JPH0438386A - door opening/closing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a door opening/closing device, and in particular to a door that opens and closes in the vertical direction, which allows easy fixation of the principle when opening a front door provided in a space or a housing. related to switchgear.

[Conventional technology]

In conventional spaces or casings that can be opened from the front, doors that open and close in the left and right directions are fixed with a hinge placed next to the door, and doors that open and close in the vertical direction open and close the space. Alternatively, the right side of the worker slides through a groove provided on the front side of the housing wall, or rolls up the door of the shutter structure.

[Problem to be solved by the invention]

As mentioned above, for doors that open and close in the left and right directions, the weight of the door does not greatly affect the opening and closing of the door, but it is necessary to secure an area in which the door can be opened in the space or in the front and near the front of the housing location. However, there is a problem in that when the casing or the like is placed in an inclined state, the door swings and opens.

In addition, for doors that open and close in the vertical direction, it is difficult to lift and hold the door against the gravity of the door when the door is opened, so it is difficult to hold the door on the side of a casing etc. that has a doctrine for when the door is closed. Special construction required. In addition, the shutter structure has the problem that the structure of the door becomes complicated. SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems and to provide the market with a door opening/closing device that is easy to open and close and is capable of keeping the door fixed when the door is opened.

[Means to solve the problem]

In order to solve the above problem, the door opening/closing device of the present invention includes a parallel link whose one end is attached to the inside of the door and the other end is attached to the room wall so that it can rotate in the vertical direction, and the parallel link. A spring was installed between the lower member forming the door near the door and the upper part of the lower member near the room side mounting position.

In addition, there is a parallel link whose one end is attached to the inside of the door and the other end is attached to the room wall so that it can rotate in the vertical direction, and the lower member forming the parallel link rotates at the upper part near the attachment position on the indoor side. a rod having a predetermined length that is screwed into the female thread, and a lower member forming the parallel link in the vicinity of the door including the door and in the female thread; A spring was installed between the fitted rod tips.

[Effect]

According to the above structure, the parallel link equipped with a spring holds the door so that it can be opened and closed freely, and one end of the spring is attached to the upper part of the lower member of the parallel link near the mounting position on the indoor side, so that when the door is closed, the door is securely placed on the indoor side. It also makes it easy to open and close the door, and prevents the opened door from falling due to gravity when the door is open. In addition, since one end of the spring was fixed by a rod fitted with a thread into a female ring which was rotatably fixed to the upper part of the parallel link lower member near the chamber side attachment position, one end of the spring could be fixed by rotating the female ring. The spring force of the spring can be adjusted to an appropriate value depending on the weight of the door equipped with the door opening/closing device and the friction of the rotating part.

〔Example〕

The details of the door opening/closing device according to the present invention will be explained below with reference to the drawings.

FIG. 1 is a schematic structural diagram of the door opening/closing device according to the present invention, FIG. 2 is another schematic structural diagram of the door opening/closing device according to the present invention, and FIG. 3 is a functional explanatory diagram of the door opening/closing device shown in FIG. 2. It is.

FIG. 1 is a sectional view of the casing showing a state in which a plate-shaped door is closed on the front of the casing. In Fig. 1, 1 is a housing;
2 is the door of the housing; 3 is the upper member of the parallel link rotatably attached to the housing l at part a and to the housing door 2 at part b; 4 is the upper member of the parallel link to the housing 1; On the other hand, part 0 is a lower member of the parallel link rotatably attached to the door 2 of the case at part d, 5 is part e of the upper part near part d of the case, and lower member 4 These springs are attached to members provided at the F section near the C section. In the above structure, the housing 1, the housing door 2, the upper member 3, and the lower member 4 form a parallel link, and the spring force of the spring 5 acts to attract the doctrine toward the upper side of the housing. There is.

Next, FIG. 2 shows another structure of the door opening/closing device according to the present invention. FIG. 2 is a sectional view of the casing showing a state in which the plate-shaped door is closed on the front surface of the casing, similar to FIG. 1. In Figure 2, 1 is a housing, 2 is a door of the housing, and 3 is a parallel link rotatably fixed at part a of the housing 1 and part b of the housing door 2, respectively. The upper member 4 is a lower member of a parallel link which is rotatably fixed at a part 0 with respect to the case l and a part d with respect to the door 2 of the case, respectively. The door 2, the upper member 3, and the lower member 4 form a parallel link.

Further, 6 is a male threaded rod, one end of which is fixed by a nut 8 to a bent part of an L-shaped member 7 rotatably attached to the housing wall at a part 7a parallel to the wall, One end of a spring 5 is fixed to the other end, and the spring attachment provided near the C portion of the lower member 4 on the opposite side of the spring is attached to a hole in the member 9.

Therefore, the loft 6 is fixed by the spring force of the spring 5, the elbow member 7, and the napft 8.

In the above structure, by rotating the napht 8, the rod 6 can be moved and the spring force of the spring 5 can be changed.

That is, for example, when the weight of the door 2 is large and the spring force is too weak, rotating the nut 8 to the right in the figure will cause the loft 6 to have a male thread and fit into the nut 8. Therefore, the rod 6 moves to the right. In addition, since the spring 5 is connected to the opposite side of the loft 6 from the fitting part with the napht 8, the distance between the rod 6 and the spring 5 is reduced and the spring 5 is pulled. However, the spring force of the spring 5 becomes stronger.

