JPS6311889B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an opening/closing device for a lid of a cooking device, household appliances, etc. used in a general household.

The structure of the conventional example and its problems Figure 1 shows the cross-sectional structure of a rice cooker equipped with a conventional lid opening/closing structure. is disengaged, the lid 3 rotates around the shaft 4 and opens, allowing the contents to be taken out. Also, the first
In the state shown in the figure, the main body 5 and part of the lever 1 are fitted, the lid 3 and the main body 5 are connected, and the entire main body 5 can be carried by holding the lid 3.

FIG. 2 shows an enlarged view of the main part of the structure near the lever, and a lever push button 2 is attached to the lever 1. The lever 1 is bent so that both sides thereof face each other to form a side wall 1a, and a bearing plate 6 is provided inside both side walls 1a so as to have a surface parallel to the both side walls 1a. Further, a spring 7 is provided on the inner surface of the bearing plate 6 so that one end is in contact with the lever 1 and the other end is in contact with the bearing plate 6. wall 1
A shaft 8 is provided through the hole a and the hole on the side of the bearing plate 6, and the lever 1 is pushed up by the spring 7.

FIG. 3 shows the main parts in FIG. 2, and the lever mechanism consisting of the lever 1, lever push button 2, bearing plate 6, spring 7, shaft 8, etc.
It was fixed to the lid body 3 with screws 9.

According to the above configuration, there is a problem that when operating the lever push button 2 and when carrying the main body 5 by holding the lid 3, a load is applied to the screw 9, causing the screw 9 to loosen. In addition, when assembling the lever mechanism in the state shown in Fig. 3, the spring 7 is bent from its natural state and assembled in a biased state, so the shaft 8 is
There was a problem in that it was very difficult and time consuming to penetrate the three parts of the lever 1, the bearing plate 6, and the spring 7.

OBJECTS OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems and to provide a lever shaft support structure that improves operational stability and assemblability of the lever.

Structure of the Invention In order to achieve the above object, the present invention includes a lever, a shaft, and a spring, the lever is attached to the lid body via the shaft, and the spring is inserted between the lever and the lid body. Moreover, a part of the lever is provided with an arcuate portion protruding in the pressing direction thereof, and the lid body is provided with a recessed portion that contacts the outer surface of the arcuate portion, and the lid body is provided with an inner surface of the arcuate portion. By fixing the shaft that supports the lever, it is possible to stabilize the operation of the lever and improve ease of assembly.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 4, the lever 10 is partially formed with an arcuate portion 10a projecting in the pressing direction, and the lid 11 is provided with an arcuate portion 10a.
A recess 1 into which 0a is fitted so that its outer surfaces are in contact with each other.
1a is formed. The inner surface of the recessed portion 11a has an arcuate shape concentric with the arc of the arcuate portion 10a. 1
2 is inserted into the inner surface of the arcuate portion 10a, and
This is a shaft which holds the recess 11a and the recess 11a and is rotatably supported. Reference numeral 13 denotes a spring disposed between the lever 10 and the lid body 11 and biased in a direction to separate them. 14 is a lever push button provided on the lever 10, and is exposed from the outer surface of the lid body 11.

FIG. 5 shows a portion of the lid body 11 near the recess 11a, and holes 11b are provided at both ends of the recess 11a facing each other, and the shaft 1 is inserted into the hole 11b.
By inserting both ends of the shaft 12, the shaft 12 is fixed. 11c is a projection that positions the spring 13 at a predetermined position and is integrally formed with the lid body 11.

The shaft 12 described above has a substantially L-shape as shown in FIG.
The other end side contacts a protrusion 11d provided integrally with the lid body 11 to prevent the shaft 12 from coming out or shifting from the hole 11b.

To explain the operation in the above configuration, lever 1
0 is subjected to a rotational force about the shaft 12 by the spring 13, so when the end of the lever 10 opposite to the end where the lever push button 14 is fitted to the main body, the main body and the lid are connected. 11 is combined with the lid body 1
1 is in a closed state. When the main body is lifted up by the lid 11 in this state, the force applied to the lever 10 is a downward main body load, and the concave portion 11a of the lid 11 receives this force. Further, when the lever push button 14 is pressed down, the lever 10 rotates about the shaft 12, and the fitting with the main body is released, and the lid body 12 is opened.

In the above configuration, the spring 13 is mounted on the lid body 11.
The lever 10 can be easily assembled by simply placing the arcuate portion 10a of the lever 10 on the recess 11a of the lid 11, and passing the shaft 12 through the hole 11b.
Further, since the lever 10 is fixed to the lid body 11 without using parts such as screws or rivets, it is particularly effective in terms of reliability when a load is applied or a thermal cycle is applied.

At the same time, since no bearing plates or screws are used as in the conventional case, rationalization can be achieved.

Effects of the Invention As is clear from the above embodiments, according to the present invention, the lever can be supported without using a bearing plate, and the lever portion can be directly assembled to the lid, so that Workability can be improved, and since fastening parts such as screws are not used, the operational reliability of the lever can be improved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a conventional rice cooker, Fig. 2 is an enlarged sectional view of main parts showing the opening/closing structure of the lid, Fig. 3 is a sectional view of its lever mechanism, and Fig. 4 is an embodiment of the present invention. A sectional view of the main parts showing the opening/closing structure of the lid body in the example,
FIG. 5 is an enlarged perspective view of the main part of the lid, and FIG. 6 is a bottom view of the main part showing the structure for attaching the shaft to the lid. 10... Lever, 10a... Arc-shaped part, 11...
Lid body, 11a... recess, 12... shaft, 13... spring.

Claims (1)

[Claims] 1. A lid provided to the main body so as to be openable and closable, a lever having one end that is detachable from the main body and the other end being pressed and operated, and an arc-shaped part provided on a part of the lever so as to protrude in the pressing direction. , a recess in which the outer surface of the arc-shaped portion is located, a shaft disposed on the inner surface of the arc-shaped portion and fixed to the lid, and an attachment located between the lever and the lid in a direction opposite to the pressing direction. 1. An opening/closing device for a lid body, comprising a spring having force, and configured such that engagement between the lever and the main body is released by pressing the lever.