JPH03244429A - Floor polisher - Google Patents

Abstract

PURPOSE:To eliminate the difficulty of a work with leading of a cord by provid ing a DC power device and a secondary battery on a lower body having a rotating table rotated through a decelerator by a DC electric motor and an upper body rotatably disposed on the lower body. CONSTITUTION:7 is an upper body rotatably disposed on a lower body 1, and provided with a secondary battery 8 and a DC power source device 9. 10 is a main switch, 11 is a connector connected to an external power supply cord, and 12 is a charge/alternating changeover switch disposed near the connector, which is pushed by a charge/alternating changeover lever 13 by inserting a power supply cord to the connector 11, switching to alternating system using the DC power supply device 9 as a power supply. 18 is a charge connecting part provided on the lower end of the upper body, which is formed of a charge/ discharge changeover switch 19, a charge/discharge changeover lever 20, a charge connecting terminal 21, and a battery connecting terminal 22. The charge/discharge changeover lever 20 pushes the tab of the charge/discharge changeover switch 19 when the body is set to a pad and receiving table 23, whereby discharge circuit is interrupted, and the secondary battery 8 is certainly charged.

Description

[Detailed description of the invention] Industrial applications The present invention relates to an electric floor polishing machine for both filling and exchanging purposes.

Conventional technology Conventional electric floor polishers were only available for AC.

Problems to be Solved by the Invention With conventional electric floor polishers like this, the power cord is always connected when in use, so care must be taken to prevent the cord from wrapping around the body and to prevent wax from getting on the cord when waxing. This makes it difficult to use.

The present invention solves the above-mentioned problems and aims to provide a compact and easy-to-use floor polishing machine for both filling and exchanging.

Means for Solving the Problems In order to achieve the above object, the present invention has a DC motor installed on a main body which is rotatably disposed under the main body and has a rotary table which is rotated by a DC motor via a reduction gear. It has a built-in power supply and secondary battery. Further, the DC power supply device is arranged above the secondary battery.

Effects of the present invention Due to the above-described structure, when the power cord is removed and used as a rechargeable type, there is no hassle of pulling the cord around, and there is no need to be careful not to get wax on the cord when applying wax. Usability is improved regardless of the location, such as cleaning stairs where it is difficult to route the cord.

Furthermore, when the battery runs out, it can be used by immediately switching to the AC type, which eliminates concerns about the battery running out of charge and allows for worry-free use.

Furthermore, by placing the secondary battery under the DC power supply, the wiring between the secondary battery and the DC motor can be shortened.

It also exhibits effects such as reducing voltage drop and effectively extracting energy from the secondary battery.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 13.

As shown in the figure, the lower main body 1 is provided with a rotary table 4 that is rotated by a DC motor 2 via a reduction gear 3. The rotary table 4 is removably attached to the speed reducer 3, and a hook-and-loop fastener 6 on which various cleaning pads 5 are removably attached is adhered to the back side of the rotary table. Reference numeral 7 denotes a main body which is rotatably disposed on the lower part 1 of the main body, and includes a secondary battery 8 and a DC power supply device 9 built thereon. 1o is a main switch, 11 is a connector that connects to an external power cord (not shown), and 12 is a charge/alternate switch located near the connector 11. By inserting the power cord into the connector 11, The charging and alternating switch lever 13 pushes the charging and alternating switch 12 to switch to an alternating current system using the DC power supply device 9 as a power source. Reference numeral 14 denotes a handle that is detachably attached to the main body 7 and has a handle portion 15 on the upper part. The main switch 10 is set to 0N- in the hand/l/14.
It has a lever 16 that is turned off, and this lever 16 is operated by a switch knob 17 provided on the handle portion 16.

The switch knob 17 has a double resin hinge structure, and as shown in FIG.
and a hinge portion 17kl for absorbing dimensional variations in the length of the lever 16.

18 is a charging connection section provided at the lower end of the main body, and a charging/discharging switch 19. Charge/discharge switching lever 20 and charging connection terminal 21. It is composed of a battery connection terminal 22. When the main body of the charge/discharge selector lever 20 is placed on a pad/storage stand 23 (described later), the charge/discharge selector switch 19 is pressed as shown in FIG. 5, and the discharge circuit is cut off. There is. This ensures that the secondary battery 8 is charged even if the main switch 10 is forgotten to be turned off.

FIGS. 3 and 4 show the pad storage/charging stand 23, and the front part is a pad storage section 231L, on which a storage lid 24 is detachably attached. The rear portion is a charging stand portion 23b that incorporates a transformer 26 and a charging terminal 26 and has a power cord 27.

When charging, the pad is attached to the rotating table regardless of whether it is attached or not.
The charging connection terminal 21 on the top of the main body is the charging terminal 2 on the charging stand 23
6, a terminal sliding distance (a in the figure) is provided.

