JPS6112920Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an opening/closing device for a lid, and particularly aims to smoothly open and close the lid.

Conventionally, in the case where a lid body is provided in the opening of a mounting body so that the lower part is pivoted by a support shaft via an opening/closing spring member and the upper part is engaged and detached by a clamping means, the lid body can be opened and closed freely.The lid body is opened by operating the clamping means. In this case, the lid is pivoted forward by the spring force of the opening/closing spring member. At this time, if the spring force of the opening/closing spring member is strong, there is a risk that the lid will collide with the mounting body and be damaged, so it is necessary to provide a separate buffer member on the lid or the mounting body. Furthermore, if the spring force of the opening/closing spring member is weak, there is a possibility that the lid will not open even if the clamping means is operated.

Therefore, the present invention provides a lid body which is pivotably supported in the opening of the mounting body by a support shaft via an opening/closing spring member at the lower part and whose upper part is engaged and disengaged by a clamping means, in which the lid body is opened and closed. At the same time, the opening/closing spring member is abutted against and locked to the mounting body via the leg piece, and the above-mentioned conventional drawbacks are solved with a simple structure.

A case where the present invention is applied to a vacuum cleaner will be described below.

Reference numeral 1 denotes a main body case which has a pair of wheels 2, 2 on both sides of the lower part and a handle 3 formed on the upper part, and inside the case, a fan motor and a cord reel (both not shown) are stored in upper and lower compartments. There is. Reference numeral 4 denotes a dust case equipped with a handle 5 on the upper part and a flexible wheel 6 on the bottom surface, and the case is detachably connected to the front part of the main body case 1 by means of a lower engaging part 7 and an upper clamping means 8. Reference numeral 9 denotes a lid body in which an air intake port 10 is formed, and the lid body is provided with an airtight gasket 11 on the inner periphery, and the lower part thereof has coils on both sides of the lower part of the filter attachment opening 12 formed on the front surface of the dust case 4. It is pivotably supported by a support shaft 14 into which a shaped opening/closing spring member 13 is inserted so as to be freely openable and closable.

Both ends of the support shaft 14 are supported by screwed support fittings 15, 15, and the support shaft 14 is
The leg piece 16 at one end of the opening/closing spring member 13 attached to the middle part of the opening/closing spring member 13 engages with the front surface of the dust case 4, and the leg piece 17 at the other end engages with a rib 18 provided on the inner surface of the front wall of the lid body 9. are doing. Further, the lower end surface 1 of the lid body 9
9 is formed with a notch 20 through which one end leg piece 16 of the opening/closing spring member 13 faces, and a protruding rib 22 is provided on the lower front surface of the filter mounting opening 12 with which the lower front edge 21 of the lid comes into contact as appropriate. is forming.

Reference numeral 23 denotes an inlet gasket for the inlet port 10, on which an annular airtight flange 24 and a valve body 25 are integrally formed. Further, a clamp 28 is provided at the upper part of the lid body 9 and is urged upwardly by a spring 26 and protrudes and retracts from the through hole 27, and at the front end of the upper part of the dust case 4, a locking part 29 of the clamp 28 and the locking part 29 of the clamp 28 are provided. A clamp opening push button 31 is provided above the stop portion and is biased clockwise by a spring 30, and furthermore, at the tip of the clamp 28, a force is applied to push the lid 9 forward by pressing the push button 31. An inclined surface 32 is formed.

Reference numeral 33 denotes a paper bag-like bag filter that is detachably housed inside the dust case 4, and the bag opening 34 of the filter is a locking hole 3 provided on the inner surface side of the lid 9.
5, and the upper end is held by a locking/disengaging device 36 provided on the upper part of the inner surface of the dust case 4, and is pressed into contact with the airtight collar 25 of the intake port gasket 23.

Further, the rear opening of the dust case 4 is closed by a removable filter device (not shown), and the locking/disengaging device 36 is configured to operate in conjunction with the attachment/detachment operation of the filter device.

Next, the state of use will be explained.

First, when the clamp release push button 31 is pressed, the clamp 28 provided on the lid body 9 moves downward against the spring force of the spring 26, and the tip inclined surface 3
When the clamp 28 is released from the locking portion 29, the lid body 9 is opened forward using the support shaft 14 as a fulcrum by the spring force of the opening/closing spring member 13. In this case, the spring force of the opening/closing spring member 13 may be weak, and the opening speed and impact of the lid 9 can also be made small.

That is, when the lid body 9 is opened, as shown in FIG. Almost no impact force is applied to the body 9 when the body 9 is opened. Further, when an unreasonable force is applied to the lid 9, the one end leg piece 16 is elastically deformed and the lower front edge 21 of the lid 9 is deformed as shown in FIG.
is the filter mounting opening 12 of the dust case 4.
It comes into contact with the protruding rib 22 provided on the lower front surface of the holder and is securely locked.

Next, bag-shaped filter 3 folded into a small size
3 by the bag opening 34, and lock the lower end into the inner surface side locking hole 35 of the lid 9, and then close the opening/closing spring member 1 of the lid 9.
When the clamp 28 rotates against the spring force 3, the clamp 28 engages with the locking portion 29, whereby the opening 12 of the dust case 4 is closed with the lid 9. At this time, bag mouth 3
The upper end side of 4 is held by a locking/disengaging device 36.

When the fan motor is operated to suck dust from the intake port 10, the bag-like filter 33 expands inside the dust case 4 and collects the dust. When the bag-shaped filter 33 is full, the main body case 1 and the dust case 4 are released by pressing the upper clamp 8, and the dust case 4 is carried to a dust disposal area and the filter device is removed. The tip of the removal device 36 moves backward, so the bag-shaped filter 33
is discharged from the rear opening of the dust case 4.

Since the lid opening/closing device according to the present invention is constructed as described above, there is no need to provide a separate buffer member, and the legs of the opening/closing spring member allow smooth opening and closing of the lid, thereby preventing damage due to impact. In addition, when the lid is opened with a larger force, the legs of the opening/closing spring member are elastically deformed, and the front edge of the lower end of the lid comes into contact with the protruding rib of the mounting plate, resulting in a two-step locking, which is simple and reliable. This makes it possible to secure the lock with sufficient cushioning.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional side view of the main parts of a vacuum cleaner embodying the present invention, Figure 2 is an enlarged sectional view of the main parts, and Figures 3 and 4 show the main parts in different states when the lid is opened. The enlarged cross-sectional view, FIG. 5, is a cross-sectional view of the main part of FIG. 2. 4...Dust case (mounting body), 9...Lid body,
28... Clamp, 14... Support shaft, 12... Opening, 13... Opening/closing spring member, 16... Leg piece, 22
...Protruding ribs.

Claims (1)

[Claims for Utility Model Registration] 1. A lid body which is pivotably supported in the opening of the mounting body by a support shaft via an opening/closing spring member at the lower part, and whose upper part is engaged and disengaged by a clamping means, in which the lid body is openable and closable. An opening/closing device for a lid body, characterized in that when the lid body is opened, the lid body abuts and locks on the mounting body via the legs of the opening/closing spring member. 2. The opening/closing device for a lid body according to claim 1, wherein the lower edge of the lid body abuts and locks on a protruding rib provided on the lower front surface of the mounting body.