JP3645835B2 - Mounting structure of louver with fan - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a louver with a fan for forced ventilation, and more particularly to an improvement in its mounting structure.
[0002]
[Prior art]
A conventional louver with a fan has a structure as shown in FIGS. FIG. 6 shows a mounting structure of a louver with a hood, in which a box wall surface 22 to be mounted is sandwiched between a louver body 21 and a fan 23, and a ventilation opening 25 is formed in the wall surface 22 and screws 24 are inserted. The holes 26 are formed at the four corners of the opening, the fan 23 is disposed inside the box, and is mounted by screwing from the inside.
[0003]
In FIG. 7, the wall surface opening 27 is formed larger than the outer size of the fan 23 so that the fan 23 can be inserted, the fan 23 is fixed to the louver body 28 with screws in advance, and the claws 29 provided on the louver body 28 are opened. 27 is structured to be locked and attached to the end of 27, and further, holes 30 through which screws are inserted are further formed at the four corners of the opening 27 as necessary, and the louver main body 28 is fixed with screws from the inside of the box. It has become.
[0004]
[Problems to be solved by the invention]
However, the mounting structure shown in FIG. 6 requires a lot of labor for mounting holes, and requires a screw tightening operation in the box, so that the workability of the mounting / dismounting operation at the time of installation or fan replacement is poor. In addition, since the attachment structure of FIG. 7 is a structure that is locked to the opening 27, if the dimensional accuracy of the square hole that is the opening is poor, it cannot be locked, and installation in a site where vibration or impact is applied, Since it is necessary to tighten the screw, there is a case where the forming process of the hole 30 for screw insertion may occur, and it takes time and effort to process the hole.
In view of the above problems, an object of the present invention is to provide a mounting structure for a fan-equipped louver that is easy to mount and that is easy to attach and detach.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention of claim 1 is arranged such that the louver main body is arranged in front of the opening to be attached and the fan is arranged on the back of the opening, and both are connected via the attachment object. The louver main body has a cylindrical portion that is inserted into the opening, and the entire cylindrical portion is a male screw, while the connecting surface of the fan a ring-shaped member that is screwed to the male screw provided, and can be attached to the object mounting the louver fan fastened to the ring-shaped member to the louver body, the ring-shaped member, said nut body formed with a female thread The connecting frame is provided with a fan body, and the connecting frame is fitted on the nut body and is rotatable with respect to the nut body .
[0007]
According to a second aspect of the present invention, in the first aspect of the invention, a reverse prohibiting mechanism is provided between the connecting frame and the nut body so that the connecting frame can be rotated only in the nut body screwing direction and the rotation in the opposite direction is prohibited. It is characterized by that.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of the invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a state in which a louver with a fan according to the present invention is installed. 1 is a louver body, 2 is a fan, 3 is a ring-shaped member, 4 is a box wall surface to be attached, and the left side is a box. The front and right sides are inside the box.
[0009]
The louver body 1 has a frame body 1a that covers the front surface of the rectangular opening 5 formed on the box wall surface 4, and a cylinder portion 1b that is formed by extending the wall surface of the ventilation opening at the center of the frame rearward. Is formed in a substantially quadrangular shape, and thread grooves 6 are formed at the four corners thereof, forming a male screw in the entire cylindrical portion. Moreover, the latching claw 7 latched to each edge | side of the opening part 5 is formed in each of four flat sides of the cylinder part 1b.
[0010]
As shown in FIG. 2, the ring-shaped member 3 is composed of two members, that is, a nut body 9 and a connecting frame 10 that is joined to the nut body 9 so as to be externally fitted, that is, to accommodate the nut body 9. The nut body 9 is formed with a screw groove 11 on the inner surface, and constitutes a female screw that engages with a male screw formed by the cylindrical portion 1 b of the louver body 1. Also, sawtooth indentations 12 over the entire circumference at the rear adjacent to the female screw groove 11 as shown in A-part enlarged view is formed. The jagged portion 12 is formed with a step 12a at an end portion in the screwing direction, and a gentle slope is formed between adjacent steps. Moreover, the whole is formed by resin molding.
[0011]
The connecting frame 10 is formed with screw holes 14 for screwing the fan 2 at four locations on the back surface, and an inner bottom surface that is the back surface of the connecting frame 10 is connected to the inner side surface 10a of the connecting frame 10 as shown in the enlarged view of part B as shown in FIG. A plurality of tongue pieces 15 are provided projecting forward with a predetermined gap (a gap slightly smaller than the thickness of the nut body 9). And the whole except a screw hole formation part is formed by resin molding, and the screw hole formation part is formed by embedding a metal piece. In addition, the pitch of the tongue piece 15 is formed according to the pitch of the serrated portion 12.
[0012]
The assembly and operation of the nut body 9 and the connecting frame 10 formed in this way will be described. The nut body 9 is housed in the connecting frame 10 and they are joined together. As shown, the nut body 9 is inserted between the inner side surface 10a of the connecting frame 10 and the tongue piece 15 to be integrated. Therefore, the jagged portion 12 and the tongue piece 15 form a reverse prohibition mechanism, and the connecting frame 10 is rotated clockwise with respect to the nut body 9 in the screwing direction, that is, the connecting frame 10 is rotated without screwing operation. Although the rotation in the opposite direction is possible, the tongue piece 15 engages with the step 12a of the serrated portion and the rotation is prevented.
[0013]
