JPH0343435Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to a device for adjusting the elevation angle of a fan head.

<Prior Art> As shown in FIG. 8, a conventional electric fan elevation angle adjustment device includes a neck holder 22 formed on the upper part of a stand 21 and a pivot supported on the neck holder 22 via a main shaft 23 so as to be vertically movable. Netsuku piece 2
4, and a spindle 26 provided on the neck piece 24 to support the fan head 25 in a double-oscillating manner.
and a balance spring 27 that applies a force that cancels the eccentric center of gravity torque of the fan head 25 as the fan head 25 is adjusted in elevation by a small vertical angle with respect to the horizontal line.
, an elevation positioning plate 28 provided on the neck holder 22, and an adjustment locking device 29 capable of locking and holding the neck piece 24 (that is, the fan head 25) to the elevation positioning plate 28 at a plurality of elevation adjustment positions. It was bright.

The adjustment locking device 29 is connected to the elevation positioning plate 2.
It consists of a plurality of holes 30 formed at 8 and a snap ball which is biased outwardly by a spring on the lower protrusion 31 of the neck piece 4, and the snap ball can be inserted into any hole 30 by moving the fan head 25 up and down by hand. By maintaining the fit, it is possible to adjust the small depression/elevation angle range B shown in the horizontal line A in Figure 6, and rotate the fan head to a desired position within the double swing range G as shown in Figure 7. The structure was such that it could automatically oscillate left and right around that position.

Therefore, if an attempt is made to send air while automatically swinging the fan head 25 vertically in the above-mentioned manner, a motor and a vertical swinging mechanism must be added exclusively for the vertical swinging, which has the disadvantage of increasing costs. Ta.

Furthermore, in the above, when attempting to adjust the angle of the fan head 25, that is, the neck piece 24 upward by 90 degrees with respect to the horizontal line A (see Fig. 4), the horizontal widths of the elevation positioning plate 28 and the neck holder 22 are widened. Additionally, there is a drawback that the balance spring 27 must be replaced with an expensive one with a large operating load.

<Purpose> The present invention was devised with the above points in mind. By changing a part of the neck piece, it is possible to automatically swing the fan head up and down without the need for a dedicated motor for vertical swing. The purpose of this invention is to provide a device for adjusting the elevation angle of an electric fan.

<Embodiment> Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. A neck piece 4 is pivotally supported via a main shaft 3 so as to be vertically and vertically rotatable, a spindle 6 is provided on the neck piece 4 so as to support the fan head 5 in a double-oscillating manner, and the fan head 5 is vertically and vertically rotated with respect to the horizontal line A. A balance spring 7 that applies a force to cancel the eccentric center of gravity torque of the fan head 5 as the elevation angle is adjusted by a small angle B; and an elevation positioning plate 8 provided on the neck holder 2 (the plate 8 is a and an adjustment locking device 9 capable of locking and holding the neck piece 24 (that is, the fan head 5) to the elevation positioning plate 8 at a plurality of elevation adjustment positions.

The neck piece 4 is constructed by fitting a neck piece body 10 and an elevation/rotation piece 11, which are formed separately from each other, onto the main shaft 3 so as to be rotatable, and the spindle 6 is attached to the neck piece body 10. At the same time, the balance spring 7 is installed in the elevating/elevating rotating piece 11, and switching means such as a manual operation bolt 12 is provided for switching the neck piece main body 10 and the elevating/elevating rotating piece 11 between an integrally interlocking state and a separate, single-acting state. and a locking means C for locking the neckpiece body 10 to the neck holder 2 or the elevation positioning plate 8 with the fan head 5 (neckpiece body 10) rotated approximately 90 degrees upward with respect to the horizontal line A, The locking means C is composed of a stop edge 2b of the neck holder 2 and an engaging edge 10d of the neck piece body 10.

The neck piece main body 10 and the elevating and rotating piece 11 have shaft holes 10a and 11a penetrating through both side surfaces, respectively.
At the same time, the elevating and rotating piece 11 has a spring storage recess 1 on one side on the outer periphery of the peripheral wall of the shaft hole 11a.
1b, a locking groove 11c is formed at a proper location on the outer circumference of the spring storage recess 11b, and a protrusion 11d is integrally provided at a proper location on the outer circumference. Further, a through hole 10b is formed in one side wall of the neck piece body 10, a through hole 10e is formed in the elevation/rotation piece 11, and a screw hole 10c is bored in the other side wall of the neck piece body 10.
b, 10e, and 10c by passing the bolts 12 through them. This fixed state is the left-right swinging state shown in FIGS. 2, 6, and 7 (the state in which the neck piece body 10 and the elevation/rotation piece 11 are integrally interlocked). In addition, the main shaft 3
The nut 3a is inserted into the threaded end portion by sequentially fitting it into the through shaft hole 2a of the neck holder 2, the shaft hole 10a of the neck piece body 10, the shaft hole 8a of the elevation positioning plate 8, and the shaft hole 11a of the elevation rotation piece 11. By screwing, each component is pivotally supported to the neck holder 2 so as to be able to move up and down.

