JP2588119Y2 - Neckpiece device for electric fan - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a neck piece device for supporting a head of a fan.

[0002]

2. Description of the Related Art Generally, a fan comprises a fan body 1 and a head 2 as shown in FIG. The electric fan body 1 comprises a base 3 and a support 4 provided substantially vertically on the base 3. The head 2 has a fan motor 5 and a propeller type fan 6 attached to the fan motor 5. The head 2 is attached to the upper end of the support column 4 via a neck piece device 9. 5a is a cover covering the fan motor 5.

The neckpiece device 9 has a pivot 11 on the lower surface on one end side of a main body 10. The pivot 11 is rotatable up and down via a pivot 12 at the upper end of the column 4. Supported. As shown in FIGS. 4 to 6, a hollow support shaft 13 protruding upward from the other end of the neck piece body 10 is integrally formed. Then, a stud 14 projecting from the lower surface of the fan motor 5 is inserted into the support shaft 13, and the head unit 2 is turned around the stud 14 in the horizontal rotation direction. In addition, the stud 14 is attached to the neckpiece body 10.
Is prevented from coming off by a set screw 15 screwed in from the side surface.

Further, the support shaft 13 of the neckpiece body 10
A rotating sleeve 16 is rotatably mounted on the outer periphery of the rotating sleeve 16. The rotary sleeve 16 includes a hollow shaft portion 17 rotatably fitted to the outer periphery of the support shaft 13 and a flange portion 18 integrally formed at a lower end of the hollow shaft portion 17.
A click stop mechanism 20 is provided between the flange portion 18 and the neckpiece body 10.

[0005] The click stop mechanism 20 comprises a small hole 21 formed in a part of the upper surface of the neckpiece body 10,
A coil spring 22 housed in the small hole 21; and a steel ball 2 disposed at an opening of the small hole 21 and elastically urged by the coil spring 22 in a direction protruding from the opening.
3 and a plurality of engaging recesses 24 formed on the flange portion 18 so as to be arranged close to each other on the same circumference centered on the hollow shaft portion 17. When the steel ball 23 is rotated by the above-mentioned force, the steel ball 23 is sequentially engaged with each of the engagement recesses 24 by the elastic force of the coil spring 22, and by this engagement, the rotating sleeve 16 is engaged. It is configured to be locked at a rotation position based on the position of the joint recess 24.

The fan motor 5 is provided with a swing motor 28 as shown in FIG. 6, and a crank 29 is attached to a rotating shaft 28 a of the swing motor 28. The protrusion 30 is integrally formed. A swing rod 31 is provided between the end of the crank 29 and the end of the protrusion 30. The swing rod 31 is rotatably connected to an end of the crank 29 and an end of the protrusion 30.

When the head 2 is manually pressed in the left-right direction from a state in which the head 2 faces the front of the fan body 1 as shown in FIG. 3, for example, the head 2 It rotates about a stud 14 inserted into the support shaft 13. At this time, since the rotating sleeve 16 fitted on the outer periphery of the support shaft 13 is connected to the head 2 via the swing rod 31, the rotating sleeve 16 rotates integrally with the head 2. Since the click stop mechanism 20 is provided between the rotating sleeve 16 and the neckpiece body 10, the head portion 2 is rotated in a predetermined direction with a proper sense of movement and locked at the rotated position. be able to.

In this state, the swing motor 2
Activating 8 causes crank 29 to rotate. Here, the crank 29 is connected to the rotating sleeve 16 via the swing rod 31.
The rotation sleeve 16 is locked to the neckpiece body 10 by the click stop mechanism 20 to suppress the rotation thereof.
The head portion 2 itself reciprocates around the stud 14, that is, makes a swing motion in response to the rotation of.

When assembling such a fan,
First, the neckpiece body 10 is attached to the upper end of the support 4 via the pivot shaft 12, and then the stud 14 of the head part 2 is inserted into the support shaft 13 of the neckpiece body 10, and the headpiece 2 is attached to the neckpiece body 10. Is to be attached.

In the state where the electric fan is assembled,
The rotating sleeve 16 fitted to the support shaft 13 of the neckpiece body 10 is prevented from being detached by the head portion 2,
Before the head part 2 is attached to the neckpiece body 10, when the neckpiece body 10 is inverted, the rotating sleeve 16 is easily detached from the support shaft 13, and further, the coil spring 22 of the click stop mechanism 20.
The steel ball 23 is also disassembled, so the neck piece device 9 is pre-assembled on the sub-assembly line, and the assembly is automatically supplied to the fan assembly line to complete the fan. It will be difficult to do.

Therefore, conventionally, FIGS.
As shown in the figure, a metal fitting a for temporary fixing is attached to the neck piece body 10 with a screw b, and the rotating sleeve 16 is attached with the metal fitting a.
Is temporarily stopped to prevent the detachment.

