JPS5814929Y2 - floor suction port - Google Patents

Description

[Detailed description of the invention] This invention relates to the floor suction port of a vacuum cleaner,
The purpose of this is to sandwich a linear spring between the suction port body and the brush body installed inside the suction port body, and to make the brush body elastic with the linear spring. To provide a new floor suction port which has a simple structure of the spring itself and can be produced at low cost compared to the structure, and also has a simple support structure for the spring and can be easily assembled.

Hereinafter, an embodiment of the floor suction port embodying this invention will be described with reference to the drawings. In the drawing, numeral 11 is the main part of the suction port body integrally formed of synthetic resin, and there are two pairs on the lower surface of the drawing. An air passage forming part 13 made of synthetic resin is airtightly connected and fixed by a fixing screw 12 by a ferrule connection, and an air passage 14 is formed by both 11 and 13.

A bent tube 15 is rotatably held in a bent tube fitting portion 16 formed by the main portion 11 and the air passage forming portion 13, and communicates with the air passage 14.

Reference numeral 17 denotes a solid body made of synthetic resin that is connected and fixed to the lower front surface of the main part 11 by a pair of fixing screws 18, and the central part thereof is airtightly connected to the lower end of the rising air passage 14 by an ingot connection. A suction port 17a that opens downward and communicates with the air passage 14 is formed on the lower surface, and an air introduction passage 17b that opens downward and extends left and right from the suction port 17a is formed on the lower surface. .

Reference numeral 19 denotes a pair of retaining protrusions formed protrudingly on both sides of the upper surface of the sled body 17, and as shown in FIGS. By engaging with each other, the sled body 17 is positioned and held at a predetermined position on the lower surface of the main portion 11.

Reference numeral 21 denotes a sled body 1 before and after the air introduction passage 17b.
Three supporting rollers are rotatably attached to the center and both sides of the lower surface of the sled body 1 in use.
With a slight gap between the lower surface of the main part 11.7 and the floor surface. It movably supports a suction port body made up of an air passage forming part 15 and a sled body 17.

22 is an air introduction passage 17 on the lower surface of the sled body 17.
a pair of fins hanging down from the ceiling of the passageway so as to be disposed over almost the entire length in the longitudinal direction of the passageway, the lower ends of which are connected to the air introduction passageway as shown in FIGS. 2 and 3; The sled body 17 is located on a plane connecting the lower surfaces of the sled body 17 placed before and after the sled body 17b, and is placed near the floor surface when in use, so that the carpet surface can be effectively cleaned by contact between the fins 22 and the carpet. It has become.

Reference numeral 23 denotes a bumper attached to the outer periphery of the suction port body at the joint between the main portion 11 and the sled body 17.

Reference numeral 24 denotes a pair of support protrusions protruding from both sides near the front end of the upper surface of the sled body 17, and as shown in FIGS. 5 and 6, support grooves 24a extending in the left-right direction are formed at the upper ends thereof. ing.

Reference numeral 25 denotes a pair of positioning protrusions 2 protrudingly formed on the upper surface of the sled body 17 so as to be located on both sides of one of the supporting protrusions 24.
Reference numeral 6 denotes holding protrusions formed protruding from both sides of the inner surface of the main portion 11 near the front end so as to correspond to each of the support protrusions 24, and a holding piece 26a is protruded from the lower end thereof.

Reference numeral 27 denotes a brush body consisting of a brush frame 28 made of synthetic resin and a number of brushes 29 protruding from the lower surface of its rear end,
As shown in FIGS. 5 and 6, a support shaft 28b formed at the front end of a pair of support legs 28a on the brush frame 28 is rotatable between opposing ends of the support projection 24 and the holding projection 26. The sled body 17 is supported at the rear end edge of the suction port main body, and its position is restricted so that it cannot move laterally by the engagement of one support leg 28 a with the positioning protrusion 25 .
The brush 29 can be made to appear and disappear from the bottom surface of the brush.

Reference numeral 30 indicates both support legs 2 of the brush frame 28 in the assembled state.
A pair of left and right base support protrusions are formed protruding from the inner surface of the main portion 11 so as to be spaced apart from each other in the front-rear direction above 8 a, and a row of the pair of support protrusions is provided at the lower end thereof. A substantially inverted V-shaped groove 30a extending in the direction is formed.

31 is the main part 1 as shown in FIG. 6 during assembly.
A pair of left and right rod springs having a relatively small diameter are inserted into the grooves 30a of each pair of support protrusions 30 with the device 1 turned upside down, and are installed and supported between the support protrusions 30, As shown in FIG. 5, it is formed to be slightly shorter than the front-to-back width of the main part 11, so that it does not move in the front-back direction and fall off from above the support protrusion 30.

Reference numeral 32 denotes a contact protrusion formed protrudingly on the upper surface of both support legs 28H of the brush frame 28, and a contact protrusion 32 is provided at the upper end of the contact protrusion between the support protrusions 30 and contacts the rod spring 31 from the side opposite to the support protrusion 30. A substantially V-shaped concave groove 32a is formed in contact with the rod spring 31, and as shown in FIG.
and the brush body 27, so that the brush 29 is always projected from the lower surface of the sled body 17 by its spring action.

