JP2594630Y2 - Structure of glove box lid damper - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a glove box lid damper provided on an instrument panel of a vehicle.

[0002]

2. Description of the Related Art In many cases, a glove box lid is provided with a damper device for damping the lid in order to prevent the lid from opening suddenly or generating an unpleasant impact sound. Such a glove box lid damper is disclosed in Japanese Utility Model Application Publication No.
No. 734 and Japanese Utility Model Application Laid-Open No. 64-53652, and those disclosed in JP-A-59-205007.

[0003]

However, depending on the position of the center of gravity of the glove box lid at the time of closing, the lid may not be opened by its own weight simply by unlocking the lid. That is, as shown in FIG. 9, when the center of gravity G of the lid 30 of the glove box is set in the vehicle forward direction by the X dimension from the hinge center position C of the lid 30 in the closed state, as shown in FIG. 9. Even when the lock of the lid 30 (not shown) is released, the lid 30 is kept closed because the moment in the closing direction (clockwise in the drawing) acts on the lid 30 by its own weight.

In this case, the lid 30 must be pulled in the opening direction. At this time, when the damper is not attached, the lid 30 can be opened with a small force. However, when the damper 31 is installed as shown in FIG. Operability is deteriorated due to the generation of a resistance force.
There is a problem in that the luxury feeling is lost even if the 31 is equipped.

Further, in the damper disclosed in the above-mentioned Japanese Patent Application Laid-Open No. Sho 59-205007, the spring is protruded by a built-in spring. However, in this example, the spring works from a fully closed state to a fully open state. However, there is a problem that the damper mechanism does not work smoothly. Therefore, a projecting device must be provided separately in addition to the damper.
There is a problem that the number of components increases and the device becomes complicated. SUMMARY OF THE INVENTION It is an object of the present invention to provide a glove box lid damper structure that can effectively solve the problems of the conventional damper.

[0006]

In order to achieve the above object , in the invention according to the first aspect , a glove box is provided.
In the structure of the lid damper, the damper
A spring between the ton and the rear wall of the cylinder .
Whether one end of the pulling is on the piston or the rear wall of the cylinder
Only one of them is coaxially fixed along the center axis of the damper.
It has been, glove box lid that opens and closes in the swing
At the beginning of the opening operation of the spring, the other end of the spring is
The piston and cylinder come into contact with the
Apply biasing force in the direction to open the lid between the rear wall and the cylinder.
Occurs, the opening of the lid increases, and the lid
After the opening moment has increased, the spring
The other end is separated from the other of the piston and cylinder rear wall
Characterized by being adapted to.

Further, in order to achieve the above object, the present invention is directed to claim 2
In the device described, the glove box lid
In the structure of the par, the piston of the damper and the syringe
Disposed spring between the walls after loaders, of the spring one
Ends on either the piston or cylinder rear wall only
Is fixed coaxially along the center axis of the damper, the oscillating
The first time the glove box lid opens and closes
The other end of the spring is
And the rear wall of the piston and cylinder
Generates an urging force in the direction to open the lid between the
The opening of the lid increases, and the lid opens in the opening direction due to its own weight.
After the number of contacts increases, the other end of the spring
Separate from the other of the piston and cylinder rear wall
The damper has a one-way valve including a valve body and a spring.
An air damper, wherein the spring and the one-way valve
Means one on the piston and the other after the cylinder
The fact that they are separately fixed to the wall separately
Sign.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a damper according to the present invention will be described below in detail with reference to the drawings. In the present embodiment, as shown in FIG.
It is arranged on the instrument panel 32 of the vehicle,
Similar to the above-described conventional example, it is assumed that the center of gravity G of the lid 30 of the glove box is set in the vehicle forward direction by the X dimension from the hinge center position C of the lid 30 in the closed state. I have.

The damper 1 according to the present embodiment is disposed in an instrument panel 32 at one end of a lid 30 of a glove box, and includes a piston operating portion, a damper portion, an air filter portion, and the like. Consists of 2 and 3
As shown in FIG. 2, in the piston operating portion, a piston 3 is provided in the cylinder 2 to be slidably in contact with the inner wall surface of the cylinder 2 via an O-ring 18.

At one end of the cylinder 2, a front wall (not shown) having a sliding port through which a piston rod 4 connected to the piston 3 can slide freely is formed. At the other end of the cylinder-2, a rear wall 7 having an air flow hole 8 formed in the center is formed, and the piston 3 and the rear wall 7 define a first space 9 inside the cylinder-2. Is defined.

In this embodiment, a spring 40 is provided in the first space portion 9. In this embodiment, when the glove box lid 30 shown in FIG.
Has one end fitted and fixed to a spring mounting boss 41 formed on the piston 3, and the other end merely in contact with the cylinder-rear wall 7.

