JPS6332908Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shutter suitable for, for example, a radiator for a vehicle or other vehicle.

A conventional shutter of this kind, as shown in FIGS. 1 to 3, includes a rectangular frame 1 and a pair of left and right vertical frames (only one of which is shown in the drawings) fixed within the frame 1. 2, a pair of upper and lower horizontal frames 3 fixed between the vertical frames 2, 2, and a pair of operating rods 4 movably arranged along the vertical frames 2, 2, respectively.
, the two pins provided at both ends are connected to the vertical frame 2.
and the vertical frames 2, 2 by being pivotally connected to the operating rod 4.
A plurality of vanes 5 are pivotally supported in parallel between the operating rods 4 and 4, and a plurality of vanes 5 are stretched between the operating rods 4 and the frame 1 and are directed upwardly toward the operating rods 4, that is, in the direction of opening the vanes 5. The spring 6 is fixed to the frame 1 and is connected to a negative pressure generating part of the engine (not shown), and is controlled by a shutter stud (not shown), which controls the operating rod 4 during operation. Negative pressure actuator 7 capable of moving downward, that is, in the direction of closing the vane 5
It was composed of etc. The vane 5 is formed by processing a vane body 8 made of an aluminum material which is drawn and formed, and is provided with two pins 9a and 9b, which are a pair of pins 9a and 9b which are caulked to both ends of the vane body 8. It consists of a supporting arm 9 and a rubber or synthetic resin seal 10 caulked to the edge of the vane body 8 (Fig. 3), and the pins 9a and 9b are provided on the vertical frame 2 and the operating rod 4, respectively. Circlips 11 are fitted into grooves provided in the pins 9a and 9b to prevent them from coming off after they have been inserted into the holes 2a and 4a.
(Figure), the seal 10 was designed so that it could overlap the edge of another vane 5 from the leeward side, so when it was exposed to wind pressure when fully closed, the seal 10 would bend and air would leak from the overlapped part. It was hot.
Further, since the vane 5 is configured to be fully closed when wind pressure is applied when the actuator 7 fails or the spring 6 breaks, there is a problem in that the engine overheats.

In view of the above-mentioned problems, the present invention is designed so that the seal of a vane can overlap the edge of another vane from the windward side, and the other edge of the vane can overlap the seal of another vane from the leeward side, and the vane pivots. The position of the pivot point is selected so that the distance from the pivot point to the outer edge of the other edge is greater than the distance from the pivot point to the outer edge of the seal, so that the overlapped area of the vanes is protected even when wind pressure is applied when fully closed. The purpose is to provide a shutter in which the vanes are opened by wind pressure in the event of failure of the actuator 7 or damage of the spring 6, etc., while preventing air from leaking from the shutter. This will be explained based on the example shown, with the same reference numerals given to the same members as in the conventional example above.
Reference numeral 12 denotes a vane body formed into a thin plate shape by press molding of a thin metal plate or resin molding, and a notch 12a is formed at both ends of the vane body to fit with a shaft portion of a support arm described later (see Fig. 6). ), and one edge along the longitudinal direction is provided with a dovetail-shaped seal insertion groove 12, for example.
b is formed (Fig. 7). Reference numeral 13 denotes pins 13a and 13b (see FIG. 5) for supporting the vane, and a support arm body 13c (see FIG. 7) that is large enough to cover at least the end of the groove 12a of the end surface of the vane body 12.
and a split groove 13 that can fit with the end of the vane body 12.
d' and a shaft portion 13d (FIG. 5) which is coaxial with the pin 13a and is integrally formed by resin molding. 14 is formed by double extrusion molding so that the base portion 14a to be inserted into the seal insertion groove 12b of the vane body 12 is, for example, dove-shaped and has a high hardness, and the seal portion 14b has a low hardness. It is a seal made of rubber or synthetic resin (Fig. 8). These constitute a vane. First, the seal 14 is attached to the edge of the vane body 12 by inserting the base 14a of the seal 14 into the seal insertion groove 12b from its end opening, and then supporting Groove 13 of shaft portion 13d of arm 13
d' into the bottom edge of the notch 12a of the vane body 12, and by fitting the shaft portion 13d into the notch, the support arm 13 is attached to the vane body 1.
2, and then insert the pins 13a and 13b of the support arm 13 into the vane pivot holes of the vertical frame 2 and the operating rod 4, respectively, so that the entire vane can be attached between the vertical frames 2, 2 and the operating rod 4. , so that it is pivoted between 4 and 4. In addition, in this state, the seventh
As shown in the figure, the seal 14 can overlap the edge of another vane from the windward or forward side, and the other end of the vane body 12 can overlap the seal 14 of another vane from the leeward or rearward side. Therefore, the distance l from the center of the shaft portion 13d to the edge of another vane that can overlap from the windward side, that is, the outer edge of the seal 14, is greater than the distance _l1 . The mounting position of the shaft portion 13d relative to the vane body 8 is selected such that the distance l ₂ from the other edge of the vane body 12 to the outer edge is larger.

