JPH0351204Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a damper opening/closing mechanism for an air outlet in an automobile or the like.

(Prior Art) A ventilation hole for ventilation and air conditioning of the vehicle interior is provided in or near the instrument panel in front of the front seat of an automobile. This ventilation hole is usually constructed by fitting a cylindrical or box-shaped plastic molded product into the air outlet, and this cylindrical or box-shaped molded product is called an air outlet. This air outlet may be individually provided with a damper (wind door) that switches the ventilation or controls the amount of ventilation at the ventilation opening. In this case, the damper is generally controlled by rotating the damper by operating a control lever pivotally mounted on the outer wall of the air outlet and controlling its ventilation opening.

Incidentally, it is preferable that the ventilation opening degree of the damper can be freely adjusted to any angle depending on the conditions within the vehicle interior or the passenger's preference, and a sense of moderation (a certain operating load) is required when operating the lever. However, most of the conventional damper opening/closing mechanisms of this type have two-stage control of fully open or fully closed, or a three-stage control of half-opening, and the moderation of the lever operation during that time is due to the elasticity of the spring. I relied on strength.

Of course, there are many ways to solve this level of technical problem with the current technological progress, but the problem is how to solve it simply and inexpensively, given the nature of damper control in individual air outlets. The question is whether to do so.

(Problem to be solved by this invention) Therefore, this invention provides a damper opening/closing mechanism for an air outlet that can freely adjust the ventilation opening of the damper to any position without using resilient members such as springs. The purpose is to provide.

In addition, this invention provides a sense of moderation when operating the lever when the damper's ventilation opening is controlled step by step to a predetermined position, and the lever position can also be adjusted in the middle of each step if necessary. The purpose is to provide a structure that can be stopped.

Furthermore, this invention provides a damper opening/closing mechanism that does not use a conventional spring, has a simple structure, can withstand frequent use, has few failures, and is also economical.

(Means for Solving the Problems) That is, in this invention, a control lever is pivotally mounted on the outer wall of the air outlet, and the operation of the lever rotates a damper in the air outlet to adjust its ventilation opening degree. In the air outlet, a hollow protrusion is integrally provided on the outer wall of the air outlet at the operation locus position of the tip of the operating lever, and a hollow protrusion protrudes from the inner wall of the outlet, and a side surface of the protrusion is attached to the tip of the lever. The present invention relates to a damper opening/closing mechanism for an air outlet, characterized in that the damper is formed as a frictional oscillating surface that slides in pressure contact with the damper.

(Example) To specifically explain the attached drawings above,
FIG. 1 is an overall perspective view of an air outlet 10 for an automobile showing an embodiment of this invention, and is shown with reference numeral 1.
1 is a cylindrical main body, 12 is an air outlet, 13 is an outside air duct connection port, 14 is an air conditioning duct connection port, 15 is a wind direction adjustment fin provided at the air outlet 12, 16 is a damper, 17 is its shaft, and 20 is a damper This is an operating lever for opening and closing.

This air outlet has an operating lever 20 pivotally attached to the outer wall 11a of the air outlet main body via a shaft 21, and the operation of the lever 20 rotates the damper 16 in the air outlet to adjust its ventilation opening degree. It was made so that it could be done. When the lever 20 is actuated in the direction of the arrow x, the damper 16 rotates in the direction of the arrow y and becomes fully open as shown by the chain line in the figure.

Since FIG. 2 is a front view showing an enlarged view of the main parts in FIG. 1, the opening/closing mechanism of the present invention will be explained with reference to this diagram.

That is, the main feature of this invention is that the damper is rotationally controlled by the operation of the above-mentioned operating lever, and the air outlet outer wall 11a is
A hollow protrusion 30 is integrally provided to protrude from the inner wall side of the outlet at the operating locus position of the tip 22 of the operating lever 20, and the lever tip 22 slides by pressing against the side surface of the protrusion. Friction sliding surface 3
It is because it was formed as 1.

