JPH01314528A - Floor nozzle for vacuum cleaner - Google Patents

Abstract

PURPOSE:To improve productivity at the time of assembling a motor by composing the bearing means of the auxiliary bearing of the motor for driving an agitator, of a pair of bearing ribs for retaining the outer periphery and the external end surface of the auxiliary bearing, and a positioning rib for forming an inclined surface at an upper end, and by molding the ribs integrally with a nozzle main-body. CONSTITUTION:The tension of a belt 29 is applied on the shaft 27 of a motor 10, and so at its end section, an auxiliary bearing is fitted, and its outer peripheral shape is square, and the external end of its pivotally supporting slot 34 is closed. The auxiliary bearing 33 is supported by a pair of bearing ribs 35, 36 molded integrally by a main body member 4, and a positioning rib 37 positioned at the roughly intermediate section between the ribs. A pair of the bearing ribs 35, 36 are butted to the parallel outer-peripheral plane of the auxiliary bearing 33, and are turn-stopped, and are retained, and come in contact with an external end surface, and are set in the shape of a cross-sectional area-L to block the movement to the external side. Besides, the positioning rib 37 has an inclined surface 38 to be lowered on the external side, at its upper end.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a so-called electric vacuum cleaner floor nozzle in which an agitator is driven by a motor.

BACKGROUND ART Conventionally, in floor nozzles for vacuum cleaners of this type, the rotational force of a motor was transmitted to an agitator using a belt. Therefore, tension is applied to the motor shaft, and if left as is, shaft wobbling will occur. Therefore,
Up until now, an auxiliary bearing was attached to the tip of the shaft in addition to the bearing inside the motor.

A specific example will be explained with reference to FIG. That is, motor a
A boot IJd for hanging the belt C is fixed to the shaft of the foot, and an auxiliary bearing e is passed through the tip of the foot.

This auxiliary bearing e is held between a pair of substantially U-shaped ribs f integrally formed with the nozzle body.

Problem to be Solved by the Invention However, in the above configuration, since the auxiliary bearing e moves freely in the longitudinal direction of the shaft, it is difficult to insert it into the rib f, and as a result, it is difficult to hold the motor d and the auxiliary bearing e with both hands. I had to assemble it while doing so.

In addition, the outer circumferential shape of the auxiliary bearing e is usually set to a polygonal shape such as a quadrangle to prevent co-rotation by contacting with the rib f, but in this case, the parallel plane of the outer circumference is aligned with the rib f. Unless otherwise specified, insertion between two identical files could not be performed.

From the above, the conventional configuration is difficult to assemble, requires a large number of man-hours, and is difficult to assemble automatically.

The present invention solves these conventional problems,
The present invention provides a floor nozzle that is easy to assemble.

Means for Solving the Problems A first means of the present invention for achieving the above object includes an agitator and a motor installed inside the nozzle body, and a power transmission belt stretched between the agitator and the motor. and an auxiliary bearing attached to the end of the shaft of the motor with one end of the shaft support hole closed, and support means for supporting the auxiliary bearing, and the support means includes an outer periphery of the auxiliary bearing and a It consists of a pair of support ribs that sandwich the end face from both sides, and a positioning socket that is located approximately in the middle of the support ribs and has an inclined surface formed on the upper end, and these ribs are integrally molded from the nozzle body. be. The second means includes an agitator and a motor disposed inside the nozzle body, a power transmission belt stretched between the agitator and the motor, and a power transmission belt attached to the end of the shaft of the motor and provided in the shaft support hole. It comprises an auxiliary bearing whose outer periphery is polygonal with one end closed, and support means for supporting the auxiliary bearing while preventing it from rotating, and the supporting means holds the outer periphery and outer end surface of the auxiliary bearing from both sides,
It consists of a pair of supporting ribs, at least one of which is freely displaceable, and a positioning rib located approximately in the middle of the supporting ribs and having an inclined surface formed at its upper end, and these ribs are integrally molded from the nozzle body. It is something.

Operation According to the first means, when the auxiliary bearing passes through the motor shaft, one end of the shaft support hole is closed, so that the shaft and the auxiliary bearing are maintained in a predetermined positional relationship. Then, as it is inserted into the support means, the outer end surface of the auxiliary bearing is automatically positioned on the support rib by the inclined surface of the positioning rib, and its outer periphery is held between the support ribs. .

According to the second means, if the auxiliary bearing is not positioned in the circumferential direction, at least one of the supporting ribs is elastically deformed, and its restoring force corrects the position in the same direction to a predetermined state. .

Example Examples thereof will be described below with reference to the accompanying drawings.

In Figs. 1 to 9, the nozzle body 1 is the nozzle par 2.
It is obtained by joining the upper and lower body members 3.4 via a suction chamber 6 having a lower opening as a suction port 6 in its front interior.

The center of the suction port 6 extends to the rear of the nozzle body 1 and is connected to a suction passage 7 whose upper and lower walls are arcuate. Further, inside the nozzle body 1 located behind the suction port 6, there are chambers 8 and 9 partitioned left and right by the suction passage 7. A motor 10 and a control section 11 thereof are installed in the other room 9, respectively. Reference numerals 12 and 13 denote vent holes for flowing cooling air into each of the rooms 8 and 9, which are covered with filter materials 14 and 15 to prevent dust from entering.

