JP2002106245A - Opening and closing device of box body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve an opening and closing device of a box body. SOLUTION: This opening and closing device controls the opening and closing movement of the box body supported to be opened and closed on a support structure P by a rod type air damper A. A cylinder 1 of the air damper is journaled to the support structure side, the tip part of a piston rod 3 of the air damper is passed through a penetrating hole 7 bored in the support structure and engaged with the box body side. A pair of projecting parts 8 presenting a circular-arc shape are provided near the penetrating hole of the support structure, a cylinder is abutted on the top of each projecting part, and the air damper is supported in the pull direction by rolling of an abutting surface between each projecting part and the cylinder, whereby the cylinder of the rod type air damper is journaled to the support structure side, and the piston rod of the air damper is passed through the penetrating hole of the support structure and engaged with the box body side. Thus, the rod type air damper can be assembled simply.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening and closing device for a box body whose opening and closing movement is controlled by a rod-type air damper, such as a glove box rotatably supported on an instrument panel of an automobile. Things.

[0002]

2. Description of the Related Art A conventional open / close device of this type is disclosed in
-58996. Although not specifically shown, the conventional opening / closing device includes a rod-type air damper cylinder screwed to the instrument panel side so as to be swingable, and a tip end portion of the piston rod of the air damper to the glove box side. It is configured to be screwed.

Accordingly, when the glove box is moved in the opening direction, the piston rod is pulled out of the cylinder, thereby obtaining a damper effect and ensuring that the glove box moves slowly to the open state. When the box is moved in the closing direction, the piston rod is pushed back into the cylinder, thereby promoting the closing operation of the glove box.

[0004]

However, under the conventional opening / closing device, the cylinder is screwed to the instrument panel side and the tip of the piston rod is screwed to the glove box side. Requires a complicated screwdriver operation. Therefore, instead of screwing, it is conceivable to use a simple clip for fixing, but when opening and closing a large glove box or a glove box packed with heavy objects, a large force is applied to the simple clip itself. Thus, there was a risk that the simple clip might come off.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been developed to effectively solve the above-mentioned problems, and the invention according to claim 1 is directed to a box structure which is supported on a support structure so as to be openable and closable. An opening / closing device that controls opening / closing motion by a rod-type air damper. While being fitted to the box body side, a pair of convex portions having an arc shape are provided in the vicinity of the insertion hole of the support structure, and a cylinder is brought into contact with the top of each convex portion. A configuration is adopted in which the contact surface rolls to support the air damper in the pulling direction.

According to a second aspect of the present invention, based on the first aspect, a support point in a return direction of the air damper is provided on an arc portion having a curvature smaller than the curvature of the convex portion on the concentric circle of the pair of convex portions. Existing configuration was adopted.

According to a third aspect of the present invention, based on the first aspect, a shaft portion is formed on one of a cylinder and a pair of convex portions of the air damper, and a bearing hole portion for fitting the shaft portion is formed on the other. Thus, a configuration is employed in which the shaft portion is fitted into the bearing hole while pushing and opening the pair of convex portions.

Therefore, in the invention according to claim 1,
The cylinder of the rod type air damper is pivotally supported on the support structure side, and the piston rod of the air damper fits with the box body side through the insertion hole of the support structure, so it is possible to assemble the rod type air damper with one touch Become. Also, by supporting the air damper in the pulling direction by rolling the contact surface between the convex portion and the cylinder, it is possible to reduce the surface pressure of both and increase the receiving load. Even if the box body tries to move strongly and suddenly with a heavy load or full load, it can be received and the smooth movement of the piston rod in the pulling direction can be guaranteed.

