JPH0324781Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention can be attached to a door with an appropriate thickness, and can be adjusted to suit the thickness by rotating the adjustment lever on the rear side of the door. Regarding earthquake-resistant latches that can be easily adjusted.

[Conventional technology]

Traditionally, earthquake-resistant latches have been installed on the back side of doors. This seismic latch can be installed only when the thickness of the door is constant; if the thickness of the door varies, it can be installed using an earthquake-resistant latch that has adjustment members such as operating rods and spacers manufactured to a predetermined length in advance. I installed the latch each time.

[The problem that the idea aims to solve]

However, the doors of furniture, etc. to which seismic latches are attached come in various thicknesses, and for this reason, there are various seismic latches corresponding to the thicknesses, and the number of types of seismic latch adjustment members increases. In addition, it is expensive to manufacture, and after installation, it is not possible to make fine adjustments according to the thickness of the plate, and the seismic latch cannot be expected to function properly.

[Means to solve the problem]

Therefore, as a result of intensive research in order to solve the above problem, the inventor has developed the present invention by pivoting a latch with a generally L-shaped cross section inside the latch body so that it can swing freely so that it is always open with a spring. The front and rear ends of the operating rod that closes the latch are exposed outside the latch body, and the operating rod is divided into two parts in the middle. The adjustment shaft has a stepped portion that comes into contact with the latch, and the front side thereof is a connecting portion and the rear end is a pressing shaft with an externally threaded portion. The seismic latch is designed so that it can be expanded and contracted by screwing together, and its pressing shaft can be moved back and forth, and its adjustment shaft can be rotated, so it can be attached to a door of an appropriate thickness. Adjustment corresponding to the plate thickness can be easily made by adjusting the rotation of the adjusting shaft on the rear side of the door, and the above-mentioned problem has been solved.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In the latch body 1, the middle part of a latch 2 having a substantially L-shaped cross section is pivotably supported 3, and the latch 2 is configured to be opened at all times by a spring 4 (first (See Figure 2). The latch 2
Specifically, a bifurcated portion 2a is formed on one side of the shaft support 3, into which an adjustment shaft 5 of an operating rod A, which will be described later, is inserted, and on the other side, a bifurcated portion 2a is formed to insert the adjusting shaft 5 of the operating rod A, which will be described later. , a recess 2b is formed in which the large diameter portion 5b of the operating rod A can be accommodated. Further, as an embodiment of the shaft support 3 of the latch 2, it is rotatably provided with a pin. The operating rod A is loosely inserted into the latch body 1.

The operating rod A is divided into two parts in the middle in the longitudinal direction, and the rear side of the operating rod A is connected to the latch 2.
The front side of the operating rod A is exposed to the front side of the latch body 1, and a connecting portion 6a is formed thereon as a pressing rod 6. Formed and adjustable shaft rod 5
and a pressing shaft 6 are screwed together to be expandable and retractable. A large diameter portion 5b is provided on the front side of the stepped portion 5a of the adjustment shaft 5 (on the right side in FIG. 3), and an internally threaded portion 5c is threaded from the end of the large diameter portion 5b. A locking portion 5d is formed at the end (left side in FIG. 3) to which a positive or negative portion of a screwdriver or the like can be locked. This locking portion 5d is not limited to the embodiment as long as it has a shape that can be rotated. Further, an external threaded portion 6b is threaded on the rear end (left side in FIG. 3) of the pressing shaft 6, and a square, polygonal, or semicircular connecting portion 6a that cannot be rotated is provided on the front end. It is formed.
The inner threaded portion 5c of the adjusting shaft 5 and the outer threaded portion 6b of the pressing shaft 6 are screwed together, and by appropriately rotating the adjusting shaft 5, the length of the pressing shaft 6 can be expanded and contracted. It is configured as follows. The pressing shaft rod 6 of the operating rod A is loosely inserted into the boss portion 1a of the latch body 1, and by retracting the operating rod A (rightward in FIG. is pressed and rotated counterclockwise in FIG. 2 to close the latch 2.

B in the figure is an embedded handle, which consists of an embedded housing 7 and a swinging handle 8. The middle of the swinging handle 8 is pivotally supported in the embedded housing 7, and this pivotally supported part 9 is supported in the embedded housing 7. The boundary is formed by a pressing portion 8a and a handle 8b. The swing handle 8 is always biased by a spring so as to be closed (see Fig. 6). Furthermore, an elongated hole 7a is bored on the rear surface of the embedded casing 7 at the position of the pressing portion 8a. The longitudinal direction of this elongated hole 7a is formed so as to be substantially perpendicular to the longitudinal direction of the embedded handle B. By forming the elongated hole 7a, the position of the embedded handle B can be adjusted with respect to the position of the operating rod A.

Reference numeral C denotes a handle, which is composed of a handle-like handle body 10 and a push button 11. The push button 11 is formed so as not to protrude outside from the handle body 10, and a push rod 6 is connected to the tip of the push button 11. Part 6
A recess 11a is formed for insertion and connection of the recess 11a (see FIGS. 8 to 10).

12 is a door of furniture such as a cupboard or chest of drawers, 12a is a latch mounting hole provided in the door 12, 13 is a fixing plate such as a side plate or partition of the furniture, and 14 is a fixing plate 1 of the furniture.
This is the locking protrusion attached to 3.

