JPH065546Y2 - Exhaust fan grill mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to mounting a grill of an embedded ventilation fan, and more particularly to a grill mounting device for a ventilation fan main body.

[Prior Art] As a conventional example of a grill mounting device for a ventilation fan of this type, there is a technique disclosed in Japanese Utility Model Laid-Open No. 59-167349.

4 to 6 show the grill mounting device for the ventilation fan disclosed in the above publication, FIG. 4 is a perspective view, and FIG. 5 is an exploded sectional view of the grill mounting device for the ventilation fan shown in FIG. Sixth
The figure is a perspective view showing a step of bending the bending fixing piece of the grill mounting device for the ventilation fan shown in FIG.

In the figure, (1) is a grill for a plastic ventilation fan, (2) is a box-shaped locking member symmetrically provided on the center line around the back surface of the grill (1), and (3) is this locking member ( 2) a pair of insertion holes provided on the opposite side walls,
(4) is a grill mounting spring made of spring steel bent in a substantially V shape, and has engaging portions (5) which can be detachably engaged with a ventilation fan body (not shown) at both ends thereof. There is.
(6) is a locking hole portion provided at the center of the grill mounting spring (4) in which spring steel is wound twice, and its inner diameter is set to be the same as or slightly larger than the insertion hole (3). .

(7) is a fixed piece made of iron plate, the shape of which is a bent fixed piece in which a part of the cylindrical side wall extends in the axial direction with a constant width at the tip of the central part formed in a substantially cylindrical shape (8) At the other end, a material piece which is similarly extended with a constant width is formed so as to have a bent head portion (9) at a right angle so as to cover the end surface of the cylindrical portion. The outer diameter of the cylindrical portion is slightly smaller than that of the insertion hole (3).

The grill mounting spring (4) is fixed to the locking member (2) of the grill (1) as follows. That is, as shown in FIGS. 5 and 6, the locking hole portion (6) of the grille mounting spring (4) is inserted in the middle of the pair of insertion holes (3) and coaxially held, and then from the outer side. The fixing piece (7) is inserted from the bent fixing piece (8) side along the axis. The cylindrical portion of the fixing piece (7) penetrates the insertion hole (3) and the locking hole portion (6), and the bent fixing piece (8) projects from the side wall of the locking member (2). Finally, the protruding portion of the bending fixing (8) is bent 90 degrees downward along the side wall of the locking member (2) as shown in the figure to complete the fixing.

The conventional grill attachment device for a ventilation fan is configured as described above, and is attached or detached by detachably engaging the engaging portion (5) of the grill attachment spring (4) with the ventilation fan main body. Then, the grill mounting spring (4) is attached to the insertion hole (3) of the locking member (2) by the fixing piece (7), and the fixing piece (7) is bent by the bending fixing piece (8) and the bending head ( It is fixed to the locking member (2) by 9).

In addition, the patent gazette for this type of technology is disclosed in
-108020 and Japanese Utility Model Laid-Open No. 57-162424.

[Problems to be Solved by the Invention] In the conventional grill mounting device as described above, a step of inserting the fixing piece (7) and then bending the bending fixing piece (8) is required for assembly thereof. It was also necessary to inspect the bent state. For this reason, there is a problem in that equipment other than equipment for fixing the fixing piece (7) to the locking member (2), a bending step, and a step of judging the result are required.

Therefore, the present invention has been made to solve such a problem, and to obtain a grill mounting device for a ventilation fan that requires less equipment cost, does not require processing man-hours during assembly, and has little secular change. Is an issue.

[Means for Solving the Problems] In the grill attachment device for a ventilation fan according to the present invention, the fixing piece is made of metal, and the fixing piece is formed in a substantially cylindrical shape as a whole, and a part of the cylindrical surface is formed. Is an elastic locking projection formed by cutting and raising so as to project outward in the substantially radial direction.

[Operation] In this invention, when the fixing piece is inserted through the insertion hole of the locking member and the locking hole of the grill mounting spring,
The locking projections protruding from the cylindrical surface of the fixed piece are elastically displaced toward the center in the radial direction, and after completion of insertion, the locking projections project from the cylindrical surface to fix the fixed piece in place.

[Embodiment] FIG. 1 is an exploded perspective view of an embodiment of a grill mounting device for a ventilation fan according to the present invention, FIG. 2 is a sectional view of an essential part in the exploded state of FIG. 1, and FIG. It is a principal part sectional view after completion of assembly. In the figure, (1) to (6) are parts which are the same as or correspond to the constituent parts of the above-described conventional ventilation fan grille mounting device (for (1) to (3), refer to FIG. 4).

In the figure, (7) is a fixing piece formed by processing an iron plate as in the conventional case, and the central portion thereof is processed into a cylindrical shape. A bent head (9) is integrally formed at the rear end of the cylindrical portion. The bending head (9) is formed by further extending the upper part of the central cylindrical portion from the rear end and bending it downward by 90 degrees. Up to this point, it is the same as the conventional fixing piece (7). Is. A tongue-shaped locking projection (10) is cut and raised near the top end of the central cylindrical portion so as to project radially outward from the cylindrical surface. The part where the locking projection (10) is separated from the fixed piece (7) is set to be the rear end of the locking projection (10). That is, the locking projection (10) is an elastic piece that projects outward in the radial direction from the front toward the rear. The axial position of the locking projection (10) is such that the dimension from the rear end of the central cylindrical portion of the fixed piece (7) to the rear end of the locking projection (10) is the insertion hole (3). Is set to be slightly larger than the outer dimension of the distance between the pair of side walls provided with.

