JPS5833292Y2 - Panel connection device - Google Patents

Description

[Detailed description of the invention] This invention relates to a connection device for panels in an oven, such as a prefabricated refrigerator, and in particular, it enables repeated connection of prefabricated panels that are installed in a movable manner. .

Generally, this type of coupling device has a locking part consisting of an eccentric cam rotor having an eccentric rotation operation shaft and a hook into which the cam rotor is fitted, and a receiving part such as a locking pin (which engages with the hook). This is widely used.

However, in conventional models of this type, a spring is installed on the eccentric cam rotor side to prevent the hook from rotating in the loosening direction after the panels are connected. As the stress is applied to the spring, the stress exceeds the allowable stress for preventing reverse rotation, which is the original role of the spring (causing bending and permanent deformation,
Due to a decrease in the pulling force due to the loosening of the hooks, there were concerns such as the generation of gaps between panels during long-term use, and there was also the disadvantage of lack of repeatability, and the deformation of the eccentric cam roller. Since there are problems such as damage and breakage, the eccentric cam roller must be made of a high-strength material, which is expensive.

Furthermore, conventional springs used springs made of spring steel, which is a different material from the rollers and hooks, to prevent loosening, so when condensation occurs, rusting and corrosion may occur due to the potential difference between the springs and the rollers and hooks. As a result, there are disadvantages such as a high failure rate, poor airtightness, and a lot of time and effort for processing and assembly.

This invention was made with the intention of solving the above problem, and by providing a spring acting part on the hook side to prevent reversal (thus, it eliminates the drawbacks of the conventional method and makes it possible to use it repeatedly. It is something.

Examples of this invention will be described below with reference to the drawings.

In the figure, reference numeral 1.1' denotes case metal fittings attached to the joint ends of panels A and A' to be joined, which are book case-shaped main bodies 1a and 1a made of rust-proofing material or anti-rust treatment, respectively.
1b, 1c; 1b'1c' and through holes 1d; 1d'.

Of the case hardware 1 and 1' constructed in this way, the - side of the case hardware 1 has front and back plates 1e and i of this case hardware 1.
Bearing 2 (this rotatable O
An eccentric cam rotor 4 with a rotating operation shaft 3 fitted thereon projecting at an eccentric position is supported, and a hook 5 made of synthetic resin or metal is attached to which the eccentric cam rotor 4 is rotatably fitted.

Further, a locking piece 1g for holding the hook 5 in an inoperative position, that is, a storage position, is protruded from the upper part G of the case hardware 1.

The hook portion 5a at the tip of the hook 5 is attached to the front and back plates 1e' of the other case hardware 1'.

The mutually opposing holes O of the recesses 6a and 5b provided at appropriate positions of 1f' are adapted to engage with a locking pin 7 which is crimped.

In the panel connecting device configured as described above, this invention provides a notch 4a on the outer periphery of the eccentric cam rotor 4 on the opposite side to the rotary operation shaft 3 with respect to the center thereof, and also includes a hook into which the eccentric cam rotor 4 is fitted. A linear locking portion 5b protruding toward the center of the fitting hole 5d is provided on a portion of the hook portion side of the fitting hole 5d of No. 5 so as to engage with the notch portion 4a. An arcuate beam portion 8 is formed by providing a long hole 5c whose longitudinal direction is substantially parallel to the locking portion 5d near the locking portion 5b.

In the device of this invention constructed in this way, when the eccentric cam rotor 4 is rotated in the direction of the arrow a, the corner of the notch 4a of the rotor 4 hits the arcuate beam 8 of the hook 5, and the eccentric cam rotor 4 is connected to the hook 5. Since the cam rotor 4 does not rotate idly, the hook 5 is locked as shown by the arrow It falls to the pin side.

Furthermore, when the rotor 4 is rotated, the arcuate beam portion 8 is bent in the direction of the elongated hole.

At this time, the spring action caused by the reaction force R of the arcuate beam 8 creates a frictional force for preventing reverse rotation, but by resisting this force O and further rotating the rotor 4, the notch 4a of the rotor 4 The engagement between the corner and the linear locking portion 5b of the hook 5 is released, and in the state shown in FIG. 4, the hook 5 and the locking pin 7 are engaged by the cam action of the eccentric cam rotor 4. Panels A and A' are concatenated.

Next, when the operating shaft 3 is rotated in the opposite direction, the corner of the notch 4a of the rotor 4 separates from the arc-shaped beam 8 of the hook 5, and the arc-shaped beam 8 is elastically returned to its original position. , returns to the initial state again.

Therefore, according to the coupling device of this invention, since the hook side is provided with a spring acting part to prevent reverse rotation, there is no need to use expensive high-strength material for the eccentric cam rotor as a measure to prevent damage and deformation, and the number of parts is reduced. In addition, since it can be constructed from the same type of metal (roller, hook, case) or synthetic resin (hook only) without using special spring steel springs as in the past, it is resistant to corrosion due to condensation and the system is It can be manufactured at low cost, eliminates the risk of uneasiness during long-term use due to damage to the spring material after the panel is pulled, or a reduction in the pulling force due to deformation Q, and it is easy to attach and detach the locking pin. This can be done repeatedly, and excellent effects can be obtained even when used in prefabricated structures that can be moved and installed.

[Brief explanation of drawings]

The drawings show an embodiment of this invention, and FIG. 1 is a partially cutaway front view showing the state in which the coupling device of this invention is used;
Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, Figs. 3 and 4 are explanatory diagrams showing the operating mode, Fig. 5 is a perspective view of the eccentric cam rotor in this invention, and Fig. 6 is It is a front view showing the structure of the eccentric cam rotor and hook in this invention. In the figure, 3... Rotation operation axis, 4...
・Eccentric cam rotor, 4a...Notch, 5.
...Hook, 5a...Tip hook, 5b...
...Locking part, 5c...Long hole, 5d...
...Fitting hole, 7...Lock pin, 8...
This is an arc-shaped beam.

Claims (1)

[Scope of utility model registration request] The hook consists of an eccentric cam rotor with a rotating operation shaft provided at an eccentric position, and a hook that rotatably fits the eccentric cam rotor on the base. and a circumferential surface on the opposite side to the rotational operation shaft with respect to the center of the eccentric cam rotor (a notch is provided in a part of the tip end hook side of the hook fitting hole into which the eccentric cam rotor is fitted). A linear locking portion protruding toward the center of the fitting hole is formed, and an elongated hole is provided near the locking portion to reduce the spring action of the arc-shaped beam portion and the notch of the eccentric cam rotor. The panel connecting device allows the locking pin and the hook to be attached and detached using frictional means.