Then, the fan 2 is screwed and assembled to the ring-shaped member 3 in which the nut body 9 and the connecting frame 10 are joined, and screwed into the cylindrical portion 1b of the louver body 1 through the box wall surface, as shown in FIG. Thus, the fan-equipped louver is assembled and attached to the object to be attached with the wall surface interposed therebetween.
FIG. 4 is a perspective view showing a state in which the louver body 1 and the fan 2 are connected to assemble a louver with a fan. As described above, the fan 2 is moved away from the louver body 1 by the inversion prohibiting mechanism of the ring-shaped member 3. It is formed so that it can rotate in the right direction, but cannot rotate in the opposite direction.
[0014]
As described above, since a screw is not separately used when mounting on the mounting target, the mounting work is easy, and also when replacing the fan, it is easy to work after removing the ring member connected to the fan from the louver body. What is necessary is to remove the fan from the ring member at the place, etc., and it is not necessary to remove the screw in the box, so that the maintenance workability is improved.
In addition, since the mounting structure sandwiches the mounting target, it can be securely fixed without using screws regardless of the dimensional accuracy of the opening and the presence or absence of vibration at the mounting location. Since it can be easily fixed and it is not necessary to form a screw insertion hole, it is easy to process.
[0015]
Furthermore, if the tightening force is too strong, the connecting frame slides and rotates around the nut body, so that the tightening force does not exceed a specific amount and the ring member cannot be removed when replacing the fan. In addition, there is no fear that the ring body will be damaged due to excessive tightening, and only the connecting frame will not be idle when it is removed by the reverse prohibiting mechanism and can be easily removed.
In addition, the connecting frame can be rotated even when the louver with a fan is attached, so that the fan can be rotated. Even when the fan is in an inclined state, the fan can be rotated to adjust the angle, and the fan is positioned at a predetermined angle. it can.
[0016]
FIG. 5 shows another embodiment of the present invention. The difference from the above embodiment will be described. The cylindrical portion 18 of the louver main body 17 is formed in a cylindrical shape without providing a locking claw, and the corresponding opening portion 19 of the box wall portion is also formed in a circular shape.
Thus, since the louver with a fan of the present invention has a structure in which the fan is fastened to the louver body so as to sandwich and attach the object to be attached, it is not necessary to provide a locking claw for locking to the opening. Moreover, you may make it circular in this way the cylinder part and opening part which are inserted in an opening part.
[0017]
【The invention's effect】
As described above in detail, according to the first aspect of the present invention, no screws are used when attaching to the object to be attached, so that the attachment work is easy, and the screws can be removed in the box when replacing the fan. After removing the ring member connected to the fan from the louver main body without any work, the fan can be removed from the ring member at a place where the work is easy to perform, and the workability of maintenance is improved.
In addition, since the mounting structure sandwiches the mounting target, it can be securely fixed without using screws regardless of the dimensional accuracy of the opening and the presence or absence of vibration at the mounting location, and a tool is required for fixing. do not do. Furthermore, since it is not necessary to form a screw insertion hole, processing is easy.
[0018]
Further, since the fan can be rotated with the fan-equipped louver attached, even if the fan is in the tightened state at an inclined angle, the angle can be adjusted by rotating and the fan can be positioned at a predetermined angle.
[0019]
According to the invention of claim 2 , in addition to the effect of claim 1 , if the tightening force is too strong, the connecting frame does not slide and rotate around the nut body, and the fastening force does not exceed a specific amount. There is no possibility that the ring body cannot be removed during replacement or that the ring body is damaged due to excessive tightening.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state where a louver with a fan is attached as an example of an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the ring member of FIG. 1 and a partially enlarged view thereof.
FIG. 3 is an explanatory view showing an engagement state between a serrated portion and a tongue piece.
FIG. 4 is a perspective view of a state in which a louver body and a fan are connected.
FIG. 5 is a perspective view showing another embodiment of the present invention.
FIG. 6 is a perspective view showing how a conventional louver with a fan is attached.
FIG. 7 is a perspective view showing how a conventional louver with a fan is attached.
[Explanation of symbols]
1..Louvre body, 1a..Frame body, 1b..Cylinder, 2..Fan, 3 ring-shaped member, 4..Box wall surface (attachment target), 5..Opening part, 6..Thread groove, 9 .. Nuts body 10... Connection frame 11.. Screw groove 12.. Giza portion 15.. Tongue piece 17 louver body 18.

Claims (2)

The louver body has a fan louver mounting structure in which the louver body is placed in front of the opening to be attached and the fan is placed at the back of the opening, and both are connected via the attachment object to sandwich and fix the attachment object. And
The louver main body has a cylindrical portion to be inserted into the opening, and the entire cylindrical portion is a male screw, while a ring-shaped member that is screwed to the male screw is provided on the connecting surface of the fan. By tightening the ring-shaped member, the louver with fan can be attached to the installation target ,
The ring-shaped member includes a nut body in which a female screw is formed and a connecting frame on which the fan main body is mounted. The connecting frame is fitted on the nut body and is rotatable with respect to the nut body. Mounting structure of louver with fan. During the connecting frame and the nut member, the connecting frame is rotatable only in the nut member screwing direction, opposite direction mounting structure of a fan with louvers according to claim 1, wherein is provided a reversing prohibition mechanism for prohibiting the rotation of the.

Images