JP2002106246A - Opening speed restraining structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely restrain a sudden opening operation of an opening and closing member. SOLUTION: The opening and closing member 20 is rockably mounted on a first support shaft provided on a main body 10. A cylinder 31 constituting a damper member 30 is rockably mounted on a second support shaft 12 provided on the main body 10, and a piston 32 freely projected and recessed from the cylinder 31 is rotatably connected to the opening and closing member 20. A coil winding part 41 of a coil spring 40 as an energizing means is externally fitted to the second support shaft 12, one end part 42 extended from the coil winding part 41 is locked on the second support shaft 12, the other end part 43 extended from the coil winding part 41 is locked on the cylinder 31 of the damper member 30, so that resistance moment of the torsion coil spring 40 is applied to the damper member 30. The resistance moment is applied in the reverse direction to the rocking direction of the damper member 30 caused by the opening operation of the opening and closing member 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing device applied to a glove box or a lid provided on an instrument panel of an automobile, and more particularly to a switching device using a piston type air damper to suppress a sudden opening operation. The present invention relates to a switchgear.

[0002]

2. Description of the Related Art In an opening / closing device having an opening / closing member such as a glove box or a lid, a damper member may be provided in order to suppress a sudden opening operation of the opening / closing member. As a damper member used for this type of opening / closing device, a piston type air damper having a configuration in which a piston protrudes and retracts from a cylinder is known, and the damper member is connected between a main body and the opening / closing member, and the opening / closing member is opened. The rapid opening operation of the opening / closing member is suppressed by the resistance force of the piston pulled out during the operation.

More specifically, an opening / closing member is swingable about a support shaft provided on a main body, and a cylinder of a damper member is swingably mounted on the body side of the opening / closing device, while a tip end of a piston is provided. Is rotatably connected to the opening / closing member. With the opening operation of the opening / closing member, the piston is pulled out of the cylinder, but the pulling-out operation causes the inside of the cylinder to be in a negative pressure state and generates a resistance force. This resistance acts on the opening / closing member, and the sudden opening operation is suppressed. Here, since the resistance generated in the piston uses the negative pressure inside the cylinder due to the drawing operation, the larger the amount of the piston drawn out with respect to the unit opening angle (swing angle) of the opening / closing member, the more the resistance becomes. Power grows.

The largest amount of piston withdrawal relative to the unit opening angle (swing angle) of the opening / closing member is when the center axis of the piston is arranged tangentially to the swing trajectory of the opening / closing member. Therefore, if the damper member is arranged so that the center axis of the piston is directed to the tangential direction or a direction close to the swing trajectory of the opening and closing member over the swing range from the opening of the opening and closing member to the open end, the efficiency is improved. In addition, the opening operation of the opening / closing member can be suppressed.

[0005]

However, if there is sufficient space for installing the switchgear,
In the case of an instrument panel or the like of an automobile, it is necessary to install an opening and closing device in a very limited narrow space. Under such conditions, there is often no freedom in arranging the damper members.

For example, many glove boxes and lids have a structure that opens from a vertical position to a horizontal position.
In order for the central axis of the piston to be close to the tangential direction with respect to the swinging trajectory of the opening / closing member, the damper member must be arranged in a horizontal position and extended to the back of the instrument panel. However, there is no depth inside the instrument panel to extend the damper member to the back side. There was a situation that had to be turned near the normal direction. When the damper member is arranged in such a manner, especially at the beginning of opening of the opening / closing member, the amount of pulling out of the piston with respect to the unit opening angle of the opening / closing member is small. There is a disadvantage that an open section is formed.

[0007]

SUMMARY OF THE INVENTION The present invention has been developed in order to effectively solve the problems of the conventional device. The first aspect of the present invention is to use a first support shaft provided on a main body. An opening / closing member swingable about a center, and a swingable centering about a second support shaft provided on the main body, the opening / closing member being connected between the second support shaft and the opening / closing member; A damper member that withdraws a piston from the cylinder along with the operation to apply a resistance force to the opening and closing member, in a direction opposite to the swing direction associated with the opening operation of the opening and closing member with respect to the damper member. A biasing means for providing a resistance moment is provided.

According to a second aspect of the present invention, the resistance moment by the urging means gradually increases with the swing of the damper member in accordance with the opening operation of the opening and closing member. In the opening / closing device, the damper member is moved between the second support shaft and the opening / closing member so that a swing angle of the damper member with respect to a unit opening angle of the opening / closing member is reduced with the closing position of the opening / closing member as a starting point. It is characterized by being connected between.

According to a third aspect of the present invention, based on the first or second aspect, the biasing means is constituted by a torsion coil spring, and a coil winding portion of the torsion coil spring is formed by the second support shaft. And one end extending from the coil winding portion is locked to the main body or the second support shaft, and the other end extending from the coil winding portion is locked to the damper member. Features.

