view taken along the line BB of FIG. 9, FIG. 9 is a sectional view taken along the line CC of FIG. 1, FIG. 10 is a sectional view taken along the line DD of FIG. 3, and FIG. It is a longitudinal cross-sectional view of a state in which the outer handle is inserted. 1 ... Door, 2 ... Fixed case, 3 ... Top plate, 4 ... Screw hole, 5 ... Rotating operation part, 6 ... Lid plate, 7 ... Bottom wall plate part, 8 ... Handle insertion Recessed recess, 8a …… Inside surface of recess, 9,
10 …… Spring receiving flat surface part, 11 …… Cam projection, 12 …… Rotor, 13 …… Through hole, 14 …… Hook plate, 15 …… Side projection, 16…
… Handle outside the cabinet, 17 …… side wall plate, 18 …… opening, 19…
… Latch body tip, 20 …… Latch body, 21 …… Passive slot, 22 …… Interlocking plate, 23 …… Latch body biasing spring, 24…
… Rotor posture holding springs, 25, 26 …… Bending plate, 27
...... Cylindrical middle part, 28 ...... Spring accommodating concave part, 29 ...... Base end wall part, 30 ...... Tip upward plate part, 31 ...... Cam slope, 32 ...... Fixing frame member, 33 ...... Reception part, 34 ...... Guide plate, 35,36 …… Cut and raise part, 37 …… Spring storage case, 38 …… Peripheral step part,
39 …… Outer collar part, 40 …… Round bar part, 41 …… Opening edge surface, 42…
… Screws, 43 …… Connecting screws, 44 …… Screws, 45 …… Side wall plate, 46 …… Positioning protrusions, 47 …… Fixing screws, 48…
… Shaft hole, 49… Support plate, 50… Shaft rod, 51… Drive groove,
52 …… Inside cabinet handle, 53 …… Handle body, 54 …… Split groove, 55 …… Cross pin, 56 …… Detachment collar part, 57 …… Intermediate bending raised part, 58 …… Back plate, 59… … Receiving hole, 60… Through hole

Claims (1)

[Scope of utility model registration request] 1. A fixed case 2 embedded and fixed in a door 1.
A lid plate 6 that is screwed into a screw hole 4 of an upper surface plate 3 of the fixed case 2 and has a rotating operation portion 5 on the upper surface; and a rotatably supported by a bottom wall plate portion 7 immediately below the screw hole 4, and an upper surface. A rotor 12 having a handle insertion recess 8 on its lower surface and a cam projection 11 on the lower surface at an eccentric position; and a hook plate fixed to the upper surface of the rotor 12 and having a through hole 13 matching the handle insertion recess 8. 14; the outside of the cabinet in which the side projection 15 engages with the rear surface of the hole edge portion of the through hole 13 of the hooking plate 14 when inserted into the handle insertion recess 8 through the screw hole 4 and the through hole 13 and rotated. Handle 16 and fixed case 2
The latch body 20 housed in the fixed case 2 so that the tip portion 19 projects from the opening 18 of the side wall plate portion 17; and is connected to the base end portion of the latch body 20 guided by the fixed case 2 so as to linearly slide. And the interlocking plate provided with the passive groove hole 21 with which the cam projection 11 is engaged.
22; inserted between the interlocking plate 22 and the latch body 20,
An urging spring 23 that urges 20 to slide in the protruding direction; an attitude holding spring 24 that is inserted between the side wall plate portion 45 of the fixed case 2 and the rotor 12 and holds the rotor 12 in the unlocked position or the locked position. When;
A support plate 49 fixed to the bottom wall plate portion 7 of the fixed case 2 from the back side and provided with a shaft hole 48 on the same axis as the handle insertion recess 8 of the rotor 12; and a shaft rod 50 rotated in the shaft hole 48. Drive groove portion 51 that is fitted so that the lower end portion of the cam projection 11 engages with the upper end portion.
A walk-in type underfloor storage cabinet latch device consisting of a handle 52 inside the cabinet.