JPH08270516A - Cover locking structure for box provided with opening - Google Patents

Abstract

PURPOSE: To obtain the fitting structure, which can engage a box body with a cover and disengage them with single step operation without causing looseness between the box body and the cover at the time of engagement. CONSTITUTION: A long narrow receiver hole and a locking cam piece 24 are provided in an opening edge 22 of a box body 20, and on the other hand, a cover body 30 which is overlapped with the opening edge so as to close the opening, is provided with an operating rod 40 provided with an engaging piece 42 which can be engaged with the locking cam piece 24, and the operating rod 40 is inserted into the receiver hole so as to engage the locking cam piece with the engaging piece, and an elastic body 50 for energizing the operating rod 40 in the removing direction is provided between the locking cam piece and the engaging piece.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for a lid for closing a large opening provided in a box, such as an intake box having a large opening for attaching and detaching an air cleaner element, which is inserted in an intake passage of an engine. The present invention relates to a preferable lid locking structure device.

[0002]

2. Description of the Related Art Conventionally, as a means for connecting a box body of this kind and its lid, they have been stacked and bolted, but the operating rod is rotated many times during the engagement and disengagement operation. There was inconvenience. In addition, in order to eliminate such inconvenience, a hook-shaped operating rod is attached to the lid side, and this is inserted into the hook hole provided on the box side and rotated, and the hook of the operating rod is hooked. A locking structure that hooks on the back side of the to prevent it from coming off is also often used.

[0003]

However, simply,
If there is a gap between the hook and the back of the hook hole by simply hooking the hook provided on the operating rod to the back side of the hook hole to prevent the hook from coming off, there will be a gap between the box and lid when the box vibrates. And it may cause noise when it is extremely heavy. In addition, in order to eliminate such a problem, packing made of elastic material is interposed between the box body and the lid to prevent the occurrence of a gap, but the number of parts is increased and the manufacturing cost is increased. In addition to raising the height, there was a problem that the operation of attaching and detaching the lid was troublesome.

[0004]

In order to solve the above-mentioned problems, the present invention provides an elongated receiving hole and a locking cam piece at the opening edge of the box body, and a lid body which is superposed on the opening edge and closes it. Is provided with an operating rod having an engaging element capable of engaging with the locking cam piece, and the operating rod is inserted into the receiving hole so that the locking cam piece and the engaging element can be engaged with each other. An elastic body is provided between the stop cam piece and the engagement element to urge the operating rod in the pulling-out direction. Specifically, a knob is provided in the vicinity of the end of the operating rod, and a coil spring for urging the operating rod in the pulling-out direction is provided between the knob and the lid, or the locking cam piece. Is formed of an elastic body.

[0005]

When the lid is placed on the opening of the box, the operating rod attached to the lid is inserted into the receiving hole. That is, the engaging element attached to the operating rod passes through the elongated hole, and the operating rod is inserted through the large diameter portion. Then, when the operating rod is rotated, the engaging element provided on the operating rod engages with the locking cam piece provided on the box body to prevent the operating rod from coming off. Further, in the engaged state, the engaging element is pressed against the locking cam piece by the elastic force of the coil spring or the locking cam piece, and the box body and the lid are joined to each other without a gap by the elastic force.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. In FIG. 1, reference numeral 10 denotes an intake box connected to a vehicle engine, which has a relatively deep rectangular box body 20 and a lid 30 for closing the box body. No) is contained.

The box body 20 has a substantially rectangular shape and is made by injection molding a synthetic resin. Then, one surface thereof is entirely opened to form an opening 21, and the lid 30 is openably and closably closed. A brim-shaped opening edge 22 is formed along the entire circumference of the edge of the box body 20 at the periphery of the opening portion 21, and the lid 30 is superposed on the opening edge 22 to form the opening portion 2.
It is designed to close 1. The opening edge 22 is provided with a plurality of elongated receiving holes 23 over the entire circumference. The receiving hole 23 includes an elongated slit 23a and a circular shaft hole portion 23b formed in the center thereof.

Reference numeral 24 is a locking cam piece provided adjacent to the peripheral edge of the receiving hole 23, and is formed adjacent to the receiving hole 23 so as to project from the back surface of the opening edge 22. As shown in FIGS. 4 and 6, the locking cam piece 24 has inclined portions 24 a, 24 a on both sides which are gently inclined from the back surface of the opening edge 22.
And a concave portion 24b formed in the center of the concave portion 24b, the engaging pin 42 as a follower, which will be described later, is guided and displaced by the inclined portion 24a, and when it reaches the substantially upper end thereof, the central concave portion 24b. It is the one that is locked in by it.

The lid 30 is made by injection molding a synthetic resin like the box 20, and has a shape like the box 20 is shallow. That is, the main body having the shallow concave portion 31 and the flange portion 32 protruding outward from the peripheral edge thereof are integrally formed. At the position corresponding to the receiving hole 23, the flange 32 is provided with a through hole 33 consisting of an elongated slit 33a of the same shape and a shaft hole 33b formed at the center thereof, and the operating rod 40 is attached thereto. Has been.

The operating rod 40 is formed by press-forming a steel plate at one end,
A knob 41 whose surface is rust-proofed by projection is welded by projection, and an engaging pin 42 as an engaging element is inserted through a lateral hole provided at the other end and fixed by means such as press fitting or brazing.

The operating rod 40 is assembled to the lid 30 by holding the knob 41, aligning the longitudinal direction of the engaging pin 42 with the direction of the elongated slit 33a, and inserting the operating rod 40 into the shaft hole 33b. The receiving hole 23 and the through hole 33 are formed in the same shape and size. That is, the holes 23 and 33 are slightly wider than the thickness of the engaging pin 42,
It is formed in an elongated shape slightly longer than its length, and has a shaft hole portion slightly larger than the operating rod 40 in the center thereof.

