JPH0315734Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is suitable for use in suitcases for storing documents, catalogs, drawings, books, etc., storage boxes for fire hoses set up on streets, and storage boxes for smoke bombs set near railway tracks. An opening/closing chain that makes it possible to maintain a closed state at all times without accidentally opening a lid body or a pair of mutually separated lid bodies in a camera housing for storing an underwater camera due to contact with a foreign object. This relates to a locking device.

Traditionally, suitcases have been widely used,
A locking device (usually referred to as a snap lock) for a lid or a separate type of opener/closer in a storage box, camera housing, etc. may have one side, for example, as shown in Figures 1 to 3. , a pair of front and rear opening/closing elements 2 (in FIGS. 1 and 2, the left side is the front and the right side is the rear) forming a housing 1 such as a camera housing for accommodating an underwater camera;
A derivative 4 whose cross section is approximately in the shape of an inverted "he" in each of 3,
The support body 5 is fastened with a fastening device such as a rivet or screw a ₁ ,
a ₂ and b, and protrusions i, i are formed on both sides of the horizontal portion h at the uppermost portion of the guide body 4 that slopes upward toward the rear, and these protrusions i,
A support shaft 7 is horizontally suspended and fixed in the middle of a locking body 6 having a U-shaped cross section, which has a claw piece C that engages with the gripper i at the rear end and a concave gripping piece d at the front end. The front ends of a pair of connecting pieces 8, 8 arranged in parallel with each other are rotatably supported at the ends of the shaft 7 that protrude outward from the locking body 6, while the upper ends of the connecting pieces 8, 8 are supported rotatably. - Bulging portions e and e are integrally formed in the downward direction. Further, a pair of connecting pieces 10, 10 are provided, in which an upright piece f is integrally bent and erected at the front end of the support body 5, and a supporting shaft 9 that can be freely engaged and detached from the lower end of the upright piece f is horizontally suspended and fixed at the rear end. At the front end, bulging parts g, g are integrally formed in the vertical direction, and the connecting pieces 8, 8 and the connecting pieces 10, 10 are arranged in parallel and overlapped inside and outside, respectively, and wound around these overlapping parts. The coil spring 1 is stretched between the bulges e, e, g, and g.
1 and 11 are always resiliently biased toward the locking body 6, the support shaft 9 is locked to the lower end of the upright piece f, and the locking body 6 is moved as shown in FIG. Openers 2 and 3
On the other hand, when placed in a horizontal position, the switches 2 and 3 are in a mutually connected and closed state. At this time, the coil springs 11, 11 are under tension (compression) between the bulges e, e, g, g, and prevent the switches 2, 3 from being separated.

However, even when the switches 2 and 3 are closed, foreign objects may come into contact with the front of the locking body 6, and during diving, some parts of the locking body 6, especially the front When the locking body 6 itself rotates clockwise in FIG. , 3 are mutually placed in a free state and released. That is, when the locking body 6 is rotated upward, the opening/closing elements 2 and 3 are easily separated, and the opening/closing elements 2 and 3 are easily separated, especially for opening/closing elements of cases where instruments need to be stored in a sealed manner, such as suitcases and underwater cameras. When used in camera housings, etc.,
Although the locking operation becomes easier, with such a mechanism, there is a high risk that it will be unlocked unexpectedly.
It is hard to escape the regret of not being able to use it safely. Therefore, this invention is designed to prevent the above-mentioned situation where there is a risk of accidental opening, and to make the locking operation easier. The contact piece is attached rotatably, and when the corresponding contact piece is rotated, the lower surface of the corresponding contact piece is brought into contact with and stopped by the upper end surface of the upright piece of the existing support of the other switch, thereby preventing foreign objects from entering the locking body. The object of the present invention is to provide a locking device for an opening/closing element that can maintain the opening/closing element in a closed state by preventing the locking body from opening even if the opening/closing element contacts the opening/closing element.

An embodiment of this invention will be described below with reference to FIGS. 4 and 5. The front of a pair of opening/closing members 21 and 22 such as lids that constitute the casing V and can be separated from each other, (In the drawings, the left side is the front and the right side is the rear.) A guide body 23 with a protrusion fixed to the switch 21; A pair of connection pieces 25, 25 are loosely connected to this support shaft P, and an upright piece k at the front end of the support body 26 on the rear switch 22 side, and a support shaft g that can be freely engaged and detached from this upright piece k. A pair of fixed connecting pieces 27, 27 These pair of connecting pieces 2
Coil springs S, S are interposed between the bulges n, n formed at the rear ends of the connecting pieces 25, 27 and the bulges t, t formed at the front ends of the connecting pieces 25, 25. , S to the overlapping part with the connecting pieces 27, 27.
Since the tensioning point is the same as the conventional mechanism shown in FIGS. 1 to 3, detailed explanation thereof will be omitted.