In the initial stage of the opening operation of the glove sock lid 30, the lid 30 is moved in the opening direction by the urging force of the spring 40, and the position G of the center of gravity of the lid 30 is adjusted to the hinge center of the lid 30. The urging force of the spring 40 is set so that the urging force of the spring 40 becomes zero near the time point when the vehicle moves rearward from the position C.

A second space 10 is formed between the piston 3 and the front wall. The damper portion is formed integrally with the outer portion of the rear wall 7 as a cylindrical member, and a valve 13 is disposed inside the cylindrical portion so as to close the flow hole 8. An orifice 14 is formed at the center of the valve 13 and the first
The space 9 communicates with the third space 11 inside the cylindrical shape. The valve 13 is elastically pressed against the flow hole 8 by a spring 12 as a backup material.

The air filter section comprises a retainer 16 fixed to the outermost periphery of the damper section, and a step formed in the damper section, and forms an air filter 15 made of a porous resin plate. It is configured to be clamped and fixed. Accordingly, the valve 13 and the air filter 15 in the third space portion 11 are both pressed and fixed by the spring 12 by fixing the retainer 16. In addition, the retainer 1
6 is provided with a hole 17. Air filter-15
Is molded from a porous resin material having a number of small pores in the form of cells, and for example, a tetrafluoroethylene resin material is preferable. The air filter 15 circulates air while giving a predetermined resistance through a large number of small holes, finely adjusts a flow amount, and has a predetermined sound absorbing performance by the action of the large number of small bubbles. .

In this embodiment having such a configuration, when the glove box lid 30 is in the closed state and the lock of the push button type or pull handle type lid (not shown) is released, the initial operation of the opening operation is started. In the above, the piston 3 is
The glove box lid 30 is forcibly moved from the closed position shown in FIG. 3 in the opening direction of the glove box lid 30 (to the right in the drawing), and accordingly, the glove box lid 30 starts to open.

During the opening operation of the glove box lid 30 as described above, when the position G of the center of gravity of the lid 30 moves to the vehicle rear side from the hinge center position C of the lid 30, the spring Since the urging force of the spring 40 is set so that the urging force of the spring 40 becomes zero, the spring 40 is fully extended at this time as shown in FIG. 4 and the pressing force on the piston 3 is eliminated. At this stage, since the rotational moment in the opening direction starts to act on the glove box lid 30 due to its own weight, the lid 30 is thereafter smoothly subjected to the normal buffering action by the orifice 14 of the damper-1. Open in the opening direction
As shown in FIG. 5, the piston 3 moves to the open position with the spring 40.

In the closing operation, the piston 3 moves in the opposite direction to the above, and is locked in the closed state shown in FIG. 3 with the original urging force restored to the spring 40. .

Next, FIGS. 6 to 8 explain the operation of the damper 1. First, as shown in FIG. 6, when the piston 3 moves in the opening direction, the first space 9 is not moved. Becomes negative pressure, and the air whose flow rate is finely adjusted by passing through the small hole of the air filter 15 is further discharged to the orifice 1.
4, the movement of the piston 3 can be buffered in two stages, and the air filter 15
By appropriately setting the size of the small holes, the buffering action can be easily finely adjusted. Therefore, the piston 3 receives the buffering action, and the lid 30 moves gradually and smoothly in the opening direction.

On the other hand, when the piston 3 moves in the closing direction, the air in the first space 9 is compressed by the pressing force of the piston 3 into the cylinder 2 as shown in FIG. Then, it passes through the flow hole 8 due to the pressure and attempts to further pass through the orifice 14 of the valve 13. However, since the orifice 14 is a small hole, air cannot pass freely, and the valve 13 is moved in a direction in which air can flow against the spring pressure. Then, when the air in the first space 9 passes through the air filter 15 and is discharged to the outside due to the above state, the pressures in the first space 9 and the third space 11 become substantially the same. The valve 13 again comes into contact with the surface of the rear wall 7 as shown in FIG. .

Since the damper 1 is provided with the air filter 15 via the spring 12, when the valve 13 moves as shown in FIG. Since the air is controlled by the air filter 15, the air is not discharged to the outside instantaneously, and the air pressure in the first space 9 and the third space 11 becomes almost the same in the short term. Then, the air is gradually discharged. Therefore, since the valve 13 returns slowly,
There is no collision with the rear wall 7 and no noise is generated.
That is, since the air filter 15 has a large number of small holes, rapid release of air to the outside can be controlled. Also, even if abnormal noise occurs,
Each small hole of the air filter 15 acts as a sound absorbing material,
The abnormal noise can be effectively blocked from propagating to the outside.