Therefore, according to the first aspect of the present invention,
Since the biasing means for giving a resistance moment in the direction opposite to the swinging direction of the opening and closing member with respect to the damper member, that is, in the direction to close the opening and closing member is provided, when the restraining force by the damper member is small. Also, the rapid opening operation of the opening / closing member can be suppressed by the resistance moment by the urging means. In addition, since the resistance moment in the closing direction is applied to the damper member, rattling of the damper member is prevented, and at the same time, the opening / closing member is urged in the closing direction via the damper member. The opening / closing member is prevented from rattling or chattering.

According to the second aspect of the present invention, as the opening / closing member advances, the swing angle of the damper member increases, and the resistance moment acting on the damper member increases. Symmetrically, the swing angle of the damper member with respect to the unit opening angle of the opening and closing member decreases, so that the damper member slightly swings against the large resistance moment to obtain a sufficient opening angle of the opening and closing member. As a result, a smooth opening operation of the opening / closing member is ensured.

The urging means for generating the resistance moment as described in claim 2 above includes, for example, a spring member whose resistance increases in accordance with the amount of deformation. According to the third aspect of the present invention, among the spring members of this type, a torsion coil spring is particularly used as the urging means, and the coil winding portion is fitted around the second support shaft, so that the installation space can be reduced. It also realizes a compact size that can be used.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an exploded perspective view showing a damper member, which is a main part of an opening and closing device according to an embodiment of the present invention, and a biasing means thereof, and FIG. 2 is a side view of the same. The opening / closing device includes a main body 10, an opening / closing member 20 such as a glove box, a damper member 30, and a torsion coil spring 40 as urging means. The main body 10 is formed of, for example, a frame incorporated in an instrument panel of an automobile, and the opening / closing member 20 is centered on a first support shaft (not shown in FIGS. 1 and 2) provided at a lower portion of the main body 10. It is supported swingably.

The damper member 30 employs a piston type air damper in which a piston 32 protrudes and retracts from a cylinder 31. A negative pressure is generated in the cylinder 31 with the withdrawal operation of the piston 32, and this negative pressure is applied to the piston 32. It is configured to provide resistance. This resistance increases in accordance with the amount of withdrawal of the piston 32.

At the base end and the tip end of the cylinder 31, mounting pieces 33, 34 having mounting holes 33a, 34a, respectively, are provided so as to protrude in the same direction. And is fitted to the second support shaft 12 swingably and provided with a fastener 13 such as a screw to prevent the second support shaft 12 from coming off. On the other hand, a mounting piece 34 formed at the tip of the piston 32 is attached to a support shaft 2 protruding from a side surface of the opening / closing member 20.
1 to be rotatably connected.

As described above, the second support shaft 12 and the opening / closing member 20
The damper member 30 connected between the opening and closing member 20 is disposed substantially downward when the opening and closing member 20 is in the closed position. Further, even when the opening and closing member 20 swings due to the opening operation of the opening and closing member 20, the piston 32 moves forward of the main body 10. Drawn out. Therefore, it is possible to incorporate the device into a narrow space such as an instrument panel without considering the rear space.

A coil winding 41 of the torsion coil spring 40 is externally fitted to the second support shaft 12 before the mounting piece 33, and one end 42 extending from the coil winding 41. Is locked in a locking groove 12 a formed in the second support shaft 12, and the other end 4 extending from the coil winding portion 41.
3 is locked in the mounting hole 34a of the mounting piece 34 provided at the tip of the cylinder 31 to give the damper member 30 a resistance moment. This resistance moment acts in a direction opposite to the swing direction of the damper member 30 accompanying the opening operation of the opening / closing member 20. Therefore, even in a stationary state, the damper member 30 is prevented from rattling by the action of the resistance moment, and at the same time, the opening / closing member 20 is connected via the damper member 30.
Is also biased in the closing direction, so that the opening / closing member 20 is prevented from rattling or chattering due to external vibration or the like.

The opening / closing member 20 is opened from the closed position in the direction (clockwise) indicated by the arrow a in FIG. 2 (clockwise). In conjunction with this opening operation, the damper member 30 is moved in the direction indicated by the arrow b in FIG. (Clockwise). Due to this swing, the coil winding part 41 of the torsion coil spring 40 is twisted, so that the resistance moment to the damper member 30 gradually increases.

As shown in FIG. 3, when the opening / closing member 20 starts the opening operation from the closed position about the first support shaft 11 as shown in FIG. Swings about the second support shaft 12, and the piston 32 is pulled out of the cylinder 31.

