JPS58203736A - Self-running type electric cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This invention relates to a self-propelled vacuum cleaner.

Most conventional "*i" vacuum cleaners do not have a path change device, so changing the path requires a lot of effort on the part of the operator, especially in large vacuum cleaners that have a large operating resistance. This trend was significant.

Therefore, as a t-air vacuum cleaner with a course changing device that can solve such problems, it has a pair of left and right self-propelled wheels that are independently driven by a pair of electric motors, and the activation/deactivation of the pair of electric motors is used. A self-propelled vacuum cleaner has been proposed that changes direction by individually switching the direction. However, there is a drawback in the configuration of the switch for switching between operation and non-operation i of the pair of electric motors, making it difficult to perform a course change operation, and an improvement has been desired.

Therefore, an object of the present invention is to provide a self-propelled vacuum cleaner that can easily perform a course change operation.

The self-propelled vacuum cleaner of the present invention independently drives a pair of left and right self-propelled wheels in a substantially symmetrical traveling direction using a pair of electric motors that can be individually activated and deactivated by switching a switch. In such a vacuum cleaner, both of the electric motors are normally operated, and the handle grip part is rotatably attached to the handle extending from the vacuum cleaner body in a direction perpendicular to the axles of the pair of self-propelled wheels. It drives the left or right self-propelled wheels in response to rotation operations to the left or right.By configuring the switch so that only the electric motor is inactive, it is easy to change course to the left or right. It was designed so that it could be done.

A specific example of the dice will be explained below based on FIGS. 1 to 6. In FIGS. 1 to 3, 1 is an electric blower that rotates a rotary brush 2 via a belt 3 and sucks dust using exhaust pressure, 4 is an air intake port, and 5 is a dust collection bag. 6 is the vacuum cleaner body in which these machine parts are placed and sealed;
7 is a lid for replacing the dust collection bag 5, 8 dust collection chambers, 9 m,
9b is the electric motor 11a via the reduction gears 101 and 10b.
, llb, and a self-propelled rear wheel 12 is a front wheel rotatably attached to the cleaner body 6.

A cord reel case 13 is rotatably attached to the cleaner body 6 and has a cord reel 13' inside. It is a cylindrical handle with one end fixed to the 14Fi cord reel case 13, and has a handle grip part 15 with a perfect circular inner circumference rotatably attached to the other end.

4 and 5, reference numeral 16 denotes a switch fixedly arranged inside the handle 14, with a contact spring base 23 protruding inward from the center of the lower plate of the case 22, and a switch 16 on both sides of the upper plate of the case 22. Contacts 214 and 21b are provided to protrude inward from the contact spring base 23, and the center of the contact spring 20 is fixed to the contact spring base 23, and both ends of the contact spring 20 are brought into elastic contact with the contacts 21M and 21b, respectively. A long hole 22a whose long axis is a line connecting the contacts 212 and 21b is formed above the contact spring base 23 on the upper plate of the case 22. Also, V
A closing operation pin 17 is provided protruding from the inner surface of the handle rim 15, and its tip passes through a long hole 14a formed in the handle 14 with its long axis extending in the circumferential direction. A long hole 22 arranged perpendicular to the long axis of the hole 14a
14b and 14C protruding from both ends of the elongated hole 14a on the inner surface of the handle 14. In a neutral state where the other end of the coil spring 18 and 19 is locked to the opening/closing operation pin 17 and no external force is applied to the handle grip portion 15, the tip of the opening/closing operation pin 17 is connected to the contact spring 2.
0 contact point 21! , 21b maintains the welded state of the contact spring 20, and the handle grip portion 15
When rotated to the left, the opening/closing operation bin 17 biases the contact spring 2"O so that the left end of the contact spring 20 moves away from the contact 21g, and conversely, when the left end of the contact spring 20 is rotated to the right, the contact spring 2"O The right end of is biased away from contact 421b.

FIG. 6 is a circuit diagram showing the connection relationship between the electric motors 11a, Ilb and the switch 16, in which the contact spring 2o is in contact and the contact spring 2 is in contact.
'ta, the electric motor 118 that drives the left self-propelled rear wheel 9a stops operating, and the contact spring 20 moves to the contact 21b.
Electric motor 1 that drives the self-propelled rear wheel 9 on the right side as you move away from the
The operation of 1b is stopped. Note that 24' is an AC power source, and 25 is a power switch.

