JPS62191697A - Face-up/down angle adjusting device for electric fan - Google Patents

Abstract

PURPOSE:To provide uniform faceup/down angle adjustment for an electric fan, wherein the head is supported with possibility of facing up and down as desired, by supporting a neck-piece in consolidation with a support for a motor for vanes with the aid of a torsion spring which is supported by a specific support construction. CONSTITUTION:An L-shaped support 7 for supporting a motor for vanes in the upper part is equipped in its lower part with a neck-piece 9 consolidated, which is inserted in a U-shaped adjusting plate 47, to whose bottom a spindle 12 is fixed. This adjusting plate 47 is provided with a notch 47a in the form of an arc of a circle at each of the upper edges on both sides, and the end parts 51a, 51b of a torsion spring 51 accommodated in a void 9b in said neck- piece 9 are detained with these notches. A lower hole in the neck-piece 9 accommodates balls 52, 52 which are pressed outward by a spring 53 and detained with either of a plurality of holes 47c formed in the lower parts of said adjusting plate 47 on its both sides, and when the neck-piece 9 is tilted round a shaft 49, the attitude of tilting can be held in a desired position.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a device for tilting and raising the head of an electric fan.

[Conventional technology]

Figures 17 to 19 are 9, for example, Utility Model Publication No. 49-43634.
FIG. 1T is a side view of the south wind fan.

FIG. 18 is a longitudinal sectional view of the main part, and FIG. 19 is an exploded perspective view of the main part.

In the figure, (61) is the M wind turbine head, which consists of two blades (62), a blade 11jlJ [(not shown), a guard (66), etc., and a pillar (64) erected on the base (64). 65), a neck support (66) and a neck piece (67), which will be described later.
), it is supported so that it can tilt up and down and vibrate its head. The neck support (66) forms the upper end of the strut (65) and has juxtaposed protrusions (66a) and (66b), with a groove (66c) inside the protrusion (66a). (6
7) is a neckpiece.

A hole (67a) that supports the head (61) so that it can swing.
) and the protruding pieces (66a) and (66b).
67b).

A shaft cylinder (67c) is formed at the center thereof. (s7
a) is an annular recess that accommodates a spring 9 (68) to be described later.

(67e) is a recess formed at the opening edge of the recess (67d).

(67f) is a groove formed on the upper surface of the recess (67d);
(68) is a torsion spring that absorbs half the torque due to the unbalanced load of the head (61), and is housed in the recess (67d) at both ends (
68a) is bent in the axial direction and protrudes outside the recess (67d), and the other end (681)) is bent in the radial direction and fits into the groove (s7).
r). (69) is a disc-shaped adjustment plate that is housed in the recess (67d), and has a hole (69a) in the center, and a spherical projection (69b) formed below the hole (69a). An arc-shaped elongated hole (69c) is formed above the neck piece (67), and a locking piece (69d) that engages with the recess (67e) of the neck piece (67) is formed on the periphery of the neck piece (67).

One end (6
8a) is prominent. (70) is the neck piece (67
) of the body (67b) and the protruding piece (66) of the neck support (66).
A position setting plate interposed in a non-rotatable state between a), which has a hole (70a) in the center, and below which a plurality of position setting plates are arranged on the rotation locus of the protrusion (s9b) of the adjustment plate (69). Protrusion (s9
A hole (7ob) is formed to engage with the tension spring (68), and a notch (70c) into which one end (68a) of the tension spring (68) is inserted is formed at the upper edge. And the twist spring (6
The tip of one end (68a) of 8) is pushed into @ (66c) of the projection (66a) of the neck support (66).

(71) is a neck pin inserted into the barrel (67a) of the neck piece (67) through the holes (70a) and (69a); (72) is a screw screwed into the tip of the neck pin (71); ) and the neckpiece 72), the neck piece (67) is pivotally supported δ on the neck support (66).

The conventional electric fan's elevation angle adjustment device is constructed as described above, and when the two heads (61) are tilted and raised against the force of the nine springs (68), the neck piece (67) moves from the 1IA1 joint plate ( 69) and rotates around the neck bin (71).

At this time, the protrusion (69b) of the adjustment plate (69) engages with the hole (7ob) of the position setting plate (70), so the neckpiece (67), that is, the head (61) is held in its tilted position. .