In other words, the damper 16 has a connecting culm 19 as shown in FIG. 5, and is configured to move together with the operating lever 20 by coupling the connecting culm 19 with the lever groove 25. However, the lever tip 22 has a protrusion 30 formed at its operating locus position.
By sliding in pressure contact with the damper, it creates frictional resistance and creates an appropriate sense of moderation when operating the lever.This frictional resistance also makes it possible to stop the lever at any position, that is, to stop the damper at any opening. It will become.

Reference numeral 35 in FIG. 2 is a guide groove provided in the outer wall 11a for the connecting culm 19.

Note that depending on the strength of the pressure contact between the frictional sliding surface 31 of the protrusion 30 and the lever tip 22, the lever may be stopped at any position due to strong frictional resistance, which may vary from a light sense of moderation that does not stop the lever. Needless to say, the design will be made as necessary, even if it is possible to do so.

In addition, as shown in the figure, the sliding surface 31 of the lever tip 22 of the protrusion 30 is provided with appropriate intervals, for example, concave portions 32 and 3 that serve as a guide for fully open, half open, and fully closed.
2 and 32 is actually convenient even if the lever 20 is configured to be able to stop at any position.

3 is a cross-sectional view taken along the line 3-3 in FIG. 2, with the lever tip 22 fitted into the concave portion 32 of the protrusion 30, and FIG. 4 is a cross-sectional view taken along the line 4-4 in FIG. The figure shows a state in which the lever tip 22 is in pressure contact with the sliding surface 31 of the protrusion 30.

Further, as can be understood from the cross-sectional views of FIGS. 2 and 3, the protrusion 30 protrudes from the inner wall of the outlet, is integrally formed with the outer wall 11a, and is hollow inside.

(Function/Effect) As shown and explained above, in this invention, a control lever is pivotally mounted on the outer wall of the air outlet, and the operation of the lever rotates the damper inside the air outlet to control its ventilation opening. A hollow protrusion is integrally provided on the outer wall of the air outlet at the operation locus position of the tip of the operating lever, and a hollow protrusion is integrally provided from the inner wall of the outlet, and a side surface of the protrusion is attached to the lever. The tip is formed as a frictional sliding surface that slides with pressure contact, and the frictional resistance accompanying the pressure contact of the frictional sliding surface allows the control lever to feel moderate and to be able to stop at an intermediate position of the control lever. As a result, it became possible to achieve the intended purpose with an extremely simple structure.

In addition, since the hollow protrusion is integrally molded at the same time as the plastic air outlet body, it is easy to manufacture, and the operating lever is also usually made of a plastic molded product. The elasticity of the plastic and the hollow protrusions makes it possible to provide a control mechanism that is comfortable to use without using any special elastic members such as springs.

In addition, this invented structure has a small number of parts and is easy to assemble due to the above-mentioned points, making it excellent in economy and durability, and has extremely practical utility value. There is something big.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view of an air outlet for an automobile showing an embodiment of this invention, Fig. 2 is an enlarged front view of its main parts, and Fig. 3 is a sectional view taken along line 3-3 in Fig. 2. 4 is a sectional view taken along line 4--4 in FIG. 2, and FIG. 5 is a partial perspective view of the damper in FIG. 2. 10...Automotive air outlet, 16...
Damper, 19...Connection culm, 20...Operation lever,
22... Lever tip, 25... Lever groove, 26
... Connecting culm, 30 ... Protrusion, 31 ... Friction sliding surface, 32 ... Concave portion.

Claims (1)

[Claims for Utility Model Registration] 1. A control lever is pivotally mounted on the outer wall of the air outlet, and the operation of the lever rotates a damper inside the air outlet to adjust its ventilation opening degree. A hollow protrusion is integrally provided on the outer wall of the air outlet at the operating locus position of the tip of the operating lever from the inner wall of the outlet, and the tip of the lever presses against the side surface of the protrusion and slides. An air outlet damper opening/closing mechanism characterized by being formed as a moving friction sliding surface. 2. A damper opening/closing mechanism for an air outlet according to claim 1, which has concave portions at appropriate intervals on the friction sliding surface of the protruding portion.