JPS6048677B2 - Fan - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a fan with a simple structure in which the pillars protruding from the fan base are reinforced, the slide pipe can move smoothly up and down, and assembly work can be easily performed. be.

The present invention will be explained below based on embodiments shown in the drawings.

Reference numeral 1 indicates an electric fan of the present invention, which includes a synthetic resin box-shaped base 3 on which a support 2 is integrally provided, a slide pipe 4 attached to the support 2 so as to be vertically movable, and a slide pipe 4 attached to the upper end of the pipe 4 so as to be vertically movable. It consists of a fan head 5 that is attached to the fan.

The head 5 includes a mounting member 6 for attaching to the pipe, a neck piece 7 pivotably supported on the material so as to be able to move up and down, an electric motor 8 attached to the neck piece so as to be swingable, and a rotating member protruding from the front of the electric motor. It consists of a blade 10 fixed to a shaft 9 and front and rear guards 11 that cover the blade.

A movable body 12 is fixed to the lower end of the slide pipe 4 located within the base 3.

The movable body 12 includes a cylindrical portion 13 for attaching to the pipe, and a substantially V-shaped elastic bifurcated portion 14 integrally formed with the cylindrical portion.
Guide protrusions 15 are formed on both side edges of the outer surface of the bifurcated portion 14. Further, a guiding and locking projection 16 is formed at the center of the outer surface of the bifurcated portion 14. The movable body 12 includes a coil portion 1 of a constant force spring 17 that urges the slide pipe upward.
It also serves as a holding frame for storing 8. In this embodiment, the coil portion 18 is not wound on a winding drum, but the spring itself is housed in the movable body 12. However, in a structure in which the coil portion is wound on a winding drum, By making the pivot shaft of the winding drum protrude from the side surface of the movable body, the guide and locking projection can also be used as the pivot shaft. A pair of substantially L-shaped reinforcing guide bodies 19 are attached to the base 3 for guiding the movable body 12 and reinforcing the support column 2 and the base 3.

The guide body 19 is formed by bending a sheet metal. The upper end of the guide body 19 is locked to a locking portion formed on the upper part of the support column, and the lower end is fixed to a boss 20 vertically provided within the base 3. At this time, the pair of guide bodies 19 are positioned facing each other so that their lower ends face in opposite directions. The portion of the guide body 19 located inside the support column 2 has a concave cross section, and a groove 21 extending in the vertical direction is formed in the center thereof.
Further, a locking protrusion 22 is formed at the upper part of the groove 21.
The movable body 12 is inserted into the support column 2 together with the slide vibe 4 so that both sides of the guide body 19 of the movable body 12 are held by the guide protrusions 15. Therefore, the slide vibrator 4 can be moved up and down smoothly without rattling or the like. The guide locking protrusion 16 of the movable body 12 moves up and down in the groove 21 of the guide body 19, and when it moves to the top, the protrusion 16 abuts the locking protrusion 22, causing the movable body to move. Further upward movement of the body 12 is prevented. Further, since the slide vibrator 4 is biased upward by a constant force spring 17, the protrusion 16 is pushed forward via the locking protrusion 22. Recording guide 1
9 is lifted upward, and the guide body 19 is reliably engaged with the upper part of the column 2 during assembly and repair, and the guide body 19 is securely held without coming off from the column 2. A through hole 24 for a screw 23 to be screwed into the boss 20 is formed at the lower end of the guide body 19.

Notch-like engaging portions 25 are formed on both sides of the lower end of the guide body 19 at positions sandwiching the insertion hole 24 . A pin-shaped temporary holding portion 26 is vertically provided at a portion of the base 3 that sandwiches the boss 20. Therefore, the temporary holding part 26 with the guide body 19 attached to the base 3 engages with the engaging part 25 of the guide body 19 to ensure that the insertion hole 24 and the boss 20 are aligned. Further, expansion around the upper end of the guide body 19 is also reliably prevented. The movable body 12 is inserted in such a way that the two forked parts 14 opened in a V-shape are parallel to each other against the elastic force thereof, and their expansion is prevented by the guide body 19. Therefore, the guide body 19 tends to expand due to the elastic force, but the expansion is reliably held by the temporary holding portion 26 and the guide body 1
Even if 9 is not fixed to the boss 20, it will not expand,
Assembly can be done smoothly. A bottom plate 27 made of sheet metal that closes the lower surface of the base 3 is fixed at its four corners to bosses 28 hanging from the base with screws.