[Problem that the invention seeks to solve]

In the conventional electric fan elevation adjustment device as described above, one terminal (68a) of the tension spring (6B) is fixed and the other terminal (ssb) is moved according to the movement of the neckpiece (67), so that the elevation angle adjustment device The tension spring (68) operates so that its diameter is contracted, and in the depression angle operation, it operates so that its diameter increases. Therefore, the torsion spring (6
8) There is a problem that uniform elevation and elevation angle movements cannot be performed due to the different force relationships.

This invention was made in order to solve the above problems, and is capable of adjusting the elevation angle of an electric fan by moving a tension spring in the same direction for both depression angle operation and elevation angle operation to obtain a uniform elevation action. The purpose is to provide equipment.

[Failure to solve the problem]

The elevation angle adjustment device for an electric fan according to the present invention pivots the neckpiece with an adjustment plate having an arc-shaped notch formed on the upper edge,
This neckpiece is provided with a hollow space and an arc-shaped elongated hole corresponding to the notch, a torsion spring is housed in the hollow space, and both ends of the torsion spring are exposed through the elongated hole, so that the neckpiece is in a neutral position. When the neckpiece is rotated, the end of the upper T-shaped notch is pressed, and when the neckpiece is rotated, one end of the neckpiece is pressed by the end of the elongated hole.

[Function] In this invention, when the neckpiece rotates in one direction, one end of the torsion spring is supported and the other end moves in the direction to reduce the diameter, and the neckpiece rotates in the opposite direction to the above direction. When rotating, the other terminal is supported and both terminals move in the same direction to reduce the diameter, and the tension spring always deflects in the same direction.

〔Example〕

Figures 1 to 16 are views showing one embodiment of the present invention. Figure 1 is a vertical Wf view of the neckpiece portion, Figure 2 is a front view of the top of the neckpiece, and Figure 3 is a right side view. J side view, Figure 4 is an exploded perspective view of the neck digging rock structure, Figure 5 is a 1ll11 view (partial cross section) of the support part, Figure 6 is a partially enlarged view of Figure 1, and Figure 7 is Fifth
Figure 8 is a left side view of the neckpiece, Figure 9 is a front view of the spring stopper plate, Figure 10 is an illustration of the principle, and Figures 11 to 16 are explanations of operation. It is a diagram.

First, the overall configuration of the electric fan will be explained with reference to FIGS. 2 to 4. In the figure, (1) is the front guard, (2) is the front guard (1
The guard ring that forms the outer periphery of 1, (3) is the front guard (the rear guard where 1+ is held, and (4) is the front guard (
1+ and the blade stored in the rear guard (3), (5) is for the blade that drives the blade (4)! With the L motive, the above (1
) to (5) complete the configuration of the head (6) of the electric fan. (7) is formed into an almost L-shape and has an electric motor +5 for the blade at the top.
(5) is a supported support, and (8) is a handle fixed to the upper end of the support (7).

(9) is a support body (neck piece connected to the lower part of the force).

The recess is a holding piece that is attached to the neck piece (9) so that it can move in the vertical direction and prevents the lower part of the guard ring (2) from slipping out forward, and αυ is a neck piece cover that stores the neck piece (9). , 02 is a spindle that is fixed to a depression/elevation angle adjustment device (described later) housed in the neckpiece cover αυ and protrudes downward, α3 is a control box placed below the neckpiece cover Uυ, and σ is the case, α9 is a cover that covers the case α4, and ae is a decorative panel placed on the front side of the control box 03, on which pushbutton switches tID are arranged. The bet is fitted into case u4 and spindle az
(1!J is attached to the tip of the spindle uz and controls the upward movement of the spindle uz.
E ring and CXJ are inserted into spindle α2 and clutch stand C! The arm is frictionally connected to the spindle uz through υ, (2) is the oscillating motor fixed in the case α with screws via the support plate (c), and (c) is the bottle ( To)
A crank fixed to the shaft of the oscillating electric motor (2).

The punishment is a rod with one end attached to the tip of the crank (2) through a washer (to) and a screw CFJ, and the other end attached to the tip of arm 4, (7) is a time switch, and 0υ is the time. These are setting knobs, and the above-mentioned u force, α seconds, (to) to (1) are stored in the control box Q31. and 1 head (6)
The main body c33 of the electric fan is constituted by the above (7) to CID.

