JP3790300B2 - Damper device for storage box - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a damper device used in a storage box such as a glove box provided on an instrument panel of an automobile so as to be opened and closed.
[0002]
[Prior art]
In the case of a storage box such as a glove box, it is necessary to install a damper device that controls the opening and closing operation of the storage box in order to prevent the storage box itself from opening suddenly or generating an unpleasant impact sound. There is.
Therefore, as this kind of damper device, for example, an air damper device shown in Japanese Utility Model Laid-Open No. 5-76894 has been proposed.
[0003]
Although not shown specifically, the conventional damper device is mainly composed of a cylinder, a piston, and three independent parts of a wire, and a piston with a seal ring provided inside the cylinder is slidably disposed. The piston is urged in one direction by a compression coil spring, and a guide cap is fitted to the front end opening side of the cylinder, and one end of a wire wired in an arbitrary direction by the guide cap is connected to the piston. It is the composition to do.
[0004]
Also, on the rear end side of the cylinder, a seat valve, a backup spring, and an air filter are formed by integrally forming a cylindrical portion and a rear wall having a vent hole, and forming an orifice in the cylindrical portion of the rear wall. Are arranged in order, and the air filter side is held by a retainer with an opening.
[0005]
Therefore, when using such a damper device for a glove box, the cylinder is fixed to either the glove box side or the instrument panel side, and the other end of the wire wired through the guide cap is connected to the other side. You just fix to.
[0006]
In actual operation, when the glove box is rotated in the opening direction using its own weight, the wire is pulled outward, and accordingly, the piston resists the biasing spring pressure of the compression coil spring. Then, the glove box is allowed to rotate by sliding toward the guide cap side.
However, when the glove box rotates, air is sucked into the cylinder through the air valve through the seat valve orifice due to the sliding of the piston. As a result, a braking force is applied to the sliding movement, so that the opening operation of the glove box is controlled, and it is ensured that the glove box rotates slowly in the opening direction.
[0007]
[Problems to be solved by the invention]
However, under conventional damper devices, the main components are cylinders, pistons, and wires, all of which are independent parts and require a significant number of independent parts as well. Therefore, it goes without saying that the number of parts naturally increases, but in particular, there has been a discomfort that the assembly work of the apparatus itself becomes difficult and costly.
[0008]
In addition, the conventional damper device requires only a relatively small braking force because it can control the opening operation of the glove box by utilizing the negative pressure state in the cylinder as the piston slides. In order to obtain a sufficient braking force, there is a problem that the entire apparatus must naturally be enlarged.
[0009]
[Means for Solving the Problems]
The present invention was developed in order to effectively solve the problems of the conventional damper device, and the damper device according to claim 1 includes a pair of mounting boards that are connected via a central hinge portion. A cylinder part with a compression coil spring arranged on one side of the mounting board is formed, and a piston part that slides under the influence of the compression coil spring in the cylinder part is formed on the other side of the mounting board. The piston part is incorporated in the cylinder part by folding through the central hinge part.
[0010]
According to a second aspect of the present invention, in the damper device according to the first aspect, the cylinder portion is provided with a projection receiver that collides the pressing projection with the outer peripheral surface, and the piston portion is provided with a vent hole on the tip end side. In addition, a seal ring having valve means that contacts and separates from the vent hole by a change in the internal pressure of the cylinder portion is provided.
[0011]
Therefore, in the damper device according to claim 1, the cylinder portion and the piston portion are formed on a pair of mounting substrates connected via the central hinge portion, and when the assembly is performed, the pair of mounting substrates is used. Since the piston part can be automatically assembled into the cylinder part simply by folding the part through the central hinge part, the assembling work is simplified.
[0012]
Further, in the damper device according to claim 2, if a state in which the mounting substrate is fixed to a peripheral member side such as an instrument panel is obtained and the storage box is moved in the opening direction, the storage box side The pressing projection provided on the cylinder collides with the projection receiver of the cylinder portion and moves the cylinder portion in the opening direction of the storage box together with one mounting substrate. As a result, the piston portion has a spring pressure of the compression coil spring. Slide in the cylinder against the above.
Then, the sliding of the piston part increases the internal pressure of the cylinder part, and the valve means of the seal ring closes the vent hole formed on the tip part side of the piston part, so that the inside of the cylinder part is in a positive pressure state. Since the braking force is applied to the sliding of the piston, the opening operation of the storage box is controlled thereby to ensure that the storage box moves slowly in the opening direction.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the damper device according to the embodiment is developed for a glove box that can be opened and closed on an instrument panel of an automobile. However, unlike the prior art, cylinders and pistons are not used independently, and the characteristic feature is that, as shown in FIG. 1B, the cylinder part 3 in which the compression coil spring 4 is arranged inside is formed on one mounting board 1A side, and the influence of the compression coil spring 4 in the cylinder part 3 is formed on the other mounting board 1B side. It is in the point which forms the piston part 5 which receives and slides.
