JPH10148052A - Attaching/detaching structure of cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a cover from being damaged, by providing a stopper acting on a cover to warp it when the cover is forced to open after the cover has stopped the opening motion and positioning at a place where the contact face with the cover is not positioned on the same line against the right and left axes. SOLUTION: Hemispherical axes 2 of a cover 1 are pushed in the bearing hole of the body 3 and fitted therein. When the cover 1 is opened around the axes, the rear part of the cover 1 contacts a stopper 5 provided at the center of the right and left bearing holes and at a position where the contact face with the cover 1 is not positioned on the same line with the right and left axes 2 and comes to a halt. When a force F to the opening direction is brought about by an abrupt opening motion, the cover 1 touches on the contact point D of the stopper 5 and does not move. And a deflection is generated at the front part 1a like the B-B line. And then, a force to the direction C arises in the axes 2 at the contact point D as a fulcrum by the leverage. When a larger force than a certain value has acted on the axes, a protruded lug 1b to support the axes is deformed inward and the axis 2 slips out of the bearing hole and the cover 1 gets out of place to the direction of the C-arrow mark. And hence, the cover 1 can be prevented from being damaged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for attaching and detaching a lid that is attached to a main body and that opens and closes.

[0002]

2. Description of the Related Art A conventional lid attaching / detaching structure is generally as shown in FIG. 5, and will be described below.

The shaft 22 of the lid 21 is connected to a bearing hole 24 of a main body 23.
And the lid 21 opened and closed with the shaft 22 as the center axis. However, the lid 21 comes off or is easily attached (detachable).
Many were not considered.

[0004]

However, in the conventional configuration, when a further forcible force in the opening direction is generated despite the lid 21 being in the open state, the lid 21 is disengaged regardless of the detachment of the lid 21. In many cases, the shaft 22 or the bearing hole 24 of the main body is damaged and cannot be reused.

Further, as is apparent from the fact that it is difficult to come off under the above-mentioned conditions, it is also difficult to push and fit.

The detachability is determined by many factors such as the softness of the material and the size of the parts (here, the total length of the left and right shafts 22 and the shaft 22, the diameter of the bearing hole 24, etc.). And it was difficult to adjust.

[0007]

According to the present invention, there is provided a lid attachment / detachment structure having left and right bearing holes provided on a main body and located on a coaxial line, and left and right shafts attached to the bearing holes.
A lid that opens and closes about the axis, and stops the opening operation of the lid, and acts to bend the lid when forcedly opened after the stop, and the contact surface with the lid has left and right axes. And a stopper provided at a position that is not on the same line.

According to the present invention, when a force in the opening direction is forcibly generated, the lid is deflected and the shape of the lid shaft is easily disengaged from the bearing hole of the main body. The bearing hole is not damaged.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention provides a horizontal and coaxial line of left and right bearing holes provided in a main body, and left and right shafts attached to the bearing holes. To stop the opening operation of the opening and closing operation of the lid,
In addition, a stopper is provided in which the contact surface with the lid is not located on the same line between the left and right axes in order to have an action of bending the lid by a further forced opening operation after the stop. And
In normal use, the lid is opened and closed without being easily detached because the shaft of the lid is inserted into the bearing hole of the main body, and the lid comes to rest in the open state when the rear portion of the lid hits the stopper. However, if a further force in the opening direction occurs even though the lid is in the open state, or if an excessive force in the opening direction occurs due to a sudden opening operation,
The rear portion of the lid is pressed against the stoppers against the shafts at both ends, and the lever is bent by the leverage, and the bending causes the projection of the shaft inserted into the bearing hole to come off, thereby preventing the lid from coming off and being damaged.

Further, since the left and right shafts attached to the bearing hole are substantially hemispherical, the shaft easily slides into the shaft at the time of fitting and fitting, and even if a force in the forcible opening direction is generated, the shaft is moved from the bearing hole. It is easy to slide out and the detachability is further improved.

Further, the stopper is provided at the center of the left and right bearing holes of the main body. In addition, the notch provided on the inner side opposite to the projections of the left and right shafts attached to the bearing holes, and the rear end surface bent from the upper surface of the lid at the junction with the left and right end surfaces, not only the deflection of the entire lid, but also The joints including the shaft projections are also made to bend easily, the detachability is further improved, and the ease of disengagement can be easily adjusted by the cut shape, which is very convenient for forming the lid.

An embodiment of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a configuration diagram of a lid attaching / detaching structure according to Embodiment 1 of the present invention, and FIG. 2 is a sectional view taken along line AA of FIG.

In the figure, a hemispherical shaft 2 of a lid 1 is attached to a main body 3.
The cover 1 is opened and closed with the shaft 2 as the center axis. When the opening operation is performed, the rear portion of the lid 1 hits the stopper 5 provided at the center of the left and right bearing holes 4 and at the position where the contact surface with the lid 1 is not on the same line as the left and right shafts 1. I do.

