JP2579200B2 - Ventilator and method of manufacturing the same - Google Patents

Description

The present invention relates to a ventilator provided with a plurality of rotatable vertical louvers and horizontal louvers and a method of manufacturing the same.

<< Conventional Technology >> For example, some ventilators attached to an instrument panel of an automobile include those having only a vertical louver or horizontal louvers and those having both. Many louvers are rotatably mounted on the case so that the wind direction can be adjusted, but if you have both vertical and horizontal louvers, one is fixed and the other is adjustable or both are adjustable There is something that is.

FIG. 8 is an exploded perspective view showing an example of a ventilator in which both the vertical and horizontal louvers can be adjusted. Each part is a resin molded product. Holes 5 and 6 for rotatably supporting the upper and lower shafts 3 and 4 of the vertical louver 2 are formed in the upper wall and the bottom wall of the case 1 formed in a rectangular cylindrical shape. The left and right shafts 8 of the horizontal louver 7
Semicircular grooves 10 and 11 for rotatably supporting 9 are formed. Shafts 12 protrude from the rear lower end surface of each vertical louver 2, and each hole 14 of the link 13 is rotatably fitted to these shafts 12, so that each vertical louver 2 can swing integrally. ing. A shaft 15 projects from the right end surface of each lateral louver 7, and each hole 17 of the link 16 is rotatably fitted to the shaft 15 so that each horizontal louver 7 can swing integrally. ing.

Each vertical louver 2 is inserted from the front surface of the case 1 and its upper and lower shafts 3 and 4 are moved along guide grooves 18 and 19 formed on the inner surfaces of the upper and lower walls, respectively, and fitted into the holes 5 and 6, respectively. Combine. Each of the horizontal louvers 7 has its left and right shafts 8 and 9 fitted into grooves 10 and 11 on the left and right front end surfaces of the case 1, and then covers the finisher 20 on the front surface of the case 1, and has a semicircular shape on the left and right rear end surfaces. Groove 21 (right groove not shown) allows shaft 8,
Hold 9 down. The finisher 20 has locking pieces 24 and 25 having two locking holes 22 and 23 on the upper and lower sides, respectively. The locking holes 22 and 23 of the locking pieces 24 and 25 are And, it is attached to the case 1 by engaging with a locking claw 26 formed on the lower surface of the bottom wall (a lower locking claw is not shown).

<< Problems to be Solved by the Invention >> As described above, the conventional ventilator provided with the vertically rotatable louvers that can rotate together, when the vertical louver 2 is assembled to the case 1, the distance from the front surface of the case 1 to the holes 5,6. Because of this, the vertical louver 2 has to be moved while flexing during this time, and it has to be done carefully so that the shafts 3 and 4 do not break, requiring a lot of time and labor. The lateral louver 7 is held by engaging the shafts 8 and 9 with the grooves 10 and 11 on the left and right front end surfaces of the case 1 and then aligning the grooves 21 of the finisher 20. If the mating surface shifts, the horizontal louver 7
Had to be reassembled, as well as taking a lot of time and effort.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a ventilator having vertical and horizontal louvers that can be rotated together with good assembling workability and a method of manufacturing the same.

<< Means for Solving the Problems >> A ventilator according to the present invention comprises a first frame assembly including a plurality of vertical louvers and a frame body rotatably holding the same, and a plurality of vertical louvers and a rotatable plurality thereof. A second frame assembly comprising the held frame, a lower case capable of housing and positioning the first and second frame assemblies therein, and a lower case housing the first and second frame assemblies. And an upper case fixed thereto.

Further, the manufacturing method is such that a first frame assembly in which a plurality of vertical louvers are integrally formed rotatably inside the frame and a second frame in which a plurality of horizontal louvers are integrally formed rotatably inside the frame.
And a step of housing and positioning these two frame assemblies respectively in a lower case, and covering and fixing the upper case to the lower case.

<< Operation >> Two frame assemblies composed of a frame holding a plurality of vertical louvers or horizontal louvers rotatably are integrally formed by a double injection molding method generally called a two-color molding method. Accordingly, a ventilator provided with a vertical louver and a horizontal louver that can rotate together can be obtained by simply housing and positioning such two frame assemblies in the lower case, and then covering and fixing the upper case thereon. It is completed.

<< Embodiment >> FIG. 1 is an exploded perspective view showing an embodiment of a ventilator according to the present invention. This ventilator is formed of a synthetic resin, and has a first frame assembly 33 composed of a frame 32 holding a plurality of vertical louvers 31 rotatably.
And a plurality of horizontal louvers having the same size as the first frame assembly 33.
A second frame assembly comprising a frame 35 rotatably holding 34
36, a lower case 37 accommodating and positioning the first and second frame assemblies 33, 33 inside, and a lower case 37 accommodating the first and second frame assemblies 33, 36, and fixed. An upper case 38 is provided.