Further, when the weight of the door 2 is small and the spring force is too strong, the nut 8 is rotated to the left. When the nut 8 is rotated to the left, the rod 6 moves in a direction that increases the length of the rod 6, contrary to the above, and therefore the spring force of the spring 5 becomes weaker.

Next, the functions of the door opening/closing device based on the present invention in the above structure will be explained with reference to FIG.

Since the functions of the structure shown in FIG. 1 described above are the same as those shown in FIG. 2 with some exceptions, the functions of the structure shown in FIG. 2 will be explained as a representative.

Figure 3 is the same as Figure 2, l is the housing, 2 is the door of the housing,
Reference numeral 3 denotes an upper member of the parallel link that is rotatably attached to the casing 1 and the door 2 of the casing, and 4 is a lower member that is rotatably attached to the casing 1 and the door 2 of the casing. The housing 1, the housing door 2, the upper member 3, and the lower member 4 form a parallel link. Further, 5 is a spring, and 6 is a rod whose length can be adjusted.

Further, as shown in FIG. 2, the loft 6 is fixed at a portion 7a to an L-shaped member 7 which is rotatably attached to the housing by means of a napft 8.

3(A) is a diagram with the door 2 closed, similar to FIG. 2 described above, and (B) is a diagram with the door half open, (
C) shows the view with the door fully open.

When the door is pulled up from the state shown in Figure 3 (A), (B
) As shown in the figure, the door 2 is pulled up vertically by the parallel link constituted by the casing 1, the casing door 2, the upper member 3, and the lower member 4, while resisting the gravity of the doctrine by the spring force of the spring 5. It will be done. Further, as shown in FIG. 2, the rod 6 to which the spring 5 is attached is fixed to the housing by a member 7 having a rotatable structure. Rotate in the section.

When the door is further pulled up, the parallel link formed by the upper member 3 and lower member 4 and the spring force of the spring 5 prevent the doctrine from falling, as shown in Figure (C).
kept open.

When the spring force is weak, as mentioned above in Fig. 2, the nut 8
The door can be rotated to move the loft 6 places, thereby increasing the spring force and preventing the door from falling.

The structure described in FIG. 1 is the same as the mechanism shown in FIG. 3 except that the strength of the spring cannot be adjusted.

In addition, in the above explanation, the opening and closing of the door of the housing was explained, but even if the door is a door of an architectural structure, the present invention can be applied by adapting the dimensional strength of element members such as parallel links and springs to the structure. Can be applied.

In addition, the spring force can be adjusted accurately by selecting the rod, nut, and screw pinch, and the spring force adjustment method and rod length adjustment method can be implemented by other means based on the present invention. can.

〔Effect of the invention〕

According to the present invention described above, the door is held openable and closable by the parallel link equipped with a spring, and one end of the spring is attached to the upper part of the lower member of the parallel link near the mounting position on the indoor side, so that the door is securely closed when the door is closed. Closely attached to the room side, and
To easily open and close a door and to prevent the opened door from falling due to gravity when the door is open. Even if the door itself is made of a heavy material such as marble, by setting the spring force to an appropriate strength, there will be no inconvenience in opening and closing the door. Furthermore, as shown in the third diagram, even when the door is open,
Compared to a door that swings left and right, the front air space required to open the door is narrower, so it is easy to use regardless of the range of use. Also,
One end of the spring is fixed by a rod that is rotatably fixed to the upper part of the lower member of the parallel link near the mounting position on the indoor side and is fitted with a female thread, so that by rotating the female thread, the door opening/closing device is fixed. An excellent effect can be obtained in that the spring force of the spring can be adjusted to an appropriate value in response to the weight of the door equipped with the door and the friction of the rotating part.

[Brief explanation of the drawing]

FIG. 1 is a schematic structural diagram of an embodiment of the door opening/closing device according to the present invention, FIG. 2 is a schematic structural diagram of another embodiment of the door opening/closing device according to the present invention, and FIG. 3 is a schematic structural diagram of another embodiment of the door opening/closing device according to the present invention. FIG. 2 is a functional explanatory diagram of the device. 1... Housing, 2... Door, 3... Upper member, 4... Lower member, 5... Spring, 6 ...Rod, 7...L-shaped member, 8...S-7, 9...Spring mounting member. Applicant Kojima Co., Ltd. Agent Patent Attorney Yoshimi Saigo Figure 3 (A)

Claims (1)

[Claims] 1. A parallel link whose one end is attached to the inside of the door and the other end is attached to the room wall so that it can rotate in the vertical direction, and the door of the lower member forming the parallel link. A door opening/closing device characterized in that a spring is installed between a portion near the door and an upper portion of the lower member near a mounting position on a room side. 2. A parallel link whose one end is attached to the inside of the door and the other end is attached to the room wall so that it can rotate in the vertical direction, and the lower member forming the parallel link rotates at the upper part near the attachment position on the room side. a rod having a predetermined length that is fitted to the female thread by a screw, and a rod having a predetermined length that is fitted to the female thread near the door including the door of the lower member forming the parallel link; A door opening/closing device characterized by a spring installed between the tip of the rod and the tip of the rod.