Thus, when the box body 20 and the lid 30 are overlapped with the opening edge 22 and the collar portion 32, the receiving hole 23 is formed.
Since the positions of the through hole 33 and the through hole 33 coincide with each other, the operating rod 40 can be inserted into the receiving hole 23 by adjusting the phase of the engaging pin 42. Also, from this state, the operating rod 40
By rotating the, the engaging pin 42 is engaged with the locking cam piece 24, and the operating rod 40 is locked at that position.

According to the present invention, the box body 2 is provided.
Means are provided so that rattling does not occur between the box body 20 and the lid 30 when the lid 30 is covered with 0 and locked by the operating rod 40. That is, the elastic body 50 for urging the operating rod 40 in the pulling-out direction is provided between the cam piece 24 and the engaging pin 42 so that the engaging pin 42 is always pressed by the locking cam piece 24. It is provided.

That is, in the embodiment of FIGS. 1 to 3, the coil spring 51 is interposed between the knob 41 provided at the end of the operating rod 40 and the flange 32 of the lid 30 in a compressed state. . Thus, the operating rod 40 is constantly pressed against the surface of the locking cam piece 24 by the elastic force of the coil spring 51, and as a reaction thereof, the flange portion 32 of the lid 30 is strongly pulled to the flange-shaped opening edge 22 of the box body 20. There is no backlash.

Further, in the embodiment shown in FIGS. 5 and 6, the locking cam piece 24 is made by bending elastic steel wire such as spring steel or piano wire, and the rivet 35 with the flange 35a attaches the lid 30 to the lid 30. It is attached to the collar portion 32. In this embodiment, the locking cam piece 24 has an oval oval shape in a plan view, and a straight line portion in a plan view has a chevron shape in side view as in the case of the above embodiment. Further, in the operating rod 40, the height of the central concave portion 24b is set to be slightly higher than the position of the engaging pin 42. Thus, in the state of FIG. 5 in which the engagement pin 42 is engaged with the recess 24b, the steel wire forming the locking cam piece 24 is compressed and deformed, and the elastic force causes the operating rod 40 to open.
Then, as in the case described above, there is no play in the overlapping surface between the collar portion 32 and the opening edge 22.

As described above, according to these embodiments, as in the conventional case, the opening 21 of the box body is covered with the lid 30, and the engaging pin provided on the operating rod 40 previously attached to the y lid 30. An elongated slit 2 in which 42 is formed in the receiving hole 23 of the box body
3a is inserted in the same direction as the direction of 3a, and thereafter, a rotation operation is performed to prevent the engagement, an engagement element (engagement pin) 42 provided on the operation rod 40 goes up the inclined portion 24a of the locking cam piece 24,
When it reaches the top of the lift, it engages with the concave portion 24b and is prevented from rotating at that position, and its state is maintained. At this time, the engagement element (engagement pin) 42 brings the flange portion 32 and the opening edge 22 into close contact with each other by the elastic force of the coil spring 51 or the elastic locking cam piece 24, and eliminates the play between them.

[0017]

As described above, according to the present invention, the box body and the lid can be joined or separated by the simple operation of rotating the operating rod as in the conventional case. In addition, despite the simple structure, the inside and outside of the box body are sealed by eliminating the gap between them and do not easily loosen due to vibration.
Further, there is an effect that the box can be produced at low cost without enlarging the outer shape of the box only by providing the locking cam piece around the receiving hole.

[Brief description of drawings]

FIG. 1 is a sectional view of an air intake box which is an embodiment of the present invention.

FIG. 2 is an external view showing an enlarged main part thereof.

FIG. 3 is an enlarged cross-sectional view showing an enlarged main part of FIG.

4A and 4B are views showing the cam portion, wherein FIG. 4A is a partial plan view of a lid member, and FIG.

FIG. 5 is an enlarged sectional view corresponding to FIG. 3 showing another embodiment.

6A and 6B show the cam portion, FIG. 6A is a partial plan view of the lid member, and FIG. 6B is a sectional view taken along line AA.

[Explanation of symbols]

 10 ... ・ Intake box 20 ... Box body 21 ... Opening 22 ... Collar-shaped opening edge 23 ... Elongate receiving hole 23a ... Slit 23b ... Shaft hole Part 24 ... Locking cam piece 24a ... Inclined part 24b ... Recessed part 30 ... Lid (main body) 31 ... Shallow recessed part 32 ... Collar part 33 ... Transparent Hole 33a ... Slit 33b ... Shaft hole 35 ... Rivet 40 ... Operating rod 41 ... Knob 42 ... Engagement element (engagement pin) 50 ... Elasticity Body 51 ... Coil spring (elastic body)

Claims (3)

[Claims] 1. An engaging element capable of engaging the locking cam piece with a lid body which is provided with an elongated receiving hole and a locking cam piece on the opening edge of the box body and which is overlapped with the opening edge to close the opening hole. An operating rod provided with, the operating rod is inserted into the receiving hole so that the locking cam piece and the engaging element can engage with each other, and the operating rod is pulled out between the locking cam piece and the engaging element. A lid locking structure for a box with an opening, which is provided with an elastic body that urges in the releasing direction. 2. The opening according to claim 1, wherein a knob is provided in the vicinity of an end portion of the operating rod, and a coil spring for urging the operating rod in a pulling-out direction is provided between the knob and the lid. Locking structure for the box lid. 3. The lid locking structure for a box with an opening according to claim 1, wherein the locking cam piece is formed of an elastic body, and the lift of the locking cam piece is set higher than the position of the engaging element.