JPS58152199A - Fan - Google Patents

Abstract

PURPOSE:To enable to position a cap member positively and to prevent relative rotation of the same, by attaching a press-molded, oscillating gear box having a cap member and an oscillating means to a rear case of a fan motor, and forming the cap member with a recess coupled with a mating projection formed at the rear face of a motor and a flange-like extension to be inserted into an elongated hole of the rear case. CONSTITUTION:A motor 3 includes a front case 11 and a rear case 13 to which an oscillating gear box 4 is fixed. The gear box 4 is press-molded in a unitary manner to have a cylindrical recess 45 fitted with a mating projection 18 of the rear case 13. Further, a cap member 19 formed with a unitary, flange-like extension 47 to be fitted into an elongated hole 46 formed at a position spaced away from the projection 18 is attached to the rear case 13. With such an arrangement, it is enabled to achieve longitudinal and vertical positioning of the component parts to a motor by the function of the recess 45 formed in the cap member 19 and to achieve horizontal positioning and prevention of relative rotation of the component parts by the engagement of the elongated hole 46 and the flange-like extension 47.

Description

[Detailed description of the invention] The present invention relates to the structure of an oscillating gear box for an electric fan.

Conventionally, an aluminum die-cast motor case was integrally molded into the oscillating gear box of an electric fan. As a result, the motor case bottom cover mold became complicated, and when the motor specifications changed and the case size changed, the gear box also had to be changed. To improve this point, the gear box was formed by sheet metal pressing.
However, with press molding, there is a misalignment in the meshing of the gears that provides accuracy due to the distance between the shafts and the depth of the box, causing abnormal noise and uneven wear. This was done in view of the points related to the present proposal, and a neck gear box equipped with a swinging device is attached to the rear case of the motor, and a lid body is covered with the swinging gear box. A substantially cylindrical recess is formed on the body to fit the convex i1s[fE formed in the rear case, and the convex part 9 is bored at an appropriate position at the opening end of the recess at a distance from the opening edge of the elongated hole of the rear case. It has a structure in which an overhanging edge is formed to fit along the shaft, and by making such a structure, the positioning of the lid relative to the motor is ensured and rotation is prevented, and the dimensional precision f4 of the swinging device is improved. It has an effect.

An embodiment of the present invention will be described below with reference to Figures 1 to 7 of a fan head with front and rear guards and blades removed. Peace (2
) so that the angle of elevation can be adjusted freely.

The as+i+ is the motor (3) that rotates the blade t-
) and the oscillating gear box (4) installed after the motor (1iK)
This is combined with the cover plate (6) installed at the WI1 opening of the decorative cover (5) that covers the motor (3) and the gear box (41), and the decorative cover t5. The motor 13) holds a stator (7) and a bearing 1L (It-shaped sheet metal press*) that pivotally supports the front half of the printing shaft (9) of the rotor (8).
The front case ■ of ai, the rear case I placed at the bottom of a sheet metal press in which a bearing port for pivotally supporting the rear half of the rotating shaft (9) is formed, and the rear case I and the construction p
The rear pivot shaft 4 for attachment to the neckpiece (2) of the front case I is supported and installed via a support member. Cover plate 181 K: dThe rotating shaft 1
A rear guard spray cylinder is provided protrudingly surrounding 91. The rear case σJ and the front case (ill, !:) are fixed at their contact edges with screws αη.

A cylindrical projection α8 is formed in the portion of the rear case (131) where the bearing Q3 is formed.

The bottom part of the gear box (4) is formed in the oscillating gear box 14) in the form of a gutter by forming a sheet metal press, and the top thereof is covered with a lid made of synthetic resin. (4) A ninth fixing piece (e) is formed on the front edge of the green L and side parts of 111 to be fixed to the rear surface of the rear case U3 with screws. tffl! on the bottom of the screen. A through hole (A) through which the pinion shaft constituting (C) is inserted and a through hole (E) for fixing the oscillating crankshaft are formed. A pinion 4 is formed in the protruding part from the bottom 4 of the said pinion @ 4, and a clutch ball which is urged outward by a spring (2) is inserted into the insertion hole (7) formed in the middle of the shaft. (to) is housed, and an annular enclosure #(to) is formed at the upper end K of which the heir for vertical movement operation of the pinion shaft is attached. The pinion shaft (2) has an internal tooth 04 that engages and disengages with the clutch ball (2) on the bottom surface of the 0[+7 ohm wheel (2) on which the worm wheel (2) is supported. ) is inserted through the cylindrical shaft (7)tm, and the lower end of the m- is in contact with the bottom part (2). The worm wheel) engages with the worm (b) formed at the rear end of the rotating shaft (the crankshaft). A VC image is provided on the bottom surface of the bottom SM.

At the same time as the crankshaft is installed vertically, the oscillating crank gear @ is pivotally supported by the crankshaft. One end of an AT swing connecting rod 4 is pivotally supported on the lower surface of the gear 0 that meshes with the pinion 4 on the gear. The neck piece (2) is pivotally supported on the other layer of the connecting rod. The rotational force rxm of the motor (3) is distributed from the worm (2) to the worm wheel □□
□, from the inner teeth ■ of the wheel (7) to the clutch ball c
It is transmitted to the above-mentioned binion shaft via the above-mentioned pinion, and from the above-mentioned binion to the crank gear. The crank gear□
Due to the crank movement of the slow-return rod,
L-shaped tongue pieces -t' are provided on the four rear edges of the bottom of the gear box 14), which performs nine-plane vibration interlocking with the axis I at the center of the m111i11, and a screw hole is provided in the rising part of the tongue piece. The decorative cover (5) is fixed by a screw which is screwed into the core screw hole. The gear box (4) is fitted with the lid a9 made of synthetic resin.A retaining hole is formed in the side of the lid a9 behind the side (2) of the gear box (4). - An elastic claw piece -1 which elastically engages with - is provided vertically.