FIG. 4 is a diagram schematically showing the relationship between the opening angle of the opening / closing member 20, the swing angle of the damper member 30, and the amount of extraction of the piston 32 at this time. As described above, when the opening / closing member 20 is in the closed position, the damper member 30 arranged substantially downward has the center axis of the piston 32 substantially in the normal direction with respect to the swing trajectory of the opening / closing member 20. (I in FIG. 4).

From this position, when the opening / closing member 20 is opened by the unit opening angle θ, the swing angle of the damper member 30 is ω ₁ ,
Withdrawn amount of the piston 32 is _{L 1.} Subsequently, when the opening / closing member 20 is opened by the unit opening angle θ, the swing angle of the damper member 30 is ω ₂ , and the amount of pull out of the piston 32 is L ₂ . Further, when the opening / closing member 20 is opened by the unit opening angle θ, the swing angle of the damper member 30 is ω ₃ , and the withdrawal amount of the piston 32 is L ₃ . In this process, the opening / closing member 20
Since the center axis of the piston 32 member gradually becomes tangential to the swing trajectory, the swing angle of the damper member 30 gradually decreases (that is, ω ₁ > ω ₂ > ω ₃ ), and The amount of withdrawal of the piston 32 increases (that is, L
_{1 <L 2 <L 3)} .

[0022] Thus, in the vicinity of the opening and closing member 20 has opened starts operating, because the pull-out amount L ₁ of the piston 32 relative to the opening angle units of the member 20 theta is small, the damper member 3
The effect of suppressing the opening operation by 0 is small. However, in the opening and closing device of the present embodiment, since the resistance moment by the torsion coil spring 40 acts on the opening and closing member 20 via the damper member 30, even near the start position of the opening operation,
The opening moment of the opening / closing member 20 is suppressed by the resistance moment.

In the vicinity of the open end of the opening / closing member 20, the piston 32
Since the pull-out amount L ₃ becomes many, it is possible to obtain the effect of suppressing sufficient opening operation by the damper member 30. On the other hand, when the opening / closing member 20 swings to near the open end, the damper member 30 also swings greatly (ω ₁ + ω ₂ +
ω ₃ ), the resistance moment due to the torsion coil spring 40 increases. However, in this vicinity, the opening / closing member 20 is largely opened with respect to the slight swing ω ₃ of the damper member 30, so that the increase in the resistance moment by the torsion coil spring 40 has little effect on the opening operation of the opening / closing member 20.

The present invention is not limited to the embodiment described above. For example, even if a piston type air damper is employed as a damper member, the piston 32
May be attached to the second support shaft 12 and the cylinder 31 may be connected to the opening / closing member 20, and if necessary, other urging means such as a tension coil spring or rubber may be used.

[0025]

As described above, according to the opening / closing device of the present invention, the urging means for imparting a resistance moment to the damper member in the direction opposite to the swinging direction accompanying the opening operation of the opening / closing member is provided. Therefore, even when the restraining force by the damper member is small, the sudden opening operation of the opening and closing member can be suppressed by the resistance moment by the urging means.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a damper member, which is a main part of an opening and closing device according to an embodiment of the present invention, and a biasing means thereof.

FIG. 2 is a side view of the same.

FIG. 3 is a side view showing the operation of the switchgear according to the embodiment of the present invention.

FIG. 4 is a diagram schematically showing the operation of the opening and closing device shown in FIG. 3;

[Explanation of symbols]

 10: Main body 11: First support shaft 12: Second support shaft 12a: Locking groove 13: Fastener 20: Opening / closing member 21: Support shaft 30: Damper member 31: Cylinder 32: Piston 33, 34: Mounting piece 33a, 34a: mounting hole 40: torsion coil spring 41: coil winding

Claims (3)

[Claims] An opening / closing member which is swingable about a first support shaft provided on a main body, and which is swingable about a second support shaft provided on the main body, wherein the second support shaft is provided. And a damper member that is connected between the opening and closing member and a piston is pulled out of a cylinder along with the opening operation of the opening and closing member, and applies a resistance force to the opening and closing member. An opening / closing device, characterized in that there is provided an urging means for applying a resistance moment in a direction opposite to a swinging direction accompanying the opening operation of the opening / closing member. 2. The opening / closing device according to claim 1, wherein the resistance moment by said urging means gradually increases as the damper member swings according to the opening operation of the opening / closing member. The damper member is connected between the second support shaft and the opening and closing member so that a swing angle of the damper member with respect to a unit opening angle of the opening and closing member is reduced from a closing position as a starting point. Switchgear. 3. The opening / closing device according to claim 1, wherein the urging means is constituted by a torsion coil spring, and a coil winding portion of the torsion coil spring is fitted around the second support shaft and a coil is provided. An opening and closing device, wherein one end extending from a winding portion is locked to the main body or the second support shaft, and the other end extending from the coil winding portion is locked to the damper member.