In the above embodiment, the example in which the spring 40 is fixed to the piston 3 is shown. However, the present invention is not limited to this, and the spring 40 may be fixed to the cylinder-rear wall 7 side. Needless to say, various modifications can be made as the backup material 12 without departing from the gist of the present invention. For example, a hard resin washer may be used instead of the above-described spring.

[0022]

[Effect of the invention] According to the invention of claim 1, wherein, can achieve the following effects. (1) The lid can be reliably opened only by releasing the lock by the action of the spring. (2) The lid is opened by the action of the spring until the rotational moment in the opening direction due to its own weight increases to a certain extent, and thereafter the lid opens under its own weight under normal buffering action, so the opening speed is stabilized. It can be. (3) When the opening is more than the predetermined opening, the spring
Is supported on only one of the piston and cylinder rear wall
The other end is not in contact with the other.
The spring resonated due to various vibrations of the car
Even if the other end does not bounce with the other,
No wear occurs. (4) Force and spring in closing direction by damper operation
And the force in the opening direction are opposite to each other,
Since the lid has power after being offset inside the damper,
For example, a conventionally known damper and a conventionally known initial push
This is a problem when the opening devices are separately installed. Lip
The opening / closing operation is stable with no fertile bending
You. (5) Force and spring in closing direction by damper operation
The force in the opposite direction to the opening direction is the same axis of the damper
Work inside the damper.
There is no tangling or tilting between
Crop stabilizes. According to the invention of claim 2, the above claim
The same effect as the device described in Item 1 can be obtained, and
The following effects can be obtained. (6) The spring and the spring are pistons and cylinders
The spring is
When it resonates, the spring resonates under the influence of the vibration,
The operation of the one-way valve is
It may be stable, but in the device described in this claim,
Independently provided, stable operation of the one-way valve
It can be.

[Brief description of the drawings]

FIG. 1 is an explanatory view of an arrangement of a glove sock lid according to an embodiment of the present invention.

FIG. 2 is a partially cutaway explanatory view of a damper according to an embodiment of the present invention.

FIG. 3 is an explanatory view showing a configuration of a damper in a closed state of a glove box lid.

FIG. 4 is an explanatory view showing an operation of a damper during an opening operation of a glove box lid.

FIG. 5 is an explanatory diagram showing an operation of a damper in an open state of a glove box lid.

FIG. 6 is an explanatory diagram showing an operation of a damper.

FIG. 7 is an explanatory diagram showing an operation of a damper.

FIG. 8 is an explanatory diagram showing an operation of a damper.

FIG. 9 is an explanatory diagram showing an arrangement condition of a glove box lid.

[Explanation of symbols]

 G Center of gravity position of lid C Hinge center position of lid 1 Damper 2 Cylinder 3 Piston 4 Piston rod 7 Cylinder rear wall 8 Flow hole 9 First space part, 11 Third space part, 12 Spring (backup material) 13 Valve 14 Orifice 15 Air filter 30 Glove box lid 40 Spring 41 Spring mounting boss

Claims (2)

(57) [Scope of request for utility model registration] 1. The structure of a damper for a glove box lid.
Between the piston of the damper and the rear wall of the cylinder
And one end of the spring is connected to the piston and the rear wall of the cylinder.
Coaxially along the center axis of the damper on only one or the other
The glove box lid that is fixed and swings open and closed
Initially, the other end of the spring is
Elastic contact with the other side of the rear wall of the cylinder, behind the piston and cylinder
An urging force in the direction of opening the lid is generated between the lid and the wall, and the opening of the lid increases, so that the lid is opened in the opening direction by its own weight.
After the increase in the number of
Separated from the other of the piston and cylinder rear wall
Structure of the damper in the glove box lid, characterized in that it was. 2. The structure of a glove box lid damper.
Between the piston of the damper and the rear wall of the cylinder
And one end of the spring is connected to the piston and the rear wall of the cylinder.
Coaxially along the center axis of the damper on only one or the other
The glove box lid that is fixed and swings open and closed
Initially, the other end of the spring is
Elastic contact with the other side of the rear wall of the cylinder, behind the piston and cylinder
An urging force in the direction of opening the lid is generated between the lid and the wall, and the opening of the lid increases, so that the lid is opened in the opening direction by its own weight.
After the increase in the number of
Separated from the other of the piston and cylinder rear wall
The damper has a one-way valve comprising a valve body and a spring.
An air damper, wherein the spring and the one
One-way valve is the piston and the other is the cylinder
-The structure of the glove box lid damper, which is fixed separately to the rear wall .