The balance spring 7 is a coiled spring having a force that cancels out the eccentric center of gravity torque of the fan head 5 as the elevation angle of the fan head 5 is adjusted.
One spring end is engaged with the locking groove 11c, and the other spring end is engaged with the locking groove 8b of the elevation positioning plate 8, respectively. The adjustment locking device 9, which locks and holds the fan head 5 at a plurality of adjustment positions, is located between the elevating and rotating piece 11 and the elevating and positioning plate 8.
A recessed hole 11f formed in the recessed hole 11f, a snap spring 13 housed in the recessed hole 11f, a snap ball 14 located on one side (or both sides) of the spring 13, and a plurality of (five) snap balls provided at corresponding positions engage with each other. The fan head 5 is opened by the engagement of the snap ball 14, which is configured with a hole 8c and is biased by a spring 13, and the engagement hole 8c.
is locked and held in any adjustment position. In the figure, 8d is a stopper formed on the elevating positioning plate 8 to prevent the elevating and elevating rotating piece 11 from rotating more than necessary. 2c is an elevation positioning plate holder fixed to the upper part of the neck holder 2.

In the above configuration, the main body 10 of the neck piece 4
If the bolt 12 is screwed into the elevation/elevation rotation piece 11 by hand, the elevation/elevation rotation piece 11 and the neck piece main body 10 will be in an integrally interlocked state, and the elevation/elevation angle can be adjusted within the range of angle B shown in FIG. That is, the fan head 5
The snap ball 14 can be locked to any part of the engagement hole 8c by holding it by hand and lowering or lifting it a little forcefully. When the electric fan is operated in an oscillating state, it oscillates from side to side (see Fig. 7). This method of use is the same as that of a normal electric fan, but by turning the bolt 12 by hand, the neckpiece body 1
When the bolt 12 is removed from the 0 and the elevation/rotation piece 11, the neck piece body 10 and the elevation/rotation piece 11 can move independently, and when the fan head 5 is pushed by hand,
The neckpiece main body 10 rotates upward 90 degrees regardless of the stopper 8d of the elevation positioning plate 8.
The fan head 5 faces upward in FIG. 4, and the locking edge 10d of the neck piece body 10 hits the locking edge 2d of the neck holder 2 as shown in FIG. 3, and the fan head 5 stops at that position. In this state, as shown in Fig. 5, the fan head 5
If you hold the fan in your hand and swing it to the right (or left) within the double left/right swing range E from the vertical line D, and perform normal left/right swing at an angle F around that position f, the fan head 5 If you look at the swinging state of the head from the front (from the right side of FIG. 5), you will see that the head is swinging up and down relative to the person.

However, at this time, the fan's elevation angle adjustment device cannot be used. However, if the bolts 12 are screwed onto the neck piece body 10 and the elevation/elevation rotation piece 11, the electric fan can be used as a fan capable of normal elevation/elevation angle adjustment and double left/right oscillation.

Note that the present invention is not limited to the above-mentioned embodiments, and it goes without saying that many modifications and changes can be made to the above-mentioned embodiments within the scope of the present invention. For example, the switching means for switching the neck piece body 10 and the elevation/rotation piece 11 into an integrated state or a separate state is not limited to the bolt 12, but may also use a removable pin or an engagement tool. The locking means C for locking the neck piece main body 10 to the neck holder 2 or the vertical positioning plate 8 in the oriented state may be constructed using holes, bolts, or the like.