The first frame assembly 33 is provided with locking projections 41 at the center of the outer surface of the left and right side walls of the frame 32 with the upper and lower shafts 39 and 40 of the vertical louver 31 formed in advance. A vertically long opening 42 is formed in the front center of the central vertical louver 31a, and a connecting pin having a bulging head is provided at the rear of the lower end surface of each vertical louver 31.
43 project downward and connect to these pins 43
Each of the holes 45 is press-fitted rotatably.

The second frame assembly 36 is formed by integrally forming the left and right shafts 46 and 47 of the pre-formed horizontal louver 34 so as to be rotatable with the frame 35. The locking projection 48 is provided. A connecting pin 49 having a bulging head is provided on the left end surface of each lateral louver 34 so as to project outward.
Each of the holes 51 of the connecting link 50 is press-fitted into the 49 in a rotatable manner.

The lower case 37 is formed in a U-shape with both side walls 52, 53 having substantially the same height as the frame assemblies 33, 36, and a bottom wall 54 having a width slightly smaller than the width of each frame assembly 33, 36. 5 on both sides
The grooves 2 and 53 are formed with concave grooves 55 and 56 having the same width and projecting outward and extending vertically from the upper end to the lower end.
The pair of grooves 55, 55 on the front side are for purchasing and positioning the second frame assembly 36, and the second
A locking recess 57 capable of locking the locking projection 48 of the frame assembly 36 is formed. The pair of concave grooves 56, 56 on the rear side are for inserting and positioning the first frame assembly 33, and the locking projections 41 of the first frame assembly 33 are locked at an intermediate portion thereof. A possible locking recess 58 is formed. These projections 48, 41 and recesses 57, 58 are for assembling the frame assemblies 33, 36 without fail in their positions, and can be provided at other positions, or by other means such as the depth width of the frame assemblies 33, 36. Means such as changing may be taken. Furthermore, on the protruding outer surfaces of both side walls 52 and 53, locking projections 5 for fixing the upper case 38 are provided.
9,60 are formed.

The upper case 38 has side walls 61 and 62 having the same irregularities as the side walls 52 and 53 of the lower case 37 and a top wall 63 connecting them so that the upper case 38 can be fitted to the upper part of the lower case 37 from the outside.
Consists of Locking holes 64, 65 capable of locking to the locking protrusions 59, 60 of the lower case 37 are formed in the side walls 61, 62, respectively. In addition, the lower case 37 and the upper case 38 may be grasped by a concept of a main body and a lid, respectively.

Frame assemblies 33, 36 with connecting links 44, 50 respectively
After being inserted into the concave grooves 56 and 55 of the lower case 37 and positioned by the locking projections 41 and 48, respectively, the operation knob 66 is inserted into the center looper 34a of the front horizontal looper 34. The operation knob 66 includes a main body 67 having a U-shaped cross section,
Each pair of fingers extend up and down from the rear surface of this body
It consists of 68,69. At the rear of the main body 67, inward locking projections 67a are formed, and at the tips of the fingers 68, 69, inward locking projections 68a, 69a are also formed. Therefore, operate the operation knob 66 with the upper and lower fingers 68, 69.
Between the louvers 34a in the center,
Is housed inside the main body 67 and stopped by the locking projection 67a, the tip locking projections 68a, 69a of the fingers 68, 69 enter the long openings 42 above and below the rear vertical louver 31a, and The louver 34 and the vertical louver 31 are connected. Therefore, when the operation knob 66 is moved up and down in this state, the horizontal louver 34 swings up and down, and the wind direction is adjusted.
Is moved left and right, the vertical louver 31 swings left and right, and the wind direction is adjusted. After the frame assemblies 33 and 36 have been housed and positioned in the lower case 37 in this manner, the upper case 38
Is put on the lower case 37, and the locking holes 64, 65 are fitted and fixed to the locking projections 59, 60, whereby a ventilator as shown in FIG. 2 is completed.

Next, a method of manufacturing the frame assemblies 33 and 36 will be described. A method of integrally manufacturing such a frame assembly is disclosed in Japanese Patent Publication No. 54-26266 and Japanese Patent Publication No. 59-48745 previously proposed by the present applicant,
In these methods, a frame is first formed, and then a louver is integrally formed on the frame so as to be rotatable. In the present invention, of course, such a method can be adopted. In the following, a case where a louver is formed first, and then a frame is integrally formed with the louver will be described by taking the first frame assembly 33 as an example. The second frame assembly 36 is formed in a similar manner.

First, as shown in FIG. 3, the louver 31 is formed by injection molding using an ABS resin. Louver 31
Is formed by streamline surfaces having shafts 39 and 40 on both end surfaces and a pin 43 on one end surface. As the molding die, a split die having a symmetrical cavity, in which the two surfaces are divided individually or in half, is used. Shaft 39,40
Have large diameter portions 39a and 40a in the middle, respectively,
Has a bulging head 43a at its tip.