In the above configuration, as shown in FIG.
In a neutral state where no rotational force is applied to the pair of electric motors 1
A pair of contacts 211, 2 corresponding to 1fi, llb
1b is in a closed form, a pair of self-propelled rear wheels 9m, 9b
are both rotating. Here, when the handle grip part 15 is rotated to the left as shown in FIG. 6, the handle grip part 1
The opening/closing operation pin 17 fixed to the terminal 5 deforms the contact spring 20 and the contact 21 opens, and only the electric motor IC linked to the left self-propelled rear wheel 9 stops. Therefore, the operating resistance on the left side increases with respect to forward movement, and the cleaner body 6 changes its course to the left. Conversely, if the handle grip portion 15 is rotated to the right, the course will be changed to the right.

In this way, in this embodiment, the left and right self-propelled rear wheels 9''+9b are connected to the left and right electric motors 11J.
Since the motors 11a and 11b are configured to be driven independently, and the operation of either the left or right electric motor 11a or 11b is stopped in response to left or right rotation of the steering wheel sound part 15, the course is [1] The operation becomes easier, and the labor of the operator can be greatly reduced. Note that two microswitches may be used instead of the switch 16.

As described above, the self-propelled vacuum cleaner of the present invention includes a vacuum cleaner body, left and right self-propelled wheels provided on the vacuum cleaner body, and left and right self-propelled wheels, respectively. Left and right electric motors are independently driven; a cylindrical handle extends from the cleaning body in a direction perpendicular to the axles of the left and right self-propelled wheels; a handle gripping portion, and in response to a leftward rotation of the handle gripping portion with respect to the handle, the left electric motor is rendered inactive, and a rightward rotation of the handle KM of the handle gripping portion; Since the vehicle is equipped with a switch for disabling the right motor, the route change operation can be easily performed, and as a result, the labor of the operator can be greatly reduced.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a self-propelled vacuum cleaner according to an embodiment of the present invention, Fig. 2 is a vertical cross-sectional view, Fig. 3 is a cross-sectional view of the vacuum cleaner body, and Fig. 4 is a cross-sectional view of the vacuum cleaner body. An enlarged plan view of the handle of the neutral core - 1 The 4th drawing is its cross-sectional view, Figure 5 (9) is an enlarged plan view of the handle of the rotating core, Figure 5 (B) is its cross-sectional view, Figure 6 The figure is a circuit diagram of the main part of the electric 9IC. 6...Vacuum cleaner body, 9m, 9b...Self-propelled rear wheel, 1
11゜11b...Electric motor, 14...Handle, 14
8... Long hole, 15... Handle grip, 16...
Switch, 17...Opening/closing operation pin, 18.19...
Tension coil spring, 20... Contact spring, 21a, 2
1b...Contact 2nd figure 2♂ 5th figure 6th figure

Claims (1)

[Claims] (1) A vacuum cleaner body, left and right self-propelled wheels provided on the vacuum cleaner body, and left and right electric motors that independently drive the left and right self-propelled wheels, respectively;
A cylindrical handle extending from the vacuum cleaner body in a direction perpendicular to the axles of the left and right self-propelled wheels, a handle grip portion rotatably fitted onto the tip of the handle, and the handle grip portion. In response to the leftward rotation of the handle with respect to the handle, the left electric motor is inactivated, and in response to the rightward rotation of the handle grip with respect to the handle, the right electric motor is inactivated. A self-propelled vacuum cleaner equipped with a switch for setting the state. ■ @Ki Swipuchi has a pair of contact points fixedly arranged inside the tip of the handle at a constant distance from each other in a direction orthogonal to the handle axis direction and symmetrical with respect to one handle diameter, a linear contact spring whose center is fixed to the tip of the handle and whose ends are in elastic contact with the pair of contacts, and a circumferential direction formed at a location opposite to the contact spring at the other end of the handle; With a long hole,
one end of the contact barb is separated from one of the pair of contacts when the handle grip part is rotated to the left with respect to the handle; The contact spring is energized so that the electric motor on the left side of the front 6 is inoperative, and when the handle grip υ portion is rotated in the right direction relative to the handle, the other end of the contact spring is connected from the other of the pair of contacts. The self-propelled vacuum cleaner according to claim 1, further comprising an opening/closing operation pin that biases the contact spring so as to open the contact spring so as to disable the right motor.