JP4299449B2 - Box body opening and closing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a box body opening / closing device whose opening / closing movement is controlled by a rod-type air damper, such as a glove box rotatably supported on an instrument panel of an automobile.
[0002]
[Prior art]
As this kind of conventional switchgear, there is one shown in Japanese Utility Model Publication No. 5-58996.
The conventional switchgear is not specifically shown, but a rod-type air damper cylinder is screwed to the instrument panel so as to be swingable, and the tip of the piston rod of the air damper is attached to the glove box side. It is configured to be screwed.
[0003]
Therefore, when the glove box is moved in the opening direction, the piston rod is pulled out from the cylinder, so that a damper effect is obtained to ensure that the glove box slowly moves to the open state, and conversely, the glove box is closed. When moving in the direction, the piston rod is pushed back into the cylinder, which facilitates the closing operation of the glove box.
[0004]
[Problems to be solved by the invention]
However, under the conventional switchgear, the cylinder is screwed to the instrument panel side and the tip of the piston rod is screwed to the glove box side. Will be. Therefore, it may be possible to use a simple clip instead of screwing, but when opening or closing a large glove box or a glove box full of heavy objects, a large force is applied to the simple clip itself. Therefore, there was a risk that the simple clip would come off.
[0005]
[Means for Solving the Problems]
The present invention has been developed in order to effectively solve such a problem. The invention according to claim 1 controls the opening / closing movement of the box body supported on the support structure so as to be opened and closed by a rod type air damper. An opening / closing device for supporting the air damper cylinder on the support structure side, and fitting the tip of the piston rod of the air damper to the box body side through an insertion hole drilled in the support structure, 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, and air is generated by rolling of a contact surface between each convex portion and the cylinder. A structure that supports the damper in the pulling direction was adopted.
[0006]
The invention according to claim 2 is based on claim 1 and forms a shaft portion in one of the cylinder or the pair of convex portions of the air damper and forms a bearing hole portion into which the shaft portion is fitted in the other, A configuration is adopted in which the bearing hole portion and the shaft portion support in the return direction from the stretched state of the air damper.
[0007]
According to a third aspect of the present invention, on the premise of the first aspect, a shaft portion is formed in one of the cylinder of the air damper or the pair of convex portions, and a bearing hole portion into which the shaft portion is fitted is formed in the other, and a pair of A configuration was adopted in which the shaft portion was fitted into the bearing hole portion while pushing the convex portion of the shaft.
[0008]
Therefore, in the first aspect of the invention, 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 fitted to the box body side through the insertion hole of the support structure. Therefore, the rod type air damper can be assembled with one touch. Also, supporting the air damper in the pulling direction by rolling of the contact surface between the convex part and the cylinder can lower the surface pressure of both and increase the receiving load. Even when the box body is strong and suddenly moves with a heavy load, the piston rod can be moved smoothly in the pulling direction.
[0009]
In the invention according to claim 2, the shaft of the air damper is formed in one of the cylinder or the pair of convex portions, and the bearing hole portion into which the shaft portion is fitted is formed in the other. Since the bearing load in the direction may be smaller than the bearing load in the pulling direction, the smooth movement of the piston rod in the return direction can be ensured by the bearing hole portion and the shaft portion. In the invention according to claim 3, since the cylinder of the air damper can be pivotally supported on the pair of convex portions with one touch, the assembly of the air damper to the support structure side is further facilitated.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, if the present invention is described in detail based on each preferred embodiment, the opening / closing device according to the first embodiment is also intended for a glove box that is rotatably supported on an instrument panel of an automobile. Although it has been developed, it is characterized by the following configuration.
[0011]
That is, in the first embodiment, as shown in FIG. 1, the rod-type air damper A has a central portion on the left and right sides of the reduced diameter portion 1a which is reduced in diameter by one step from the general surface of the cylinder 1. A fitting hole for forming a pair of shaft portions 5 to be fitted into a bearing hole portion 9 on the instrument panel P side, which will be described later, and a fitting projection 10 on the glove box B side, which will be described later, on the tip portion of the piston rod 3. 6 is formed, and the instrument panel P is formed with an insertion hole 7 through which the tip of the piston rod 3 of the rod type air damper A is inserted, and an arc shape is formed in the vicinity of the insertion hole 7. A pair of convex walls 8 serving as convex portions are provided, bearing holes 9 having a curvature smaller than the curvature of the convex walls 8 are formed on the respective convex walls 8, and the bearing holes 9 have the above-mentioned The shaft part 5 on the cylinder 1 side is inserted. .
[0012]
Therefore, when the rod-type air damper A is assembled on the instrument panel P side, the reduced diameter portion 1a of the cylinder 1 is pushed between the pair of convex walls 8 while pushing the pair of convex walls 8 open. As shown in FIG. 2, the pair of shaft portions 5 formed in the reduced diameter portion 1a are fitted into the bearing hole portions 9 of the respective convex walls 8 with one touch, so that the rod type air damper A is mounted on the instrument panel P side. In such a state, the lower surface of the general surface portion of the cylinder 1 comes into contact with the top portions of the pair of convex walls 8 as shown in the figure.
[0013]
Then, after obtaining the deflection of the piston rod 3 and fitting the fitting projection 10 on the glove box B side into the fitting hole 6 of the piston rod 3 inserted through the insertion hole 7 of the instrument panel P. 3, this time, the tip of the piston rod 3 is fitted to the glove box B side by one touch.