According to the second aspect of the present invention, the support point in the return direction of the air damper is determined on an arc portion having a curvature smaller than the curvature of the convex portion on the concentric circle of the pair of convex portions.
Since the receiving load in the return direction of the air damper may be smaller than the receiving load in the pulling direction, smooth movement of the piston rod in the return direction can be ensured. According to the third aspect of the present invention, the cylinder of the air damper can be pivotally supported on the pair of convex portions with one touch, so that the air damper can be more easily attached to the support structure side.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an opening and closing device according to a first embodiment of the present invention; Although it was developed for glove boxes to be used, it is characterized by adopting the following configuration.

That is, in the first embodiment, as shown in FIG. 1, the rod-type air damper A is provided on the left and right sides of the reduced diameter portion 1a which is reduced by one step from the general surface of the cylinder 1. A pair of shafts 5 to be fitted into a bearing hole 9 on the instrument panel P side, which will be described later, is formed at the center, and a glove box B, which will be described later, is
A fitting hole 6 for fitting the fitting protrusion 10 on the side is formed, and an insertion hole 7 for inserting the distal end of the piston rod 3 of the rod type air damper A into the instrument panel P.
And a pair of convex walls 8 as arc-shaped convex portions are provided near the insertion holes 7, and each of the convex walls 8 has a concentric circle and a curvature smaller than the curvature of the convex wall 8. Bearing hole 9
Is formed, and the shaft 5 on the cylinder 1 side is fitted into each bearing hole 9.

Therefore, when assembling the rod type air damper A on the instrument panel P side, while the pair of convex walls 8 are pushed open, the reduced diameter portion 1a of the cylinder 1 is opened.
Is pressed between the pair of convex walls 8, as shown in FIG. 2, the pair of shaft portions 5 formed in the reduced diameter portion 1 a are fitted into the bearing holes 9 of each convex wall 8 with one touch. As a result, the rod type air damper A is pivotally supported on the instrument panel P side in such a manner that the lower surface of the general surface portion of the cylinder 1 has a pair of convexes as shown in the drawing. It will come into contact with the top of the wall 8.

Then, after that, after the piston rod 3 is bent, the fitting projection 10 on the glove box B side is fitted into the fitting hole 6 of the piston rod 3 inserted into the insertion hole 7 of the instrument panel P. If this is the case, as shown in FIG.
The side is fitted with one touch.

The air damper A according to the present embodiment
As shown in the drawing, the cylindrical cylinder 1 already described
And a piston 2 that moves in the cylinder 1, a piston rod 3 integrally extended from the piston 2, and a cap 4 that controls the flow of air into the cylinder 1.

Therefore, in the opening / closing device having such a configuration, the glove box B is locked by its locking means (not shown).
Is released and the piston rod 3 is pulled out of the cylinder 1 as shown in FIG. 4, thereby obtaining a damper effect and the glove box B slowly moving to the open state. At this time, as shown in FIG. 5, the lower surface of the general surface of the cylinder 1 abuts X1 on the tops of the pair of convex walls 8 having an arc shape, and the surface pressure is lowered while rolling. Therefore, even if the glove box B is large or is full of heavy objects, and the glove box B is going to move strongly and suddenly, it is firmly received and the piston The smooth movement of the rod 3 in the pulling direction can be guaranteed.

Conversely, when the glove box B is moved in the closing direction, the piston rod 3 is pushed back into the cylinder 1 to promote the closing operation of the glove box B. At this time, Since a large receiving load is not required, as shown in FIG. 6, the return load of the piston rod 3 is reduced by the contact between the shaft portion 5 having a curvature smaller than the curvature of the convex wall 8 and the bearing hole portion X2. Therefore, the smooth movement of the piston rod 3 in the returning direction can be ensured.

Therefore, under the first embodiment, both when the piston rod 3 is pulled out from the cylinder 1 and when the piston rod 3 is pushed back into the cylinder 1,
Since the movement is performed smoothly, a stable operation posture of the air damper A can be obtained even for a large glove box B or a glove box B full of heavy objects. Further, in the first embodiment, since the swing fulcrum of the air damper A is located at the center of the cylinder 1, the swing of the air damper A itself is suppressed to a minimum, and unnecessary movement of the piston 2 during operation is prevented. No force is applied. Also from this result, smooth movement of the piston rod 3 can be guaranteed.

