JP2599770Y2 - Lever support structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lever support structure for supporting a lever used in a device including various mechanical elements such as a heater control device for a vehicle.

[0002]

2. Description of the Related Art Heretofore, lever support structures for supporting a lever have been used in various devices including mechanical elements such as a heater control device for a vehicle. FIG. 7 is a front sectional view of a lever support structure conventionally used. In FIG. 7, a pair of elastic legs 202 having claws 207 on the outside are erected on a base member 201 serving as a base of the lever supporting structure.
2, a circular rib 203 is provided upright.
On the other hand, a knob 206 is fixed to one end of the lever 208, and a wire 205 for operating an operated member (not shown) is connected to the other end. Also, lever 208
Is formed with a circular rib 204 engaging with the rib 203.

When the lever 208 is supported by the elastic leg 202, the hole 209 of the lever 208 is brought into contact with the upper portion of the elastic leg 202 and then pushed downward, that is, in the direction of the base member 201. At this time, the two elastic legs 202 bend inward, so that the two elastic legs 202 are inserted into the holes 209. Thus, as shown in FIG. 7, the lever 208 is mounted at a position where it comes into contact with the rib 203, and is rotatably supported.

[0004]

Since the conventional lever support structure is constructed as described above, when the lever 208 is pulled upward, that is, in the direction opposite to the base member 201,
As shown in FIG. 8, there is a problem that the elastic leg 202 is bent inward and the lever 202 is easily detached.

The present invention has been made in view of the above problems, and has as its object to provide a lever support structure in which the lever cannot be easily released.

[0006]

According to the present invention, there is provided a lever support structure in which a pair of elastic legs having a claw portion which engages with a hole formed in a lever to make the lever outside the lever is provided upright on a base member. In the supporting structure, the base member between the pair of elastic legs prevents the pair of elastic legs from abutting each other, and the force is applied to the claw portion in a direction opposite to the direction of the base member. A projection member is provided for causing the distal end of the elastic leg to abut and acting in a direction to spread the claw portion, and the claw portion has an inclined surface that abuts the hole and flexes the elastic leg inward. The diameter of the hole is larger than the distance between the outer surfaces of the claws when a force in the direction of the base member is applied to the pair of elastic legs to engage the lever. Opposite to the base member on the pair of elastic legs It is characterized in that the force is smaller than the distance between the outer surfaces of the pawls when applied.

[0007]

When the lever is engaged, the hole of the lever is brought into contact with the pair of elastic legs to apply a force in the direction of the base member.
At this time, since the diameter of the hole is larger than the distance between the outer surfaces of the claws of the pair of elastic legs, the hole passes through the claws,
The lever engages the elastic leg. On the other hand, when the lever is to be released, a force in a direction opposite to the direction of the base member is applied to the pair of elastic legs. At this time, the two elastic legs abut the projection member. Since further bending is restricted at the position, the distance between the outer surfaces of the claws is not smaller than the diameter of the hole, and the lever is not easily detached.

[0008]

FIG. 1 is a plan view showing an embodiment of the present invention, and FIGS. 2 and 3 are sectional views taken along line AA and line BB, respectively.
It is sectional drawing. It shows an example best used for a heater control device for a car. 1 to 3, a base 101 serving as a base of a lever support structure has a claw 107 having an inclined surface that becomes wider toward a root at a tip end thereof.
Are provided upright. At the center of the two elastic legs 102, to prevent the elastic legs 102 from contacting each other and to restrict a predetermined or more deflection,
A substantially “D” -shaped projection member 104 is provided upright.

The outer surface 103 of the elastic leg 102 and the projection member 1
The outer side surfaces 105 and 106 of 04 form an arc of the same circle as shown by a broken line. The elastic leg 102 is formed of resin and is configured to bend in the radial direction of the circle. Further, a circular rib 111 constituting a concentric circle with the circle is provided on the base 101 member so as to surround the elastic leg 102 and the projecting member 104. FIGS. 4 to 6 are views for explaining the operation of the lever support structure shown in FIGS. 1 to 3, and all show cross-sectional views corresponding to FIG.

