JPH0751369Y2 - Vehicle ventilator opening and closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial Application Field >> The present invention relates to a structure for adjusting the air flow rate of a ventilator used for a vehicle such as an automobile.

<< Prior Art >> As shown in FIGS. 6 to 9, as an opening / closing mechanism of a valve shutter of a vehicle ventilator, an operation dial 1 and a rotating shaft 3 of a valve shutter 2 are connected by a connecting rod 4. It is known that a valve mechanism opens and closes a valve shutter. However, due to the layout of the vehicle equipment, the rear air conditioning case body 6 may have to be tilted laterally with respect to the ventilator front air conditioning case body 5, and in this case, it is disclosed in Japanese Utility Model Publication No. 58-45. The existing mechanism is used. That is, as shown in FIG. 10 to FIG. 12, when the rear air conditioning dike 6'is inclined with respect to the front air conditioning duct 5 ', the operating lever 7 is projected from the narrow slit 9 of the front panel 8, A crank mechanism 12 which is supported by a rotary shaft 10 parallel to the front panel 8 and which is directly connected to the rotary shaft of a shutter valve 11 provided in a rear air conditioning duct 6'is provided with a crank pin 12a through which an operating lever 7 is inserted. It is engaged with the hole 13.

<Problems to be Solved by the Invention> In the former type of such a conventional valve shutter opening / closing mechanism, since the operation dial 1 is used, there are few portions protruding to the front surface of the panel, which is advantageous in terms of safety measures. On the other hand, when the rear air conditioning case body 6 is tilted laterally with respect to the front air conditioning case body 5, the link mechanism interferes with the fulcrums at both ends of the connecting rod 4 and cannot operate. Further, in the latter one, although the operation lever 7 can move linearly along the slit 9 in spite of the bent air-conditioning duct, the operation lever 7 is bent, so that the force is transmitted. The efficiency is low, and therefore excessive torque is generated, which may cause breakage when the operating lever is thin.

Therefore, the object of the present invention is to provide a ventilator for a vehicle that has a durable operation even if it has a shape in which a rear air conditioning case body tilted to the side is integrally connected to a front air conditioning case body. It is to provide a switchgear.

<Means for Solving the Problems> The opening / closing device for a ventilator for a vehicle according to the present invention has a shutter valve actuating dial provided with a slit located on a side of a finisher that surrounds an outlet of a ventilator housing equipped with wind direction adjusting blades. Slightly protruding the operating part,
In a vehicle ventilator in which the center of this dial is pivotally attached to the side of the front air conditioning case body, the rear air conditioning case body which is inclined sideways with respect to the front air conditioning case body is integrally connected, and the rear air conditioning case body is connected. The body is equipped with a shutter valve, and an arm portion is provided at a right angle at the end of its rotating shaft, and a linking fulcrum at its tip and a connecting fulcrum of the dial are connected to both ends of a connecting rod to form a link mechanism. In the construction, retaining spheres are respectively projected from the raised curved surfaces at both ends of the connecting rod through a constricted part, and the constricted part is formed in a notch elastic hole formed at each of the connecting fulcrum of the arm part and the connecting fulcrum of the dial. A raised curved surface is fitted on the side of the connecting rod around the cutout elastic hole, and a curved surface is formed on the side of the sphere around the cutout elastic hole, with the gap between the sphere and the sphere starting from the contact point with the sphere. Be prepared.

<Operation> In order to configure the link mechanism of the device according to the present invention, the elastic holes are formed by expanding the notches of the elastic holes provided at the connecting fulcrums of the dial and the connecting fulcrum of the arm with the constricted portions at both ends of the connecting rod. It is sufficient to fit one to each. The surfaces where the connection fulcrums at both ends of the connection rod and the periphery of the elastic hole of the dial and the arm are joined are raised, and a curved surface having a larger curvature is formed on the spherical side around the elastic hole. , Even if the members that make up the link mechanism intersect in a plan view, they do not cause any interference, so if you operate the dial with your finger, the shutter valve will move from the horizontal state (fully open) to the vertical state (fully closed). ) Can be adjusted steplessly and smoothly.