<Effects> As is clear from the above explanation, the present invention consists of a net holder formed at the top of the stand, a neck piece pivoted to the net holder via a main shaft so as to be vertically and vertically rotatable, and a fan head attached to two parts. A spindle provided on the neck piece to support the fan head in a swingable manner, and a balance spring that applies a force to cancel the eccentric center of gravity torque of the fan head as the fan head is adjusted in elevation by a small vertical angle with respect to the horizontal line. In the elevation angle adjustment device for an electric fan, the device includes an elevation positioning plate provided on the neck holder, and an adjustment locking device capable of locking and holding the neck piece to the elevation positioning plate at a plurality of elevation adjustment positions, wherein the neck piece A neck piece body and an elevation/rotation piece formed separately from each other are rotatably connected, and the spindle is attached to the neck piece body, and the neck piece body and the elevation/rotation piece are integrally interlocked. A switching means is provided for switching between a separate single-acting state, and the elevating/elevation rotating piece is equipped with the balance spring; A locking means is provided for locking the neck piece body to a neck holder or an elevation positioning plate, and when the fan head is automatically oscillated up and down, the neck piece body is rotated approximately 90 degrees upward with respect to the horizontal line in a separate and single-action state. The double oscillating mechanism rotates the fan head to the right or left with respect to the vertical line around the spindle at a desired angle, and performs an automatic oscillating motion around that position.

Therefore, according to the present invention, by changing a part of the neck piece, that is, by configuring the neck piece by rotatably connecting the main body and the elevation/rotation piece, when the head of the fan is automatically oscillated up and down, The neck piece body alone is rotated approximately 90 degrees upwards relative to the horizontal line in a separate single-acting state, and the fan head is swung from the vertical line to the right or left using the double oscillation mechanism, and the head oscillates around that position. The fan head can be automatically oscillated up and down without the need for a dedicated motor for oscillating it up and down, and can be provided at low cost.

During this automatic vertical swing, the elevating/elevating rotating piece only needs to be held in engagement with the elevating/elevating positioning plate, so there is no need to widen the horizontal widths of the elevating/elevating positioning plate and the neck holder.

In addition, when the neck piece main body is rotated 90 degrees upward with respect to the horizontal line in a separate single-action state, the elevation rotation piece is held locked to the elevation positioning plate by the adjustment locking device. The balance spring built into the elevating and rotating piece is completely separated from the fan head, so there is no need for the balance spring to apply a force to counteract the eccentric center of gravity torque of the fan head, and the operating load is applied to the balance spring. There is no need to use a large spring, and an inexpensive balance spring can be used, which is an excellent effect.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of an embodiment of the fan elevation angle adjusting device of the present invention, with the fan head facing forward, Fig. 2 is a cross-sectional view of the assembled fan, and Fig. 3 is a side view of the fan head facing upward. Figure 4 is a side view of the electric fan with the fan head facing upward, Figure 5 is a front view of Figure 4, Figure 6 is a side view of the electric fan with the fan head facing forward, and Figure 7 is a side view of the electric fan with the fan head facing upward. FIG. 6 is a plan view, and FIG. 8 is a side view of a conventional elevation angle adjustment device for an electric fan. A: horizontal line, B: small vertical angle, C: locking means,
1: stand, 2: neck holder, 2b: retaining edge, 3: main shaft, 4: neck piece, 5: fan head, 6: spindle, 7: balance spring, 8: elevation positioning plate, 9: adjustment locking device, 10: Neck piece body, 10d: Engagement edge, 11: Elevation and rotation piece, 12: Manual operation bolt.

Claims (1)

[Scope of Claim for Utility Model Registration] A net holder formed on the upper part of the stand, a neck piece pivoted to the net holder via a main shaft so as to be vertically and vertically rotatable, and a fan head supported in a double-oscillating manner. a spindle provided on the neck piece; a balance spring that applies a force to cancel the eccentric center of gravity torque of the fan head as the elevation angle of the fan head is adjusted by a small vertical angle with respect to the horizontal line; and a balance spring provided on the neck holder. An elevation angle adjusting device for an electric fan, comprising: a positioning plate; and an adjustment locking device capable of locking and holding a neck piece to the elevation positioning plate at a plurality of elevation adjustment positions, wherein the neck pieces are formed separately from each other. The neck piece body and the elevation/elevation rotation piece are rotatably connected to each other, and the spindle is attached to the neck piece body, and the neck piece body and the elevation/elevation rotation piece can be put into an integrally interlocking state or a separate single acting state. A switching means is provided for switching, the elevating/elevating rotation piece has the balance spring installed therein, and the neck piece body is rotated approximately 90 degrees upward with respect to the horizontal line in a separate single-action state, and the neck piece body is placed in the neck holder or the elevating/elevating piece. A locking means for locking the positioning plate is provided, and when the fan head is automatically oscillated up and down, the neck piece main body is rotated approximately 90 degrees upward with respect to the horizontal line in a separate single-action state, and the double oscillation mechanism An elevation angle adjustment device for a fan, characterized in that the head of the fan is rotated at a desired angle around a spindle to the right or left with respect to a vertical line, and automatic swinging motion is performed around that position. .