Furthermore, when the floor polisher is placed on the charging stand 23, the lower body 1 is locked to the upper body 7 in a horizontal position, as shown in Figure 2, and when in use, the lock is released as shown in Figure 7. ,
The upper body 7 is configured to naturally tilt. As shown in Fig. 1 and Figs. 8 to 9, this causes vertical play between the rotation bearing part 1b provided on the lower part 1 of the main body and the rotation shaft 7a provided on the upper part 7 of the main body. At the same time, when the upper body 7 is vertically raised and lifted up, the lower body 1 is engaged with the rotation bearing 1b of the lower body 1 and the rotation shaft 7IL of the upper body 7 so that the lower body 1 is locked horizontally. Stops 1C and 7b are provided. During normal use, the upper body 7 is lowered by the amount of play in the rotating portion, and the locking lip 1C on the lower body 1 and the locking rib 7b on the upper body 7 come off, allowing it to rotate freely.

In addition, the tilt angle of the main body top 7 is configured as follows in order to bring it close to horizontal to the floor surface.

As shown in FIGS. 6 and 7, by making the central gear of the two-stage reducer 3 eccentric to the front, a recess 3a is formed at the rear.
is provided, and when the main body upper part 7 is tilted, the main body 7 is
The charging connection part 18 at the lower end of the battery escapes to increase the tilt angle.

Next, in order to enhance the cooling effect of the DC motor 2, as shown in FIGS. An air outlet 29 is provided on the inner wall surface, and by moving the floor polisher back and forth, the air that enters through the air inlet 28 cools the DC motor 2 and is expelled from the air outlet 29.

In addition, the outer circumference of the lower main body 1 is made to protrude into a flange shape 1a in accordance with the outer diameter of the pad, so that it can be cleaned even in concave areas near walls such as furniture, as shown in Fig. 13. .

As shown in Fig. 11, the rotary table 4 has an integral structure 4a of resin hinges on the outer periphery to provide cushioning properties and protect the floor surface from scratches when the floor polisher is accidentally dropped. Improving.

The pad shown in FIG. 12 is a waxing pad 5.
It has a layered structure. 5a is a wax-coated surface having a mesh structure such as nylon; 6b is a water-absorbing and oil-absorbing material such as cotton that absorbs wax; and 50 is a nylon pile, which is detachably attached to the rotary table 4. The outer circumferences of the three materials mentioned above are sewn together with bias tape 6d. With this configuration, when applying wax, the nylon mesh 5a of the first layer reduces operating resistance, and the line portion 5b of the second layer absorbs a large amount of wax applied to the floor surface and releases it appropriately. It has the effect of applying a thin layer of wax.

Effects of the Invention As is clear from the above embodiments, since the present invention can be used as a rechargeable device, it is difficult to carry out work by pulling the cord around (the cord gets wrapped around the body or the main body, wax is attached to the cord, etc.). (e.g., there are places where it is difficult to work, such as stairs, etc., where dust may adhere).

Furthermore, by placing the battery under the DC power supply, the wiring from the battery to the DC motor can be shortened, voltage drop can be reduced, and the energy of the battery can be effectively drawn out. Furthermore, since the DC power supply is located at the top, even if the product is accidentally used in a place with a lot of water, the water will not splash up to the top, improving safety against electric shock. The present invention provides an improved floor polishing machine for both filling and exchanging purposes.

[Brief explanation of drawings]

FIG. 1 is a front sectional view of an electric floor polisher showing an embodiment of the present invention;
Figure 2 is a side sectional view, Figures 3 and 4 are external views and cross-sectional views of the pad storage/charging stand, Figure 6 is a diagram of the main body set on the charging stand, Figure 6 is a plan view of the reducer. Figures 7 and 7 are views with the top of the main body tilted, Figures 8 and 9 are detailed views of the click structure (rotation shaft portion) on the top and bottom of the main body, and Figure 8a is a front view. Figure 8 is a sectional view, Figure 9 is a front view of the unlocked state, Figure 10 is a detailed view of the handle, Figure 1 is an overall view of the switch knob at 077, and Figure 9 is a front view of the unlocked state. The state diagram when it is ON, Figure 11 is a detailed diagram of the rotary table.
FIG. 12 is a cross-sectional view of the waxing pad, and FIG. 13 is a diagram showing the state in which a recessed portion of a wall surface of furniture or the like is being cleaned. 1...Bottom body, 2...DC motor, 3
...Reducer, 4...Rotary table, 7...
...On the main body, 8...Secondary battery, 9...
・DC power supply, 14...handle.

Claims (2)

[Claims] (1) It consists of a lower part of the main body that has a rotary table that is rotated by a DC motor via a speed reducer, an upper part of the main body that is rotatably arranged under the main part, and a handle part that is detachably attached to the main part. , a floor polishing machine comprising a DC power supply and a secondary battery disposed on the main body. (2) The floor polishing machine according to claim 1, wherein the DC power supply device is disposed above the secondary battery.