JPS642047Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a door latch mechanism, and more specifically, it is installed on the door of furniture, etc., to hold the closed door so that it does not open accidentally, and also to latch and release the door with certainty and to attach and remove it. This invention relates to a latch mechanism that allows easy operation.

The latch mechanism of the present invention has a main body metal fitting 1, an actuating metal fitting 2, and a latch 3 as main components, and the actuating metal fitting 2 is placed between the upper and lower plates 5 and 6 of the main body metal fitting 1 with a length. The latch 3 provided at an appropriate position on the main body metal fitting 1 is connected to the operating metal fitting 2 so that it can be rotated as the operating metal fitting 2 slides, so that the latch 3 can be moved in and out of the main body metal fitting 1. It is designed so that it can be attached to and removed from the latch hole B' in the furniture body.

That is, the main body metal fitting 1 consists of a side wall 4 for mounting on the door, and upper and lower plates 5 and 6, and an operating metal fitting 2 is installed between the upper and lower plates 5 and 6.
An opening 7 is formed near the distal end (right end in the figure) of the side wall 4, and an actuation fitting 2 is formed at the proximal end (left end in FIG. 1).
A latch 9 is formed for attaching a tension spring 8 for restoring the restoration slide, and a latch 3 is rotatably attached to the lower surface of the upper plate 5 at a predetermined position with a pivot 10. A stopper 11 for sliding the actuating metal fitting 2 in the backward direction is bent and erected on the proximal edge of the bottom plate, and a stopper 11 for sliding in the backward direction of the actuating metal fitting 2 is provided at a suitable place, for example, the opening 7 of the side wall 4 at the tip of the lower plate.
A bent vertical edge 12 is formed at a position that substantially faces the door A.
A screw hole 1 is formed in the side wall 4 and is sized to fit tightly into the stile to prevent rattling in the width direction.
3. It is fixed using screws.

Next, the actuation fitting 2 has bent edges 1 on both sides of the upper plate 14.
5 and 16 are formed to hang down, and the lower end surfaces of both bent edges are placed on the lower plate 6 of the main body metal fitting 1, and the base end of the upper plate 14 is fitted between the upper and lower plates 5 and 6 of the main body metal fitting 1. A vertical piece 17 is formed at the proximal end, and this is connected to the tension spring 8 to constantly bias the actuating fitting 2 itself in a pulled state toward the proximal end. Operation piece 1 for sliding against spring 8
8, and a guide groove 19 is cut out in the width direction at a predetermined position of the upper plate 14, and a shaft 20 protruding from the lower surface of the latch 3 is slidably fitted into the groove. As the actuation fitting 2 slides, the latch 3 is rotated about a pivot 10 so that it can be retracted from the main body fitting 1. In addition, a tension spring 8 is fitted onto the outer surface of the tip of the bent edge 15 on the side wall of the main body to fit into the opening 7 of the main body metal fitting 1 and pull the operating metal fitting 2.
A bent ridge 1 is formed at the tip of the main body fitting 1 so that the bulge 21 is automatically fitted into the opening 7 and held.
2 is provided with a leaf spring 22, and the leaf spring 22 constantly presses the bent edge 15 of the actuating metal fitting 2 against the side wall 4 of the main body metal fitting 1, so that when the actuating metal fitting 2 slides and reaches the fixed position, the operation is automatically performed. Specifically, the projecting plate 21 is adapted to fit into the opening 7.