The shutter according to the present invention is constructed as described above, and is constructed so that the seal 14 can overlap the edges of other vanes from the windward side. This prevents the seal 14 from deflecting, and instead allows the seal 14 to come into close contact with the edge of the other vane. Therefore, air leakage from the overlapping portion is prevented.
Also, the distance from the center of the shaft portion 13d to the seal of another vane on the leeward side is longer than the distance l ₁ from the center of the shaft portion 13d, which is the pivot point of the vane, to the outer edge of the part that can overlap from the windward side to the edge of another vane. Shaft part 13 so that the distance l ₂ from to the outer edge of the overlapping part is larger.
Since the installation position of d with respect to the vane body 8 has been selected, if the vane is exposed to wind pressure when it is in a state where it can freely rotate due to a failure of the actuator 7 or damage to the spring 6, etc., the vane will move as shown in Fig. 7. Rotates to the left and becomes open. In this case, when the vane starts to rotate to the left, the seal 14 is bent by the wind pressure and the distance l ₁ becomes even smaller, so that the left rotation is further promoted. Therefore, the vanes are fully opened and the engine is prevented from overheating.

Note that, unlike the above embodiment, only one operating rod 4 may be used, and in that case, it is not necessary to provide the pin 13b on the support arm 13 to be attached to the other end of the vane body 12.

As mentioned above, the shutter according to the present invention does not allow air to leak from the overlapping portion of the vanes even when exposed to wind pressure when fully closed, and when the actuator fails or the deflection spring breaks, the shutter opens due to wind pressure and prevents the engine from overheating. It has the practical advantage of not causing this.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway perspective view of a conventional shutter.
FIG. 2 is a sectional view taken along the line of FIG. 1, FIG. 3 is a side view of the vane of the conventional example, FIG. 4 is a partially cutaway perspective view of an embodiment of the shutter according to the present invention, and FIG. FIG. 6 is a plan view of the vane body of the above embodiment, FIG. 7 is a vertical cross-sectional view of main parts showing the pivoting state of the vane in the above embodiment, and FIG. 8 is the above embodiment. FIG. 3 is a cross-sectional view of an example seal. 1...Frame, 2...Vertical frame, 3...Horizontal frame, 4
...Operation rod, 6...Spring, 7...Negative pressure actuator, 12...Vane body, 13...Support arm, 14...Seal.

Claims (1)

[Scope of utility model registration request] a pair of left and right vertical frames fixed within the frame, a pair of upper and lower horizontal frames fixed between the pair of vertical frames, and an operating rod movably arranged along the vertical frames;
A shutter comprising a plurality of vanes which are pivotally supported between the pair of vertical frames and in parallel to the operating rod, and which are opened and closed by the movement of the operating rod and have a seal attached to one edge, wherein the seal of the vane is The edge of the vane may overlap from the windward side, and the other edge of the vane may overlap the seal of the other vane from the leeward side. A shutter characterized in that the position of the pivot point is selected so that the distance from the fulcrum to the outer edge of the other edge is greater.