Therefore, it is possible to attach the cover body (19t) to the gear box (41) without using screws or by reducing the number of screws.
The lid housing 9 is positioned with respect to the cover by the concave S-, which has a convex portion 03 [111 fitted and covered with a substantially cylindrical concave portion]. l! The rear case Q of the motor (3) is placed in a suitable place such as the upper part of the opening periphery of the concave portion of the lid body a9.
3. A convex S brocade elongated hole with an arbitrary shape such as a curved shape for ventilation bored at a distance and an eave-like overhang edge that fits into the elongated hole and abuts along the lower edge of the opening of the elongated hole. are formed into one continuous piece. Further, a plate-shaped protective portion that hangs down along the outer side (2) of the gear box (4) is formed on at least one side edge of the lid housing 9 where the drive capacitor is installed. There is 0
The gear box (4) is positioned with respect to the mass body 19, and is positioned on the motor via the cover body (0) to the gear box (41).The gear box (4) is connected to the rear case of the motor (3). After being positioned at 0, it is fixed with a screw (2).A through hole 11 is formed in the lid cod, through which the binion shaft 4 is inserted, and the through hole 10 is formed on the bottom surface of the lid. The opening of the recess (51) is formed in the ceiling of the circular recess (51), and the pinion shaft (2
) is pulled up to release the engagement between the clutch pawl (top) and the internal teeth, the ball pin is located in the recess (51), the l-le engages *1iiK, and the pinion shaft @ The head (1) does not perform circling. A protruding bottle (52) is installed in the condenser that drives the motor T31 so as to protrude upwards. A mounting piece (53) is formed to fit into the mounting piece (56).
The upper end of the lid body is engaged with the dovetail-shaped locking piece (54) protruding from the upper edge of the lid body, and the gear box 141 is connected to the gear box 141 without using a screw or the like. Maintenance part 11I of lid H
It intervenes to keep the capacitor @ constant, and instead of the above-mentioned oscillating device (c) with a pinion shaft (c), a worm wheel, etc., a oscillating motor formed separately from the motor (3) is used. (55), and the oscillating motor (55) is mounted on the bottom (7) of the gear box 141, and its rotating shaft (56) is connected to the bottom! ll51
It protrudes downward through a through hole (57) corresponding to the through hole for the binion shaft (2) drilled in the shaft (121), and a crank gear (58) is attached to the protruding end to operate the swinging device 124. is forming. This crank gear (58) has an insulating plate on the neck piece (59) which pivotally supports one end of the four connecting rods connected to the neck piece (21) as in the previous embodiment. It is almost the same as , and is given the same reference numeral.

As described above, in the present invention, an oscillating gear box with a composite side cover is attached to the case after the sheet metal press of the fan motor, which is supported vertically and vertically, is attached to the upper part of the JI wind support column. The lid body is provided with a substantially cylindrical recess that fits into the protrusion, which positions the box with respect to the motor using the protrusion formed in the rear case, and furthermore, a T-shaped recess is provided at the opening end of the recess at an appropriate position. A projecting edge is formed to fit along the opening edge of a long hole formed in the case, and when the gear box is separate and the motor specifications are changed, the The longitudinal and vertical positioning of the motor is precise, and the fitting KL between the overhanging edge and the elongated hole performs horizontal positioning and rotation prevention, making installation work on the motor easy and reliable. In addition, in order to achieve dimensional accuracy, the plate 1': There are even greater practical effects, such as the smooth meshing of gears.

[Brief explanation of the drawing]

Fig. 1 is a w4s @ sectional view of the electric fan of the present invention, Fig. 2 is a plan view of the same motor part, Fig. 3 is a sectional view of the same main part, Fig. 314 is an exploded perspective view of the same part, and Fig. 5 is the main part. 6 is a sectional view corresponding to No. 1 #A showing another embodiment of the invention, FIG. 6 is a plan view of the Okazumi 211 phase, and FIG. 7 is a sectional view corresponding to FIG. 6. (4)...gear box, (to))...lid, (goods)...
- Shaking device, facing... overhanging edge. Deuneto Sanyo Electric Co., Ltd. Kinsha Figure 6 1% 6

Claims (1)

[Scope of Claims] 1. A oscillating gear box made of sheet metal press molding, which is equipped with a lid body made of synthetic resin and a penetrating oscillating device attached to the rear case of a fan motor that is supported vertically and vertically on the upper part of a fan support. is mounted on the weight body K, and a rear case is provided with a substantially cylindrical recess that fits into a projection formed on the rear surface of the motor, and a rear case that is bored at an appropriate position at the opening end of the recess, separated from the projection. An electric fan characterized by having a T-shaped overhanging edge that fits along the opening edge of the elongated hole. 2. The transducer is operated directly or indirectly by a worm wheel and a worm wheel that mesh with the worm attached to the rotating shaft of the motor, and by a crank gear, etc. that cranks the connecting rod of the neck piece EP. Configure*%I)'
Ftfl search range 1! The electric fan described in Section 1 of the Code. 6. The vibration device is constituted by a swing motor that is separate from the motor, and a crank gear that is operated by a connecting rod connected to the neck piece, which is operated by the swing motor. Range 1! The electric fan described in item j11.