曾 is a column, (B) is a tube that forms the main part of the column and is connected to the lower part of the control box α at the upper end and prevented from escaping with a screw (G), and the lower end is a tube fixing screw. (to) base o71
is combined with The base C3n consists of a bottom plate (toward) and a decorative plate 09 covering the top surface thereof. IG is the bottom plate (to),
This is a cord that supplies power to the oscillating motor (2), two-blade motor (5), etc. through the tube (b).

In the electric fan constructed as described above, when power is supplied to the nine-blade fan mechanism (5), the two blades (4) are rotated to blow air through the front guard (1).

On the other hand, if one source is supplied to the 'tortoise mechanism @21 for swinging.

The crank (c) rotates and causes the rod (2) to reciprocate.

This movement is transmitted to the arm (4). As a result, the arm ■ swings around its axis, and the support body (7
) in a rocking motion. With this, one head (6) makes nine swing movements.

A well-known double swing mechanism is also provided at the joint between the lower part of the control box (a) and the tube (b), but the details will be omitted.

Next, the elevation angle adjustment portion will be explained with reference to FIG. 1 and FIGS. 5 to 16.

In FIG. 1 and FIGS. 5 to 9, (449 is a support (7)
) and the back of the neckpiece (9) with screws.

The support body (7) further has a neck piece (9) on both sides of its lower end.
) and is fastened to the neckpiece (9) with screws 0I. A cylindrical cavity (9b) that opens on one side is provided at the bottom of the neckpiece (9), and a shaft cylinder (9d) having a hole (9C) passing through the neckpiece (9) is provided in the center of the cavity (9b). ) is formed, and the shaft cylinder (9d
) radially protruding guide protrusions (9e) are arranged on the outer peripheral surface of the guide protrusions (9e). (9f) is an arc-shaped elongated hole that is placed above the uppermost guide protrusion (9e) and passes through the bottom of the cavity (9b).

(9g) is a plurality of pieces (3 in the figure) on the opening edge of the space (9b).
(9b) is formed and protrudes toward the center of the cavity (9b).

(9h) is a hole placed below the cavity (9b) and passes through the neckpiece (9), Cη is formed in a U-shape, the spindle IJ7J is fixed to the bottom, and there are arc-shaped notches on the upper edges of both sides. (47a) is formed, and a hole (47a) is formed in the center of the - side.
7b) is an adjustment plate provided with holes (47c) to be described later on both sides of the lower part, into which the lower part of the neckpiece (9) is inserted.

ha is a spring stopper plate placed at the opening of the hollow space (9b) of the neckpiece (9), with a hole (48a) passing through the shaft tube (9d) in the center, and a cutout of the adjustment plate Cη above the hole (48a). Missing (4
An engagement recess (48c) is formed at the peripheral edge of the arc-shaped elongated hole (48b) corresponding to the engagement projection (9g).

The spring stopper plate @barrel has an engaging recess (48c) and an engaging protrusion (9
Rotation is prevented by securing g), and the neck piece (9)
The spring stopper plate (integrated with the 4th ladder is pivotally supported on the adjustment plate cover η by bolt 01 and nut ■). (51) is stored in the hollow space (9b) of the neck piece (9) and the guide protrusion ( 9e), one end (51a) of which passes through the elongated hole (4ab) of the spring stopper plate 08, and the other end (51b) of which passes through the elongated hole (9) of the neck piece (9).
f) and extends outwardly through the notch (47a) of the adjustment plate un.
).

(52) are holes (52) that are formed in plural holes on both sides of the lower part of the adjustment plate CD and arranged in an arc centered on the bolt 141.
47c) from the inside, the ball is formed to have a larger diameter than the hole (47c) and is inserted into the hole (9h) at the lower end of the neck piece (9). When the two are assembled, the ball (52) on the hole (47b) side
) is inserted through this hole (47b). (56) is a hole (
(9h) is a push spring that presses the balls (52) and (52) outward, respectively; (54) is a screw that fastens the neckpiece cover αυ to the adjustment plate 9η.

In other words, if you tilt the two heads (6) forward or backward.

The neckpiece (9) rotates around the bolt (41).

The torsion spring (51) applies an appropriate restoring force to perform the upward and downward movement. First, the principle will be explained with reference to FIG.

When the torsion spring (51) is in the reference position, its two ends (sla) and (51b) are respectively pressing against the ends of the notch (47a), as shown in FIG. 10(a). During elevation movement, one terminal (51a) of the torsion spring (51)
) rotates in the direction of the arrow in FIG. (s
ob) rotates in the direction of arrow B, as shown in FIG. 10 (C1), and one end (51a) is supported by the notch (47a). In this way.