After the required number of such louvers 31 have been formed, each louver 31 is set in a mold as shown in FIGS. This mold is a split mold, and the cavities 70 and 7 have both surfaces divided in half through the center of the shafts 39 and 40 of the louver 31.
It comprises a fixed mold 72 having 1 and a movable mold 73. In the fixed mold 72 and the movable mold 73, frame cavities 76 and 77 are respectively formed in half each so as to be continuous with the shaft corresponding portions 74 and 75 of the louver cavities 70 and 71. Gate in frame 77
78 and runner 79 are continuous, and spool 80 is continuous with runner 79.

The movable mold 73 is moved to open the mold, and the already molded louver 31 is set in the louver cavity 70 of the fixed mold 72, and the mold is closed. Next, as shown in FIGS. 6 and 7, the polypropylene resin melted from the spool 80 is injected into the frame cavities 76 and 77 so that the louver 31 and the frame 3 are melted.
And 2 are integrally formed. Polypropylene resin louver 3
Since the ABS resin 1 is non-weldable and has a low melting point, the two will not fuse. Moreover, as a result of the solidification and contraction of the polypropylene resin forming the frame 32, the frame 32 and the louver
A gap is formed between the shafts 39 and 40 of the 31 and both can rotate. Also, when solidified, the entire frame 32 contracts inward, so that the frame 32 presses the large diameter portions 39a, 40a of the louver shafts 39, 40 inward, so that a sliding torque is generated at the step portions 39a, 40b. I do. The steps 39b and 40b may be tapered surfaces. The louver 31 and the frame integrated in this way
32 means that after moving the movable mold 73 and opening the mold, the fixed mold 72
Taken out of When the mold is opened, the gate portion 81 is automatically cut from the frame 32.

As described above, even when the louver is first formed and then the frame is integrally formed with the louver, the louver and the frame are continuously connected to each other by using an inversion mold as disclosed in Japanese Patent Publication No. 59-48745. Can be integrally molded.

In addition, as a material of the louver to be molded first, a synthetic resin such as high-impact polystyrene, polyacetal, polycarbonate, polyamide, and polyphenylene oxide can be used in addition to the ABS resin. In addition, synthetic resins such as polyethylene and ethylene-vinyl acetate copolymer can be used.

<< Effects of the Invention >> As described above, the ventilator according to the present invention includes a first frame assembly including a plurality of vertical louvers and a frame body rotatably holding the same, a plurality of horizontal louvers, and a plurality of horizontal louvers. A second frame assembly composed of a frame body held at a lower position, a lower case capable of accommodating and positioning the first and second frame assemblies therein, and a lower case accommodating the first and second frame assemblies. Since it is equipped with an upper case that is covered and fixed, the assembly workability is extremely good.
A ventilator having vertical and horizontal louvers that can rotate together can be realized, and there is an effect that the reliability of the product is improved and the cost can be reduced.

Further, in the method of manufacturing a ventilator according to the present invention, the first frame assembly in which a plurality of vertical louvers are integrally formed so as to be rotatable inside the frame and the plurality of louvers are integrally formed so as to be rotatable inside the frame. The second frame assembly is prepared, and the two frame assemblies are housed and positioned in the lower case, and the lower case is covered with the upper case and fixed. It is possible to manufacture a ventilator provided with possible vertical and horizontal louvers extremely easily and in a short time, thereby improving the reliability of the product and reducing the cost.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a ventilator showing one embodiment of the present invention, FIG. 2 is an assembled perspective view of the ventilator shown in FIG. 1, and FIG. 3 is a perspective view of a louver used in the ventilator. FIG. 4 is a vertical sectional view of a mold for molding a frame assembly used in the ventilator, and FIG.
FIG. 6 is a vertical sectional view showing the same mold together with the molded product; FIG. 7 is a horizontal sectional view showing the same mold together with the molded product; and FIG. 8 is a conventional ventilator. FIG. 2 is an exploded perspective view showing one example. 31 ... vertical louver, 32 ... frame, 33 ... first frame assembly, 34 ... horizontal louver, 35 ... frame, 36 ... second frame assembly, 37 ... lower case, 38 ... … Upper case, 44,50…
… Connecting link, 66… Operation knob.

Claims (2)

(57) [Claims] 1. A first frame assembly comprising a plurality of vertical louvers and a frame body rotatably holding them, and a second frame assembly comprising a plurality of horizontal louvers and a frame body rotatably holding them. A three-dimensional structure, a lower case capable of housing and positioning the first and second frame assemblies therein, and an upper case fixed over the lower case housing the first and second frame assemblies. Equipped ventilator. 2. A first frame assembly in which a plurality of vertical louvers are integrally formed so as to be rotatable inside the frame, and a second frame in which a plurality of horizontal louvers are integrally formed so as to be rotatable inside the frame. A method of manufacturing a ventilator, comprising the steps of: providing a frame assembly; and positioning and housing the two frame assemblies in a lower case, and fixing the lower case with an upper case.