[0014]
As shown in the figure, the air damper A according to the present embodiment includes a cylindrical cylinder 1 already described, a piston 2 that moves in the cylinder 1, and a piston rod that extends integrally from the piston 2. 3 and a cap 4 for controlling the flow of air into the cylinder 1.
[0015]
Therefore, in the opening / closing device having such a configuration, when the glove box B is unlocked and moved in the opening direction, the piston rod 3 is moved as shown in FIG. By pulling out from the inside of the cylinder 1, it is possible to obtain a damper effect and to ensure that the glove box B slowly moves to the open state, but at this time, as shown in FIG. X1 is in contact with the tops of a pair of convex walls 8 exhibiting an arc shape, and while rolling, a large bearing load can be obtained by reducing the surface pressure. For example, the glove box B is large or full of heavy objects Thus, even when the glove box B is strong and tries to move suddenly, the glove box B can be firmly received to ensure the smooth movement of the piston rod 3 in the pulling direction.
[0016]
On the other hand, when the glove box B is moved in the closing direction, the piston rod 3 is pushed back into the cylinder 1 to facilitate the closing operation of the glove box B. 6 is not required so much, as shown in FIG. 6, the shaft 5 having a smaller curvature than the curvature of the convex wall 8 and the bearing hole 9 abut on the return load of the piston rod 3, and the bearing load 9 makes a moderate load. Therefore, the smooth movement of the piston rod 3 in the return direction is also ensured.
[0017]
Therefore, under the first embodiment, 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, the movement is performed smoothly. Even when the glove box B and the glove box B full of heavy objects are targeted, a stable operating posture of the air damper A can be obtained. Further, in the first embodiment, the swing fulcrum of the air damper A is located at the center of the cylinder 1, so that the swing of the air damper A itself is minimized and is unnecessary for the piston 2 during operation. Power is not added. Also from this result, the smooth movement of the piston rod 3 can be ensured.
[0018]
Next, the switchgear according to the second embodiment will be described. The second embodiment basically follows the first embodiment described above, but the difference is that As shown in FIG. 7, contrary to the first embodiment, a bearing hole portion 9 is formed on the reduced diameter portion 1 a side of the cylinder 1, and the bearing hole portion 9 is fitted on the opposing surface side of the pair of convex walls 8. The shaft portion 5 is formed.
[0019]
Therefore, even in the second embodiment, although not specifically illustrated, the shaft portion 5 of the convex wall 8 is inserted into the bearing hole portion 9 formed in the reduced diameter portion 1a of the cylinder 1 from the lateral direction. For example, the rod-type air damper A can be pivotally supported on the instrument panel P side by one touch. After that, as in the first embodiment, the deflection of the piston rod 3 is obtained and the instrument panel is obtained. If the fitting protrusion 10 on the glove box B side is fitted into the fitting hole 6 of the piston rod 3 inserted through the P insertion hole 7, the tip of the piston rod 3 is fitted to the glove box B side with a single touch. it can.
[0020]
【The invention's effect】
As described above, according to the present invention, the cylinder of the rod type air damper is pivotally supported on the support structure side by adopting the above configuration, and the piston rod of the air damper is fitted to the box body side through the insertion hole of the support structure. Therefore, the rod type air damper can be assembled with one touch. Also, supporting the air damper in the pulling direction by rolling of the contact surface between the convex part and the cylinder can lower the surface pressure of both and increase the receiving load. Even if the box body is strong and suddenly moves with a heavy load, it can be received and the movement of the piston rod in the pulling direction can be ensured.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a main part of 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 cross-sectional view of the main part showing a state in which a piston rod of a rod type air damper is fitted to the glove box side.
FIG. 4 is an explanatory diagram showing the relationship between the movement of the glove box in the opening direction and the rod type air damper.
FIG. 5 is an explanatory diagram for explaining a portion that receives a load when the glove box is opened.
FIG. 6 is an explanatory diagram for explaining a portion that receives a load when the glove box is closed.
FIG. 7 is an exploded perspective view showing a main part of a switchgear 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 Reduced diameter part 2 Cylinder 3 Piston rod 4 Cap 5 Shaft part (arc part)
6 Fitting hole 7 Insertion hole 8 Convex wall (convex part)
9 Bearing hole (arc)
10 Fitting projection X1 Contact part X2 Contact part

Claims (3)

An opening and closing device that controls the opening and closing movement of the box body supported by the support structure by means of a rod-type air damper. The air damper cylinder is pivotally supported on the support structure side, and the tip of the piston rod of the air damper Is fitted to the box body side through an insertion hole formed in the support structure, and 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 formed at the top of each convex portion. The box body opening and closing device is configured to support the air damper in the pulling direction by rolling the contact surface between each convex portion and the cylinder.   A shaft portion is formed in one of the cylinder or the pair of convex portions of the air damper, and a bearing hole portion into which the shaft portion is fitted is formed in the other, and the air damper is stretched between the bearing hole portion and the shaft portion. 2. The box body opening and closing device according to claim 1, wherein the box body is supported in a returning direction from the state. A shaft portion is formed on one of the cylinder or the pair of convex portions of the air damper, and a bearing hole portion is formed on the other to insert the shaft portion. The box body opening and closing device according to claim 1, wherein the box body opening and closing device is fitted in the box.

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