[0014]
This will be described in detail. As shown in the figure, the cylinder portion 3 is integrally projected from the surface of one mounting substrate 1A as a cylindrical body that opens at the tip end and curves with a predetermined curvature, and is formed at one edge of the opening edge. A protrusion receiver 6 that collides with a pressing protrusion provided on the glove box side is provided, and a locking claw 7 that locks a hook-shaped tip portion of a stopper arm described later is provided on the other edge.
[0015]
The piston portion 5 is composed of a rod 8, a cap 9 and a seal ring 10 as shown in FIG. 2, and the first rod 8 is the other mounting substrate as a cross-shaped cross body having a predetermined curvature. A holding cylinder 11 that protrudes integrally from the 1B surface and holds the cap 9 at the tip thereof is defined, and a plurality of slit holes 12 are formed in the holding cylinder 11, and an inner upper portion of each slit hole 12 is formed. It is the structure which provides the lock claw 13 in this.
[0016]
The second cap 9 is formed as a hollow cylindrical body that is open only on the rear end side, provided with an annular flange 14 on the center outer peripheral surface side, and locked on the lock claw 13 on the rear end outer peripheral surface side. While an annular locking shoulder 15 is provided, a circumferential groove 16 is provided on the outer peripheral surface side of the tip to cooperate with the flange 14 to surround the seal ring 10, and the compression coil spring 4 is provided on the front end surface side. A receiving shoulder 17 for receiving the end winding part is defined, and a concave groove 18 for mounting a valve plate of a seal ring 10 to be described later is formed at the center of the tip, and a vent hole 19 is formed on the surface of the concave groove 18. The orifice 20 is formed.
[0017]
The ring portion of the third seal ring 10 is formed of synthetic rubber or a soft resin material, but a metal valve plate 21 having a substantially inverted M shape is integrally provided on one side surface, While the valve plate 21 faces the concave groove 18, the ring portion of the seal ring 10 is locked in the circumferential groove 16, so that the seal ring 10 itself is provided around the distal end portion of the cap 9. At the same time, the valve plate 21 and the edge of the vent hole 19 face each other with a minute clearance, and the valve plate 21 can be brought into contact with and separated from the vent hole 19 by a change in the internal pressure of the cylinder portion 3. ing.
[0018]
Therefore, when the peripheral state of the seal ring 10 with respect to the cap 9 is obtained and the rear end portion of the cap 9 is pushed into the holding cylinder 11 of the rod 8, as shown in FIG. Therefore, the rod 8, the cap 9, and the seal ring 10 are integrated to form the piston portion 5. In the integrated state of the piston portion 5, the orifice 20 itself is always open because the valve plate 21 is set so as not to interfere with the orifice 20.
[0019]
Further, as shown in the figure, the other mounting substrate 1B on which the piston portion 5 is formed is screwed to the mounting arm 1B and a stopper arm 22 that is locked to the locking claw 7 of the cylinder portion 3. It is assumed that a plurality of tapping bosses 23 for projecting are further provided integrally. For this reason, under this embodiment, all except the cap 9 and the seal ring 10 for constructing the piston portion 5 are integrally formed of a synthetic resin material.
[0020]
Therefore, when the damper device having such a configuration is assembled, the above-described integrated state of the piston portion 5 is obtained, and the other attachment to the locking claw 7 of the cylinder portion 3 formed on one attachment substrate 1A. When the pair of mounting substrates 1A and 1B are folded through the central hinge portion 2 until the hook-shaped tip 22a of the stopper arm 22 projecting from the substrate 1B is locked, a pair of mountings are obtained as shown in FIG. At the same time that the substrates 1A and 1B are locked in the folded state, the cap 9 of the piston portion 5 is automatically slidably incorporated into the cylinder portion 3 so that the spring pressure of the compression coil spring 4 is received by the shoulder 17 thereof. It will be received at.
[0021]
Therefore, as shown in FIG. 5, if the other mounting board 1B is screwed to the side of the instrument panel P corresponding to the side surface of the glove box B via the tapping boss 23, the damper device thereby causes the instrument panel P to Easy to attach to the side.