The assembly of the locking member (2), the grill mounting spring (4) and the fixed piece (7) is as follows.

First, the locking hole portion (6) of the grill mounting spring (4) is coaxially arranged between the pair of insertion holes (3) of the locking member (2), and then the fixing piece (7) is arranged as shown in FIG. ) Is inserted through the insertion hole (3), the locking hole portion (6) and the insertion hole (3) again in this order. At this time, the locking projection (10) receives a force toward the center in the radial direction when it is inserted from the direction of the inclination (or the front end thereof is the attachment portion) and is displaced in that direction. While passing through the insertion hole (3) and the locking hole portion (6). Moreover, since the insertion hole (3) is circular, the rotation angle of the fixed piece (7) is not restricted with respect to the insertion direction. Finally, the state shown in FIG. 3 is reached, and the assembly as the grill mounting device is completed. In this state, the grill mounting spring (4) is coupled to the locking member (2) via the fixed piece (7). Also, the fixed piece (7)
The rear end (free end) of the locking projection (10) contacts the side wall of the locking member (2) and holds the locking member (2) together with the bent head (9). Therefore, it is in the insertion hole (3) and is also fixed in the axial direction.

As described above, the ventilation fan grille mounting device according to the present embodiment engages the locking member 2 having the pair of insertion holes 3 fixedly mounted on the ventilation fan grille 1 with the ventilation fan main body in a detachable manner and partially engaging with the ventilation fan body. A grill mounting spring 4 having a stop hole portion 6, and a fixing member which is inserted into the locking hole portion 6 of the grill mounting spring 4 and the insertion hole 3 of the locking member 2 and is locked to the locking member 2. The fixed piece 7 is formed into a substantially cylindrical shape, and a part of the cylindrical surface is cut and raised so as to protrude outward in the substantially radial direction. The locking projection 10 has elasticity.

Therefore, the locking projection 1 is attached to a part of the cylindrical surface of the fixed piece 7.
With a simple structure in which 0 is elastically mounted outward, by simply inserting the fixing piece 7 into the insertion hole 3 and the locking hole portion 6 of the grill mounting spring 4, the assembly of the grill mounting spring 4 is performed.
The fixing piece 7 can be fixed to the grill 1.

Therefore, since the fixing piece 7 is securely attached by insertion, the equipment cost is low and the processing man-hour is not required. Further, the assembling workability is stable and easy, and the quality is stable.

[Advantages of the Invention] As described above, the ventilation fan grille mounting device of the present invention is provided with a locking member having a pair of insertion holes fixed to the ventilation fan grille, and a grille mounting spring detachably engaged with the ventilation fan main body. Of the cylindrical member, which is inserted into the locking hole portion of the locking member and the insertion hole of the locking member and locked with respect to the locking member, has a locking projection protruding radially outward. Since it is composed of a fixed piece that is installed, the fixing piece is simply inserted into the insertion hole and the locking hole portion by a simple structure in which the locking projection piece is elastically installed outward on a part of the fixed cylindrical surface. The grille mounting spring can be assembled and the fixing piece can be fixed to the grill by simply inserting it into the grill. This fixed state is made of metal even in a grill whose temperature changes drastically, and since the locking projections are not elastically contacted in a steady state, stable strength can be maintained. Further, since the insertion hole is circular, the rotation angle of the fixed piece is not restricted with respect to the insertion direction. Therefore, since the attachment of the fixing piece is surely performed by the insertion, the equipment cost is low and the processing man-hour is not required.
Further, the assembly workability is stable and easy, and the quality is stable.

[Brief description of drawings]

1 is an exploded perspective view of an embodiment of a ventilation fan grille mounting device of the present invention, FIG. 2 is a cross-sectional view of a main part in an exploded state of FIG. 1, and FIG. 3 is a view after assembly of FIG. 1 is completed. FIG. 4 is a perspective view showing a grill mounting device of a conventional ventilation fan, FIG. 5 is an exploded sectional view of the ventilation fan grill mounting device shown in FIG. 4, and FIG. 6 is shown in FIG. It is a perspective view which shows the bending process of the bending fixing piece of the grill mounting apparatus of a ventilation fan. In the figure, there are 1: grill, 2: locking member, 3: insertion hole, 4: grill mounting spring, 6: locking hole portion, 7: fixed piece, 10: locking projection piece. In the drawings, the same reference numerals and symbols indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A locking member having a pair of insertion holes fixedly mounted on a grill of a ventilation fan, a grill mounting spring removably engaged with the ventilation fan main body and partially having a locking hole portion, and the grill mounting. In a grill mounting device for a ventilation fan, comprising: a fixing piece that is inserted into an engagement hole portion of a spring and an insertion hole of an engagement member and is engaged with the engagement member, the insertion hole having a circular shape. The fixing piece is made of metal, and the fixing piece is formed into a generally cylindrical shape, and a part of the cylindrical surface is cut and raised so as to project outward in the substantially radial direction. A grill mounting device for a ventilating fan, wherein the grill mounting device is an elastic locking projection.