Then, at the rear end of the rear switch 22, the stopper 28 and the support 26 are sequentially attached to the upper surface of the switch 22 using fasteners j such as rivets or screws.
At the same time, the upright piece y, which is the front end of the stopper body 28 bent and made upright, is formed at approximately the same height as the upright piece k of the support body 26, while the locking body on the front switch 21 side is fixed. The abutment 29 is rotatably mounted on the upper surface of the locking body 24 to a support shaft u such as a stud or screw fixed to the holder 24, and the corresponding contact piece 29 is
When it is rotated 180 degrees, its lower surface can come into contact with the upper end surface of the upright piece k of the support body 26 (see the dashed line in Figure 5). At this time, the upright piece k and the upright piece y of the restraining body 28 may each be able to come into contact with the upper end surfaces thereof.

Although only one locking device is shown in the drawing, it is also possible to set a plurality of locking devices depending on the size of the casing. Reference numerals 30 and 31 are fasteners for fastening the induction body 23 to the switch 21.

Since this device has the above-mentioned configuration, for example, the pair of switches 21 and 22 in the casing V that houses and places an underwater camera (not shown) are brought into close contact with each other, and then the support shaft g is moved to raise the support body 26. After engaging the lower end of the piece k, the locking body 24 and the contact piece 29 are rotated counterclockwise in FIG. 5 against the coil springs S, S to tension the coil springs S, S ( compression)
When the contact piece 29 is placed under the condition and rotated 180 degrees around the spindle u to the chain line position, the abutment piece 29 itself is moved by the respective upright pieces y and k of the stopper 28 and the support 26. It is held in a state where the lowering is prevented by contacting the upper end surface of the After that, for example, the locking body 24 of the housing V for storing an underwater camera that can be carried by a diver who can swim underwater comes into contact with a foreign object such as an underwater rock, a reef, or a sinking object, and the locking body 24 is locked as shown in FIG. body 24
Even when the front side of
Since the lowering is restrained by the upper end surface, the locking body 24 itself remains in a fixed position, so there is no risk that the switches 21 and 22 will be opened unexpectedly, and the closed state is maintained at all times. It remains retained.

According to this invention, a contact piece is rotatably attached to a locking body provided on one side of the lid body and the main body, which are separable from each other, and an opening/closing element such as the lid body, and also facing the opening/closing element. A contact piece is attached to the other switch to prevent it from coming into contact with it when it rotates, so when the pair of switches is kept in a mutually closed state by the locking body, there is no possibility that foreign objects may fall onto the locking body. Compared to conventional locking devices, where there was a risk that the locking body could rotate unexpectedly due to contact or vibration, opening the closed switch, the locking device rotates and supports the contact piece. By abutting and restraining the upper end surface of the upright piece of the body, the switch will not open unexpectedly, and in addition, the contact piece can be rotatably attached to the existing locking body on one switch. Also,
Since this product can be obtained with very little modification by using the existing support as is, it has a simple structure and can be manufactured at low cost. When the locking body comes into contact with a rock, reef, or other foreign object,
Since the camera housing is opened, there is no risk of the underwater camera being submerged in water, and it can be secured to protrusions on the street, inside a car, indoors, etc. while carrying a suitcase containing letters, drawings, etc. This has the practical benefit that the user can use the device with peace of mind, such as when the user's body touches the device, the lid is opened, and there is no fear that letters, drawings, etc. will fall or be scattered.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view of the main parts of a conventional locking device when it is locked, Fig. 2 is a sectional view taken along the - line in Fig. 1, and Fig. 3 is an explanatory diagram of the main parts when the locking device is relaxed. , Figure 4 is a front view of the main parts of the product when it is locked, Figure 5
The figure is a sectional view taken along the line -- in FIG. 4. 21, 22... Opening/closing element, 23... Inductor, 24... Locking body, 25... Connection piece, 26... Support body, 27... Connection piece, 29... Contact piece, k... Upright piece, p, q, u... Support Shaft, s...Coil spring.

Claims (1)

[Scope of utility model registration request] A guide member and a support member are fixed to each of a pair of mutually opposing openable/closable switches, and a connecting piece is rotatably attached to the support shaft of the locking member that is locked to the guide member, while a connecting piece is rotatably attached to the support member. In a locking device for an opening/closing element, a coil spring wound around the overlapping part of a connecting piece with a removable support shaft and the connecting piece is always resiliently biased toward the locking body. A contact piece that overlaps the upper surface of the locking body is rotatably attached to the fixed support shaft, and when the contact piece is rotated backward, the lower surface of the contact piece overlaps the upright piece formed on the support. A locking device for an opening/closing element that is brought into contact with and stopped by the end face.