Next, a switching device according to a second embodiment will be described. The switching device of the second embodiment basically follows the above-described first embodiment, but differs therefrom. However, as shown in FIG. 7, contrary to the first embodiment,
A bearing portion 9 is formed on the reduced diameter portion 1 a side of the cylinder 1, and a shaft portion 5 that fits into the bearing hole portion 9 on the opposing surfaces of the pair of convex walls 8.
It is in the point which formed.

Therefore, even in the second embodiment, although not specifically shown, the shaft portion 5 of the convex wall 8 is laterally inserted into the bearing hole 9 formed in the reduced diameter portion 1a of the cylinder 1. Is inserted, the rod-type air damper A can be pivotally supported on the instrument panel P with one touch, and thereafter, the piston rod 3 can be supported similarly to the first embodiment.
Is obtained, and the fitting protrusion 10 on the glove box B side is fitted into the fitting hole 6 of the piston rod 3 inserted into the insertion hole 7 of the instrument panel P. It can be fitted to the glove box B side with one touch.

[0020]

As described above, according to the present invention, by adopting the above structure, the cylinder of the rod-type air damper is pivotally supported on the support structure side, and the piston rod of the air damper is inserted into the box through the insertion hole of the support structure. Because it fits with the body side,
The rod type air damper can be assembled with one touch. Also, by supporting the air damper in the pulling direction by rolling the contact surface between the convex portion and the cylinder, it is possible to reduce the surface pressure of both and increase the receiving load. Even if the box body tries to move strongly and suddenly with a heavy load or full load, it can be received and the smooth movement of the piston rod in the pulling direction can be guaranteed.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a main part showing a switchgear according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a main part showing a state in which a rod-type air damper is pivotally supported on an instrument panel side.

FIG. 3 is a sectional view of a main part showing a state where a piston rod of a rod type air damper is fitted to a glove box side.

FIG. 4 is an explanatory diagram showing a relationship between movement of a glove box in an opening direction and a rod-type air damper.

FIG. 5 is an explanatory diagram illustrating a portion that receives a load when the glove box is opened.

FIG. 6 is an explanatory diagram illustrating a portion that receives a load when the glove box is closed.

FIG. 7 is an exploded perspective view of a main part showing a switching device according to a second embodiment of the present invention.

[Explanation of symbols]

 A Rod-type air damper P Instrument panel (support structure) B Glove box (box body) 1 Cylinder 1a Cylinder reduced diameter portion 2 Piston 3 Piston rod 4 Cap 5 Shaft (arc) 6 Fitting hole 7 Insertion hole 8 Convex wall (convex part) 9 Bearing hole part (arc part) 10 Fitting protrusion X1 Contact part X2 Contact part

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) F16F 9/54 F16F 9/54

Claims (3)

[Claims] 1. An opening and closing device for controlling the opening and closing movement of a box body supported on a support structure so as to be openable and closable by a rod-type air damper, wherein a cylinder of the air damper is axially supported on the support structure side, and an air damper is provided. The distal end of the piston rod is fitted to the box body through an insertion hole formed in the support structure, and a pair of convex portions having an arc shape are provided near the insertion hole of the support structure. A box body opening / closing device characterized in that a cylinder is brought into contact with the top of a portion, and a support surface in a pulling direction of an air damper is provided by rolling of a contact surface between each convex portion and the cylinder. 2. The box body according to claim 1, wherein a support point in a return direction of the air damper exists on an arc portion having a curvature smaller than the curvature of the convex portion on a concentric circle of the pair of convex portions. Switchgear. 3. A cylinder or a pair of projections of an air damper, wherein a shaft is formed on one of the projections, and a bearing hole is formed on the other of the cylinder and a pair of projections. The box opening / closing device according to claim 1, wherein the portion is fitted into the bearing hole.