To explain the operation of the latch mechanism with the above configuration, in FIG. To open the door, pull the handle 23 pivoted at a proper position on the main body metal fitting 1 or the door A, and then pull the operating piece 18 of the operating metal fitting 2 connected to the rotating free end of the handle 23 into the tension spring 8. When the operating fitting 2 is slid in the direction of the arrow in the figure against the pressure, the latch 3 rotates about the pivot 10 and the shaft 20 as a point of force, and is housed in the main fitting 1 as shown in FIG. Since the projecting plate 21 provided at the tip of the operating metal fitting 2 is fitted and latched into the opening 7 of the main body metal fitting 1, the operating metal fitting 2 will not slide, that is, the latch 3 will rotate even if the handle 23 is operated. This is not done, and the door A remains open with the latch 3 recessed into the main body metal fitting 1. Conversely, when the door A in the above-mentioned state is closed, the projecting plate 21 of the actuating metal fitting 2 that is fitted and latched to the opening 7 is moved by the protrusion B'' of the furniture body B provided corresponding to the opening 7. At the same time as the door is closed, the plate spring 22 is pressed against its elasticity, and is disengaged from the engagement with the opening 7. When this engagement is released, the actuation fitting 2
The latch 3 slides back to the state shown in FIG. 1 by the elasticity of the tension spring 8, and at this time the latch 3 rotates in the opposite direction to engage the latch hole B' again to maintain the closed state.

The latch mechanism of the present invention as described above links the operation of an operating member such as a handle, the sliding of the operating fitting 2 within the main body fitting 1, which is slidable by the elasticity of the tension spring 8, and the rotation of the latch 3.
In addition, since the latch 3 is engaged with the latch hole B' automatically when the door A is almost closed, the operation is extremely reliable, and there is no possibility that the handle or other operating members will be damaged when the door is opened. Even if you accidentally touch it with your hand or operate it consciously, the sliding of the operating metal fitting 2, that is, the rotation of the latch 3, is reliably prevented and the latch 3 is securely prevented from sliding.
Since the latch 3 is stored in the main body metal fitting 1 and does not protrude outside the door, there is no risk of catching clothes, injuring the human body, or damaging the latch 3 itself.

In addition, in the case of the present proposal, all the constituent members such as the actuating metal fitting 2, latch 3, tension spring 8, leaf spring 22, etc. are attached in advance to the elongated and compact body metal fitting 1 to form a single unit, and this main body metal fitting 1 By fitting and screwing the door A into a predetermined position on the door A, the mechanism can be assembled very easily, and each member can be easily attached to and disassembled from the main body metal fitting 1.

[Brief explanation of the drawing]

Figure 1 is a partial cross-sectional plan view of the door closed state showing an embodiment of the present invention, Figure 2 is a partial cross-sectional plan view of the door open state, and Figure 3 is the main part of the state shown in Figure 1. The front view and FIG. 4 are side views of essential parts of the state shown in FIG. 1. A: Door, B: Furniture body, 1: Body metal fittings, 2: Operating metal fittings, 3: Latch, 7: Opening, 8: Tension spring, 19: Guide groove, 20: Shaft, 21: Projected plate, 2
2: Leaf spring.

Claims (1)

[Scope of utility model registration request] A latch 3 is attached to the main body metal fitting 1 that can be attached to the door.
is pivotally mounted on a pivot 10 so as to be retractable from the main body fitting 1, and the actuating fitting 2 is fitted into the main body fitting so as to be slidable in the longitudinal direction, and in a guide groove 19 formed at a predetermined position of the actuating fitting 2, A shaft 20 provided at a position apart from the pivot shaft 10 of the latch 3 is slidably fitted to the slide of the actuating fitting 2 and the pivot shaft 1.
The rotation of the latch 3 about 0 is interlocked, and the operating metal fitting 2 is elastically biased by a tension spring 8 in the direction in which the latch 3 protrudes, thereby linking it to the main body metal fitting 1. A rotating free end of a handle 23 pivotally connected to the handle 23 is connected to the operating piece 18 of the operating member 2 so that the operating member 2 slides against the tension spring 8 in conjunction with the operation of the handle 23. Furthermore, an opening 7 is formed at a predetermined position of the main body metal fitting 1 to correspond to a latch opening protrusion provided on the furniture body, and a projecting plate 21 is provided on the operating metal fitting 2 to insert the latch 3 into the main body metal fitting 1. The actuating fitting 2 can be fitted into the opening 7 to maintain the inserted state, and the operating fitting 2 is connected to the projecting plate 2 by a leaf spring 22 provided at an appropriate position on the main fitting 1.
A door latch mechanism that is biased in the direction in which 1 and opening 7 fit together.