<< Embodiment >> FIGS. 1 to 5 show an embodiment of the present invention. A ventilator housing 20 includes a front louver 21 and wind direction adjusting blades 22 therein, and is rotatably mounted on a side wall of a front air conditioning case body 23. Reference numeral 24 is a flange-shaped phoenixer that surrounds the outlet of the ventilator housing 20, and has a substantially rectangular shape, and a slit 25 is formed on the side. 26 is a dial for operating the shutter valve, and its operating portion 26 'is a slit.
Projected slightly above 25. 27 is a boss protruding from the side wall of the front air conditioning case body 23, and has a bush 28 with a flange in the center.
Is fitted. The center of the dial 26 is axially supported by a bush 28, and the screw 28 'is screwed into the boss 27 to increase the contact pressure of the flange of the bush 28. Reference numeral 29 denotes a rear air conditioning case body, which is integrally connected to the front air conditioning case body 23 with a lateral inclination. Reference numeral 30 denotes a shutter valve, one end of which is provided with a support shaft 31 and the other end of which is provided with a rotation shaft 32, and which is axially supported by the side wall of the rear air conditioning case body 29, from a horizontal state (fully open) to a vertical state (fully closed). It rotates 90 degrees up to. 33
Is an arm portion, which is provided in a crank shape at a right angle from the rotary shaft end 32a, and serves to open and close the shutter valve. Reference numeral 34 denotes a connecting rod, and both ends 34a, 34b thereof form a link mechanism by connecting the connecting fulcrum 26a of the dial and the connecting fulcrum 33b of the arm portion 33. 3 to 5 show an enlarged main part of the link mechanism. FIG. 3 is an enlarged cross-sectional view of the portion A in FIG. 1, in which a protruding portion 35a is formed at one end 34a of the connecting rod 34, and a retaining ball 37a is integrally formed through a constricted portion 36a. Similarly, the other end 34b of the connecting rod 34 has a raised portion 3
5b is formed, and the retaining sphere 3 is formed through the constricted portion 36b.
7b is integrally formed. A notched elastic hole 38 as shown in FIG. 5 is formed at the connection fulcrum 26a of the dial, and a constricted portion 36a is fitted from the notched portion 38a of the elastic hole while expanding the elastic hole 38. Raised curved surface on the side of the connecting rod of the elastic hole 38.
39a is formed, and a curved surface 40a having a larger radius of curvature is formed on the retaining sphere side of the elastic hole 38. As shown in FIG. 5, a notch elastic hole 41 is also formed at the connecting fulcrum 33b of the arm portion 38, and the constricted portion 36b is fitted from the notch portion 41b of the elastic hole while expanding the elastic hole 41. Elastic hole 4
A raised curved surface 39b is formed on the connecting rod side of 1 and a curved surface 40b having a larger radius of curvature is formed on the retaining sphere side. As a result, the curved surface 40a of the raised curved surface 39a and the raised curved surface 39a
The curved surface 40b of b has a shape in which the gap between the spherical bodies 37a and 37b is gradually expanded with the contact points with the retaining spherical bodies 37a and 37b as starting points.

<Effect of the Invention> Since the opening / closing device of the ventilator for a vehicle according to the present invention has a structure in which the rear air conditioning case body tilted to the side is integrally connected to the front air conditioning case body, Although the connecting rod, the dial and the arm section are assembled in such a manner that they cross each other, one end of the connecting rod and the connecting fulcrum of the dial are joined to each other by a raised curved surface, and the other end of the connecting rod and the arm are joined together. Since the connecting fulcrums at the tips of the parts are joined to each other by the raised curved surface, the adjacent members do not interfere with each other. Further, since the curved surface around each notched elastic hole that is in contact with the retaining sphere has a curved surface with a larger radius of curvature than the sphere, the retaining sphere does not interfere with adjacent members. Therefore, the link mechanism can be operated lightly when the dial operation portion is operated with a fingertip, and the opening / closing operation of the shutter valve can be smoothly performed. In addition, since it is operated by a dial, fine adjustment can be performed.

According to the present invention, all the above members can be manufactured by injection molding of synthetic resin, and the assembly of the link mechanism can be easily performed by the operation of press-fitting the constricted portion into the cutout elastic hole. Therefore, the link mechanism does not come off during the normal shutter valve opening / closing operation.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG. 5 show an embodiment of an opening / closing device for a ventilator for a vehicle according to the present invention. FIG. 1 is an overall cross-sectional plan view, and FIG. FIG. 3 is an enlarged cross-sectional view of the portion A in FIG. 1, FIG. 4 is an enlarged sectional view of the portion B in FIG. 1, and FIG. 5 is a plan view of the notched elastic hole. FIGS. 6 to 9 show a first comparative example of the prior art. FIG. 6 is an overall cross-sectional plan view, FIG. 7 is a perspective view seen obliquely from the front, and FIG. 8 is FIG. 6A. FIG. 9 is an enlarged cross-sectional view of a portion B in FIG. 10 to 12 show the second example of the prior art.
FIG. 10 shows a comparative example, and FIG.
FIG. 11 is a front view with a part omitted, and FIG. 12 is a side view of the same. 21,22 …… Wind direction adjusting blade, 20 …… Ventilator housing, 24 …… Finisher, 25 …… Slit, 30 …… Shutter valve, 26 …… Dial, 23 …… Front air conditioning case body, 29 …… Rear Air conditioning case body, 32a ... Rotating shaft end, 33 ...
… Arm part, 33b …… Connecting fulcrum of arm part, 26a …… Connecting fulcrum of dial, 34 …… Connecting rod, 35a, 35b …… Raised curved surface of connecting rod, 37a, 37b …… Prevention ball, 36a, 36b ...... Constricted part, 38,41 ...... Notched elastic hole, 39a, 39b ...... Raised curved surface, 40
a, 40b ... curved surface.

Claims (1)

[Scope of utility model registration request] 1. An operating portion of a shutter valve actuating dial is slightly protruded from a slit located on a side of a finisher surrounding an outlet of a ventilator housing provided with wind direction adjusting vanes, and the center of the dial is frontward. In a vehicle ventilator pivotally attached to a side of an air conditioning case body, a rear air conditioning case body tilted laterally to a front air conditioning case body is integrally connected, and this rear air conditioning case body is provided with a shutter valve, An arm portion is provided so as to project at a right angle from the end of the rotating shaft, and the connecting fulcrum at the tip and the connecting fulcrum of the dial are connected to both ends of the connecting rod to form a link mechanism. The retaining spheres are respectively projected from the raised curved surfaces at both ends through the constricted portions, and the constricted portions are formed in the notched elastic holes formed at the connecting fulcrum of the arm and the connecting fulcrum of the dial. And a curved surface on the side of the connecting rod around the cutout elastic hole, and a curved surface on the side of the sphere around the cutout elastic hole that gradually expands the gap between the sphere and the point of contact with the sphere. Ventilator opening and closing device for vehicles.