JPS585190Y2 - Fan elevation angle adjustment device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an elevation angle adjustment device for an electric fan.

Conventional fan elevation angle adjustment device A neck piece 4 supporting the □ portion is inserted into the slotted portion 1, and the neck piece 4 is rotatably attached using a mounting screw 6 inserted through a mounting screw insertion hole 5 formed in the slotted portion.

An insertion hole 7 for a mounting screw 6 is provided on one side of the neck piece 4.
A torsion spring 9 is inserted into an annular groove 8 formed concentrically with the torsion spring 9, and one bent end 10 of the torsion spring 9 is inserted into a hole 11 provided in the groove 8, and the other bent end 12 (/i is inserted into the slotted part 1). They are respectively inserted and fixed into the provided engagement grooves 13 to apply a force in the elevational direction to the neckpiece 4.

A spring 15 and a clutch ball 16 are stored in a stopper device storage portion 14 formed on the outer periphery of the cut neckpiece 4, and when the neckpiece 4 is inserted into the slotted portion 1, the clutch ball 16 is inserted into the engagement hole 2. The neckpiece 4 is selectively engaged with one of the neckpieces to maintain the neckpiece 4 at a desired angle.

However, the torsion spring 9 is designed to have a force in the elevation direction even when the neckpiece 4 is in the maximum elevation state. As shown in FIG. Therefore, when assembling, it is necessary to align the mounting screw insertion hole 5 of the slotted part 1 with the insertion hole 7 of the neckpiece 4 against the force of the torsion spring 9. In addition, it was difficult to insert the mounting screws 6, and it was difficult to assemble.

Furthermore, since the stopper device is assembled at the same time as the neck beam 4 is inserted, the clutch ball 16 must be held down by the force of the spring 15 to prevent it from flying out during assembly.
It was also difficult to assemble.

In consideration of the above points, the present invention is intended to provide an elevation angle adjustment device that is easy to assemble, and will be explained below with reference to FIGS. 4.5 and 6.7.

Reference numeral 21 denotes a neck piece that supports the electric motor part, and one side 22 of the neck piece 21 has a recess 25 for storing a coil part 24 of a torsion spring 23 that applies a force in the elevation direction to the neck piece, and a recess 25 for storing a coil part 24 of a torsion spring 23 that applies a force in the elevation direction to the neck piece. A hole-shaped retaining portion 2T into which one end 26 of the torsion spring 23 is inserted and locked, and a notch 29 in which the other end 28 extending in the tangential direction of the torsion spring 23 moves as the neckpiece rises and falls.
A boss portion 31 is provided in the center of the recess 25 with an insertion hole 30 through which the mounting screw 6 passes.

A pivot 34 for pivotally supporting a support plate 33 is formed on the other side surface 32 of the neck piece 21 concentrically with the insertion hole 30, and a convex portion 35 is formed on the lower side surface of the neck piece 21.
A storage hole 38 for storing the spring 36 and clutch ball 37
is formed.

The support plate 33 has a vertical portion 39 that comes into contact with the other side surface 32.
and a horizontal portion 40 extending horizontally from the lower edge of the vertical portion 39.
Thus, a through hole 41 is formed in the vertical portion 3.9 Ktri through which the pivot shaft 34 is inserted, and a plurality of engagement holes 42 through which the clutch ball 37 is engaged are formed around the through hole 41. It is shaped.

The horizontal portion 40 is formed with a notch-shaped engagement portion 43 with which the other end 28 of the torsion spring 23 engages.

The upper edge of the vertical portion 39 is composed of an arcuate portion 44 and a straight portion 45 formed more continuously from the arcuate portion.

When the neck piece 21 is rotated and positioned at the maximum elevation angle, the straight portion 45 comes into contact with a stepped portion 46 formed on the other side surface 32 of the neck piece 21 to restrict rotation of the neck piece 21.

・. Next, the assembly and operation of the elevation angle adjusting device having the above configuration will be explained.

After storing the spring 36 and clutch ball 37 in the storage hole 38 of the neck piece 21, fit the through hole 41 of the support plates 3 into the pivot 34, and insert the straight part 45 of the support plate 33 into the stock part,
Leave it in contact with 46.

At this time, the clutch ball 37 is held down by the support plate 33, so that it is not pushed out from the storage hole 38 by the spring 36.

