JPH0544298Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to an opening/closing stopper structure for a resin case, and in particular, the main case and the lid case are made of synthetic resin, and the lid case opens and closes with respect to the main case. The present invention relates to an opening/closing stopper structure for a resin case suitable for a device in which heavy objects are stored.

[Conventional technology]

Conventionally, there have been various devices in which main components are housed in a main case made of synthetic resin, and heavy objects are housed in a lid case made of synthetic resin and connected to the main case so that it can be opened and closed. Are known.

Figures 4 to 8 show a driving recorder used in automobiles such as large trucks as an example of a conventional device of this type (see Utility Model Application Publication No. 33422/1983). 1 includes a main case 2 which houses a recording mechanism (not shown) for recording speed, mileage, etc.; and a main case 2 which is connected to the main case 2 via a hinge part 3 so as to be openable and closable, and which displays a clock, etc. The main case 2 and the cover case 5 are both integrally molded from synthetic resin. When the lid case 5 is opened approximately 90 degrees forward from the main case 2, its opening movement is regulated by a stopper structure, which will be described later, provided on the hinge portion 3, and the lid case 5 is opened to the rear side of the display mechanism portion 4. Work such as replacing the chart paper 6 that is set is performed.

In such a driving recorder 1, the hinge portion 3 is formed of synthetic resin and is attached to the lower open end of the main case 2 so as to protrude forward, as shown in FIGS. 5 to 8. The cover body 7 is fixed to a rib 8 formed at the open end of the main case 2 with screws 9. When the cover body 7 is fixed, a concave piece 10 formed on the front surface of the cover body 7 is provided protruding from the lower end of the lid case 5 between it and a concave piece on the main case 2 side (not shown). The lid case 5 has a fulcrum portion 12 formed by the concave pieces 10 and 11.
It is designed so that it can be opened and closed around the center of rotation.

Further, a stopper integrally molded with the main case and the lid case is formed at the open end on the main case 2 side and the lower end on the lid case 5 side so as to be located inside the cover body 7. This allows the lid case 5 to be held at the maximum open position.

That is, as shown in FIG. 8, at the open end of the main case 2, two sets of locking pieces 13, each consisting of a pair of opposing walls 13a, 13a, are formed as the stopper and protrude forward. Each locking piece 13 is provided with locking step portions 14, 14 facing each other at predetermined positions on its opposing walls 13a, 13a. Also,
Also on the lower end of the lid case 5, locking pieces 15 and 1 are provided as stoppers at the portions facing the respective locking pieces 13.
5 are provided in a protruding manner, and each locking piece 15 enters between the opposing walls 13a, 13a of each of the locking pieces 13 and slides along the wall surface. A locking step 16 that projects outward is also formed at the tip of each locking piece 15, and when this locking step 16 engages with the locking step 14, The lid case 5 is held at the predetermined open position.

[The problem that the idea attempts to solve]

However, in the conventional driving recorder 1 mentioned above,
As mentioned above, the display mechanism section 4 such as a clock is built into the lid case 5 which opens and closes via the hinge section 3, and this display mechanism section 4 has a considerable weight by itself. If the amount of engagement between the locking pieces 13 and 15 of the case 2 and the lid case 5 that engage with each other is not sufficient, if a slight force is applied to the lid case when the lid case 5 is opened to the maximum, the stopper The problem is that the structure comes off.

In addition, each locking piece 13, 15 as a stopper is integrally molded with the main case 2 and lid case 5.
is made of the same synthetic resin as the main case 2 and the lid case 5, so if a force is applied in a direction different from the opening direction of the lid case 5 when the lid case 5 is opened, the locking pieces 13 and 15 will be twisted. In particular, when the locking piece 13 on the main case 2 side is deformed, the distance between the opposing walls 13a and 13a increases, and the amount of engagement between the locking pieces 13 and 15 further decreases, causing the stopper to become deformed. The problem is that it becomes more likely to come off.

This idea was made in view of the above points,
In a device where the main case and the lid case are made of synthetic resin and a heavy object is stored in the lid case that opens and closes with respect to the main case, it is necessary to sufficiently maintain the open state when the lid case is opened in a specified manner. The purpose of the present invention is to provide a stopper structure for opening and closing a resin case.

[Means for solving the problems]

In order to achieve the above object, the opening/closing stopper structure of a resin case according to the present invention includes a main case made of synthetic resin and containing main components, and a main case that is connected to the main case so as to be openable and closable and contains a heavy object. A resin case comprising a lid case made of a synthetic resin, the main case and the lid case each having a locking piece having a locking step that engages with each other at a predetermined opening position of the lid case. The opening/closing stopper structure is characterized in that the locking step portions of the locking pieces of the main case and the lid case are each formed into a substantially wedge shape.

