JPH0141324B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an upright vacuum cleaner.

2. Description of the Related Art Conventionally, there has been an upright type vacuum cleaner in which a vacuum cleaner body is provided with a handle extending rearward and upper, and the handle is pushed to cause the vacuum cleaner body to travel and perform cleaning. Since the handle is attached so as to be freely rotatable in the front and back directions, it is easy to move the cleaner body forward and back. Since it is difficult to determine the direction when moving forward, many upright type vacuum cleaners that move by pushing out the handle do not have a turning wheel. However, this type of vacuum cleaner has the disadvantage that it is difficult to operate because the rear part of the heavy vacuum cleaner body must be moved laterally when changing direction.

The present invention has been made in view of these points, and an object of the present invention is to provide an upright vacuum cleaner with good turning operability.

The present invention is an upright type vacuum cleaner, which has running wheels attached to the floor surface on the lower surface of the vacuum cleaner body, a handle extending upward at the rear, and a power cord arranged along the handle. In the vacuum cleaner, the handle consists of a short lower handle and a long upper handle with a grip formed at the upper end, and the lower handle is rotatable in the vertical direction relative to the vacuum cleaner body and is attached to the rear upper part. A fitting part is fixedly provided at the lower end of the upper handle and has an axis bent with respect to the axis of the upper handle, and the fitting part is attached to the upper end of the lower handle with a retaining member. The notch and the protrusion restrict the range of relative rotation within a predetermined angle, and the notch and the protrusion prevent the fitting from coming off. Therefore, by simply rotating the upper handle around its axis, the heavy vacuum cleaner main body can be easily turned from side to side according to the rotation angle, and moreover, the upper handle and lower handle do not fit together easily. Since the range of relative rotation at the joint is restricted to within a predetermined angle by the notch and protrusion, there is no risk of the power cord being twisted excessively and breaking, and the turning radius of the vacuum cleaner body is not too small. This is done so that the turning performance is not impaired.

An embodiment of the present invention will be described based on the drawings. 1 is the main body of the vacuum cleaner. This vacuum cleaner main body 1 is formed with a suction air passage 3 with an opening on the bottom surface for rotatably housing a rotary brush 2, and has a filter unit 4 in the center, and a dust collector communicating with the suction air passage 3 through a through hole 5. A dust collection case 6 is removably inserted therein, and an electric blower chamber 8 for housing an electric blower 7 is formed at the rear. This electric blower chamber 8 is communicated with the exhaust side of the filter unit 4 through a through hole 9 and with the outside air through an exhaust hole 10. The electric blower 7 and the rotating brush 2 are connected by a belt 11.

Next, running wheels 12 are attached to both sides of the vacuum cleaner body 1, and a handle 14 having a grip 13 at the upper end is attached to the upper rear surface of the cleaner body 1 so as to be rotatable in the front and rear directions by means of a pin 15. This handle 14 has a lower handle 1 having a cylinder 17 at its upper end.
8 and an upper handle 19, and a connecting pipe 16 is fixed to the lower end of the upper handle 19. This connecting pipe 16 is connected to the upper handle 1 by means of a screw 23.
A fixed tube 20 fixed to the cylinder 17 and a fitting part 21 which is fitted into the cylinder 17 while being prevented from coming off by a ring 22 as a falling-off preventing member are formed. The axis of this fitting part 21 is bent at an obtuse angle with respect to the axes of the upper handle 19 and the fixed tube 20. Further, an L-shaped hook 24 is formed on the grip 13 and the connecting pipe 16. These hooks 24 are attached to the electric blower 7.
A power cord 26 which is connected to a power source via a switch 25 provided on the grip 13 is wound around the grip 13. A notch 27 is formed in the fitting portion 21, and a protrusion 28 protruding from the notch 27 is formed in the cylinder 17.

In such a configuration, cleaning is performed by driving the electric blower 7 and moving the cleaner body 1 along the floor surface. That is, rotating brush 2
receives the rotational force of the electric blower 7 to blow out dust adhering to the carpet, and the dust is sucked into the dust collecting case 6. At this time, by rotating the handle 14 in the front-rear direction, the operator can easily move the cleaner body 1 in the front-rear direction by freely changing the height of the hand. Since there are no turning wheels, straight-line performance is also good. Further, a fitting part 21 fixedly provided on the upper handle 19 is rotatably fitted on the cylinder 17 of the lower handle 18 on the same axis, and the fitting part 21 is at an obtuse angle with respect to the axis of the upper handle 19. When the upper handle 19 is rotated around its axis, the fitting part 21 and the lower handle 18 are bent around the intersection of the axis of the upper handle 19 and the axis of the upper handle 19 as shown in FIG. From the position shown in b, the user swings his or her head left and right as shown in FIG. In this case grip 1
3 has a substantially L-shape that is bent with respect to the axis of the upper handle 19, so that it is easy to apply a force to turn the upper handle 19. Further, since the upper handle 19 is longer than the lower handle 18 and the fitting portion of the two is closer to the cleaner body 1, the force for turning the cleaner body 1 can be small.

Further, the range of relative rotation between the lower handle 18 and the upper handle 19 is between the notch 27 and the protrusion 28.
regulated by the power cord 26
The switch 25 will not be excessively twisted and cut, and the switch 25 will not be located directly behind and hidden behind the grip 13. Moreover, the turning radius of the cleaner body 1 does not become too small and the turning performance is not impaired.

Note that the fitting part 21 may be provided integrally with the lower part of the upper handle 19.

As described above, this invention provides a fixedly provided fitting part having an axis bent with respect to the axis of the lower part of the upper handle, and this fitting part is rotatably fitted coaxially to the lower handle. By simply rotating the upper handle around its axis, you can easily turn the heavy vacuum cleaner body left and right according to the rotation angle, and the upper handle and lower handle fit together easily. Since the range of relative rotation at the joint is restricted to within a predetermined angle by the notch and protrusion, there is no risk of the power cord being twisted excessively and breaking, and the turning radius of the vacuum cleaner body is not too small. This has the advantage that turning performance is not impaired.

[Brief explanation of drawings]

The drawings show one embodiment of the invention.
The figure is a perspective view with the whole reduced in size, Figure 2 is a side view with a part cut away, Figure 3 is a longitudinal side view of the main part, and Figure 4 is a horizontal sectional view of the fitting part of the upper handle and lower handle. , FIG. 5 is a perspective view of the main part, and FIG. 6 is a plan view showing the turning operation in a reduced scale. 1... Vacuum cleaner body, 12... Traveling wheels, 14...
...handle, 18 ... lower handle, 19 ... upper handle, 21 ... fitting part.

Claims (1)

[Claims] 1. An upright type vacuum cleaner that has running wheels attached to the bottom of the vacuum cleaner body that connect to the floor, a handle that extends upward at the rear, and a power cord that runs along the handle. In the vacuum cleaner, the handle includes a short lower handle and a long upper handle having a grip at the upper end, and the lower handle is rotatable in the vertical direction relative to the vacuum cleaner body and extends rearward and upper. A fitting portion having an axis bent with respect to the axis of the upper handle is fixedly provided at the lower end of the upper handle, and the fitting portion is secured to the upper end of the lower handle by a retaining member. An upright type vacuum cleaner characterized in that the range of relative rotational movement is restricted within a predetermined angle by a notch and a protrusion and are fitted together for free rotation.