Thereafter, one end 26 of the torsion spring 23 is inserted into the engaging portion 27, and the torsion spring 23 is housed in the recess 25.

Then, the other end 28 of the torsion spring 23 is twisted against the force of the spring and is locked in the engagement notch 43 of the support plate 33.

At this time, the support plate 33 tries to rotate more due to the force of the spring, but its rotation is stopped by the stepped portion 46, so that the force of the torsion spring can be stored.

Finally, the neck piece 21 assembled in this way is inserted into the stand upper slot 1, the support plate 33 is placed on the holding part 47 formed in the slot 1, and the mounting screws 6
The neck piece 21 can be installed by passing the mounting screw 6 into the slot 1 through the insertion hole 5 of the slot 1 and fixing the mounting screw 6 to the slot 1, and fixing the support plate 33 to the slot 1. is completed.

In this way, simply by inserting the neck piece 21 into the slot 1, the holes 5 and 30 through which the mounting screws , , and 6 are inserted are aligned, so that the neck piece 21 can be easily mounted without requiring much force.

In this embodiment, the neck piece 21 of the support plate 33
Although the neck piece 21 is pivoted by a pivot 34 protruding from the other side surface 32, the present invention is not limited to this. A protruding wall is provided, and the annular wall is connected to the neck piece 21.
It may be fitted into an annular groove formed on the other side surface 32 and pivotally supported, and various structures are possible.

Further, in this embodiment, a restriction portion for preventing rotation of the support plate 33 is formed by a stepped portion 46 formed on the other side surface 32 of the neck 1-seat 21.
Alternatively, a crescent-shaped groove may be formed in the neck piece 21 into which a bent piece formed by bending the side edge of the support plate 33 is inserted, and the edge of the groove is bent. Rotation may be restricted by making the pieces come into contact with each other.

Furthermore, various structures can be considered, such as forming a cut-and-raised piece on the support plate 33 that comes into contact with the side surface of the convex portion 315 formed on the lower side surface of the neck piece 21.

As described above, in the present invention, a support plate is pivotally supported on the side surface of a neckpiece that supports an electric motor part, and one end of a torsion spring that applies a force in an elevational direction to the neckpiece is attached to the neckpiece, and the other end is attached to the support plate. A regulating portion is formed in the neck piece to lock the support plate and prevent rotation of the support plate by the torsion spring, and the spring force in the elevation direction when the neck piece is at its maximum elevation angle is This can be achieved by a simple operation that does not require much force, such as simply locking the other end of the spring to the support plate before assembling it into the slotted portion of the upper part of the stand.

Attachment of the neckpiece to the slotted portion of the upper part of the stand can be carried out by a simple operation of fixing the support plate into a tsubo, and the assembly can be easily performed, which has great practical effects.

[Brief explanation of the drawing]

1 to 3 show a conventional example, in which FIG. 1 is an exploded perspective view, FIG. 2 is a front view of the torsion spring, and FIG. 3 is a cross-sectional view showing a discarded state during assembly. Figures 4 to 7 show one embodiment of the present invention.
The figure is an exploded perspective view of the neck pinis 9, FIG. 5 is an exploded cross-sectional view showing assembly, FIG. 6 is a vertical side view, and FIG. 7 is a vertical cross-sectional view. 21...Neck piece, 33...Support plate, 23...Torsion spring, 26...One end of torsion spring (7), 28...・Other end of torsion spring, 4
6...Step part (regulating part), 1...Stand upper slot, 36...Spring, 37...
...Clutch ball, engagement hole. 42...Kratschibo

Claims (1)

[Scope of utility model registration request] 1. A support plate is pivotally supported on a side surface of a neck piece that supports an electric motor part, one end of a torsion spring that applies a force in an elevational direction to the neck piece is latched to the neck piece, the other end is latched to the support plate, and the torsion spring is latched to the neck piece. A regulating part for driving the rotation of the support plate by a spring is formed on the neck piece, and unlike the case where the support plate is fixed to the stand upper slot part, the neck piece is fixed to the slot part. An elevation angle adjustment device for an electric fan, characterized by being pivoted to. □2. The neck piece is formed with a storage portion for a spring and a clutch ball, and the support plate is formed with a multiple clutch ball engagement hole. The electric fan elevation angle adjustment device according to item 1. ′