[0012]

However, in such a configuration, the cost is high because separate parts such as a temporary fixing bracket a and a fixing screw b are required. However, since it has to be attached to the neckpiece body 10, it is troublesome and troublesome, and there is a problem that the work efficiency is reduced.

The present invention has been made in view of such a point, and the purpose thereof is to easily and efficiently temporarily fix the rotating sleeve to the neck piece main body without requiring separate parts. An object of the present invention is to provide a neckpiece device for a fan.

[0014]

According to the present invention, in order to achieve such an object, a support shaft protrudes from an upper surface on one end side of a neck piece body, and a rotary sleeve is rotatably fitted to the support shaft. Further, in the neckpiece device of a fan provided with a click stop mechanism between the rotating sleeve and the neckpiece body, a long ridge is formed integrally with a part of the outer periphery of the rotating sleeve along a circumferential direction thereof. An engagement groove is formed in a part of the neck piece body to engage with the ridge in accordance with the rotation of the rotation sleeve, and the engagement between the engagement groove and the ridge forms the rotation sleeve. It is intended to prevent detachment from the support shaft.

[0015]

When the rotary sleeve is inserted into the outer periphery of the support shaft of the neckpiece body and rotated, the ridge of the rotary sleeve enters into the engagement groove of the neckpiece body and engages. The rotating sleeve is temporarily fixed to the neck piece main body, and detachment of the rotating sleeve from the support shaft is prevented.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. Note that the same components as those in the related art are denoted by the same reference numerals, and description thereof is omitted. On a part of the outer peripheral surface of the flange portion 18 of the rotating sleeve 16, a long ridge 18a is formed integrally and protruding along the circumferential direction. An engagement groove 10a is formed in a part of the neck piece body 10 so as to be disengageable from the ridge 18a.
The rotating sleeve 16 is supported by the support shaft 13 of the neckpiece body 10.
The projection 18a is engaged with the engagement groove 10a by the operation of rotating the rotary sleeve 16 by fitting into the engagement groove 10a.

When assembling the neck piece device 9, first, the coil spring 22 is inserted into the small hole 21 with the neck piece body 10 held horizontally, and the steel ball 23 is arranged in the opening of the small hole 21. . And support shaft 1
3, the rotating sleeve 16 is rotated by rotating the rotating sleeve 16 while pressing the steel ball 23 against the coil spring 22 with the flange portion 18 of the rotating sleeve 16 from above. Into the engagement groove 10a.

As a result, the ridge 18a and the engaging groove 10a are engaged with each other, and the rotation sleeve 16 is temporarily fixed to the neck piece main body 10 by this engagement, so that the rotation sleeve 16 is prevented from being detached from the support shaft 13.

According to such a configuration, a metal fitting for temporary fixing and a screw for fixing the same as in the prior art are unnecessary and the cost is low.
Then, by simply inserting the rotating sleeve 16 into the outer periphery of the support shaft 13 and rotating, the rotating sleeve 16 can be temporarily fixed,
Therefore, the work can be easily and efficiently performed.

The neck piece device 9 assembled by temporarily fixing the rotary sleeve 16 in this manner can be supplied to the main assembly line of a fan, so that the fan can be assembled efficiently.

[0021]

[Effect of the invention] As described above, according to the invention,
Temporarily fix the rotating sleeve to the neckpiece body easily, efficiently and inexpensively without using temporary fixing brackets or fixing screws simply by inserting the rotating sleeve into the support shaft of the neckpiece body and rotating. Can be.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a neckpiece device according to an embodiment of the present invention.

FIG. 2 is a side view of the assembled state of the neck piece device.

FIG. 3 is a perspective view of an electric fan.

FIG. 4 is a side view of a conventional neck piece device used for the electric fan.

FIG. 5 is an exploded perspective view of the neck piece device.

FIG. 6 is a plan view showing a connection structure between the neck piece device and a head portion of the electric fan.

[Explanation of symbols]

 9: Neckpiece device 10: Neckpiece body 10a: Engagement groove 13: Support shaft 16: Rotating sleeve 18a: Ridge 20: Click stop mechanism

Claims (1)

(57) [Scope of request for utility model registration] A support shaft protrudes from an upper surface on one end side of a neck piece main body, a rotary sleeve is rotatably fitted to the support shaft, and a click stop mechanism is provided between the rotary sleeve and the neck piece main body. In the neck piece device of the electric fan, a long ridge is formed integrally on a part of an outer periphery of the rotating sleeve along a circumferential direction thereof, and a part of the neck piece main body is provided for rotation of the rotating sleeve. An engagement groove for engaging with the ridge in response to the engagement groove and the ridge to prevent the rotating sleeve from being detached from the support shaft. Neckpiece device.