JPS5874209A - Foaming method of vertical spindle - Google Patents

Abstract

PURPOSE:To obtain parts which are high in dimension accuracy of each part, have a mass-productivity and are inexpensive, by forming a longitudinal groove of a vertical spindle when drawing out a base material, before working. CONSTITUTION:A shape 11 which has formed a longitudinal groove 6 of a vertical spindle 7 used for an oscillating device of a fan, when drawing out a base material is cut-worked by a lathe, etc., and a gear is cut by a hob 12. Accordingly, a process for making the longitudinal groove 6 by a broach type can be omitted, both time and expense are saved, and it is possible to obtain parts which are high in dimension accuracy and have a mass-productivity.

Description

[Detailed Description of the Invention] This invention relates to a bar used in a fan head/oscillation device.
As shown in Figs. 1 and 2, this type of device has a cylindrical convex portion Gl) on the upper surface of the worm wheel μ<12, and 4111 balls ( 5
) The rim also has a slightly larger U-shaped notch (3),
The tip side of the plate spring 0), which has a flat plate formed into a U-shape KF, is made of steel #
(6) Make a slightly small hole (4111) on the side to act as a clutch, and insert a steel ball (6) into the upper ayu notch (3).
The worm wheel is formed so that it is loosely fitted into the worm wheel, and the opening (8) at the center of the worm wheel (l) has two locations on the outer circumference so as to engage with the steel ball (5) positioned by the leaf spring (0). A vertical spindle with a semicircular vertical groove (6) is fitted into the shaft (9) is the shaft of an electric motor with a worm gear on one end and a worm gear on the other end. A rotary blade is provided.

Next, to explain the operation, the rotational force of the worm gear of the shaft (9) rotates the worm wheel A/ (1), which is held by the leaf spring (4) and is held by the copper ball (5). Combined birch force〃spind A'<nK axis (1
The rotational force of 1) is transmitted, and the electric fan oscillates.

Next, when the partica spindle (7) is locked, the rotational force of the shaft (9) similarly rotates the worm wheel (1), but the vertical spindle ~ is in a locked state. , the convex part e) K of the worm wheel (l), the steel ball (5) resists the pushing force of the clutch spring (4), and the outer periphery (6a) of the vertical tip μ K The rotation of the shaft (9) through K is ensured by repeating this process: it rides up, falls into the groove (3) K on the opposite side shifted by 18 G', and rides on the outer periphery (6a) again.

The conventional device is configured as described above.
In order to form semicircular longitudinal grooves (6) at two opposing locations on the outer periphery (6a) of the vertical spindle, first cut the material with a lathe as shown in Figure 8, and then cut the material with a hob (2).
K, cut the teeth. Furthermore, it is necessary to remove the blemishes with a machine such as a broach, or to cut them using a sunburner, which poses many problems in terms of time, cost, and dimensional accuracy.

In order to eliminate the above-mentioned problems, this invention forms a semicircular vertical groove on the outer periphery of the vertical spindle (when using the material (round steel) for making the vertical spindle), and the vertical groove is formed by secondary processing. The purpose is to obtain a vertical spindle that requires less processing time and is less expensive.

An embodiment of the present invention will be described below with reference to Fig. 4. In the figure, (2) is a profiled material (2) in which the vertical grooves (6) of the vertical spindle (7) are formed when the material is pulled out. By cutting this irregularly shaped material using a lathe or the like and cutting gears using a hob, the step of creating vertical grooves (6) using a broach mold, which was performed in the conventional method, can be omitted.

As described above, according to the present invention, by forming the vertical grooves (6) of the vertical spindle in the raw material before processing, it is possible to obtain inexpensive parts that are mass-producible and have high dimensional accuracy in each part. effective.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the configuration of the gears of a conventional fan oscillation device, Fig. 2 is an exploded perspective view thereof, Fig. 8 is a process diagram showing the manufacturing process of a conventional vertical spindle μ, and Fig. 4 is FIG. 3 is a process diagram showing the manufacturing process of the vertical spindle of the present invention. In addition, the same reference numerals in each figure indicate the same or equivalent parts.
1) is the worm wheel, (2) is the convex part, and (3) is the cut-off part.
j Obe, (4) is a board, (4&) is a hole, (5) is a steel ball, (6) is a vertical groove, (6m) is a parscal spinto! Outer circumference, (7) is vertical spindle, (8) is opening, (9
) is the shaft, (2) is the worm gear, 01) is the profiled material, (2
) is a hob type, and (to) is a brooch type. Agent Shin Kuzuno - Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] A method for forming a nine-perch spindle by cutting the circumferential side walls of the deformed material to a predetermined radius and forming it by gear cutting.