In the above arrangement, when the lid 1 is in the open state, a force F in the further opening direction (the direction of the arrow in FIG. 2) is generated, or an excessive force in the opening direction due to a sudden opening operation. When F occurs, the lid 1 does not move because the rear portion is in contact with the stopper 5 at the contact point D, and BB indicated by a two-dot chain line
The front part 1a, which is not fixed like a line, causes deflection.

Simultaneously, a force is generated in the direction C by leverage of the shaft 2 of the lid 1 about the contact point D as a fulcrum. When a force greater than a certain force is applied, the ear 1b projecting and supporting the shaft 2 is deformed inward, and the shaft 2 slides out of the bearing hole 4 and comes off in the direction of arrow C before the lid 1 is damaged.

Further, after the lid 1 is detached, it is attached to the original configuration and reused, so that it can be used again and again in the original configuration.

(Embodiment 2) FIG. 3 is a structural view of a lid attaching / detaching structure according to Embodiment 2 of the present invention, and FIG. 4 is a sectional view taken along line EE of FIG. It is to be noted that components having the same numbers as those in FIG. 1 have the same names and the same functions.

In the figure, the hemispherical shaft 2 of the lid 11 is attached to the bearing hole 4 of the main body 3 and the shaft 2 is used as a center axis.
Perform opening and closing operations. Further, when the opening operation is performed, the stopper 5 provided at the center position of the left and right bearing holes 4 and the contact surface with the lid 11 is not on the same line as the left and right shafts 2, and is provided at the position behind the shaft 2. 11 rear part 1c hits and stops.

In the above configuration, the force F in the further opening direction (the direction of the arrow in FIG. 4) occurs even though the lid 11 is in the open state, or the force in the excessive opening direction due to the sudden opening operation. When F occurs, the lid 11 does not move because the rear part 1c is in contact with the stopper 5 at the contact point J, and the front part which is not fixed as shown by a GG line shown by a two-dot chain line is bent, and The shaft 2 of the lid 11 generates a force in the H direction by the leverage with the contact point J as a fulcrum.

When a force greater than a certain force is applied, the ear 1d including the shaft 2 bends in the notch 6 direction (inward), which is cut deeper than the center of the shaft 2, and the shaft 2
The lid 11 comes off in the direction of the arrow C before the lid 11 is slid out of the lid 11 and the lid 11 is broken.

In the case of a force higher than a certain force, this force can be easily adjusted by adjusting the deformation strength of the ear 1d depending on the depth of the cut 6.

Further, after the lid 11 is detached, it is attached to the original configuration and reused, so that it can be used again and again in the original configuration.

[0023]

As described above, according to the lid attaching / detaching structure of the present invention, the following effects can be obtained.

When a further force in the opening direction is generated despite the lid being in the open state, or when an excessive force in the opening direction is generated due to a sudden opening operation, the cover itself is bent. The shaft of the lid is easily detached from the bearing hole of the main body, and it is improved that the lid and the main body were damaged and could not be reused in the past, and can be reused after being detached.

Further, since the left and right shaft portions attached to the bearing hole are hemispherical, they can easily slide out from the bearing hole, and the detachability is further improved.

By providing the stopper at the center between the left and right bearing holes of the main body, the deflection of the lid can be maximized.

By providing the cuts, not only the entire lid but also the fixing portion of the shaft itself can be easily bent. Further, the detachability is improved, and the detachability is easily improved by the cut shape. Because it can be adjusted, it is very convenient for molding the lid.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a lid attaching / detaching configuration according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is an exploded perspective view of a lid attaching / detaching configuration according to a second embodiment of the present invention.

FIG. 4 is a sectional view taken along line EE of FIG. 3;

FIG. 5 is an exploded perspective view of a conventional lid attaching / detaching configuration.

[Explanation of symbols]

 1,11 lid 1b, 1d ear 2 shaft 4 bearing hole 5 stopper 6 cut

Claims (4)

[Claims] 1. A cover having left and right bearing holes provided on a main body and located on a coaxial line, left and right shafts attached to the bearing holes, and a lid that opens and closes around the shaft, and an opening operation of the lid. Stopping and attaching / detaching a lid provided with a stopper that acts to bend the lid when forcedly opened after the stop and the contact surface with the lid is provided at a position that is not on the same line with respect to the left and right axes. Constitution. 2. The lid attachment / detachment structure according to claim 1, wherein the distal ends of the left and right shafts are substantially hemispherical. 3. The detachable lid mounting structure according to claim 2, wherein a stopper is provided at the center of the bearing hole. 4. The lid attachment / detachment structure according to claim 2, wherein a notch is provided on a side opposite to a tip portion of the left and right shafts.