Reference numeral 16 denotes a substantially semi-cylindrical suction joint which is connected to the suction passage 7 so as to be able to rise and fall freely, and a connecting pipe 19 is rotatably connected via a ring 18 to a cylindrical connecting port 17 that protrudes from a part of the peripheral wall of the suction joint. An extension pipe connected to the suction side of the vacuum cleaner via a hose is detachably connected to the connecting vibe 19. Reference numeral 20 indicates a power cord for the motor 10.

Reference numeral 21 designates an agitator provided in parallel to the suction chamber 6, and reference numeral 22 designates bearings for the agitator 21 provided on both side walls of the suction chamber 6. The shaft 23 of the agitator 21 also protrudes laterally beyond the bearing 22, to which an auxiliary agitator 24 is attached.

This auxiliary agitator 24 is arranged to face an opening 26 formed in the side wall of the nozzle body 1.

A belt 29 is connected between a pulley 26 provided on one side of the agitator 21 and a pulley 28 provided on the shaft 27 of the motor 1o.
is stretched. That is, the agitator 21.24
is forcibly driven by the motor 1o.

30 is a fixed brush installed parallel to the rear of the suction port 6;
Reference numeral 1.32 denotes wheels provided before and after the nozzle body 10 in order to position the suction port 6 at a constant distance from the surface to be cleaned.

By the way, since the tension of the belt 29 is applied to the shaft 27 of the motor 1o, an auxiliary bearing 33 is attached to the end thereof.
is attached. The auxiliary bearing 33 has a rectangular outer circumferential shape, and the outer end of the shaft support hole 34 is closed.

The auxiliary bearing 33 includes a pair of support ribs 35.36 integrally formed from the main body member 4, and a pair of support ribs 35.36 integrally formed with the main body member 4.
It is supported by a positioning rib 37 located approximately in the middle of 8. More specifically, the pair of support ribs 35 and 36 are in contact with the parallel outer circumferential plane of the auxiliary bearing 33 to stop it from rotating and clamp it, and in addition to being in contact with the outer end surface to prevent it from moving outward. It is set in a cursive shape. Further, the positioning rib 37 has an inclined surface 38 at its upper end such that the outer side is lowered.

In the above configuration, when the auxiliary bearing 33 is inserted into the shaft 27 of the motor 10, since the outer end of the shaft support hole 34 is closed, the shaft 27 and the auxiliary bearing 33 are set in a predetermined positional relationship. (Figure 4).

Next, when it is lowered as shown in FIG. 6, the lower inner end of the auxiliary bearing 33 hits the inclined surface 38iC, and the bearing 33 moves downward while moving slightly outward, and finally, as shown in FIG. It is held in a predetermined position between 35 and 36.

Further, in this embodiment, the upper part of one of the support ribs 35 is not in an L-shape but in an engineering shape so that it can be easily displaced. Therefore, when the auxiliary bearing 33 is inserted with a 90 degree displacement as shown in FIG. 7, the support rib 35 is once displaced outward (FIG. 8), and then reversed 90 degrees by its restoring force.

That is, the parallel plane of the auxiliary bearing 33 is the support rib 35.3.
The position is automatically corrected along the line 6 and inserted in the normal state as shown in FIG.

In the above embodiment, only one of the support ribs is displaceable, but it is of course possible to make both of the support ribs displaceable.

Effects of the Invention As described above, according to the present invention, it is possible to improve productivity through automatic assembly without requiring much effort when assembling the motor. Furthermore, even if the auxiliary bearing is out of position, it is automatically corrected by the natural displacement of the support rib, making assembly smoother, further increasing mass productivity, and preventing rib breakage. .

[Brief explanation of the drawing]

Fig. 1 is a perspective view of essential parts showing an embodiment of the present invention, Fig. 2 is an overall plan view with the upper body member removed, Fig. 3 is a sectional view, Figs. The figures are assembly illustrations, Figures 7 and 8.
9 are assembly explanatory diagrams of another embodiment, and FIG. 10 is a top view showing a conventional example. 1... Nozzle body, 1o... Motor,
21... Mountain/Agitator, 27... Axis, 29...
...Belt, 33...Auxiliary bearing, 34.
...Shaft, 35.36...Support rib, 37
...Positioning rib, 38...Slope surface. Name of agent: Patent attorney Toshi Nakao and 1 other person Gar - support rib 610 length prayer rib 37 - -7 t 1 shi・Motor and wheel gauge-belt 37-...
...What is the 4th figure of Jiuken Mikoto? Figure 5 Figure 6 Battle 3B , :f7 35 Figure 7

Claims (2)

[Claims] (1) An agitator and a motor installed inside the nozzle body, a power transmission belt stretched between the agitator and the motor, and a belt attached to the end of the shaft of the motor, with one end of the shaft support hole closed. The supporting means includes a pair of support ribs that sandwich the outer periphery and outer end surface of the auxiliary bearing from both sides, and a support means that supports the auxiliary bearing. A floor nozzle for a vacuum cleaner, which is composed of a positioning rib with an inclined surface formed at the upper end, and these ribs are integrally molded from the nozzle body. (2) An agitator and a motor installed inside the nozzle body, a power transmission belt stretched between the agitator and the motor, and a belt attached to the end of the shaft of the motor to close one end of the shaft support hole. The auxiliary bearing has a polygonal outer periphery, and a support means for supporting the auxiliary bearing while preventing it from rotating. For vacuum cleaners, it consists of a pair of freely displaceable supporting ribs and a positioning rib located approximately in the middle of the supporting ribs and having an inclined surface formed on the upper end, and these ribs are integrally molded from the nozzle body. floor nozzle.