In both the elevation angle movement and the depression angle movement, the twist spring (51) moves in a direction in which its diameter is reduced, and the deflection in the same direction produces a return force.

Now, when the second head (6), that is, the neckpiece (9) is in the neutral position, as shown in Figs. 11 and 12,
Both ends (51a) and (51b) of the torsion spring (51) press the ends of the notch (47a) of the adjustment plate 0η, respectively.

When the head (6) is rotated in the elevation direction, as shown in FIG. and rotate.

The other terminal (51b) has an adjustment plate (4) as shown in FIG.
7] is pressed against the end of the notch (47a). Also,
When the yA part (6) is rotated in the depression angle direction, the other end (51b) of the torsion spring (51) is pressed against the end of the elongated hole (9f) of the neck piece (9), as shown in Fig. 16. and rotate.

As shown in FIG. 15, one terminal (51a) has an adjustment plate 07.
) is pressed against the end of the notch (47a). In this way, the torsion spring (51) exerts a return force by deflecting in the same direction. During this time, the push spring (56) is
2) and the ball (52) engages with the hole (47c), so the position of the neckpiece (9), that is, the head (6) is adjusted, and the angle of elevation can be set to an appropriate value. .

〔Effect of the invention〕

As explained above, in the present invention, the neckpiece is pivotally supported by an adjustment plate having an arcuate cutout formed in the upper edge, and the neckpiece is provided with a hollow space and an arcuate elongated hole corresponding to the notch. A tension υ spring is housed in the cavity, and both ends thereof are extended through the elongated hole, and when the neckpiece is in the neutral position, the end of the notch is pressed, and when the neckpiece is rotated, the end of the notch is pressed. Since one side is pressed by the end of the elongated hole, the torsion spring can be moved in the same direction in both the depression angle movement and the elevation angle movement, thereby making it possible to obtain a uniform elevation movement.

[Brief explanation of drawings]

1 to 16 are diagrams showing an embodiment of the elevation angle adjustment device for an electric fan according to the present invention, in which FIG. 1 is a longitudinal cross-sectional view of the neckpiece portion, a cross-sectional view taken along the line 1-1 in FIG. FIG. 2 is a front view of the electric fan, FIG. 3 is a right side view of FIG. 2, and FIG. 4 is an exploded perspective view of the swing mechanism. Figure 5 is a side view (partial cross section) of the support part, Figure 6 is a partially enlarged view of Figure 1, Figure 7 is an enlarged cross-sectional view of the inside part of Figure 5, and Figure 8 is the left side of the neckpiece. tllll surface view. Figure S is a front view of the spring stopper plate, Figure 10 is a diagram explaining the principle,
Figures 11 to 16 are operation explanatory diagrams, and Figures 11 and 1
Figure 2 is at neutral position, Figures 13 and 14 are at elevation angle, and Figure 15 is at neutral position.
16 and 16 are views showing the depression angle, FIGS. 17 to 19 are views showing a conventional depression/elevation angle adjustment device for an electric fan, FIG. 11 is a side view of the electric fan, and FIG. FIG. 19 is an exploded perspective view of essential parts. In the figure, (6) is the head, (9) is the neckpiece, (9b
) is a blank space, (9f) is a long hole, (471 is an adjustment plate,
(47a) is a notch. 08 is a spring stopper plate, (48b) is a long hole, (4!
l is the shaft (bolt). (51) is a torsion spring, (51a) is a terminal,
(sib) is another terminal. Note that the same reference numerals in the two figures indicate the same parts.

Claims (1)

[Claims] An adjustment plate comprising side walls parallel to each other and each having an arc-shaped notch at the upper edge of these side walls, and a lower part supporting the head of the fan and having a hollow space inside the lower part, the lower part being a side wall of the adjustment plate. a neck piece which is disposed between and rotatably supported by a shaft and has an arcuate elongated hole at a position corresponding to the notch of the adjustment plate; When the neck piece extends and is in the neutral position, it presses the end of the notch in the adjustment plate, and when the neck piece rotates, one of the terminals is pressed by the end of the elongated hole to reduce the diameter. A device for adjusting the elevation angle of an electric fan, which is equipped with an operating twist spring.