Hereinafter, this embodiment will be described in detail with reference to FIGS. In order to support the lever 108 with the elastic leg 102, the hole 109 of the lever 108 is
The base member 1 is brought into contact with the inclined surface of the claw 107 of the base member 1.
Press down in the 01 direction. At this time, since the elastic legs 102 are bent inward with the base side as a fulcrum due to the force from above, the inner side surfaces of the distal ends of both the elastic legs 102 and both side surfaces of the projection member 104 abut. When further depressed, as shown in FIG. 4, the elastic leg 102 bends inward with the inner surface of the tip in contact with the projection member 104 as a fulcrum. At this time, since the distance between the outer surfaces 110 of the two elastic legs 107 is configured to be slightly smaller than the diameter of the hole 109, the claw 107 is
9, the lever 108 engages the elastic leg 102.
At this time, the lever 108 is held at a position where it comes into contact with the rib 111, and the rib 111 is rotatably fitted to a circular rib 112 formed on the lever 108. Thus, the lever 108 is mounted as shown in FIG. 5, and the lever 108 is rotatably supported.

On the other hand, when the lever 108 is to be disengaged from the state shown in FIG. 5, a force for lifting the lever 108 upward, that is, a force in a direction opposite to that of the base member 101 acts, and as shown in FIG. Since the leg 102 bends inward with the root side as a fulcrum, the inner side surfaces of the distal ends of both elastic legs 102 and both side surfaces of the projection member 104 abut. When the elastic legs 102 are further detached, the elastic legs 102 act in a direction of bending outward with the inner side surface of the distal end in contact with the protrusion member 104 as a fulcrum. A gap is created and the distance between the outer surfaces 110 of
Is larger than the diameter of the lever 108, the lever 108 does not easily come off.

As described above, according to this embodiment, the projection 10 is provided between the pair of elastic legs 102 to prevent the pair of elastic legs 102 from contacting each other.
9 is larger than the distance between the outer surfaces 110 of the claws 107 when a force is applied to the pair of elastic legs 102 in the direction of the base member 101. Each claw 107 when a force in the opposite direction is applied
Since the distance between the outer surfaces 110 is smaller than the distance between the outer surfaces 110, it is possible to prevent the lever 108 from easily detaching. Also, the outer surface 103 of each elastic leg 102
Since the outer surfaces 105 and 106 of the projection member 106 form the same circular arc, the turning operation of the lever 108 is smoothly performed. In this embodiment, the base member 101
Is used, but it is not always necessary to use a flat plate. In this embodiment, the example of the supporting structure of the rotating lever is shown, but the present invention can be applied to the supporting structure of the non-rotating lever.

[0013]

The lever support structure of the present invention prevents the pair of elastic legs from abutting each other on the base member between the pair of elastic legs, and applies a force to the claw portion in a direction opposite to the base member. Is provided, a protrusion member is provided to act in a direction in which the tip of the elastic leg abuts and spreads the claw portion,
The claw portion is formed with an inclined surface that abuts the hole to bend the elastic leg inward, and the diameter of the hole is adjusted by a force in the direction of the base member toward the pair of elastic legs to engage the lever. Is larger than the distance between the outer surfaces of the claw portions when the claw portions are applied, and the claw portions when a force in a direction opposite to the base member is applied to the pair of elastic legs to release the lever. Because it is formed smaller than the distance between the outer surfaces of
After contacting the hole of the lever with the inclined surface of the claw of the elastic leg,
The lever can be engaged and supported by one operation of merely pressing down toward the base member, and the lever can be prevented from easily detaching.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a sectional view of the embodiment shown in FIG.

FIG. 3 is a sectional view taken along line BB of the embodiment shown in FIG. 1;

FIG. 4 is a sectional view for explaining the operation of the embodiment of the present invention;

FIG. 5 is a sectional view for explaining the operation of the embodiment of the present invention;

FIG. 6 is a sectional view for explaining the operation of the embodiment of the present invention;

FIG. 7 is a sectional view of a conventional lever support structure.

FIG. 8 is a cross-sectional view for explaining the operation of the conventional lever support structure.

[Explanation of symbols]

 101: Base member 102: Elastic leg 103: Claw portion 104: Projection member 108: Lever 109: Hole 110: Outside surface

Claims (1)

(57) [Scope of request for utility model registration] 1. A lever support structure comprising: a pair of elastic legs provided on a base member, the pair of elastic legs each having a claw portion engaging with a hole formed in a lever to make the lever outer. The base member prevents the pair of elastic legs from abutting each other, and when a force in a direction opposite to the base member is applied to the claw portion, the distal end of the elastic leg abuts to cause the claw portion to contact. A projection member is provided to act in the expanding direction. The claw portion is formed with an inclined surface that abuts the hole and deflects the elastic leg inward. The diameter of the hole is set to engage the lever. The distance between the outer surfaces of the claws when the force in the direction of the base member is applied to the pair of elastic legs is larger than the distance between the outer surfaces of the respective claw portions. Outer surface of each of the claws when a directional force is applied A lever support structure characterized by being formed smaller than the distance between them.