Reference numeral 33 denotes a support cylinder 3 formed protrudingly from the inner surface of the main portion 11.
4 and a support protrusion 35 formed protrudingly on the upper surface of the sled body 17, the operating body is supported rotatably at a certain angle,
A knob portion 33a for external operation is formed protrudingly on the upper surface thereof, and a spiral cam piece 33b that engages with an engaging piece 36 formed protrudingly on the brush frame 28 is formed on the outer periphery.
is formed, and the operating body 3 is controlled by the knob 33a.
3 rotates the brush body 27 to the bar spring 31.
The brush 29 is recessed from the lower surface of the solenoid body 17 by rotating counterclockwise in FIG.

When assembling the floor suction port configured as described above,
First, with the main part 11 turned upside down, the end of the bent pipe 15 is fitted into the main part 11, and the air passage forming part 13 is attached to the main part 11 with the fixing screw 12 so as to sandwich the end of the bent pipe. When connected and fixed to the rear lower surface, the slotted pipe 15 is rotatably held within the bent pipe fitting part 16.

Thereafter, the bar springs 31 are inserted into the grooves 30a of each pair of support protrusions 30 protruding from the inner surface of the main part 11 in the above-mentioned upside-down state, and the bar springs 31 are inserted into the grooves 30a of each pair of support protrusions 30. 30, and a bumper 23, a brush body 27, an operating body 33, etc. are arranged at predetermined positions of the main part 11.

In this state, when the sled body 17 to which the support roller 21 and fins 22 have been attached in advance is connected and fixed to the lower surface of the main part 11 with the fixing screw 18, each part such as the brush body 27 is connected to the main part 11 and the sled body 17. At the same time as being sandwiched between
The recesses 32a of the contact protrusions 32 protruding from both support legs 28a of the brush body 27 abut on the bar springs 31, and the bar springs 31 are securely disposed between the main portion 11 and the brush body 27. be held between.

Therefore, the brush body 27 is always reliably biased and held in a state in which the brush 29 protrudes from the lower surface of the sled body 17 due to the spring action of the bar spring 31, and the brush 29 is used to effectively clean the tatami surface, etc. By rotating the operating body 33 and recessing the brush 29 from the underside of the sled body 17, the fins 22 vertically installed on the underside of the sled body 17 can be used to clean the carpet surface, etc. It can also be effectively cleaned.

Note that this invention is not limited to the configuration of the embodiment described above; for example, a plate spring may be used as a linear spring instead of the bar spring, and the wide part thereof may be arranged horizontally. Contrary to the above embodiment, a support protrusion for supporting the linear spring is provided on the brush body side, and a contact protrusion that contacts the linear spring is provided on the suction port body side, etc., within the scope of the invention. It is also possible to arbitrarily change the configuration of each part.

As described in detail above, this invention includes a brush body that is retractable from the bottom surface of the suction port body, and a plurality of supporting protrusions spaced apart from each other on either the suction port body or the brush body. At the same time, the tip of each support protrusion is formed with a groove extending in the direction in which the support protrusions are arranged, and a linear spring is inserted into each groove to spring the brush body. The linear spring is installed between the support protrusions, and a contact protrusion is provided on the other side of the suction port body and the brush body to abut the linear spring from the side opposite to the support protrusions between the support protrusions. By sandwiching the linear spring between the suction port body and the brush body by the circumferential protrusion, the structure of the spring itself is simpler and cheaper to manufacture than the conventional structure using a coil spring, and the spring The supporting structure is also simplified, which provides an excellent effect that assembly can be easily performed.

Further, as in the above embodiment, if a support protrusion for supporting the linear spring is provided on the suction port body side, and a contact protrusion that contacts the linear spring is provided on the brush body side, the suction port main body can be With the main part turned over, a linear spring can be installed and supported between the support protrusions on the inner surface of the main part, and then the brush body and the sled body can be assembled to the main part, making the assembly work easier.

[Brief explanation of the drawing]

Fig. 1 is a bottom view of a floor suction port showing an embodiment of this invention, Fig. 2 is a sectional view taken along line 2-2 in Fig. 1, and Fig. 3 is a sectional view taken along line 3-3 in Fig. 2. Figure 4 is 4 in Figure 3.
5 is a sectional view taken along line 5-5 in FIG. be.

Claims (1)

[Claims for Utility Model Registration] ■ A brush body that is retractable from the bottom surface is provided in the suction port body, and a plurality of supporting protrusions are provided at intervals on either the suction port body or the brush body. Along with protruding,
A concave groove extending in the direction in which the support protrusions are arranged is formed at the tip of each support protrusion, and a linear spring for springing the brush body is inserted into each concave groove, and the linear spring is connected to the support protrusion. A contact protrusion is provided on the other side of the suction port main body and the brush body to abut the linear spring between the support protrusions, and the protrusion allows the linear spring to A suction port for a floor, which is sandwiched between a suction port main body and a brush body. 2. The floor suction port according to claim 1, which is a registered utility model, characterized in that a concave groove that engages with a linear spring is formed at the tip of the contact protrusion. 3. The floor suction port according to claim 1 or 2, wherein the support protrusion is provided protruding from the suction port body side, and the contact protrusion is provided protruding from the brush body side.