Further, a screw 23 inserted through an insertion hole 29 formed in the center portion of the bottom plate 27 is screwed into the boss 20 to fix the base 3, the guide body 19, and the bottom plates 2 and 7 simultaneously and integrally. . Therefore, the support column 2 is reinforced by the guide body 19, which does not wobble due to its lower end being supported by the bottom plate 27, so that only the guide body is simply fixed to another boss suspended from the base. In comparison, the reinforcement is more solid and solid. In this embodiment, the guide body 19 and the bottom plate 2
7 is fixed to the boss 20 with a screw 23, but even if the boss 20 is structured to pass through insertion holes 24 and 29 formed in the guide body 19 and the bottom plate 27, the They do not work individually and produce similar effects. The bottom plate 27 is formed with a through-hole-like engagement portion 30 that engages with the temporary holding portion 26 . Therefore, the bottom plate 27 can be easily positioned with respect to the base 3, and the insertion hole 29 and the boss 20 can be easily aligned. Further, the bottom plate 27 is formed with a groove locking portion 31 for preventing movement of the guide body 19 about the boss 20, that is, so-called twisting of the guide body. Therefore, even if a force in a torsional direction is applied to the guide body 19 when the slide vibrator 4 tries to rotate due to the swinging motion of the head 5, it can be held securely without being twisted. As described above, the present invention
A synthetic resin base with a pillar protruding from it, a slide vibrator with a fan head attached to the upper end that is mounted on the pillar so as to be movable up and down, a movable body mounted on the lower end of the vibe, and the upper end of which is attached to the upper part of the pillar. The guide body is comprised of a pair of substantially L-shaped reinforcing guide bodies that are locked and guide the movable body, and a bottom plate that is fixed to a boss that fixes the lower end of the guide body hanging from the base. The bottom plate and the bottom plate are integrally fixed to the boss, and the guide body alone does not wobble against the base, making the reinforcement of the column solid, and the slide vibe is guided by the guide body with less rattling. This has various effects, such as being able to move up and down smoothly without rattling.

[Brief explanation of the drawing]

Fig. 1 is a side view of the electric fan of the present invention, Fig. 2 is a sectional view of the main part,
Figure 3 is a bottom perspective view of the base, Figure 4 is a perspective view of the guide,
Figure 5 is a perspective view of the lower part of the slide vibrator, Figure 6 is a perspective view of the bottom plate, Figure 7 is a sectional view taken along the line ■-■ in Figure 2, and Figure 8 is a perspective view of the bottom plate.
It is a sectional view taken along ■-■ in the figure. 2... Support, 3... Base, 5...
...Fan head, 4 ...Slide vibe, 1
2... Movable body, 19... Guide body, 20
...Boss, 27...Bottom plate, 23...
...screw, 31...locking part, 16...
・Protrusion, 21... Concave groove, 22... Protrusion, 26... Temporary holding part, 25, 30...
Engagement part.

Claims (1)

[Scope of Claims] 1. A synthetic resin base with a protruding support, a slide pipe that is attached to the support for vertical movement and has a fan head attached to its upper end, and a movable body attached to the lower end of the pipe. , a pair of approximately L whose upper ends are locked at the upper part of the column and which guide the movable body.
An electric fan comprising a letter-shaped reinforcing guide body and a bottom plate fixed to a boss that fixes a lower end of the guide body hanging down from the base. 2. The electric fan according to claim 1, wherein the guide body and the bottom plate are fixed at the same time by screws that are screwed into the bosses. 3. The electric fan according to claim 1 or 2, wherein a locking portion is formed on the bottom plate to prevent movement of the guide body about the boss. 4. The electric fan according to claim 3, wherein the locking portion is formed as a recess. 5. The electric fan according to claim 1, wherein a protrusion is formed on one of the facing surfaces of the movable body and the guide body, and a groove into which the protrusion is inserted is formed on the other side. 6. The electric fan according to claim 1 or 5, wherein the slide pipe is biased upward by a constant force spring, and a projection is formed on the upper part of the guide body, with which the movable body comes into contact. 7. The electric fan according to claim 1, wherein a temporary holding part is formed on the base to prevent expansion around the upper end of the guide. 8. The electric fan according to claim 7, wherein the engaging portion of the pin is formed on the lower end of the guide body and the bottom plate.