JPS6348769Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an opening limit mechanism for an opening/closing door.

For example, various means have been proposed and implemented in the past in order to limit the opening degree of the opening/closing door in a housing, etc., and a typical opening limiting mechanism is one that limits the opening degree of the opening/closing door between the housing and the door. There are those that are connected by chains, strings, or bands of a predetermined length, and those that are similarly connected using plates, stays, etc.

However, although the former mechanism has a simple structure, it has drawbacks in terms of strength and its use is limited to lightweight opening/closing doors. Between the housing 1 and the opening/closing door 2, which are mutually pivotally supported on one side, a stay 3 with a guide groove 4 is pivotally supported at one end with a pin 5, and the stay 3 with a guide groove 4 is supported on the other end. A pin 6 is inserted into and supported by the guide groove 4, and the guide groove 4 is slid along the pin 6. In this case, the disadvantage in terms of strength as in the former case can be overcome, but Stay 3
Because it is located in the opening, it not only obstructs the work of assembling parts into the housing, but also causes the stay 3 to be drawn into the housing 1 or the opening/closing door 2 when the opening/closing door 2 is closed. However, there were inconveniences such as a reduction in storage space.

In view of these conventional drawbacks, this invention aims to provide an opening limiting mechanism that can operate in a narrow space and has great strength. Examples of this invention will be described below. This will be explained in detail with reference to FIGS. 2 to 6.

2 to 4 show a first embodiment, which includes a housing 11 having a bent edge 12 around a front opening, and an opening/closing door that closes this front opening. 13 is pivotally supported on one side by a hinge 15 so as to be freely openable and closable, and the base end piece 17 and the distal end piece 18 having a stopper 19 protruding from the end are connected to the pivot 2.
A hinge member 16 is provided, which is bent freely by the angle 0, and the proximal end piece 17 of the hinge member 16 is attached to the bent edge 14 of the opening/closing door 13, and the lower end of the stopper 19 is attached to the bent edge 12 of the housing 11. The stopper 1 is inserted into the inside of the housing 11, and the stopper 1 is placed on the inner bottom surface of the housing 11.
A guide plate 21 for guiding and regulating the lower end of the stopper 19 is protruded, and when the opening/closing door 13 is opened with respect to the housing 11, the lower end of the stopper 19 is guided in contact with the guide plate 21, and the pivot 20 is guided. The door is gradually bent toward the center and pulled out, and when it reaches a predetermined opening degree, the lower end of this stopper 19 abuts against the inner surface of the bent edge 12 on the front of the casing and is restrained, restraining the door from opening any further. When closing the door, as the door rotates in the closing direction around the hinge 15, the hinge member 16 also rotates, and the stopper 19 first contacts the inner wall of the housing 11 and slides on the inner wall surface. In this way, contrary to the above, the door is gradually pushed open, and when the door is closed, it returns to its original position. The operating locus of the stopper 19 during this opening/closing is shown in the third section.
This is indicated by arrows A (opening operation) and B (closing operation) in the figure.

FIG. 4 shows the arrangement of each element in the closed state.

5 and 6 show a second embodiment, in which the lower end of the stopper 19 is restrained both when opening and closing, in place of the guide plate 21 in the first embodiment. The guide plate 22 has a groove 23 for guiding the guide plate 22, and can be operated in the same manner.

Furthermore, regarding the shape of the guide plates 21 and 22, it is possible to adopt various shapes other than those in each embodiment, and when opening and closing the opening/closing door 13, the stopper 19 of the hinge member 16 can be centered on the pivot 20. It may have any shape as long as it can be guided to bend or push open, and is not particularly limited to that shape. Furthermore, the bent edge 12 that restrains the stopper 19 when it reaches a predetermined opening degree does not necessarily have to be formed as in each embodiment, and the bent edge 12 may be formed only in a corresponding portion. Alternatively, in the case of the first embodiment, a bent edge is integrally formed on the front end side of the guide plate 21, or similarly in the case of the second embodiment, a bent edge is integrally formed on the front end of the groove 23 of the guide plate 22. By forming this, the stopper 19 can be restrained without any trouble. Note that the hinge member 16 may be attached not only at the lower part near the pivot portion as in the embodiment, but also at the upper part.

As described in detail above, according to this invention, in a structure in which the casing and the opening/closing door are pivotally supported so that they can be opened and closed, a bendable hinge member having a stopper at the distal end is used, and the proximal end of the hinge member is It is attached to the opening/closing door on the side, the stopper on the distal end side is guided in a flexible manner by a guide plate provided inside the casing, and a bent edge is arranged to restrain the stopper when it reaches a predetermined opening degree. Not only can the degree of opening of the door be restricted, but since the hinge member is operated by bending, the amount of space occupied in the closed and open positions is small, and the amount of space inside the housing can be reduced. It does not get in the way of work when opened,
Moreover, although the hinge member can bend freely, it has sufficient strength because it is a rigid body as a whole, and has various practical effects such as being simple in structure and can be implemented easily and inexpensively.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a conventional opening limiting mechanism, Fig. 2 is a perspective view of main parts showing a first embodiment of the opening limiting mechanism according to this invention, and Figs. and FIG. 5 is an enlarged plan sectional view of the essential parts showing the second embodiment, and FIG. 6 is a perspective view of the same guide plate. 11... Housing, 12... Bent edge, 13... Opening/closing door, 1
4...Bent edge, 15...Hinge, 16...Hinge member, 17
... Base end piece, 18... Tip piece, 16... Stopper, 20
...Axis, 21, 22...Guidance board.

Claims (1)

[Scope of utility model registration request] A casing 11 with a bent edge 12 formed at the front opening.
and a structure in which the opening/closing door 13 is pivotally supported so as to be freely openable/closing, the other end of the base end piece 17 having one end engaged with the end of the opening/closing door 13, and the distal end piece having a stopper 19 protruding from one end. Using a hinge member 16 which is formed such that the other end of the stopper 18 can be freely bent by a pivot 20, the protruding part of the stopper 19 is inserted into the inside of the bent edge 12, and the protruding part of the stopper 19 is inserted into the inner surface of the opening of the casing 11. An opening/closing door opening degree limiting mechanism in which the operating range of the stopper 19 is restricted by the formed guide member 21 and the bent edge 12 so that the opening range of the opening/closing door 13 falls within a predetermined angle range.