[Effect]

The seismic latch of the present invention is attached to the rear surface of the door 12 with screws or the like, and at this time, the connecting portion 6a of the pressing shaft lever 6 of the operating lever A is inserted into the latch attachment hole 12a. When the embedded handle B is attached to the door 12 (see FIGS. 5 and 6), its connecting portion 6a is inserted into the elongated hole 7a and set so that it cannot rotate. Then, the operating lever A is expanded and contracted as appropriate by rotating the cutting edge of a tool such as a screwdriver while contacting the locking portion 5d of the adjusting shaft lever 5 of the operating lever A so as to correspond to the plate thickness of the door 12. Adjustment is made so that the distance between the tip of the connecting portion 6a and the back surface of the pressing portion 8a of the swing handle 8 is approximately zero (see solid line in FIG. 6).

By setting in this way, the swing handle 8
When opened (see dotted line in Figure 6), the pressing part 8
Press the operating rod A with the back side of a, and press the step part 5.
By horizontal movement a, the latch 2 is rotated counterclockwise in FIG. 6, the locking state between the latch 2 and the locking protrusion 14 is released, and the door 12 can be opened.

In addition, when the handle C is attached to the door 12 (see Figures 8 and 9), push the connecting part 6a of the handle C to the door 12.
1 into the recess 11a, and set the connecting portion 6a so that it cannot rotate. Then, as in the case of the above-mentioned embedded handle B, the adjustment shaft 5 of the operating lever A is adjusted in rotation according to the plate thickness of the door 12, and the push button 11 of the handle C is pressed. Similarly to the case of the embedded handle B, the door 12 can be opened by releasing the locking state between the latch 2 and the locking protrusion 14. Furthermore, the seismic latch of the present invention can be attached to the door 12 together with a handle or the like (not shown).

[Effect of idea]

In the present invention, a latch 2 having a generally L-shaped cross section is swingably supported in a latch body 1 by a spring 4 so as to be open at all times, and an operating rod A that closes the latch 2 has its front and rear ends. Provided to be exposed outside the latch body 1,
The operating rod A is divided into two parts in the middle, and the rear side of the operating rod A is an adjustment shaft rod 5 having a stepped portion 5a that abuts the latch 2 at the rear portion with an internal threaded portion 5c; The front side thereof is a pressing shaft rod 6 having a connecting portion 6a at the tip and an externally threaded portion 6b at the rear end,
The outer threaded part 6b and the inner threaded part 5c are screwed together to make the latch extensible and retractable, and the pressing shaft 6 is configured to be movable back and forth, and the adjustment shaft 5 is configured to be rotatable, making it an earthquake-resistant latch. By attaching this to the door 12, firstly, it can be easily attached to the door 12 of an appropriate thickness, and secondly, the door 12 can be easily attached to the door 12.
Adjustment corresponding to the plate thickness of the door 12 can be easily made from the rear surface, and thirdly, the structure for adjusting the plate thickness of the seismic latch is simple, and the overall effect can be provided at low cost.

To explain these in detail, as a minimum condition for the seismic latch to open and close reliably, the accuracy of the horizontal movement distance of the operating rod A is essential. However, if the thickness of the door 12 changes, the length of the operating rod A cannot be adjusted, making it difficult to open the door 12, or in extreme cases, making it impossible to open the door 12. There was an inconvenience in that a large number of adjustment members for the seismic latch had to be prepared depending on the thickness of the plate.

However, in the present invention, after installing the door 12 of an appropriate thickness, the operating rod A is inserted from the rear surface of the door 12.
By appropriately rotating the adjusting shaft 5, the screwed portion of the adjustment shaft 5 can be expanded and contracted, and the pressing shaft 6 can be advanced or retreated by an appropriate short distance. 8a or the recess 11a of the handle C, the horizontal distance of the operating rod A can be made highly accurate, and the latch 2 of the seismic latch can be unlocked reliably.

In addition, in the present invention, the pressing shaft 6 is configured to be able to move back and forth, and the adjustment shaft 5 is configured to be rotatable, so that the front side is not rotatable and is neatly attached to a door handle, etc. be able to.

As described above, even if the plate thickness of the door 12 changes, the seismic latch of the present invention can handle it with the same parts, and its installation and adjustment can be done easily. Therefore, one type of seismic latch can be used with a plurality of conventional seismic latch types, and its manufacture and management are extremely simple and can be provided at low cost.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partially cut away perspective view of the present invention, Fig. 2 is a sectional view of Fig. 1, and Fig. 3 is a partially cut away operating rod. Figure 4 is a cross-sectional view of the present invention attached to a door of furniture, Figure 5 is an exploded perspective view of the present invention, an embedded handle, and the door, and Figure 6 is an exploded perspective view of the invention attached to a door with an embedded handle. FIG. 7 is a perspective view of the embedded handle; FIG. 8 is an exploded perspective view of the device, handle, and door; FIG. 9 is a sectional view of the device installed on a door with a handle; FIG. 10 is a perspective view of the handle. DESCRIPTION OF SYMBOLS 1... Latch body, 2... Latch, 3... Pivot support, 4... Spring, A... Operating rod, 5... Adjusting shaft lever, 5a... Step portion, 5c... Internal threaded portion, 6... ...Press shaft rod, 6a...Connection part, 6b...External threaded part.

Claims (1)

[Scope of utility model registration request] A latch having an approximately L-shaped cross section is swingably supported in the latch body so that it is always open with a spring, and the front and rear ends of an operating rod that closes the latch are exposed outside the latch body. The operating rod is divided into two parts in the middle, and the rear side of the operating rod is an adjustment rod with an internal threaded part and a stepped part that abuts the latch at the rear part, and the front side is the connecting part at the tip. The rear end is a pressing shaft with a threaded external thread, and the external thread and the internal thread are screwed together to make it expandable and retractable.The pressing shaft can be moved back and forth, and the adjustment shaft is Earthquake-resistant latches characterized by each structure being rotatable.