[0022]
And when the lock | rock of a locking means (not shown) is cancelled | released and the glove box B is rotated to an open | release direction using the dead weight, as shown in FIG. The pressing protrusion 24 collides with the protrusion receiver 6 of the cylinder part 3 through the notch part 25 and moves the cylinder part 3 in the opening direction of the glove box B with one mounting substrate 1A. As shown in FIG. 7, the cap 9 of the piston portion 5 slides in the cylinder portion 3 against the spring pressure of the compression coil spring 4.
[0023]
Then, the sliding of the cap 9 of the piston part 5 increases the internal pressure of the cylinder part 3, and the valve plate 21 of the seal ring 10 is bent to open the vent hole 19 formed in the cap 9 of the piston part 5. Since the air in the cylinder portion 3 is only released to the outside through the small orifice 20 by closing, the inside of the cylinder portion 3 is in a positive pressure state, and a braking force is applied to the sliding of the cap 9. The opening operation of the glove box B is controlled to ensure that the glove box B slowly rotates in the opening direction.
[0024]
Therefore, under the present embodiment, unlike the conventional one, the positive pressure state in the cylinder part 3 accompanying the sliding of the cap 9 of the piston part 5 is positively utilized. Even if the size is not increased, a large braking force can be provided by a small device.
[0025]
When the glove box B is closed, the glove box B is now rotated in the reverse direction. When the glove box B is rotated in the reverse direction, the cylinder portion is caused by the spring pressure of the compression coil spring 4. As a result of 3 returning to the initial locked state with one mounting substrate 1A, the cap 9 of the piston portion 5 also slides in the direction opposite to the above-described direction.
Then, the internal pressure of the cylinder portion 3 is reduced, and the change in the internal pressure causes the valve plate 21 to bend and open the vent hole 19 to allow air to flow into the cylinder portion 3. The sliding of the cap 9 of the portion 5 is urged to ensure that the glove box B smoothly rotates in the closing direction.
[0026]
In the embodiment, the damper device is fixed to the instrument panel P side and the pressing projection 24 is provided on the glove box B side. However, one mounting board 1A and the other mounting board 1B are provided. If the damper device is fixed on the glove box B side and the pressing protrusion 24 is provided on the instrument panel P side, the same effect can be expected.
[0027]
【The invention's effect】
As described above, the present invention can greatly simplify the assembly work of the damper device while greatly reducing the number of component parts by adopting the above-described configuration. Since the mounting substrate can be folded and delivered with the piston portion incorporated in the cylinder portion, it is reasonable.
[0028]
Also, under the present invention, it is possible to provide a braking force to the storage box by utilizing the positive pressure state of the cylinder part accompanying the sliding of the piston part. As a result, a large braking force can be provided without increasing the size of the device itself, thereby contributing to a reduction in the size of the damper device.
[Brief description of the drawings]
FIG. 1 is a side view showing a damper device according to an embodiment of the present invention in a state before assembly.
FIG. 2 is an exploded perspective view of a main part showing a structure of a piston part.
FIG. 3 is a cross-sectional view of a main part showing an integrated state of piston portions.
FIG. 4 is a side view showing a part of the assembled state of the damper device.
FIG. 5 is an explanatory view showing a state in which the damper device is fixed to the instrument panel side in relation to the glove box.
FIG. 6 is an explanatory view showing a state in which the glove box rotates in the opening direction and the pressing protrusion collides with the protrusion receiver of the cylinder portion.
FIG. 7 is a cross-sectional view of a main part showing an operating state of the damper device.
[Explanation of symbols]
1A One mounting board 1B The other mounting board 2 Central hinge part 3 Cylinder part 4 Compression coil spring 5 Piston part 6 Protrusion receptacle 7 Locking claw 8 Rod 9 Cap 10 Seal ring 19 Vent hole 20 Orifice 21 Valve plate (valve means)
22 Stopper arm 23 Tapping boss 24 Pressing protrusion B Glove box (storage box)
P instrument panel

Claims (2)

Provided with a pair of mounting boards connected via a central hinge part, a cylinder part is formed with a compression coil spring on one side of the mounting board, and the influence of the compression coil spring on the other side of the mounting board is within the cylinder part. A damper device for a storage box, wherein a piston part is formed that receives and slides, and a pair of mounting substrates are folded via the central hinge part so that the piston part can be incorporated into the cylinder part. The cylinder part is provided with a protrusion receiver that collides with the pressing protrusion on the outer peripheral surface thereof, and the piston part is provided with a vent hole at the tip end side thereof, and a valve that contacts and separates from the vent hole due to a change in the internal pressure of the cylinder part 2. A damper device for a storage box according to claim 1, wherein a seal ring having means is provided around the seal ring.

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