[Effect]

According to the present invention, the locking step portions of the locking pieces of the main case and the lid case are each formed into a substantially wedge shape, so that the contact area of the locking step portions that engage with each other at the predetermined opening position is increased. The locking stepped portions engage with each other so as to bite into the other.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 3, in which a main case and a lid case are made of synthetic resin, and heavy objects are stored in the lid case that opens and closes with respect to the main case. The configuration of the driving recorder as an example of the device is the same as the conventional one, so the same reference numerals will be used and the explanation thereof will be omitted.

1 and 2 show an embodiment of the present invention, in which a locking piece 13 protruding from the open end of the main case 2 as a stopper on the main case 2 side is connected to a pair of opposing walls 13a. , 13a, and substantially wedge-shaped locking step portions 17, 17 are formed at predetermined positions facing each other on the opposing walls 13a, 13a. Further, the above-mentioned locking piece 13 is provided at the lower end of the lid case 5 as a stopper on the lid case 5 side.
A locking piece 15 is provided protrudingly at a portion corresponding to the
This locking piece 15 is connected to the opposite wall 13 of the locking piece 13.
a, 13a and slides along the wall surface. Approximately wedge-shaped locking step portions 18, 18 are also formed at the tip of the locking piece 15, and the locking step portion 18 on the lid case 5 side and the locking step on the main case 2 side are formed. The portion 17 is wedge-engaged with the lid case 5 at the maximum open position, and the lid case 5
The open state is maintained.

Therefore, in this embodiment, the contact area of the locking step portions 17 and 18 of the locking pieces 13 and 15 that engage with each other is sufficiently large, and the locking step portion 1
Since the comrades 7 and 18 engage with each other so as to bite into the other, even if an external force in the opening direction is applied to the lid case 5 containing a heavy object, which is in the open state at the maximum open position, the above-mentioned wedge The stopper structure composed of the engaging locking pieces 13 and 15 will not easily come off.

Figure 3 shows another embodiment of the present invention.
Locking piece 13 having the above-mentioned wedge-shaped locking step 17
reinforcing ribs 19 connecting the respective locking pieces 13, 13 between the adjacent opposing walls 13a, 13a of the respective locking pieces 13, 13; was formed.

If formed in this way, the rigidity of the locking piece 13 on the main case 2 side will be improved, and even if a force is applied in a direction different from the opening direction of the lid case 5 when the lid case 5 is opened, The locking piece 1 on the lid case 5 side engages with the locking piece 13 without twisting and deforming the locking piece 13 on the main case 2 side.
5 will not come off easily.

In addition, in the above embodiment, the locking piece 13 on the main case 2 side is composed of a pair of opposing walls 13a, 13a, but this is not limited to the above embodiment.
Locking piece 1 on the main case 2 side and lid case 5 side above
3 and 15 may be formed as a locking piece having a substantially wedge-shaped locking step only on one side facing each other.

[Effect of idea]

As described above, in the resin case opening/closing stopper structure according to the present invention, the locking step portions of the locking pieces of the main case and the lid case are each formed in a substantially wedge shape, so that when the lid case is opened in a predetermined manner, the opening/closing stopper structure is in the open state. This has the advantage of being able to sufficiently hold the stopper and providing a stopper that does not easily come off.

[Brief explanation of drawings]

FIG. 1 is a perspective view of essential parts showing an embodiment of the present invention;
FIG. 2 is a plan view showing the main parts of the above embodiment, FIG. 3 is a front view showing the main parts of another embodiment of the present invention, and FIG.
Figure 5 is a front view of the driving recorder, Figure 5 is a side view of the driving recorder, Figure 6 is a plan view showing the hinge part when the driving recorder is opened, Figure 7 is a side sectional view of the hinge part, FIG. 8 is a perspective view illustrating the stopper structure of the hinge portion. 2... Main case, 3... Hinge part, 5... Lid case, 12... Fulcrum part, 13, 15... Locking piece,
13a... Opposing wall, 14, 16, 17, 18...
Locking step portion, 19... reinforcing rib.

Claims (1)

[Scope of claim for utility model registration] A main case made of synthetic resin that houses the main components, and a lid case made of synthetic resin that is connected to the main case so that it can be opened and closed and that contains a heavy object. In the opening/closing stopper structure of the resin case, the main case and the lid case are each provided with a locking piece having a locking step that engages with each other at a predetermined opening position of the lid case, An opening/closing stopper structure for a resin case, characterized in that the locking steps of each locking piece of the case are each formed into a substantially wedge shape.